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update hdisr_gcc.S: push argument for ISR. 

git-svn-id: https://rt-thread.googlecode.com/svn/trunk@2341 bbd45198-f89e-11dd-88c7-29a3b14d5316
This commit is contained in:
wuyangyong 2012-10-10 16:39:49 +00:00
parent 66c2e88566
commit 0057604ad2
1 changed files with 17 additions and 11 deletions
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28
libcpu/ia32/hdisr_gcc.S
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@ -28,7 +28,7 @@
jmp _hdinterrupts;\ jmp _hdinterrupts;\
.data;\ .data;\
.long name;\ .long name;\
.text .text
.globl hdinterrupt_func .globl hdinterrupt_func
.data .data
@ -59,7 +59,7 @@ HDINTERRUPTFNC(irq15, 15)
.globl _hdinterrupts .globl _hdinterrupts
.type _hdinterrupts,@function .type _hdinterrupts,@function
.globl rt_interrupt_enter .globl rt_interrupt_enter
.globl rt_interrupt_leave .globl rt_interrupt_leave
.globl isr_table .globl isr_table
.globl rt_thread_switch_interrupt_flag .globl rt_thread_switch_interrupt_flag
.globl rt_interrupt_from_thread .globl rt_interrupt_from_thread
@ -73,14 +73,20 @@ _hdinterrupts:
movw %ax, %ds movw %ax, %ds
movw %ax, %es movw %ax, %es
pushl %esp pushl %esp
call rt_interrupt_enter call rt_interrupt_enter
movl %esp, %eax /* get irqno */
addl $0x2c, %eax movl %esp, %eax /* copy esp to eax */
movl (%eax), %eax /* each item takes up 4bytes in isr_table,equl to isr_table[irqno] */ addl $0x2c, %eax /* move to vector address */
shll $0x2, %eax movl (%eax), %eax /* vector(eax) = *eax */
movl $isr_table, %ebx
addl %eax,%ebx pushl %eax /* push argument : int vector */
shll $0x2, %eax /* each item takes up 4bytes in isr_table. */
movl $isr_table, %ebx /* ebx = &isr_table[0] */
addl %eax, %ebx /* eax = &isr_table[vector] */
call *(%ebx) call *(%ebx)
add $4, %esp /* restore argument */
call rt_interrupt_leave call rt_interrupt_leave
/* if rt_thread_switch_interrupt_flag set, jump to _interrupt_thread_switch and don't return */ /* if rt_thread_switch_interrupt_flag set, jump to _interrupt_thread_switch and don't return */
@ -88,7 +94,7 @@ _hdinterrupts:
movl (%eax), %ebx movl (%eax), %ebx
cmp $0x1, %ebx cmp $0x1, %ebx
jz _interrupt_thread_switch jz _interrupt_thread_switch
popl %esp popl %esp
popal popal
pop %es pop %es
@ -98,7 +104,7 @@ _hdinterrupts:
_interrupt_thread_switch: _interrupt_thread_switch:
popl %esp popl %esp
movl $0x0, %ebx movl $0x0, %ebx
movl %ebx, (%eax) movl %ebx, (%eax)
@ -109,7 +115,7 @@ _interrupt_thread_switch:
movl $rt_interrupt_to_thread, %ecx movl $rt_interrupt_to_thread, %ecx
movl (%ecx), %edx movl (%ecx), %edx
movl (%edx), %esp movl (%edx), %esp
popal popal
pop %es pop %es
pop %ds pop %ds