| /* |
| * arch/mips/include/machine/asm.h |
| */ |
| |
| #ifndef _MACHINE_ASM_H |
| #define _MACHINE_ASM_H |
| |
| /* |
| * Symbolic register names for 32 bit ABI |
| */ |
| |
| #define zero $0 /* wired zero */ |
| #define AT $1 /* assembler temp - uppercase because of ".set at" */ |
| #define v0 $2 /* return value */ |
| #define v1 $3 |
| #define a0 $4 /* argument registers */ |
| #define a1 $5 |
| #define a2 $6 |
| #define a3 $7 |
| #define t0 $8 /* caller saved */ |
| #define t1 $9 |
| #define t2 $10 |
| #define t3 $11 |
| #define t4 $12 |
| #define t5 $13 |
| #define t6 $14 |
| #define t7 $15 |
| #define s0 $16 /* callee saved */ |
| #define s1 $17 |
| #define s2 $18 |
| #define s3 $19 |
| #define s4 $20 |
| #define s5 $21 |
| #define s6 $22 |
| #define s7 $23 |
| #define t8 $24 /* caller saved */ |
| #define t9 $25 |
| #define jp $25 /* PIC jump register */ |
| #define k0 $26 /* kernel scratch */ |
| #define k1 $27 |
| #define gp $28 /* global pointer */ |
| #define sp $29 /* stack pointer */ |
| #define fp $30 /* frame pointer */ |
| #define s8 $30 /* same like fp! */ |
| #define ra $31 /* return address */ |
| |
| /* |
| * 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 |
| |
| |
| #endif /* _MACHINE_ASM_H */ |
