/* * Assembly Macros For MIPS * * Copyright (c) 2006-2019, RT-Thread Development Team * * SPDX-License-Identifier: Apache-2.0 * * Change Logs: * Date Author Notes * 2019-12-04 Jiaxun Yang Initial version */ #ifndef __ASM_H__ #define __ASM_H__ #include /* * LEAF - declare leaf routine */ #define LEAF(symbol) \ .globl symbol; \ .align 2; \ .type symbol,@function; \ .ent symbol,0; \ symbol: .frame sp,0,ra /* * NESTED - declare nested routine entry point */ #define NESTED(symbol, framesize, rpc) \ .globl symbol; \ .align 2; \ .type symbol,@function; \ .ent symbol,0; \ symbol: .frame sp, framesize, rpc /* * END - mark end of function */ #define END(function) \ .end function; \ .size function,.-function /* * EXPORT - export definition of symbol */ #define EXPORT(symbol) \ .globl symbol; \ symbol: /* * FEXPORT - export definition of a function symbol */ #define FEXPORT(symbol) \ .globl symbol; \ .type symbol,@function; \ symbol: /* * Global data declaration with size. */ #define EXPORTS(name,sz) \ .globl name; \ .type name,@object; \ .size name,sz; \ name: /* * Weak data declaration with size. */ #define WEXPORT(name,sz) \ .weakext name; \ .type name,@object; \ .size name,sz; \ name: /* * Global data reference with size. */ #define IMPORT(name, size) \ .extern name,size /* * Global zeroed data. */ #define BSS(name,size) \ .type name,@object; \ .comm name,size /* * Local zeroed data. */ #define LBSS(name,size) \ .lcomm name,size /* * ABS - export absolute symbol */ #define ABS(symbol,value) \ .globl symbol; \ symbol = value #define TEXT(msg) \ .pushsection .data; \ 8: .asciiz msg; \ .popsection; #define ENTRY(name) \ .globl name; \ .align 2; \ .ent name,0; \ name##: /* * Macros to handle different pointer/register sizes for 32/64-bit code */ #if defined ARCH_MIPS64 /* * Size of a register */ #define SZREG 8 /* * Use the following macros in assemblercode to load/store registers, * pointers etc. */ #define REG_S sd #define REG_L ld #define REG_SUBU dsubu #define REG_ADDU daddu /* * How to add/sub/load/store/shift C int variables. */ #define INT_ADD dadd #define INT_ADDU daddu #define INT_ADDI daddi #define INT_ADDIU daddiu #define INT_SUB dsub #define INT_SUBU dsubu #define INT_L ld #define INT_S sd #define INT_SLL dsll #define INT_SLLV dsllv #define INT_SRL dsrl #define INT_SRLV dsrlv #define INT_SRA dsra #define INT_SRAV dsrav /* * Use the following macros in assemblercode to load/store registers, * pointers etc. */ #define LONG_ADD dadd #define LONG_ADDU daddu #define LONG_ADDI daddi #define LONG_ADDIU daddiu #define LONG_SUB dsub #define LONG_SUBU dsubu #define LONG_L ld #define LONG_S sd #define LONG_SP sdp #define LONG_SLL dsll #define LONG_SLLV dsllv #define LONG_SRL dsrl #define LONG_SRLV dsrlv #define LONG_SRA dsra #define LONG_SRAV dsrav #define LONG .dword #define LONGSIZE 8 #define LONGMASK 7 #define LONGLOG 3 /* * How to add/sub/load/store/shift pointers. */ #define PTR_ADD dadd #define PTR_ADDU daddu #define PTR_ADDI daddi #define PTR_ADDIU daddiu #define PTR_SUB dsub #define PTR_SUBU dsubu #define PTR_L ld #define PTR_S sd #define PTR_LA dla #define PTR_LI dli #define PTR_SLL dsll #define PTR_SLLV dsllv #define PTR_SRL dsrl #define PTR_SRLV dsrlv #define PTR_SRA dsra #define PTR_SRAV dsrav #define PTR_SCALESHIFT 3 #define PTR .dword #define PTRSIZE 8 #define PTRLOG 3 #define MFC0 dmfc0 #define MTC0 dmtc0 #else /* * Size of a register */ #define SZREG 4 /* * Use the following macros in assemblercode to load/store registers, * pointers etc. */ #define REG_S sw #define REG_L lw #define REG_SUBU subu #define REG_ADDU addu /* * How to add/sub/load/store/shift C int variables. */ #define INT_ADD add #define INT_ADDU addu #define INT_ADDI addi #define INT_ADDIU addiu #define INT_SUB sub #define INT_SUBU subu #define INT_L lw #define INT_S sw #define INT_SLL sll #define INT_SLLV sllv #define INT_SRL srl #define INT_SRLV srlv #define INT_SRA sra #define INT_SRAV srav /* * How to add/sub/load/store/shift C long variables. */ #define LONG_ADD add #define LONG_ADDU addu #define LONG_ADDI addi #define LONG_ADDIU addiu #define LONG_SUB sub #define LONG_SUBU subu #define LONG_L lw #define LONG_S sw #define LONG_SLL sll #define LONG_SLLV sllv #define LONG_SRL srl #define LONG_SRLV srlv #define LONG_SRA sra #define LONG_SRAV srav #define LONG .word #define LONGSIZE 4 #define LONGMASK 3 #define LONGLOG 2 /* * How to add/sub/load/store/shift pointers. */ #define PTR_ADD add #define PTR_ADDU addu #define PTR_ADDI addi #define PTR_ADDIU addiu #define PTR_SUB sub #define PTR_SUBU subu #define PTR_L lw #define PTR_S sw #define PTR_LA la #define PTR_SLL sll #define PTR_SLLV sllv #define PTR_SRL srl #define PTR_SRLV srlv #define PTR_SRA sra #define PTR_SRAV srav #define PTR_SCALESHIFT 2 #define PTR .word #define PTRSIZE 4 #define PTRLOG 2 /* * Some cp0 registers were extended to 64bit for MIPS III. */ #define MFC0 mfc0 #define MTC0 mtc0 #endif #define SSNOP sll zero, zero, 1 #endif /* end of __ASM_H__ */