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add lwp support

This commit is contained in:
shaojinchun 2018-12-10 16:31:33 +08:00
parent 56c0df1e58
commit a8953e9211
29 changed files with 3336 additions and 10 deletions
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4
bsp/allwinner_tina/libcpu/start_gcc.S
View File

@ -48,7 +48,7 @@ _vector_reset:
_vector_undef:
.word vector_undef
_vector_swi:
.word vector_swi
.word SVC_Handler
_vector_pabt:
.word vector_pabt
_vector_dabt:
@ -315,6 +315,8 @@ rt_hw_context_switch_interrupt_do:
.endm
.align 5
.weak SVC_Handler
SVC_Handler:
vector_swi:
push_svc_reg
bl rt_hw_trap_swi

19
bsp/qemu-vexpress-a9/.config
View File

@ -66,6 +66,7 @@ CONFIG_RT_USING_INTERRUPT_INFO=y
CONFIG_RT_USING_CONSOLE=y
CONFIG_RT_CONSOLEBUF_SIZE=128
CONFIG_RT_CONSOLE_DEVICE_NAME="uart0"
CONFIG_RT_VER_NUM=0x40000
CONFIG_ARCH_ARM=y
CONFIG_ARCH_ARM_CORTEX_A=y
CONFIG_ARCH_ARM_CORTEX_A9=y
@ -109,7 +110,7 @@ CONFIG_FINSH_ARG_MAX=10
CONFIG_RT_USING_DFS=y
CONFIG_DFS_USING_WORKDIR=y
CONFIG_DFS_FILESYSTEMS_MAX=2
CONFIG_DFS_FILESYSTEM_TYPES_MAX=2
CONFIG_DFS_FILESYSTEM_TYPES_MAX=8
CONFIG_DFS_FD_MAX=16
# CONFIG_RT_USING_DFS_MNTTABLE is not set
CONFIG_RT_USING_DFS_ELMFAT=y
@ -165,10 +166,12 @@ CONFIG_RT_MMCSD_THREAD_PREORITY=22
CONFIG_RT_MMCSD_MAX_PARTITION=16
# CONFIG_RT_SDIO_DEBUG is not set
CONFIG_RT_USING_SPI=y
# CONFIG_RT_USING_QSPI is not set
CONFIG_RT_USING_SPI_MSD=y
CONFIG_RT_USING_SFUD=y
CONFIG_RT_SFUD_USING_SFDP=y
CONFIG_RT_SFUD_USING_FLASH_INFO_TABLE=y
# CONFIG_RT_SFUD_USING_QSPI is not set
# CONFIG_RT_DEBUG_SFUD is not set
# CONFIG_RT_USING_W25QXX is not set
# CONFIG_RT_USING_GD is not set
@ -298,6 +301,7 @@ CONFIG_LOG_TRACE_USING_LEVEL_INFO=y
# CONFIG_LOG_TRACE_USING_MEMLOG is not set
# CONFIG_RT_USING_RYM is not set
# CONFIG_RT_USING_ULOG is not set
CONFIG_RT_USING_LWP=y
#
# RT-Thread online packages
@ -383,6 +387,7 @@ CONFIG_LOG_TRACE_USING_LEVEL_INFO=y
# CONFIG_PKG_USING_SQLITE is not set
# CONFIG_PKG_USING_RTI is not set
# CONFIG_PKG_USING_LITTLEVGL2RTT is not set
# CONFIG_PKG_USING_CMSIS is not set
#
# peripheral libraries and drivers
@ -392,6 +397,9 @@ CONFIG_LOG_TRACE_USING_LEVEL_INFO=y
# CONFIG_PKG_USING_REALTEK_AMEBA is not set
# CONFIG_PKG_USING_SHT2X is not set
# CONFIG_PKG_USING_AHT10 is not set
# CONFIG_PKG_USING_AP3216C is not set
# CONFIG_PKG_USING_STM32_SDIO is not set
# CONFIG_PKG_USING_ICM20608 is not set
#
# miscellaneous packages
@ -409,7 +417,14 @@ CONFIG_LOG_TRACE_USING_LEVEL_INFO=y
#
# sample package
#
# CONFIG_PKG_USING_SAMPLES is not set
#
# samples: kernel and components samples
#
# CONFIG_PKG_USING_KERNEL_SAMPLES is not set
# CONFIG_PKG_USING_FILESYSTEM_SAMPLES is not set
# CONFIG_PKG_USING_NETWORK_SAMPLES is not set
# CONFIG_PKG_USING_PERIPHERAL_SAMPLES is not set
#
# example package: hello

25
bsp/qemu-vexpress-a9/cpu/context_gcc.S
View File

@ -63,6 +63,11 @@ rt_hw_context_switch_to:
bl rt_cpus_lock_status_restore
#endif /*RT_USING_SMP*/
#ifdef RT_USING_LWP
ldmfd sp, {r13, r14}^ @ pop usr_sp usr_lr
add sp, #8
#endif
ldmfd sp!, {r4} @ pop new task spsr
msr spsr_cxsf, r4
@ -89,6 +94,11 @@ rt_hw_context_switch:
stmfd sp!, {r4} @ push cpsr
#ifdef RT_USING_LWP
stmfd sp, {r13, r14}^ @ push usr_sp usr_lr
sub sp, #8
#endif
str sp, [r0] @ store sp in preempted tasks TCB
ldr sp, [r1] @ get new task stack pointer
@ -97,6 +107,11 @@ rt_hw_context_switch:
bl rt_cpus_lock_status_restore
#endif /*RT_USING_SMP*/
#ifdef RT_USING_LWP
ldmfd sp, {r13, r14}^ @ pop usr_sp usr_lr
add sp, #8
#endif
ldmfd sp!, {r4} @ pop new task cpsr to spsr
msr spsr_cxsf, r4
ldmfd sp!, {r0-r12, lr, pc}^ @ pop new task r0-r12, lr & pc, copy spsr to cpsr
@ -142,6 +157,11 @@ rt_hw_context_switch_interrupt:
stmfd sp!, {r4-r7} @ push old task's r0-r3
stmfd sp!, {r3} @ push old task's cpsr
#ifdef RT_USING_LWP
stmfd sp, {r13,r14}^ @push usr_sp usr_lr
sub sp, #8
#endif
msr cpsr_c, #I_Bit|F_Bit|Mode_IRQ
pop {r1 - r3}
mov sp, r0
@ -152,6 +172,11 @@ rt_hw_context_switch_interrupt:
mov r0, r3
bl rt_cpus_lock_status_restore
#ifdef RT_USING_LWP
ldmfd sp, {r13,r14}^ @pop usr_sp usr_lr
add sp, #8
#endif
ldmfd sp!, {r4} @ pop new task's cpsr to spsr
msr spsr_cxsf, r4

6
bsp/qemu-vexpress-a9/cpu/stack.c
View File

@ -51,13 +51,17 @@ rt_uint8_t *rt_hw_stack_init(void *tentry, void *parameter,
*(--stk) = 0; /* r2 */
*(--stk) = 0; /* r1 */
*(--stk) = (rt_uint32_t)parameter; /* r0 : argument */
/* cpsr */
if ((rt_uint32_t)tentry & 0x01)
*(--stk) = SVCMODE | 0x20; /* thumb mode */
else
*(--stk) = SVCMODE; /* arm mode */
#ifdef RT_USING_LWP
*(--stk) = 0; /* user lr */
*(--stk) = 0; /* user sp*/
#endif
/* return task's current stack address */
return (rt_uint8_t *)stk;
}

16
bsp/qemu-vexpress-a9/cpu/start_gcc.S
View File

@ -288,6 +288,11 @@ rt_hw_context_switch_interrupt_do:
stmfd sp!, {r1-r4} @ push old task's r0-r3
stmfd sp!, {r0} @ push old task's cpsr
#ifdef RT_USING_LWP
stmfd sp, {r13, r14}^ @push usr_sp, usr_lr
sub sp, #8
#endif
ldr r4, =rt_interrupt_from_thread
ldr r5, [r4]
str sp, [r5] @ store sp in preempted tasks's TCB
@ -296,6 +301,11 @@ rt_hw_context_switch_interrupt_do:
ldr r6, [r6]
ldr sp, [r6] @ get new task's stack pointer
#ifdef RT_USING_LWP
ldmfd sp, {r13, r14}^ @pop usr_sp, usr_lr
add sp, #8
#endif
ldmfd sp!, {r4} @ pop new task's cpsr to spsr
msr spsr_cxsf, r4
@ -317,6 +327,8 @@ rt_hw_context_switch_interrupt_do:
.align 5
.globl vector_swi
.weak SVC_Handler
SVC_Handler:
vector_swi:
push_svc_reg
bl rt_hw_trap_swi
@ -400,8 +412,8 @@ irq_stack_2:
irq_stack_2_limit:
.data
#define DEVICE_MEM 0x10406
#define NORMAL_MEM 0x1140e
#define DEVICE_MEM 0x10c06
#define NORMAL_MEM 0x11c0e
.align 14
mtbl:

3
bsp/qemu-vexpress-a9/cpu/vector_gcc.S
View File

@ -21,6 +21,7 @@
* Date Author Notes
* 2013-07-05 Bernard the first version
*/
.section .vectors, "ax"
.code 32
@ -49,7 +50,7 @@ _vector_reset:
_vector_undef:
.word vector_undef
_vector_swi:
.word vector_swi
.word SVC_Handler
_vector_pabt:
.word vector_pabt
_vector_dabt:

17
bsp/qemu-vexpress-a9/rtconfig.h
View File

@ -63,6 +63,7 @@
#define RT_USING_CONSOLE
#define RT_CONSOLEBUF_SIZE 128
#define RT_CONSOLE_DEVICE_NAME "uart0"
#define RT_VER_NUM 0x40000
#define ARCH_ARM
#define ARCH_ARM_CORTEX_A
#define ARCH_ARM_CORTEX_A9
@ -102,7 +103,7 @@
#define RT_USING_DFS
#define DFS_USING_WORKDIR
#define DFS_FILESYSTEMS_MAX 2
#define DFS_FILESYSTEM_TYPES_MAX 2
#define DFS_FILESYSTEM_TYPES_MAX 8
#define DFS_FD_MAX 16
/* RT_USING_DFS_MNTTABLE is not set */
#define RT_USING_DFS_ELMFAT
@ -156,10 +157,12 @@
#define RT_MMCSD_MAX_PARTITION 16
/* RT_SDIO_DEBUG is not set */
#define RT_USING_SPI
/* RT_USING_QSPI is not set */
#define RT_USING_SPI_MSD
#define RT_USING_SFUD
#define RT_SFUD_USING_SFDP
#define RT_SFUD_USING_FLASH_INFO_TABLE
/* RT_SFUD_USING_QSPI is not set */
/* RT_DEBUG_SFUD is not set */
/* RT_USING_W25QXX is not set */
/* RT_USING_GD is not set */
@ -276,6 +279,7 @@
/* LOG_TRACE_USING_MEMLOG is not set */
/* RT_USING_RYM is not set */
/* RT_USING_ULOG is not set */
#define RT_USING_LWP
/* RT-Thread online packages */
@ -348,6 +352,7 @@
/* PKG_USING_SQLITE is not set */
/* PKG_USING_RTI is not set */
/* PKG_USING_LITTLEVGL2RTT is not set */
/* PKG_USING_CMSIS is not set */
/* peripheral libraries and drivers */
@ -356,6 +361,9 @@
/* PKG_USING_REALTEK_AMEBA is not set */
/* PKG_USING_SHT2X is not set */
/* PKG_USING_AHT10 is not set */
/* PKG_USING_AP3216C is not set */
/* PKG_USING_STM32_SDIO is not set */
/* PKG_USING_ICM20608 is not set */
/* miscellaneous packages */
@ -371,7 +379,12 @@
/* sample package */
/* PKG_USING_SAMPLES is not set */
/* samples: kernel and components samples */
/* PKG_USING_KERNEL_SAMPLES is not set */
/* PKG_USING_FILESYSTEM_SAMPLES is not set */
/* PKG_USING_NETWORK_SAMPLES is not set */
/* PKG_USING_PERIPHERAL_SAMPLES is not set */
/* example package: hello */

2
components/Kconfig
View File

@ -39,4 +39,6 @@ source "$RTT_DIR/components/utilities/Kconfig"
source "$RTT_DIR/components/CMSIS/Kconfig"
source "$RTT_DIR/components/lwp/Kconfig"
endmenu

8
components/lwp/Kconfig Normal file
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@ -0,0 +1,8 @@
config RT_USING_LWP
bool "Using light-weight process"
select RT_USING_DFS
select RT_USING_LIBC
depends on ARCH_ARM_CORTEX_M || ARCH_ARM_ARM9 || ARCH_ARM_CORTEX_A
default n
help
The lwP is a light weight process running in user mode.

20
components/lwp/SConscript Normal file
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@ -0,0 +1,20 @@
Import('rtconfig')
from building import *
cwd = GetCurrentDir()
src = []
CPPPATH = []
support_arch = {"arm": ["cortex-m3", "cortex-m4", "cortex-m7", "R6", "vexpress-a9"]}
platform_file = {'armcc': 'rvds.S', 'gcc': 'gcc.S', 'iar': 'iar.S'}
if rtconfig.PLATFORM in platform_file.keys(): # support platforms
if rtconfig.ARCH in support_arch.keys() and rtconfig.CPU in support_arch[rtconfig.ARCH]:
# arch/arm/cortex-m7/lwp_gcc.S
asm_path = 'arch/' + rtconfig.ARCH + '/' + rtconfig.CPU + '/*_' + platform_file[rtconfig.PLATFORM]
src = Glob('*.c') + Glob(asm_path)
CPPPATH = [cwd]
group = DefineGroup('lwP', src, depend = ['RT_USING_LWP'], CPPPATH = CPPPATH)
Return('group')

94
components/lwp/arch/arm/R6/lwp_gcc.S Normal file
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@ -0,0 +1,94 @@
/*
* File : lwp_gcc.c
* This file is part of RT-Thread RTOS
* COPYRIGHT (C) 2006 - 2018, RT-Thread Development Team
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License along
* with this program; if not, write to the Free Software Foundation, Inc.,
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
*
* Change Logs:
* Date Author Notes
*/
#define Mode_USR 0x10
#define Mode_FIQ 0x11
#define Mode_IRQ 0x12
#define Mode_SVC 0x13
#define Mode_MON 0x16
#define Mode_ABT 0x17
#define Mode_UDF 0x1B
#define Mode_SYS 0x1F
#define A_Bit 0x100
#define I_Bit 0x80 @; when I bit is set, IRQ is disabled
#define F_Bit 0x40 @; when F bit is set, FIQ is disabled
#define T_Bit 0x20
.cpu arm9
.syntax unified
.text
/*
* void lwp_user_entry(args, text, data);
*/
.global lwp_user_entry
.type lwp_user_entry, % function
lwp_user_entry:
mrs r9, cpsr
mov r8, r9
bic r9, #0x1f
orr r9, #Mode_USR
orr r8, #I_Bit
msr cpsr_c, r8
msr spsr, r9
/* set data address. */
mov r9, r2
movs pc, r1
/*
* void SVC_Handler(void);
*/
.global SVC_Handler
.type SVC_Handler, % function
SVC_Handler:
push {lr}
mrs lr, spsr
push {r4, r5, lr}
mrs r4, cpsr
bic r4, #I_Bit
msr cpsr_c, r4
push {r0 - r3, r12}
and r0, r7, #0xff
bl lwp_get_sys_api
cmp r0, #0 /* r0 = api */
mov r4, r0
pop {r0 - r3, r12}
beq svc_exit
ldr lr, = svc_exit
bx r4
svc_exit:
mrs r4, cpsr
orr r4, #I_Bit
msr cpsr_c, r4
pop {r4, r5, lr}
msr spsr_cxsf, lr
pop {lr}
movs pc, lr

137
components/lwp/arch/arm/cortex-m3/lwp_gcc.S Normal file
View File

@ -0,0 +1,137 @@
/*
* File : lwp_gcc.c
* This file is part of RT-Thread RTOS
* COPYRIGHT (C) 2006 - 2018, RT-Thread Development Team
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License along
* with this program; if not, write to the Free Software Foundation, Inc.,
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
*
* Change Logs:
* Date Author Notes
*/
.cpu cortex-m3
.syntax unified
.thumb
.text
/*
* void* lwp_get_sys_api(rt_uint32_t number);
*/
.global lwp_get_sys_api
.global lwp_get_kernel_sp
.global lwp_set_kernel_sp
/*
* void lwp_user_entry(args, text, data);
*/
.global lwp_user_entry
.type lwp_user_entry, % function
lwp_user_entry:
PUSH {R0-R3} @; push text&data addr.
MOV R0, SP @; v1 = SP
BL lwp_set_kernel_sp @; lwp_set_kernel_sp(v1)
@; set CPU to user-thread mode.
MRS R2, CONTROL
ORR R2, R2, #0x03 @; use PSP, user-thread mode.
MSR CONTROL, R2
POP {R0-R3} @; pop app address to R1.
@; set data address.
MOV R9, R2
@; run app, only Thumb-mode.
ORR R1, R1, #0x01
BX R1
/*
* void SVC_Handler(void);
*/
.global SVC_Handler
.type SVC_Handler, % function
SVC_Handler:
PUSH {LR}
@; get user SP.
TST LR, #0x4
ITE EQ
MRSEQ R1, MSP
MRSNE R1, PSP
PUSH {R1} @; push app SP.
@; get SVC number.
mov R0, R7
@; get kernel system API
BL lwp_get_sys_api
PUSH {R0} @; push api
@; get kernel SP to R0.
BL lwp_get_kernel_sp
POP {R2} @; pop api to R2.
POP {R1} @; pop app SP to R1.
stmfd r0!, {r1} @; save app SP to kernel SP
@;push app parm5~6 to kernel SP
STMFD R0!, {R4 - R5}
@; copy R1(app SP) to R0(kernel SP).
push {r8-r11}
LDMFD R1, {R4 - R11} @; pop exception_stack_frame to r4 - r11 register
STMFD R0!, {R4 - R11} @; push exception_stack_frame to server SP.
pop {r8-r11}
LDR R3, =svc_exit
STR R3, [R0, #20] @; update LR
STR R2, [R0, #24] @; update api to PC
MSR PSP, R0 @; update SP, API is executed with kernel SP
@; set to thread-privilege mode.
MRS R3, CONTROL
BIC R3, R3, #0x01
ORR R3, R3, #0x02
MSR CONTROL, R3
POP {LR} @; 0xFFFFFFED
ORR LR, LR, #0x10
BX LR
/*
* void svc_exit(void);
*/
.global svc_exit
.type svc_exit, % function
svc_exit:
@; get user SP.
PUSH {R0} @; push result to SP.
BL lwp_get_kernel_sp
ldr r3, [r0, #-4]
pop {r0}
ldr lr, [r3, #20]
ldr r1, [r3, #24] @; load pc
add r3, #32 @; exception_stack_frame size
MSR PSP, R3 @; restore app stack pointer
@; restore to PSP & thread-unprivilege mode.
MRS R2, CONTROL
ORR R2, R2, #0x03
MSR CONTROL, R2
@; return to lwp.
ORR R1, R1, #0x01 @; only Thumb-mode.
BX R1 @; return to user app.

136
components/lwp/arch/arm/cortex-m3/lwp_iar.S Normal file
View File

@ -0,0 +1,136 @@
;/*
; * File : lwp_iar.S
; * This file is part of RT-Thread RTOS
; * COPYRIGHT (C) 2006 - 2018, RT-Thread Development Team
; *
; * This program is free software; you can redistribute it and/or modify
; * it under the terms of the GNU General Public License as published by
; * the Free Software Foundation; either version 2 of the License, or
; * (at your option) any later version.
; *
; * This program is distributed in the hope that it will be useful,
; * but WITHOUT ANY WARRANTY; without even the implied warranty of
; * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
; * GNU General Public License for more details.
; *
; * You should have received a copy of the GNU General Public License along
; * with this program; if not, write to the Free Software Foundation, Inc.,
; * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
; *
; * Change Logs:
; * Date Author Notes
; */
SECTION .text:CODE(2)
THUMB
REQUIRE8
PRESERVE8
;/*
; * void* lwp_get_sys_api(rt_uint32_t number);
; */
IMPORT lwp_get_sys_api
IMPORT lwp_get_kernel_sp
IMPORT lwp_set_kernel_sp
;/*
; * void lwp_user_entry(args, text, data);
; */
EXPORT lwp_user_entry
lwp_user_entry:
PUSH {R0-R3} ; push text&data addr.
MOV R0, SP ; v1 = SP
BL lwp_set_kernel_sp ; lwp_set_kernel_sp(v1)
; set CPU to user-thread mode.
MRS R2, CONTROL
ORR R2, R2, #0x03 ; use PSP, user-thread mode.
MSR CONTROL, R2
POP {R0-R3} ; pop app address to R1.
; set data address.
MOV R9, R2
; run app, only Thumb-mode.
ORR R1, R1, #0x01
BX R1
;/*
; * void SVC_Handler(void);
; */
EXPORT SVC_Handler
SVC_Handler:
PUSH {LR}
; get user SP.
TST LR, #0x4
ITE EQ
MRSEQ R1, MSP
MRSNE R1, PSP
PUSH {R1} ; push app SP.
; get SVC number.
mov R0, R7
; get kernel system API
BL lwp_get_sys_api
PUSH {R0} ; push api
; get kernel SP to R0.
BL lwp_get_kernel_sp
POP {R2} ; pop api to R2.
POP {R1} ; pop app SP to R1.
stmfd r0!, {r1} ; save app SP to kernel SP
;push app parm5~6 to kernel SP
STMFD R0!, {R4 - R5}
; copy R1(app SP) to R0(kernel SP).
push {r8-r11}
LDMFD R1, {R4 - R11} ; pop exception_stack_frame to r4 - r11 register
STMFD R0!, {R4 - R11} ; push exception_stack_frame to server SP.
pop {r8-r11}
LDR R3, =svc_exit
STR R3, [R0, #20] ; update LR
STR R2, [R0, #24] ; update api to PC
MSR PSP, R0 ; update SP, API is executed with kernel SP
; set to thread-privilege mode.
MRS R3, CONTROL
BIC R3, R3, #0x01
ORR R3, R3, #0x02
MSR CONTROL, R3
POP {LR} ; 0xFFFFFFED
ORR LR, LR, #0x10
BX LR
;/*
; * void svc_exit(void);
; */
EXPORT svc_exit
svc_exit:
; get user SP.
PUSH {R0} ; push result to SP.
BL lwp_get_kernel_sp
ldr r3, [r0, #-4]
pop {r0}
ldr lr, [r3, #20]
ldr r1, [r3, #24] ; load pc
add r3, r3, #32 ; exception_stack_frame size
MSR PSP, R3 ; restore app stack pointer
; restore to PSP & thread-unprivilege mode.
MRS R2, CONTROL
ORR R2, R2, #0x03
MSR CONTROL, R2
; return to lwp.
ORR R1, R1, #0x01 ; only Thumb-mode.
BX R1 ; return to user app.
END

148
components/lwp/arch/arm/cortex-m3/lwp_rvds.S Normal file
View File

@ -0,0 +1,148 @@
;/*
; * File : lwp_rvds.S
; * This file is part of RT-Thread RTOS
; * COPYRIGHT (C) 2006 - 2018, RT-Thread Development Team
; *
; * This program is free software; you can redistribute it and/or modify
; * it under the terms of the GNU General Public License as published by
; * the Free Software Foundation; either version 2 of the License, or
; * (at your option) any later version.
; *
; * This program is distributed in the hope that it will be useful,
; * but WITHOUT ANY WARRANTY; without even the implied warranty of
; * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
; * GNU General Public License for more details.
; *
; * You should have received a copy of the GNU General Public License along
; * with this program; if not, write to the Free Software Foundation, Inc.,
; * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
; *
; * Change Logs:
; * Date Author Notes
; */
AREA |.text|, CODE, READONLY, ALIGN=2
THUMB
REQUIRE8
PRESERVE8
;/*
; * void* lwp_get_sys_api(rt_uint32_t number);
; */
IMPORT lwp_get_sys_api
IMPORT lwp_get_kernel_sp
IMPORT lwp_set_kernel_sp
;/*
; * void lwp_user_entry(args, text, data);
; */
lwp_user_entry PROC
EXPORT lwp_user_entry
PUSH {R0-R3} ; push text&data addr.
MOV R0, SP ; v1 = SP
BL lwp_set_kernel_sp ; lwp_set_kernel_sp(v1)
; set CPU to user-thread mode.
MRS R2, CONTROL
ORR R2, R2, #0x03 ; use PSP, user-thread mode.
MSR CONTROL, R2
POP {R0-R3} ; pop app address to R1.
; set data address.
MOV R9, R2
; run app, only Thumb-mode.
ORR R1, R1, #0x01
BX R1
; never reach here!
ENDP
;/*
; * void SVC_Handler(void);
; */
SVC_Handler PROC
EXPORT SVC_Handler
PUSH {LR}
; get user SP.
TST LR, #0x4
ITE EQ
MRSEQ R1, MSP
MRSNE R1, PSP
PUSH {R1} ; push app SP.
; get SVC number.
mov R0, R7
; get kernel system API
BL lwp_get_sys_api
PUSH {R0} ; push api
; get kernel SP to R0.
BL lwp_get_kernel_sp
POP {R2} ; pop api to R2.
POP {R1} ; pop app SP to R1.
stmfd r0!, {r1} ; save app SP to kernel SP
;push app parm5~6 to kernel SP
STMFD R0!, {R4 - R5}
; copy R1(app SP) to R0(kernel SP).
push {r8-r11}
LDMFD R1, {R4 - R11} ; pop exception_stack_frame to r4 - r11 register
STMFD R0!, {R4 - R11} ; push exception_stack_frame to server SP.
pop {r8-r11}
LDR R3, =svc_exit
STR R3, [R0, #20] ; update LR
STR R2, [R0, #24] ; update api to PC
MSR PSP, R0 ; update SP, API is executed with kernel SP
; set to thread-privilege mode.
MRS R3, CONTROL
BIC R3, R3, #0x01
ORR R3, R3, #0x02
MSR CONTROL, R3
POP {LR} ; 0xFFFFFFED
ORR LR, LR, #0x10
BX LR
ENDP
;/*
; * void svc_exit(void);
; */
svc_exit PROC
EXPORT svc_exit
; get user SP.
PUSH {R0} ; push result to SP.
BL lwp_get_kernel_sp
ldr r3, [r0, #-4]
pop {r0}
ldr lr, [r3, #20]
ldr r1, [r3, #24] ; load pc
add r3, #32 ; exception_stack_frame size
MSR PSP, R3 ; restore app stack pointer
; restore to PSP & thread-unprivilege mode.
MRS R2, CONTROL
ORR R2, R2, #0x03
MSR CONTROL, R2
; return to lwp.
ORR R1, R1, #0x01 ; only Thumb-mode.
BX R1 ; return to user app.
ENDP
ALIGN
END

137
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/*
* File : lwp_gcc.c
* This file is part of RT-Thread RTOS
* COPYRIGHT (C) 2006 - 2018, RT-Thread Development Team
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License along
* with this program; if not, write to the Free Software Foundation, Inc.,
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
*
* Change Logs:
* Date Author Notes
*/
.cpu cortex-m4
.syntax unified
.thumb
.text
/*
* void* lwp_get_sys_api(rt_uint32_t number);
*/
.global lwp_get_sys_api
.global lwp_get_kernel_sp
.global lwp_set_kernel_sp
/*
* void lwp_user_entry(args, text, data);
*/
.global lwp_user_entry
.type lwp_user_entry, % function
lwp_user_entry:
PUSH {R0-R3} @; push text&data addr.
MOV R0, SP @; v1 = SP
BL lwp_set_kernel_sp @; lwp_set_kernel_sp(v1)
@; set CPU to user-thread mode.
MRS R2, CONTROL
ORR R2, R2, #0x03 @; use PSP, user-thread mode.
MSR CONTROL, R2
POP {R0-R3} @; pop app address to R1.
@; set data address.
MOV R9, R2
@; run app, only Thumb-mode.
ORR R1, R1, #0x01
BX R1
/*
* void SVC_Handler(void);
*/
.global SVC_Handler
.type SVC_Handler, % function
SVC_Handler:
PUSH {LR}
@; get user SP.
TST LR, #0x4
ITE EQ
MRSEQ R1, MSP
MRSNE R1, PSP
PUSH {R1} @; push app SP.
@; get SVC number.
mov R0, R7
@; get kernel system API
BL lwp_get_sys_api
PUSH {R0} @; push api
@; get kernel SP to R0.
BL lwp_get_kernel_sp
POP {R2} @; pop api to R2.
POP {R1} @; pop app SP to R1.
stmfd r0!, {r1} @; save app SP to kernel SP
@;push app parm5~6 to kernel SP
STMFD R0!, {R4 - R5}
@; copy R1(app SP) to R0(kernel SP).
push {r8-r11}
LDMFD R1, {R4 - R11} @; pop exception_stack_frame to r4 - r11 register
STMFD R0!, {R4 - R11} @; push exception_stack_frame to server SP.
pop {r8-r11}
LDR R3, =svc_exit
STR R3, [R0, #20] @; update LR
STR R2, [R0, #24] @; update api to PC
MSR PSP, R0 @; update SP, API is executed with kernel SP
@; set to thread-privilege mode.
MRS R3, CONTROL
BIC R3, R3, #0x01
ORR R3, R3, #0x02
MSR CONTROL, R3
POP {LR} @; 0xFFFFFFED
ORR LR, LR, #0x10
BX LR
/*
* void svc_exit(void);
*/
.global svc_exit
.type svc_exit, % function
svc_exit:
@; get user SP.
PUSH {R0} @; push result to SP.
BL lwp_get_kernel_sp
ldr r3, [r0, #-4]
pop {r0}
ldr lr, [r3, #20]
ldr r1, [r3, #24] @; load pc
add r3, #32 @; exception_stack_frame size
MSR PSP, R3 @; restore app stack pointer
@; restore to PSP & thread-unprivilege mode.
MRS R2, CONTROL
ORR R2, R2, #0x03
MSR CONTROL, R2
@; return to lwp.
ORR R1, R1, #0x01 @; only Thumb-mode.
BX R1 @; return to user app.

136
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;/*
; * File : lwp_iar.S
; * This file is part of RT-Thread RTOS
; * COPYRIGHT (C) 2006 - 2018, RT-Thread Development Team
; *
; * This program is free software; you can redistribute it and/or modify
; * it under the terms of the GNU General Public License as published by
; * the Free Software Foundation; either version 2 of the License, or
; * (at your option) any later version.
; *
; * This program is distributed in the hope that it will be useful,
; * but WITHOUT ANY WARRANTY; without even the implied warranty of
; * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
; * GNU General Public License for more details.
; *
; * You should have received a copy of the GNU General Public License along
; * with this program; if not, write to the Free Software Foundation, Inc.,
; * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
; *
; * Change Logs:
; * Date Author Notes
; */
SECTION .text:CODE(2)
THUMB
REQUIRE8
PRESERVE8
;/*
; * void* lwp_get_sys_api(rt_uint32_t number);
; */
IMPORT lwp_get_sys_api
IMPORT lwp_get_kernel_sp
IMPORT lwp_set_kernel_sp
;/*
; * void lwp_user_entry(args, text, data);
; */
EXPORT lwp_user_entry
lwp_user_entry:
PUSH {R0-R3} ; push text&data addr.
MOV R0, SP ; v1 = SP
BL lwp_set_kernel_sp ; lwp_set_kernel_sp(v1)
; set CPU to user-thread mode.
MRS R2, CONTROL
ORR R2, R2, #0x03 ; use PSP, user-thread mode.
MSR CONTROL, R2
POP {R0-R3} ; pop app address to R1.
; set data address.
MOV R9, R2
; run app, only Thumb-mode.
ORR R1, R1, #0x01
BX R1
;/*
; * void SVC_Handler(void);
; */
EXPORT SVC_Handler
SVC_Handler:
PUSH {LR}
; get user SP.
TST LR, #0x4
ITE EQ
MRSEQ R1, MSP
MRSNE R1, PSP
PUSH {R1} ; push app SP.
; get SVC number.
mov R0, R7
; get kernel system API
BL lwp_get_sys_api
PUSH {R0} ; push api
; get kernel SP to R0.
BL lwp_get_kernel_sp
POP {R2} ; pop api to R2.
POP {R1} ; pop app SP to R1.
stmfd r0!, {r1} ; save app SP to kernel SP
;push app parm5~6 to kernel SP
STMFD R0!, {R4 - R5}
; copy R1(app SP) to R0(kernel SP).
push {r8-r11}
LDMFD R1, {R4 - R11} ; pop exception_stack_frame to r4 - r11 register
STMFD R0!, {R4 - R11} ; push exception_stack_frame to server SP.
pop {r8-r11}
LDR R3, =svc_exit
STR R3, [R0, #20] ; update LR
STR R2, [R0, #24] ; update api to PC
MSR PSP, R0 ; update SP, API is executed with kernel SP
; set to thread-privilege mode.
MRS R3, CONTROL
BIC R3, R3, #0x01
ORR R3, R3, #0x02
MSR CONTROL, R3
POP {LR} ; 0xFFFFFFED
ORR LR, LR, #0x10
BX LR
;/*
; * void svc_exit(void);
; */
EXPORT svc_exit
svc_exit:
; get user SP.
PUSH {R0} ; push result to SP.
BL lwp_get_kernel_sp
ldr r3, [r0, #-4]
pop {r0}
ldr lr, [r3, #20]
ldr r1, [r3, #24] ; load pc
add r3, r3, #32 ; exception_stack_frame size
MSR PSP, R3 ; restore app stack pointer
; restore to PSP & thread-unprivilege mode.
MRS R2, CONTROL
ORR R2, R2, #0x03
MSR CONTROL, R2
; return to lwp.
ORR R1, R1, #0x01 ; only Thumb-mode.
BX R1 ; return to user app.
END

148
components/lwp/arch/arm/cortex-m4/lwp_rvds.S Normal file
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;/*
; * File : lwp_rvds.S
; * This file is part of RT-Thread RTOS
; * COPYRIGHT (C) 2006 - 2018, RT-Thread Development Team
; *
; * This program is free software; you can redistribute it and/or modify
; * it under the terms of the GNU General Public License as published by
; * the Free Software Foundation; either version 2 of the License, or
; * (at your option) any later version.
; *
; * This program is distributed in the hope that it will be useful,
; * but WITHOUT ANY WARRANTY; without even the implied warranty of
; * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
; * GNU General Public License for more details.
; *
; * You should have received a copy of the GNU General Public License along
; * with this program; if not, write to the Free Software Foundation, Inc.,
; * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
; *
; * Change Logs:
; * Date Author Notes
; */
AREA |.text|, CODE, READONLY, ALIGN=2
THUMB
REQUIRE8
PRESERVE8
;/*
; * void* lwp_get_sys_api(rt_uint32_t number);
; */
IMPORT lwp_get_sys_api
IMPORT lwp_get_kernel_sp
IMPORT lwp_set_kernel_sp
;/*
; * void lwp_user_entry(args, text, data);
; */
lwp_user_entry PROC
EXPORT lwp_user_entry
PUSH {R0-R3} ; push text&data addr.
MOV R0, SP ; v1 = SP
BL lwp_set_kernel_sp ; lwp_set_kernel_sp(v1)
; set CPU to user-thread mode.
MRS R2, CONTROL
ORR R2, R2, #0x03 ; use PSP, user-thread mode.
MSR CONTROL, R2
POP {R0-R3} ; pop app address to R1.
; set data address.
MOV R9, R2
; run app, only Thumb-mode.
ORR R1, R1, #0x01
BX R1
; never reach here!
ENDP
;/*
; * void SVC_Handler(void);
; */
SVC_Handler PROC
EXPORT SVC_Handler
PUSH {LR}
; get user SP.
TST LR, #0x4
ITE EQ
MRSEQ R1, MSP
MRSNE R1, PSP
PUSH {R1} ; push app SP.
; get SVC number.
mov R0, R7
; get kernel system API
BL lwp_get_sys_api
PUSH {R0} ; push api
; get kernel SP to R0.
BL lwp_get_kernel_sp
POP {R2} ; pop api to R2.
POP {R1} ; pop app SP to R1.
stmfd r0!, {r1} ; save app SP to kernel SP
;push app parm5~6 to kernel SP
STMFD R0!, {R4 - R5}
; copy R1(app SP) to R0(kernel SP).
push {r8-r11}
LDMFD R1, {R4 - R11} ; pop exception_stack_frame to r4 - r11 register
STMFD R0!, {R4 - R11} ; push exception_stack_frame to server SP.
pop {r8-r11}
LDR R3, =svc_exit
STR R3, [R0, #20] ; update LR
STR R2, [R0, #24] ; update api to PC
MSR PSP, R0 ; update SP, API is executed with kernel SP
; set to thread-privilege mode.
MRS R3, CONTROL
BIC R3, R3, #0x01
ORR R3, R3, #0x02
MSR CONTROL, R3
POP {LR} ; 0xFFFFFFED
ORR LR, LR, #0x10
BX LR
ENDP
;/*
; * void svc_exit(void);
; */
svc_exit PROC
EXPORT svc_exit
; get user SP.
PUSH {R0} ; push result to SP.
BL lwp_get_kernel_sp
ldr r3, [r0, #-4]
pop {r0}
ldr lr, [r3, #20]
ldr r1, [r3, #24] ; load pc
add r3, #32 ; exception_stack_frame size
MSR PSP, R3 ; restore app stack pointer
; restore to PSP & thread-unprivilege mode.
MRS R2, CONTROL
ORR R2, R2, #0x03
MSR CONTROL, R2
; return to lwp.
ORR R1, R1, #0x01 ; only Thumb-mode.
BX R1 ; return to user app.
ENDP
ALIGN
END

137
components/lwp/arch/arm/cortex-m7/lwp_gcc.S Normal file
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/*
* File : lwp_gcc.c
* This file is part of RT-Thread RTOS
* COPYRIGHT (C) 2006 - 2018, RT-Thread Development Team
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License along
* with this program; if not, write to the Free Software Foundation, Inc.,
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
*
* Change Logs:
* Date Author Notes
*/
.cpu cortex-m7
.syntax unified
.thumb
.text
/*
* void* lwp_get_sys_api(rt_uint32_t number);
*/
.global lwp_get_sys_api
.global lwp_get_kernel_sp
.global lwp_set_kernel_sp
/*
* void lwp_user_entry(args, text, data);
*/
.global lwp_user_entry
.type lwp_user_entry, % function
lwp_user_entry:
PUSH {R0-R3} @; push text&data addr.
MOV R0, SP @; v1 = SP
BL lwp_set_kernel_sp @; lwp_set_kernel_sp(v1)
@; set CPU to user-thread mode.
MRS R2, CONTROL
ORR R2, R2, #0x03 @; use PSP, user-thread mode.
MSR CONTROL, R2
POP {R0-R3} @; pop app address to R1.
@; set data address.
MOV R9, R2
@; run app, only Thumb-mode.
ORR R1, R1, #0x01
BX R1
/*
* void SVC_Handler(void);
*/
.global SVC_Handler
.type SVC_Handler, % function
SVC_Handler:
PUSH {LR}
@; get user SP.
TST LR, #0x4
ITE EQ
MRSEQ R1, MSP
MRSNE R1, PSP
PUSH {R1} @; push app SP.
@; get SVC number.
mov R0, R7
@; get kernel system API
BL lwp_get_sys_api
PUSH {R0} @; push api
@; get kernel SP to R0.
BL lwp_get_kernel_sp
POP {R2} @; pop api to R2.
POP {R1} @; pop app SP to R1.
stmfd r0!, {r1} @; save app SP to kernel SP
@;push app parm5~6 to kernel SP
STMFD R0!, {R4 - R5}
@; copy R1(app SP) to R0(kernel SP).
push {r8-r11}
LDMFD R1, {R4 - R11} @; pop exception_stack_frame to r4 - r11 register
STMFD R0!, {R4 - R11} @; push exception_stack_frame to server SP.
pop {r8-r11}
LDR R3, =svc_exit
STR R3, [R0, #20] @; update LR
STR R2, [R0, #24] @; update api to PC
MSR PSP, R0 @; update SP, API is executed with kernel SP
@; set to thread-privilege mode.
MRS R3, CONTROL
BIC R3, R3, #0x01
ORR R3, R3, #0x02
MSR CONTROL, R3
POP {LR} @; 0xFFFFFFED
ORR LR, LR, #0x10
BX LR
/*
* void svc_exit(void);
*/
.global svc_exit
.type svc_exit, % function
svc_exit:
@; get user SP.
PUSH {R0} @; push result to SP.
BL lwp_get_kernel_sp
ldr r3, [r0, #-4]
pop {r0}
ldr lr, [r3, #20]
ldr r1, [r3, #24] @; load pc
add r3, #32 @; exception_stack_frame size
MSR PSP, R3 @; restore app stack pointer
@; restore to PSP & thread-unprivilege mode.
MRS R2, CONTROL
ORR R2, R2, #0x03
MSR CONTROL, R2
@; return to lwp.
ORR R1, R1, #0x01 @; only Thumb-mode.
BX R1 @; return to user app.

136
components/lwp/arch/arm/cortex-m7/lwp_iar.S Normal file
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;/*
; * File : lwp_iar.S
; * This file is part of RT-Thread RTOS
; * COPYRIGHT (C) 2006 - 2018, RT-Thread Development Team
; *
; * This program is free software; you can redistribute it and/or modify
; * it under the terms of the GNU General Public License as published by
; * the Free Software Foundation; either version 2 of the License, or
; * (at your option) any later version.
; *
; * This program is distributed in the hope that it will be useful,
; * but WITHOUT ANY WARRANTY; without even the implied warranty of
; * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
; * GNU General Public License for more details.
; *
; * You should have received a copy of the GNU General Public License along
; * with this program; if not, write to the Free Software Foundation, Inc.,
; * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
; *
; * Change Logs:
; * Date Author Notes
; */
SECTION .text:CODE(2)
THUMB
REQUIRE8
PRESERVE8
;/*
; * void* lwp_get_sys_api(rt_uint32_t number);
; */
IMPORT lwp_get_sys_api
IMPORT lwp_get_kernel_sp
IMPORT lwp_set_kernel_sp
;/*
; * void lwp_user_entry(args, text, data);
; */
EXPORT lwp_user_entry
lwp_user_entry:
PUSH {R0-R3} ; push text&data addr.
MOV R0, SP ; v1 = SP
BL lwp_set_kernel_sp ; lwp_set_kernel_sp(v1)
; set CPU to user-thread mode.
MRS R2, CONTROL
ORR R2, R2, #0x03 ; use PSP, user-thread mode.
MSR CONTROL, R2
POP {R0-R3} ; pop app address to R1.
; set data address.
MOV R9, R2
; run app, only Thumb-mode.
ORR R1, R1, #0x01
BX R1
;/*
; * void SVC_Handler(void);
; */
EXPORT SVC_Handler
SVC_Handler:
PUSH {LR}
; get user SP.
TST LR, #0x4
ITE EQ
MRSEQ R1, MSP
MRSNE R1, PSP
PUSH {R1} ; push app SP.
; get SVC number.
mov R0, R7
; get kernel system API
BL lwp_get_sys_api
PUSH {R0} ; push api
; get kernel SP to R0.
BL lwp_get_kernel_sp
POP {R2} ; pop api to R2.
POP {R1} ; pop app SP to R1.
stmfd r0!, {r1} ; save app SP to kernel SP
;push app parm5~6 to kernel SP
STMFD R0!, {R4 - R5}
; copy R1(app SP) to R0(kernel SP).
push {r8-r11}
LDMFD R1, {R4 - R11} ; pop exception_stack_frame to r4 - r11 register
STMFD R0!, {R4 - R11} ; push exception_stack_frame to server SP.
pop {r8-r11}
LDR R3, =svc_exit
STR R3, [R0, #20] ; update LR
STR R2, [R0, #24] ; update api to PC
MSR PSP, R0 ; update SP, API is executed with kernel SP
; set to thread-privilege mode.
MRS R3, CONTROL
BIC R3, R3, #0x01
ORR R3, R3, #0x02
MSR CONTROL, R3
POP {LR} ; 0xFFFFFFED
ORR LR, LR, #0x10
BX LR
;/*
; * void svc_exit(void);
; */
EXPORT svc_exit
svc_exit:
; get user SP.
PUSH {R0} ; push result to SP.
BL lwp_get_kernel_sp
ldr r3, [r0, #-4]
pop {r0}
ldr lr, [r3, #20]
ldr r1, [r3, #24] ; load pc
add r3, r3, #32 ; exception_stack_frame size
MSR PSP, R3 ; restore app stack pointer
; restore to PSP & thread-unprivilege mode.
MRS R2, CONTROL
ORR R2, R2, #0x03
MSR CONTROL, R2
; return to lwp.
ORR R1, R1, #0x01 ; only Thumb-mode.
BX R1 ; return to user app.
END

148
components/lwp/arch/arm/cortex-m7/lwp_rvds.S Normal file
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@ -0,0 +1,148 @@
;/*
; * File : lwp_rvds.S
; * This file is part of RT-Thread RTOS
; * COPYRIGHT (C) 2006 - 2018, RT-Thread Development Team
; *
; * This program is free software; you can redistribute it and/or modify
; * it under the terms of the GNU General Public License as published by
; * the Free Software Foundation; either version 2 of the License, or
; * (at your option) any later version.
; *
; * This program is distributed in the hope that it will be useful,
; * but WITHOUT ANY WARRANTY; without even the implied warranty of
; * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
; * GNU General Public License for more details.
; *
; * You should have received a copy of the GNU General Public License along
; * with this program; if not, write to the Free Software Foundation, Inc.,
; * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
; *
; * Change Logs:
; * Date Author Notes
; */
AREA |.text|, CODE, READONLY, ALIGN=2
THUMB
REQUIRE8
PRESERVE8
;/*
; * void* lwp_get_sys_api(rt_uint32_t number);
; */
IMPORT lwp_get_sys_api
IMPORT lwp_get_kernel_sp
IMPORT lwp_set_kernel_sp
;/*
; * void lwp_user_entry(args, text, data);
; */
lwp_user_entry PROC
EXPORT lwp_user_entry
PUSH {R0-R3} ; push text&data addr.
MOV R0, SP ; v1 = SP
BL lwp_set_kernel_sp ; lwp_set_kernel_sp(v1)
; set CPU to user-thread mode.
MRS R2, CONTROL
ORR R2, R2, #0x03 ; use PSP, user-thread mode.
MSR CONTROL, R2
POP {R0-R3} ; pop app address to R1.
; set data address.
MOV R9, R2
; run app, only Thumb-mode.
ORR R1, R1, #0x01
BX R1
; never reach here!
ENDP
;/*
; * void SVC_Handler(void);
; */
SVC_Handler PROC
EXPORT SVC_Handler
PUSH {LR}
; get user SP.
TST LR, #0x4
ITE EQ
MRSEQ R1, MSP
MRSNE R1, PSP
PUSH {R1} ; push app SP.
; get SVC number.
mov R0, R7
; get kernel system API
BL lwp_get_sys_api
PUSH {R0} ; push api
; get kernel SP to R0.
BL lwp_get_kernel_sp
POP {R2} ; pop api to R2.
POP {R1} ; pop app SP to R1.
stmfd r0!, {r1} ; save app SP to kernel SP
;push app parm5~6 to kernel SP
STMFD R0!, {R4 - R5}
; copy R1(app SP) to R0(kernel SP).
push {r8-r11}
LDMFD R1, {R4 - R11} ; pop exception_stack_frame to r4 - r11 register
STMFD R0!, {R4 - R11} ; push exception_stack_frame to server SP.
pop {r8-r11}
LDR R3, =svc_exit
STR R3, [R0, #20] ; update LR
STR R2, [R0, #24] ; update api to PC
MSR PSP, R0 ; update SP, API is executed with kernel SP
; set to thread-privilege mode.
MRS R3, CONTROL
BIC R3, R3, #0x01
ORR R3, R3, #0x02
MSR CONTROL, R3
POP {LR} ; 0xFFFFFFED
ORR LR, LR, #0x10
BX LR
ENDP
;/*
; * void svc_exit(void);
; */
svc_exit PROC
EXPORT svc_exit
; get user SP.
PUSH {R0} ; push result to SP.
BL lwp_get_kernel_sp
ldr r3, [r0, #-4]
pop {r0}
ldr lr, [r3, #20]
ldr r1, [r3, #24] ; load pc
add r3, #32 ; exception_stack_frame size
MSR PSP, R3 ; restore app stack pointer
; restore to PSP & thread-unprivilege mode.
MRS R2, CONTROL
ORR R2, R2, #0x03
MSR CONTROL, R2
; return to lwp.
ORR R1, R1, #0x01 ; only Thumb-mode.
BX R1 ; return to user app.
ENDP
ALIGN
END

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/*
* File : lwp_gcc.c
* This file is part of RT-Thread RTOS
* COPYRIGHT (C) 2006 - 2018, RT-Thread Development Team
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License along
* with this program; if not, write to the Free Software Foundation, Inc.,
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
*
* Change Logs:
* Date Author Notes
*/
#define Mode_USR 0x10
#define Mode_FIQ 0x11
#define Mode_IRQ 0x12
#define Mode_SVC 0x13
#define Mode_MON 0x16
#define Mode_ABT 0x17
#define Mode_UDF 0x1B
#define Mode_SYS 0x1F
#define A_Bit 0x100
#define I_Bit 0x80 @; when I bit is set, IRQ is disabled
#define F_Bit 0x40 @; when F bit is set, FIQ is disabled
#define T_Bit 0x20
.cpu cortex-a9
.syntax unified
.text
/*
* void lwp_user_entry(args, text, data);
*/
.global lwp_user_entry
.type lwp_user_entry, % function
lwp_user_entry:
mrs r9, cpsr
bic r9, #0x1f
orr r9, #Mode_USR
cpsid i
msr spsr, r9
/* set data address. */
mov r9, r2
movs pc, r1
/*
* void SVC_Handler(void);
*/
.global SVC_Handler
.type SVC_Handler, % function
SVC_Handler:
push {lr}
mrs lr, spsr
push {r4, r5, lr}
cpsie i
push {r0 - r3, r12}
and r0, r7, #0xff
bl lwp_get_sys_api
cmp r0, #0 /* r0 = api */
mov lr, r0
pop {r0 - r3, r12}
beq svc_exit
blx lr
svc_exit:
cpsid i
pop {r4, r5, lr}
msr spsr_cxsf, lr
pop {lr}
movs pc, lr

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/*
* File : clock.c
* This file is part of RT-Thread RTOS
* COPYRIGHT (C) 2006 - 2018, RT-Thread Development Team
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License along
* with this program; if not, write to the Free Software Foundation, Inc.,
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
*
* Change Logs:
* Date Author Notes
*/
#include <rtthread.h>
#include <rthw.h>
#include <dfs_posix.h>
#ifndef RT_USING_DFS
#error "lwp need file system(RT_USING_DFS)"
#endif
#include "lwp.h"
#define DBG_ENABLE
#define DBG_SECTION_NAME "LWP"
#define DBG_COLOR
#define DBG_LEVEL DBG_WARNING
#include <rtdbg.h>
extern void lwp_user_entry(void *args, const void *text, void *data);
/**
* RT-Thread light-weight process
*/
void lwp_set_kernel_sp(uint32_t *sp)
{
struct rt_lwp *user_data;
user_data = (struct rt_lwp *)rt_thread_self()->lwp;
user_data->kernel_sp = sp;
}
uint32_t *lwp_get_kernel_sp(void)
{
struct rt_lwp *user_data;
user_data = (struct rt_lwp *)rt_thread_self()->lwp;
return user_data->kernel_sp;
}
static int lwp_argscopy(struct rt_lwp *lwp, int argc, char **argv)
{
int size = sizeof(int)*3; /* store argc, argv, NULL */
int *args;
char *str;
char **new_argv;
int i;
int len;
for (i = 0; i < argc; i ++)
{
size += (rt_strlen(argv[i]) + 1);
}
size += (sizeof(int) * argc);
args = (int*)rt_malloc(size);
if (args == RT_NULL)
return -1;
str = (char*)((int)args + (argc + 3) * sizeof(int));
new_argv = (char**)&args[2];
args[0] = argc;
args[1] = (int)new_argv;
for (i = 0; i < argc; i ++)
{
len = rt_strlen(argv[i]) + 1;
new_argv[i] = str;
rt_memcpy(str, argv[i], len);
str += len;
}
new_argv[i] = 0;
lwp->args = args;
return 0;
}
static int lwp_load(const char *filename, struct rt_lwp *lwp, uint8_t *load_addr, size_t addr_size)
{
int fd;
uint8_t *ptr;
int result = RT_EOK;
int nbytes;
struct lwp_header header;
struct lwp_chunk chunk;
/* check file name */
RT_ASSERT(filename != RT_NULL);
/* check lwp control block */
RT_ASSERT(lwp != RT_NULL);
if (load_addr != RT_NULL)
{
lwp->lwp_type = LWP_TYPE_FIX_ADDR;
ptr = load_addr;
}
else
{
lwp->lwp_type = LWP_TYPE_DYN_ADDR;
ptr = RT_NULL;
}
/* open lwp */
fd = open(filename, 0, O_RDONLY);
if (fd < 0)
{
dbg_log(DBG_ERROR, "open file:%s failed!\n", filename);
result = -RT_ENOSYS;
goto _exit;
}
/* read lwp header */
nbytes = read(fd, &header, sizeof(struct lwp_header));
if (nbytes != sizeof(struct lwp_header))
{
dbg_log(DBG_ERROR, "read lwp header return error size: %d!\n", nbytes);
result = -RT_EIO;
goto _exit;
}
/* check file header */
if (header.magic != LWP_MAGIC)
{
dbg_log(DBG_ERROR, "erro header magic number: 0x%02X\n", header.magic);
result = -RT_EINVAL;
goto _exit;
}
/* read text chunk info */
nbytes = read(fd, &chunk, sizeof(struct lwp_chunk));
if (nbytes != sizeof(struct lwp_chunk))
{
dbg_log(DBG_ERROR, "read text chunk info failed!\n");
result = -RT_EIO;
goto _exit;
}
dbg_log(DBG_LOG, "chunk name: %s, total len %d, data %d, need space %d!\n",
"text", /*chunk.name*/ chunk.total_len, chunk.data_len, chunk.data_len_space);
/* load text */
{
lwp->text_size = RT_ALIGN(chunk.data_len_space, 4);
if (load_addr)
lwp->text_entry = ptr;
else
{
#ifdef RT_USING_CACHE
lwp->text_entry = (rt_uint8_t *)rt_malloc_align(lwp->text_size, RT_CPU_CACHE_LINE_SZ);
#else
lwp->text_entry = (rt_uint8_t *)rt_malloc(lwp->text_size);
#endif
if (lwp->text_entry == RT_NULL)
{
dbg_log(DBG_ERROR, "alloc text memory faild!\n");
result = -RT_ENOMEM;
goto _exit;
}
else
{
dbg_log(DBG_LOG, "lwp text malloc : %p, size: %d!\n", lwp->text_entry, lwp->text_size);
}
}
dbg_log(DBG_INFO, "load text %d => (0x%08x, 0x%08x)\n", lwp->text_size, (uint32_t)lwp->text_entry, (uint32_t)lwp->text_entry + lwp->text_size);
nbytes = read(fd, lwp->text_entry, chunk.data_len);
if (nbytes != chunk.data_len)
{
dbg_log(DBG_ERROR, "read text region from file failed!\n");
result = -RT_EIO;
goto _exit;
}
#ifdef RT_USING_CACHE
else
{
rt_hw_cpu_dcache_ops(RT_HW_CACHE_FLUSH, lwp->text_entry, lwp->text_size);
rt_hw_cpu_icache_ops(RT_HW_CACHE_INVALIDATE, lwp->text_entry, lwp->text_size);
}
#endif
if (ptr != RT_NULL) ptr += nbytes;
/* skip text hole */
if ((chunk.total_len - sizeof(struct lwp_chunk) - chunk.data_len))
{
dbg_log(DBG_LOG, "skip text hole %d!\n", (chunk.total_len - sizeof(struct lwp_chunk) - chunk.data_len));
lseek(fd, (chunk.total_len - sizeof(struct lwp_chunk) - chunk.data_len), SEEK_CUR);
}
}
/* load data */
nbytes = read(fd, &chunk, sizeof(struct lwp_chunk));
if (nbytes != sizeof(struct lwp_chunk))
{
dbg_log(DBG_ERROR, "read data chunk info failed!\n");
result = -RT_EIO;
goto _exit;
}
dbg_log(DBG_LOG, "chunk name: %s, total len %d, data %d, need space %d!\n",
chunk.name, chunk.total_len, chunk.data_len, chunk.data_len_space);
{
lwp->data_size = RT_ALIGN(chunk.data_len_space, 4);
if (load_addr)
lwp->data = ptr;
else
{
lwp->data = rt_malloc(lwp->data_size);
if (lwp->data == RT_NULL)
{
dbg_log(DBG_ERROR, "alloc data memory faild!\n");
result = -RT_ENOMEM;
goto _exit;
}
else
{
dbg_log(DBG_LOG, "lwp data malloc : %p, size: %d!\n", lwp->data, lwp->data_size);
rt_memset(lwp->data, 0, lwp->data_size);
}
}
dbg_log(DBG_INFO, "load data %d => (0x%08x, 0x%08x)\n", lwp->data_size, (uint32_t)lwp->data, (uint32_t)lwp->data + lwp->data_size);
nbytes = read(fd, lwp->data, chunk.data_len);
if (nbytes != chunk.data_len)
{
dbg_log(DBG_ERROR, "read data region from file failed!\n");
result = -RT_ERROR;
goto _exit;
}
}
_exit:
if (fd >= 0)
close(fd);
if (result != RT_EOK)
{
if (lwp->lwp_type == LWP_TYPE_DYN_ADDR)
{
dbg_log(DBG_ERROR, "lwp dynamic load faild, %d\n", result);
if (lwp->text_entry)
{
dbg_log(DBG_LOG, "lwp text free: %p\n", lwp->text_entry);
#ifdef RT_USING_CACHE
rt_free_align(lwp->text_entry);
#else
rt_free(lwp->text_entry);
#endif
}
if (lwp->data)
{
dbg_log(DBG_LOG, "lwp data free: %p\n", lwp->data);
rt_free(lwp->data);
}
}
}
return result;
}
static void lwp_cleanup(struct rt_thread *tid)
{
struct rt_lwp *lwp;
dbg_log(DBG_INFO, "thread: %s, stack_addr: %08X\n", tid->name, tid->stack_addr);
lwp = (struct rt_lwp *)tid->lwp;
if (lwp->lwp_type == LWP_TYPE_DYN_ADDR)
{
dbg_log(DBG_INFO, "dynamic lwp\n");
if (lwp->text_entry)
{
dbg_log(DBG_LOG, "lwp text free: %p\n", lwp->text_entry);
#ifdef RT_USING_CACHE
rt_free_align(lwp->text_entry);
#else
rt_free(lwp->text_entry);
#endif
}
if (lwp->data)
{
dbg_log(DBG_LOG, "lwp data free: %p\n", lwp->data);
rt_free(lwp->data);
}
}
dbg_log(DBG_LOG, "lwp free memory pages\n");
rt_lwp_mem_deinit(lwp);
/* cleanup fd table */
rt_free(lwp->fdt.fds);
rt_free(lwp->args);
dbg_log(DBG_LOG, "lwp free: %p\n", lwp);
rt_free(lwp);
/* TODO: cleanup fd table */
}
static void lwp_thread(void *parameter)
{
rt_thread_t tid;
struct rt_lwp *lwp;
lwp = (struct rt_lwp *)parameter;
rt_lwp_mem_init(lwp);
tid = rt_thread_self();
tid->lwp = lwp;
tid->cleanup = lwp_cleanup;
lwp_user_entry(lwp->args, lwp->text_entry, lwp->data);
}
struct rt_lwp *rt_lwp_self(void)
{
return (struct rt_lwp *)rt_thread_self()->lwp;
}
int exec(char *filename, int argc, char **argv)
{
struct rt_lwp *lwp;
int result;
if (filename == RT_NULL)
return -RT_ERROR;
lwp = (struct rt_lwp *)rt_malloc(sizeof(struct rt_lwp));
if (lwp == RT_NULL)
{
dbg_log(DBG_ERROR, "lwp struct out of memory!\n");
return -RT_ENOMEM;
}
dbg_log(DBG_INFO, "lwp malloc : %p, size: %d!\n", lwp, sizeof(struct rt_lwp));
rt_memset(lwp, 0, sizeof(*lwp));
if (lwp_argscopy(lwp, argc, argv) != 0)
{
rt_free(lwp);
return -ENOMEM;
}
result = lwp_load(filename, lwp, RT_NULL, 0);
if (result == RT_EOK)
{
rt_thread_t tid;
tid = rt_thread_create("user", lwp_thread, (void *)lwp,
1024 * 4, 2, 200);
if (tid != RT_NULL)
{
dbg_log(DBG_LOG, "lwp kernel => (0x%08x, 0x%08x)\n", (rt_uint32_t)tid->stack_addr, (rt_uint32_t)tid->stack_addr + tid->stack_size);
rt_thread_startup(tid);
return RT_EOK;
}
else
{
#ifdef RT_USING_CACHE
rt_free_align(lwp->text_entry);
#else
rt_free(lwp->text_entry);
#endif
rt_free(lwp->data);
}
}
rt_free(lwp->args);
rt_free(lwp);
return -RT_ERROR;
}

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/*
* File : lwp.h
* This file is part of RT-Thread RTOS
* COPYRIGHT (C) 2006 - 2018, RT-Thread Development Team
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License along
* with this program; if not, write to the Free Software Foundation, Inc.,
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
*
* Change Logs:
* Date Author Notes
*/
#ifndef __LWP_H__
#define __LWP_H__
#define LWP_MAGIC 0x5A
#define LWP_TYPE_FIX_ADDR 0x01
#define LWP_TYPE_DYN_ADDR 0x02
#define LWP_ARG_MAX 8
#include <stdint.h>
#include <rtthread.h>
#include <dfs.h>
#include <lwp_memheap.h>
struct rt_lwp
{
uint8_t lwp_type;
uint8_t heap_cnt;
uint8_t reserv[2];
rt_list_t hlist; /**< headp list */
uint8_t *text_entry;
uint32_t text_size;
uint8_t *data;
uint32_t data_size;
uint32_t *kernel_sp; /**< kernel stack point */
struct dfs_fdtable fdt;
void *args;
};
struct lwp_header
{
uint8_t magic;
uint8_t compress_encrypt_algo;
uint16_t reserved;
uint32_t crc32;
};
struct lwp_chunk
{
uint32_t total_len;
char name[4];
uint32_t data_len;
uint32_t data_len_space;
};
extern struct rt_lwp *rt_lwp_self(void);
extern void rt_lwp_mem_init(struct rt_lwp *lwp);
extern void rt_lwp_mem_deinit(struct rt_lwp *lwp);
extern void *rt_lwp_mem_malloc(rt_uint32_t size);
extern void rt_lwp_mem_free(void *addr);
extern void *rt_lwp_mem_realloc(void *rmem, rt_size_t newsize);
#endif

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/*
* File : lwp_mem.c
* This file is part of RT-Thread RTOS
* COPYRIGHT (C) 2012, RT-Thread Development Team
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License along
* with this program; if not, write to the Free Software Foundation, Inc.,
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
*
* Change Logs:
* Date Author Notes
* 2018-03-24 Tanek the first version
*/
#include <rtthread.h>
#include <lwp.h>
#define DBG_ENABLE
#define DBG_SECTION_NAME "LWPMEM"
#define DBG_COLOR
#define DBG_LEVEL DBG_WARNING
#include <rtdbg.h>
// todo: remove repleat code
#define RT_MEMHEAP_SIZE RT_ALIGN(sizeof(struct rt_lwp_memheap_item), RT_ALIGN_SIZE)
#define MEMITEM_SIZE(item) ((rt_uint32_t)item->next - (rt_uint32_t)item - RT_MEMHEAP_SIZE)
#ifndef LWP_MEM_PAGE_SIZE
#define LWP_MEM_PAGE_SIZE (4 * 1024)
#endif
#ifndef LWP_MEM_MAX_PAGE_COUNT
#define LWP_MEM_MAX_PAGE_COUNT (256 * 4)
#endif
static void *rt_lwp_malloc_page(struct rt_lwp *lwp, rt_size_t npages)
{
void *chunk;
char name[6];
struct rt_lwp_memheap *lwp_heap;
rt_size_t page_cnt;
RT_ASSERT(lwp != RT_NULL);
page_cnt = lwp->heap_cnt + npages;
if (page_cnt > LWP_MEM_MAX_PAGE_COUNT)
{
dbg_log(DBG_ERROR, "alloc new page failed, lwp memory size out of limited: %d\n", page_cnt);
return RT_NULL;
}
lwp_heap = rt_malloc(sizeof(struct rt_lwp_memheap));
if (lwp_heap == RT_NULL)
{
dbg_log(DBG_ERROR, "alloc new page head failed, out of memory : %d\n", page_cnt);
return RT_NULL;
}
chunk = rt_malloc(npages * LWP_MEM_PAGE_SIZE);
if (chunk == RT_NULL)
{
dbg_log(DBG_ERROR, "alloc new page buffer failed, out of memory : %d\n", page_cnt);
rt_free(lwp_heap);
return RT_NULL;
}
dbg_log(DBG_LOG, "lwp alloc page: %d\n", npages);
rt_sprintf(name, "lwp%02x", lwp->heap_cnt);
rt_lwp_memheap_init(lwp_heap, name, chunk, npages * LWP_MEM_PAGE_SIZE);
rt_list_insert_before(&lwp->hlist, &lwp_heap->mlist);
lwp->heap_cnt += npages;
return chunk;
}
static void rt_lwp_free_page(struct rt_lwp *lwp, struct rt_lwp_memheap *lwp_heap)
{
rt_size_t npages;
RT_ASSERT(lwp != RT_NULL);
RT_ASSERT(lwp_heap != RT_NULL);
RT_ASSERT(lwp_heap->start_addr != RT_NULL);
npages = lwp_heap->pool_size / LWP_MEM_PAGE_SIZE;
lwp->heap_cnt -= npages;
dbg_log(DBG_LOG, "lwp free page: %d\n", npages);
rt_list_remove(&lwp_heap->mlist);
rt_free(lwp_heap->start_addr);
rt_free(lwp_heap);
}
void rt_lwp_mem_init(struct rt_lwp *lwp)
{
RT_ASSERT(lwp != RT_NULL);
rt_list_init(&lwp->hlist);
}
void rt_lwp_mem_deinit(struct rt_lwp *lwp)
{
struct rt_list_node *node;
RT_ASSERT(lwp != RT_NULL);
node = lwp->hlist.next;
while (node != &(lwp->hlist))
{
struct rt_lwp_memheap *lwp_heap;
lwp_heap = rt_list_entry(node, struct rt_lwp_memheap, mlist);
RT_ASSERT(lwp_heap != RT_NULL);
/* update note before free page*/
node = node->next;
rt_lwp_free_page(lwp, lwp_heap);
}
}
void *rt_lwp_mem_malloc(rt_uint32_t size)
{
struct rt_lwp *lwp;
struct rt_list_node *node;
void *addr = RT_NULL;
rt_uint32_t npages;
if (size == 0)
return RT_NULL;
lwp = rt_lwp_self();
RT_ASSERT(lwp != RT_NULL);
for (node = lwp->hlist.next; node != &(lwp->hlist); node = node->next)
{
struct rt_lwp_memheap *lwp_heap;
lwp_heap = rt_list_entry(node, struct rt_lwp_memheap, mlist);
addr = rt_lwp_memheap_alloc(lwp_heap, size);
if (addr != RT_NULL)
{
dbg_log(DBG_LOG, "lwp alloc 0x%x/%d\n", addr, size);
return addr;
}
}
npages = (size + rt_lwp_memheap_unavailable_size_get() + LWP_MEM_PAGE_SIZE) / LWP_MEM_PAGE_SIZE;
if (RT_NULL != rt_lwp_malloc_page(lwp, npages))
return rt_lwp_mem_malloc(size);
else
return RT_NULL;
}
void rt_lwp_mem_free(void *addr)
{
struct rt_lwp_memheap_item *header_ptr;
struct rt_lwp_memheap *lwp_heap;
if (addr == RT_NULL)
return ;
/* get memory item */
header_ptr = (struct rt_lwp_memheap_item *)((rt_uint8_t *)addr - RT_MEMHEAP_SIZE);
RT_ASSERT(header_ptr);
lwp_heap = header_ptr->pool_ptr;
RT_ASSERT(lwp_heap);
dbg_log(DBG_LOG, "lwp free 0x%x\n", addr);
rt_lwp_memheap_free((void *)addr);
if (rt_lwp_memheap_is_empty(lwp_heap))
{
rt_lwp_free_page(rt_lwp_self(), lwp_heap);
}
}
void *rt_lwp_mem_realloc(void *rmem, rt_size_t newsize)
{
void *new_ptr;
struct rt_lwp_memheap_item *header_ptr;
if (rmem == RT_NULL)
return rt_lwp_mem_malloc(newsize);
if (newsize == 0)
{
rt_lwp_mem_free(rmem);
return RT_NULL;
}
/* get old memory item */
header_ptr = (struct rt_lwp_memheap_item *)
((rt_uint8_t *)rmem - RT_MEMHEAP_SIZE);
new_ptr = rt_lwp_memheap_realloc(header_ptr->pool_ptr, rmem, newsize);
if (new_ptr == RT_NULL)
{
/* allocate memory block from other memheap */
new_ptr = rt_lwp_mem_malloc(newsize);
if (new_ptr != RT_NULL && rmem != RT_NULL)
{
rt_size_t oldsize;
/* get the size of old memory block */
oldsize = MEMITEM_SIZE(header_ptr);
if (newsize > oldsize)
rt_memcpy(new_ptr, rmem, oldsize);
else
rt_memcpy(new_ptr, rmem, newsize);
dbg_log(DBG_LOG, "lwp realloc with memcpy 0x%x -> 0x%x/%d\n", rmem, new_ptr, newsize);
rt_lwp_mem_free(rmem);
}
}
dbg_log(DBG_LOG, "lwp realloc in same address 0x%x/%d\n", rmem, newsize);
return new_ptr;
}

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/*
* File : lwp_mem.h
* This file is part of RT-Thread RTOS
* COPYRIGHT (C) 2006 - 2018, RT-Thread Development Team
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License along
* with this program; if not, write to the Free Software Foundation, Inc.,
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
*
* Change Logs:
* Date Author Notes
*/
#ifndef __LWP_MEM_H__
#define __LWP_MEM_H__
extern void rt_lwp_mem_init(struct rt_lwp *lwp);
extern void rt_lwp_mem_deinit(struct rt_lwp *lwp);
extern void *rt_lwp_mem_malloc(rt_uint32_t size);
extern void rt_lwp_mem_free(void *addr);
extern void *rt_lwp_mem_realloc(void *rmem, rt_size_t newsize);
#endif

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/*
* File : lwp_memheap.c
* This file is part of RT-Thread RTOS
* COPYRIGHT (C) 2012, RT-Thread Development Team
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License along
* with this program; if not, write to the Free Software Foundation, Inc.,
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
*
* Change Logs:
* Date Author Notes
* 2012-04-10 Bernard first implementation
* 2012-10-16 Bernard add the mutex lock for heap object.
* 2012-12-29 Bernard memheap can be used as system heap.
* change mutex lock to semaphore lock.
* 2013-04-10 Bernard add rt_lwp_memheap_realloc function.
* 2013-05-24 Bernard fix the rt_lwp_memheap_realloc issue.
* 2013-07-11 Grissiom fix the memory block splitting issue.
* 2013-07-15 Grissiom optimize rt_lwp_memheap_realloc
*/
#include <rthw.h>
#include <rtthread.h>
#include <lwp.h>
/* dynamic pool magic and mask */
#define RT_MEMHEAP_MAGIC 0x1ea01ea0
#define RT_MEMHEAP_MASK 0xfffffffe
#define RT_MEMHEAP_USED 0x01
#define RT_MEMHEAP_FREED 0x00
#define RT_MEMHEAP_IS_USED(i) ((i)->magic & RT_MEMHEAP_USED)
#define RT_MEMHEAP_MINIALLOC 12
#define RT_MEMHEAP_SIZE RT_ALIGN(sizeof(struct rt_lwp_memheap_item), RT_ALIGN_SIZE)
#define MEMITEM_SIZE(item) ((rt_uint32_t)item->next - (rt_uint32_t)item - RT_MEMHEAP_SIZE)
/*
* The initialized memory pool will be:
* +-----------------------------------+--------------------------+
* | whole freed memory block | Used Memory Block Tailer |
* +-----------------------------------+--------------------------+
*
* block_list --> whole freed memory block
*
* The length of Used Memory Block Tailer is 0,
* which is prevents block merging across list
*/
rt_err_t rt_lwp_memheap_init(struct rt_lwp_memheap *memheap,
const char *name,
void *start_addr,
rt_uint32_t size)
{
struct rt_lwp_memheap_item *item;
RT_ASSERT(memheap != RT_NULL);
/* initialize pool object */
memheap->start_addr = start_addr;
memheap->pool_size = RT_ALIGN_DOWN(size, RT_ALIGN_SIZE);
memheap->available_size = memheap->pool_size - (2 * RT_MEMHEAP_SIZE);
memheap->max_used_size = memheap->pool_size - memheap->available_size;
/* initialize the free list header */
item = &(memheap->free_header);
item->magic = RT_MEMHEAP_MAGIC;
item->pool_ptr = memheap;
item->next = RT_NULL;
item->prev = RT_NULL;
item->next_free = item;
item->prev_free = item;
/* set the free list to free list header */
memheap->free_list = item;
/* initialize the first big memory block */
item = (struct rt_lwp_memheap_item *)start_addr;
item->magic = RT_MEMHEAP_MAGIC;
item->pool_ptr = memheap;
item->next = RT_NULL;
item->prev = RT_NULL;
item->next_free = item;
item->prev_free = item;
item->next = (struct rt_lwp_memheap_item *)
((rt_uint8_t *)item + memheap->available_size + RT_MEMHEAP_SIZE);
item->prev = item->next;
/* block list header */
memheap->block_list = item;
/* place the big memory block to free list */
item->next_free = memheap->free_list->next_free;
item->prev_free = memheap->free_list;
memheap->free_list->next_free->prev_free = item;
memheap->free_list->next_free = item;
/* move to the end of memory pool to build a small tailer block,
* which prevents block merging
*/
item = item->next;
/* it's a used memory block */
item->magic = RT_MEMHEAP_MAGIC | RT_MEMHEAP_USED;
item->pool_ptr = memheap;
item->next = (struct rt_lwp_memheap_item *)start_addr;
item->prev = (struct rt_lwp_memheap_item *)start_addr;
/* not in free list */
item->next_free = item->prev_free = RT_NULL;
/* initialize semaphore lock */
rt_sem_init(&(memheap->lock), name, 1, RT_IPC_FLAG_FIFO);
RT_DEBUG_LOG(RT_DEBUG_MEMHEAP,
("memory heap: start addr 0x%08x, size %d, free list header 0x%08x\n",
start_addr, size, &(memheap->free_header)));
return RT_EOK;
}
void *rt_lwp_memheap_alloc(struct rt_lwp_memheap *heap, rt_uint32_t size)
{
rt_err_t result;
rt_uint32_t free_size;
struct rt_lwp_memheap_item *header_ptr;
RT_ASSERT(heap != RT_NULL);
/* align allocated size */
size = RT_ALIGN(size, RT_ALIGN_SIZE);
if (size < RT_MEMHEAP_MINIALLOC)
size = RT_MEMHEAP_MINIALLOC;
RT_DEBUG_LOG(RT_DEBUG_MEMHEAP, ("allocate %d on heap:%8.*s",
size, RT_NAME_MAX, heap->parent.name));
if (size < heap->available_size)
{
/* search on free list */
free_size = 0;
/* lock memheap */
result = rt_sem_take(&(heap->lock), RT_WAITING_FOREVER);
if (result != RT_EOK)
{
rt_set_errno(result);
return RT_NULL;
}
/* get the first free memory block */
header_ptr = heap->free_list->next_free;
while (header_ptr != heap->free_list && free_size < size)
{
/* get current freed memory block size */
free_size = MEMITEM_SIZE(header_ptr);
if (free_size < size)
{
/* move to next free memory block */
header_ptr = header_ptr->next_free;
}
}
/* determine if the memory is available. */
if (free_size >= size)
{
/* a block that satisfies the request has been found. */
/* determine if the block needs to be split. */
if (free_size >= (size + RT_MEMHEAP_SIZE + RT_MEMHEAP_MINIALLOC))
{
struct rt_lwp_memheap_item *new_ptr;
/* split the block. */
new_ptr = (struct rt_lwp_memheap_item *)
(((rt_uint8_t *)header_ptr) + size + RT_MEMHEAP_SIZE);
RT_DEBUG_LOG(RT_DEBUG_MEMHEAP,
("split: block[0x%08x] nextm[0x%08x] prevm[0x%08x] to new[0x%08x]\n",
header_ptr,
header_ptr->next,
header_ptr->prev,
new_ptr));
/* mark the new block as a memory block and freed. */
new_ptr->magic = RT_MEMHEAP_MAGIC;
/* put the pool pointer into the new block. */
new_ptr->pool_ptr = heap;
/* break down the block list */
new_ptr->prev = header_ptr;
new_ptr->next = header_ptr->next;
header_ptr->next->prev = new_ptr;
header_ptr->next = new_ptr;
/* remove header ptr from free list */
header_ptr->next_free->prev_free = header_ptr->prev_free;
header_ptr->prev_free->next_free = header_ptr->next_free;
header_ptr->next_free = RT_NULL;
header_ptr->prev_free = RT_NULL;
/* insert new_ptr to free list */
new_ptr->next_free = heap->free_list->next_free;
new_ptr->prev_free = heap->free_list;
heap->free_list->next_free->prev_free = new_ptr;
heap->free_list->next_free = new_ptr;
RT_DEBUG_LOG(RT_DEBUG_MEMHEAP, ("new ptr: next_free 0x%08x, prev_free 0x%08x\n",
new_ptr->next_free,
new_ptr->prev_free));
/* decrement the available byte count. */
heap->available_size = heap->available_size -
size -
RT_MEMHEAP_SIZE;
if (heap->pool_size - heap->available_size > heap->max_used_size)
heap->max_used_size = heap->pool_size - heap->available_size;
}
else
{
/* decrement the entire free size from the available bytes count. */
heap->available_size = heap->available_size - free_size;
if (heap->pool_size - heap->available_size > heap->max_used_size)
heap->max_used_size = heap->pool_size - heap->available_size;
/* remove header_ptr from free list */
RT_DEBUG_LOG(RT_DEBUG_MEMHEAP,
("one block: block[0x%08x], next_free 0x%08x, prev_free 0x%08x\n",
header_ptr,
header_ptr->next_free,
header_ptr->prev_free));
header_ptr->next_free->prev_free = header_ptr->prev_free;
header_ptr->prev_free->next_free = header_ptr->next_free;
header_ptr->next_free = RT_NULL;
header_ptr->prev_free = RT_NULL;
}
/* Mark the allocated block as not available. */
header_ptr->magic |= RT_MEMHEAP_USED;
/* release lock */
rt_sem_release(&(heap->lock));
/* Return a memory address to the caller. */
RT_DEBUG_LOG(RT_DEBUG_MEMHEAP,
("alloc mem: memory[0x%08x], heap[0x%08x], size: %d\n",
(void *)((rt_uint8_t *)header_ptr + RT_MEMHEAP_SIZE),
header_ptr,
size));
return (void *)((rt_uint8_t *)header_ptr + RT_MEMHEAP_SIZE);
}
/* release lock */
rt_sem_release(&(heap->lock));
}
RT_DEBUG_LOG(RT_DEBUG_MEMHEAP, ("allocate memory: failed\n"));
/* Return the completion status. */
return RT_NULL;
}
void *rt_lwp_memheap_realloc(struct rt_lwp_memheap *heap, void *ptr, rt_size_t newsize)
{
rt_err_t result;
rt_size_t oldsize;
struct rt_lwp_memheap_item *header_ptr;
struct rt_lwp_memheap_item *new_ptr;
if (newsize == 0)
{
rt_lwp_memheap_free(ptr);
return RT_NULL;
}
/* align allocated size */
newsize = RT_ALIGN(newsize, RT_ALIGN_SIZE);
if (newsize < RT_MEMHEAP_MINIALLOC)
newsize = RT_MEMHEAP_MINIALLOC;
if (ptr == RT_NULL)
{
return rt_lwp_memheap_alloc(heap, newsize);
}
/* get memory block header and get the size of memory block */
header_ptr = (struct rt_lwp_memheap_item *)
((rt_uint8_t *)ptr - RT_MEMHEAP_SIZE);
oldsize = MEMITEM_SIZE(header_ptr);
/* re-allocate memory */
if (newsize > oldsize)
{
void *new_ptr;
struct rt_lwp_memheap_item *next_ptr;
/* lock memheap */
result = rt_sem_take(&(heap->lock), RT_WAITING_FOREVER);
if (result != RT_EOK)
{
rt_set_errno(result);
return RT_NULL;
}
next_ptr = header_ptr->next;
/* header_ptr should not be the tail */
RT_ASSERT(next_ptr > header_ptr);
/* check whether the following free space is enough to expand */
if (!RT_MEMHEAP_IS_USED(next_ptr))
{
rt_int32_t nextsize;
nextsize = MEMITEM_SIZE(next_ptr);
RT_ASSERT(next_ptr > 0);
/* Here is the ASCII art of the situation that we can make use of
* the next free node without alloc/memcpy, |*| is the control
* block:
*
* oldsize free node
* |*|-----------|*|----------------------|*|
* newsize >= minialloc
* |*|----------------|*|-----------------|*|
*/
if (nextsize + oldsize > newsize + RT_MEMHEAP_MINIALLOC)
{
/* decrement the entire free size from the available bytes count. */
heap->available_size = heap->available_size - (newsize - oldsize);
if (heap->pool_size - heap->available_size > heap->max_used_size)
heap->max_used_size = heap->pool_size - heap->available_size;
/* remove next_ptr from free list */
RT_DEBUG_LOG(RT_DEBUG_MEMHEAP,
("remove block: block[0x%08x], next_free 0x%08x, prev_free 0x%08x",
next_ptr,
next_ptr->next_free,
next_ptr->prev_free));
next_ptr->next_free->prev_free = next_ptr->prev_free;
next_ptr->prev_free->next_free = next_ptr->next_free;
next_ptr->next->prev = next_ptr->prev;
next_ptr->prev->next = next_ptr->next;
/* build a new one on the right place */
next_ptr = (struct rt_lwp_memheap_item *)((char *)ptr + newsize);
RT_DEBUG_LOG(RT_DEBUG_MEMHEAP,
("new free block: block[0x%08x] nextm[0x%08x] prevm[0x%08x]",
next_ptr,
next_ptr->next,
next_ptr->prev));
/* mark the new block as a memory block and freed. */
next_ptr->magic = RT_MEMHEAP_MAGIC;
/* put the pool pointer into the new block. */
next_ptr->pool_ptr = heap;
next_ptr->prev = header_ptr;
next_ptr->next = header_ptr->next;
header_ptr->next->prev = next_ptr;
header_ptr->next = next_ptr;
/* insert next_ptr to free list */
next_ptr->next_free = heap->free_list->next_free;
next_ptr->prev_free = heap->free_list;
heap->free_list->next_free->prev_free = next_ptr;
heap->free_list->next_free = next_ptr;
RT_DEBUG_LOG(RT_DEBUG_MEMHEAP, ("new ptr: next_free 0x%08x, prev_free 0x%08x",
next_ptr->next_free,
next_ptr->prev_free));
/* release lock */
rt_sem_release(&(heap->lock));
return ptr;
}
}
/* release lock */
rt_sem_release(&(heap->lock));
/* re-allocate a memory block */
new_ptr = (void *)rt_lwp_memheap_alloc(heap, newsize);
if (new_ptr != RT_NULL)
{
rt_memcpy(new_ptr, ptr, oldsize < newsize ? oldsize : newsize);
rt_lwp_memheap_free(ptr);
}
return new_ptr;
}
/* don't split when there is less than one node space left */
if (newsize + RT_MEMHEAP_SIZE + RT_MEMHEAP_MINIALLOC >= oldsize)
return ptr;
/* lock memheap */
result = rt_sem_take(&(heap->lock), RT_WAITING_FOREVER);
if (result != RT_EOK)
{
rt_set_errno(result);
return RT_NULL;
}
/* split the block. */
new_ptr = (struct rt_lwp_memheap_item *)
(((rt_uint8_t *)header_ptr) + newsize + RT_MEMHEAP_SIZE);
RT_DEBUG_LOG(RT_DEBUG_MEMHEAP,
("split: block[0x%08x] nextm[0x%08x] prevm[0x%08x] to new[0x%08x]\n",
header_ptr,
header_ptr->next,
header_ptr->prev,
new_ptr));
/* mark the new block as a memory block and freed. */
new_ptr->magic = RT_MEMHEAP_MAGIC;
/* put the pool pointer into the new block. */
new_ptr->pool_ptr = heap;
/* break down the block list */
new_ptr->prev = header_ptr;
new_ptr->next = header_ptr->next;
header_ptr->next->prev = new_ptr;
header_ptr->next = new_ptr;
/* determine if the block can be merged with the next neighbor. */
if (!RT_MEMHEAP_IS_USED(new_ptr->next))
{
struct rt_lwp_memheap_item *free_ptr;
/* merge block with next neighbor. */
free_ptr = new_ptr->next;
heap->available_size = heap->available_size - MEMITEM_SIZE(free_ptr);
RT_DEBUG_LOG(RT_DEBUG_MEMHEAP,
("merge: right node 0x%08x, next_free 0x%08x, prev_free 0x%08x\n",
header_ptr, header_ptr->next_free, header_ptr->prev_free));
free_ptr->next->prev = new_ptr;
new_ptr->next = free_ptr->next;
/* remove free ptr from free list */
free_ptr->next_free->prev_free = free_ptr->prev_free;
free_ptr->prev_free->next_free = free_ptr->next_free;
}
/* insert the split block to free list */
new_ptr->next_free = heap->free_list->next_free;
new_ptr->prev_free = heap->free_list;
heap->free_list->next_free->prev_free = new_ptr;
heap->free_list->next_free = new_ptr;
RT_DEBUG_LOG(RT_DEBUG_MEMHEAP, ("new free ptr: next_free 0x%08x, prev_free 0x%08x\n",
new_ptr->next_free,
new_ptr->prev_free));
/* increment the available byte count. */
heap->available_size = heap->available_size + MEMITEM_SIZE(new_ptr);
/* release lock */
rt_sem_release(&(heap->lock));
/* return the old memory block */
return ptr;
}
void rt_lwp_memheap_free(void *ptr)
{
rt_err_t result;
struct rt_lwp_memheap *heap;
struct rt_lwp_memheap_item *header_ptr, *new_ptr;
rt_uint32_t insert_header;
/* NULL check */
if (ptr == RT_NULL) return;
/* set initial status as OK */
insert_header = 1;
new_ptr = RT_NULL;
header_ptr = (struct rt_lwp_memheap_item *)
((rt_uint8_t *)ptr - RT_MEMHEAP_SIZE);
RT_DEBUG_LOG(RT_DEBUG_MEMHEAP, ("free memory: memory[0x%08x], block[0x%08x]\n",
ptr, header_ptr));
/* check magic */
RT_ASSERT((header_ptr->magic & RT_MEMHEAP_MASK) == RT_MEMHEAP_MAGIC);
RT_ASSERT(header_ptr->magic & RT_MEMHEAP_USED);
/* check whether this block of memory has been over-written. */
RT_ASSERT((header_ptr->next->magic & RT_MEMHEAP_MASK) == RT_MEMHEAP_MAGIC);
/* get pool ptr */
heap = header_ptr->pool_ptr;
/* lock memheap */
result = rt_sem_take(&(heap->lock), RT_WAITING_FOREVER);
if (result != RT_EOK)
{
rt_set_errno(result);
return ;
}
/* Mark the memory as available. */
header_ptr->magic &= ~RT_MEMHEAP_USED;
/* Adjust the available number of bytes. */
heap->available_size = heap->available_size + MEMITEM_SIZE(header_ptr);
/* Determine if the block can be merged with the previous neighbor. */
if (!RT_MEMHEAP_IS_USED(header_ptr->prev))
{
RT_DEBUG_LOG(RT_DEBUG_MEMHEAP, ("merge: left node 0x%08x\n",
header_ptr->prev));
/* adjust the available number of bytes. */
heap->available_size = heap->available_size + RT_MEMHEAP_SIZE;
/* yes, merge block with previous neighbor. */
(header_ptr->prev)->next = header_ptr->next;
(header_ptr->next)->prev = header_ptr->prev;
/* move header pointer to previous. */
header_ptr = header_ptr->prev;
/* don't insert header to free list */
insert_header = 0;
}
/* determine if the block can be merged with the next neighbor. */
if (!RT_MEMHEAP_IS_USED(header_ptr->next))
{
/* adjust the available number of bytes. */
heap->available_size = heap->available_size + RT_MEMHEAP_SIZE;
/* merge block with next neighbor. */
new_ptr = header_ptr->next;
RT_DEBUG_LOG(RT_DEBUG_MEMHEAP,
("merge: right node 0x%08x, next_free 0x%08x, prev_free 0x%08x\n",
new_ptr, new_ptr->next_free, new_ptr->prev_free));
new_ptr->next->prev = header_ptr;
header_ptr->next = new_ptr->next;
/* remove new ptr from free list */
new_ptr->next_free->prev_free = new_ptr->prev_free;
new_ptr->prev_free->next_free = new_ptr->next_free;
}
if (insert_header)
{
/* no left merge, insert to free list */
header_ptr->next_free = heap->free_list->next_free;
header_ptr->prev_free = heap->free_list;
heap->free_list->next_free->prev_free = header_ptr;
heap->free_list->next_free = header_ptr;
RT_DEBUG_LOG(RT_DEBUG_MEMHEAP,
("insert to free list: next_free 0x%08x, prev_free 0x%08x\n",
header_ptr->next_free, header_ptr->prev_free));
}
/* release lock */
rt_sem_release(&(heap->lock));
}
rt_bool_t rt_lwp_memheap_is_empty(struct rt_lwp_memheap *memheap)
{
RT_ASSERT(memheap != RT_NULL);
return (memheap->available_size + 2 * sizeof(struct rt_lwp_memheap_item)) == memheap->pool_size;
}
rt_bool_t rt_lwp_memheap_unavailable_size_get(void)
{
return 2 * RT_MEMHEAP_SIZE + 3;
}

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/*
* File : lwp_memheap.h
* This file is part of RT-Thread RTOS
* COPYRIGHT (C) 2006 - 2018, RT-Thread Development Team
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License along
* with this program; if not, write to the Free Software Foundation, Inc.,
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
*
* Change Logs:
* Date Author Notes
*/
#ifndef __LWP_MEMHEAP_H__
#define __LWP_MEMHEAP_H__
#include <stdint.h>
#include <rtthread.h>
/**
* memory item on the heap
*/
struct rt_lwp_memheap_item
{
rt_uint32_t magic; /**< magic number for memheap */
struct rt_lwp_memheap *pool_ptr; /**< point of pool */
struct rt_lwp_memheap_item *next; /**< next memheap item */
struct rt_lwp_memheap_item *prev; /**< prev memheap item */
struct rt_lwp_memheap_item *next_free; /**< next free memheap item */
struct rt_lwp_memheap_item *prev_free; /**< prev free memheap item */
};
/**
* Base structure of memory heap object
*/
struct rt_lwp_memheap
{
struct rt_object parent; /**< inherit from rt_object */
void *start_addr; /**< pool start address and size */
rt_uint32_t pool_size; /**< pool size */
rt_uint32_t available_size; /**< available size */
rt_uint32_t max_used_size; /**< maximum allocated size */
struct rt_lwp_memheap_item *block_list; /**< used block list */
struct rt_lwp_memheap_item *free_list; /**< free block list */
struct rt_lwp_memheap_item free_header; /**< free block list header */
struct rt_semaphore lock; /**< semaphore lock */
rt_list_t mlist;
};
extern rt_err_t rt_lwp_memheap_init(struct rt_lwp_memheap *memheap, const char *name, void *start_addr, rt_uint32_t size);
extern void *rt_lwp_memheap_alloc(struct rt_lwp_memheap *heap, rt_uint32_t size);
extern void rt_lwp_memheap_free(void *ptr);
extern void *rt_lwp_memheap_realloc(struct rt_lwp_memheap *heap, void *ptr, rt_size_t newsize);
extern rt_bool_t rt_lwp_memheap_is_empty(struct rt_lwp_memheap *memheap);
extern rt_bool_t rt_lwp_memheap_unavailable_size_get(void);
#endif

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/*
* File : lwp_syscall.c
* This file is part of RT-Thread RTOS
* COPYRIGHT (C) 2006 - 2018, RT-Thread Development Team
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License along
* with this program; if not, write to the Free Software Foundation, Inc.,
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
*
* Change Logs:
* Date Author Notes
*/
/* RT-Thread System call */
#include <lwp.h>
#include <lwp_mem.h>
#include <lwp_syscall.h>
#include <dfs_poll.h>
#include <dfs_select.h>
#if (defined(RT_USING_SAL) && defined(SAL_USING_POSIX))
#include <sys/socket.h>
#define SYSCALL_NET(f) ((void*)(f))
#else
#define SYSCALL_NET(f) ((void*)sys_notimpl)
#endif
#define DBG_ENABLE
#define DBG_SECTION_NAME "LWP_CALL"
#define DBG_COLOR
#define DBG_LEVEL DBG_WARNING
#include <rtdbg.h>
static void __exit_files(rt_thread_t tid)
{
struct rt_lwp *lwp;
lwp = (struct rt_lwp *)tid->lwp;
while (lwp->fdt.maxfd > 0)
{
lwp->fdt.maxfd --;
close(lwp->fdt.maxfd);
}
}
/* thread/process */
void sys_exit(int value)
{
rt_thread_t tid;
/* TODO: handle the return_value */
dbg_log(DBG_LOG, "enter sys_exit\n");
tid = rt_thread_self();
__exit_files(tid);
rt_thread_delete(tid);
rt_schedule();
return;
}
/* syscall: "read" ret: "ssize_t" args: "int" "void *" "size_t" */
ssize_t sys_read(int fd, void *buf, size_t nbyte)
{
return read(fd, buf, nbyte);
}
/* syscall: "write" ret: "ssize_t" args: "int" "const void *" "size_t" */
ssize_t sys_write(int fd, const void *buf, size_t nbyte)
{
return write(fd, buf, nbyte);
}
/* syscall: "lseek" ret: "off_t" args: "int" "off_t" "int" */
off_t sys_lseek(int fd, off_t offset, int whence)
{
return lseek(fd, offset, whence);
}
/* syscall: "open" ret: "int" args: "const char *" "int" "..." */
int sys_open(const char *name, int mode, ...)
{
return open(name, mode, 0);
}
/* syscall: "close" ret: "int" args: "int" */
int sys_close(int fd)
{
return close(fd);
}
/* syscall: "ioctl" ret: "int" args: "int" "u_long" "..." */
int sys_ioctl(int fd, unsigned long cmd, void* data)
{
return ioctl(fd, cmd, data);
}
/* syscall: "nanosleep" ret: "int" args: "const struct timespec *" "struct timespec *" */
int sys_nanosleep(const struct timespec *rqtp, struct timespec *rmtp)
{
rt_tick_t tick;
dbg_log(DBG_LOG, "sys_nanosleep\n");
tick = rqtp->tv_sec * RT_TICK_PER_SECOND + (rqtp->tv_nsec * RT_TICK_PER_SECOND)/ 1000000000;
rt_thread_delay(tick);
if (rmtp)
{
tick = rt_tick_get() - tick;
/* get the passed time */
rmtp->tv_sec = tick/RT_TICK_PER_SECOND;
rmtp->tv_nsec = (tick%RT_TICK_PER_SECOND) * (1000000000/RT_TICK_PER_SECOND);
}
return 0;
}
/* syscall: "getpriority" ret: "int" args: "int" "id_t" */
int sys_getpriority(int which, id_t who)
{
if (which == PRIO_PROCESS)
{
rt_thread_t tid;
tid = rt_thread_self();
if (who == (id_t)tid || who == 0xff)
{
return tid->current_priority;
}
}
return 0xff;
}
/* syscall: "setpriority" ret: "int" args: "int" "id_t" "int" */
int sys_setpriority(int which, id_t who, int prio)
{
if (which == PRIO_PROCESS)
{
rt_thread_t tid;
tid = rt_thread_self();
if ((who == (id_t)tid || who == 0xff) && (prio >= 0 && prio < RT_THREAD_PRIORITY_MAX))
{
rt_thread_control(tid, RT_THREAD_CTRL_CHANGE_PRIORITY, &prio);
return 0;
}
}
return -1;
}
/* syscall: "gettimeofday" ret: "int" args: "struct timeval *" "struct timezone *" */
int sys_gettimeofday(struct timeval *tp, struct timezone *tzp)
{
if (tp)
{
tp->tv_sec = rt_tick_get() / RT_TICK_PER_SECOND;
tp->tv_usec = (rt_tick_get() % RT_TICK_PER_SECOND) * (1000000 / RT_TICK_PER_SECOND);
}
return 0;
}
/* syscall: "settimeofday" ret: "int" args: "const struct timeval *" "const struct timezone *" */
int sys_settimeofday(const struct timeval *tv, const struct timezone *tzp)
{
return 0;
}
/* syscall: "msgget" ret: "int" args: "key_t" "int" */
int sys_msgget(key_t key, int msgflg)
{
return -1;
}
/* syscall: "msgsnd" ret: "int" args: "int" "const void *" "size_t" "int" */
int sys_msgsend(int msqid, const void *msgp, size_t msgsz, int msgflg)
{
return -1;
}
/* syscall: "msgrcv" ret: "int" args: "int" "void *" "size_t" "long" "int" */
int sys_msgrcv(int msqid, void *msgp, size_t msgsz, long msgtyp, int msgflg)
{
return -1;
}
/* syscall: "sys_log" ret: "int" args: "const char*" "size" */
int sys_log(const char* log, int size)
{
rt_device_t console = rt_console_get_device();
if (console) rt_device_write(console, -1, log, size);
return 0;
}
void *sys_malloc(size_t size)
{
return rt_lwp_mem_malloc(size);
}
void sys_free(void *addr)
{
rt_lwp_mem_free(addr);
}
void *sys_realloc(void *rmem, size_t newsize)
{
return rt_lwp_mem_realloc(rmem, newsize);
}
int sys_fstat(int file, struct stat *buf)
{
return fstat(file, buf);
}
int sys_notimpl(void)
{
return -ENOSYS;
}
const static void* func_table[] =
{
(void *)sys_exit, // 0x01
(void *)sys_read, // 0x02
(void *)sys_write, // 0x03
(void *)sys_lseek, // 0x04
(void *)sys_open, // 0x05
(void *)sys_close, // 0x06
(void *)sys_ioctl, // 0x07
(void *)sys_nanosleep, // 0x08
(void *)sys_getpriority, // 0x09
(void *)sys_setpriority, // 0x0a
(void *)sys_gettimeofday, // 0x0b
(void *)sys_settimeofday, // 0x0c
(void *)sys_malloc, // 0x0d
(void *)sys_free, // 0x0e
(void *)sys_realloc, //0x0f
(void *)sys_fstat, // 0x10
(void *)poll, // 0x11
SYSCALL_NET(accept), // 0x12
SYSCALL_NET(bind), // 0x13
SYSCALL_NET(shutdown), // 0x14
SYSCALL_NET(getpeername),// 0x15
SYSCALL_NET(getsockname),// 0x16
SYSCALL_NET(getsockopt), // 0x17
SYSCALL_NET(setsockopt), // 0x18
SYSCALL_NET(connect), // 0x19
SYSCALL_NET(listen), // 0x1a
SYSCALL_NET(recv), // 0x1b
SYSCALL_NET(recvfrom), // 0x1c
SYSCALL_NET(send), // 0x1d
SYSCALL_NET(sendto), // 0x1e
SYSCALL_NET(socket), // 0x1f
(void *)select, // 0x20
};
const void *lwp_get_sys_api(rt_uint32_t number)
{
const void *func = (const void*)sys_notimpl;
if (number == 0xff)
{
func = (void *)sys_log;
}
else
{
number -= 1;
if (number < sizeof(func_table)/sizeof(func_table[0]))
{
func = func_table[number];
}
}
return func;
}

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/*
* File : lwp_syscall.h
* This file is part of RT-Thread RTOS
* COPYRIGHT (C) 2006 - 2018, RT-Thread Development Team
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License along
* with this program; if not, write to the Free Software Foundation, Inc.,
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
*
* Change Logs:
* Date Author Notes
* 2006-03-18 Bernard the first version
* 2006-04-25 Bernard add rt_hw_context_switch_interrupt declaration
* 2006-09-24 Bernard add rt_hw_context_switch_to declaration
* 2012-12-29 Bernard add rt_hw_exception_install declaration
* 2017-10-17 Hichard add some micros
*/
#ifndef __LWP_SYSCALL_H__
#define __LWP_SYSCALL_H__
#include <stdint.h>
#include <rtthread.h>
#include <dfs_posix.h>
#include <sys/time.h>
#include <sys/types.h>
typedef long suseconds_t; /* microseconds (signed) */
typedef uint32_t id_t; /* may contain pid, uid or gid */
/*
* Process priority specifications to get/setpriority.
*/
#define PRIO_MIN (-20)
#define PRIO_MAX 20
#define PRIO_PROCESS 0 /* only support lwp process */
#define PRIO_PGRP 1
#define PRIO_USER 2
#define TIMEVAL_TO_TIMESPEC(tv, ts) { \
(ts)->tv_sec = (tv)->tv_sec; \
(ts)->tv_nsec = (tv)->tv_usec * 1000; \
}
#define TIMESPEC_TO_TIMEVAL(tv, ts) { \
(tv)->tv_sec = (ts)->tv_sec; \
(tv)->tv_usec = (ts)->tv_nsec / 1000; \
}
void sys_exit(int value);
ssize_t sys_read(int fd, void *buf, size_t nbyte);
ssize_t sys_write(int fd, const void *buf, size_t nbyte);
off_t sys_lseek(int fd, off_t offset, int whence);
int sys_open(const char *name, int mode, ...);
int sys_close(int fd);
int sys_nanosleep(const struct timespec *rqtp, struct timespec *rmtp);
int sys_getpriority(int which, id_t who);
int sys_setpriority(int which, id_t who, int prio);
int sys_gettimeofday(struct timeval *tp, struct timezone *tzp);
int sys_settimeofday(const struct timeval *tv, const struct timezone *tzp);
int sys_msgget(key_t key, int msgflg);
int sys_msgsend(int msqid, const void *msgp, size_t msgsz, int msgflg);
int sys_msgrcv(int msqid, void *msgp, size_t msgsz, long msgtyp, int msgflg);
int sys_log(const char* log, int size);
#endif