1 /* architecture-dependent header for x86 */
2 #define LONGSZ 4 /* word size */
3 #define I_ARCH "__i386__"
5 #define N_REGS 8 /* number of registers */
6 #define N_ARGS 0 /* number of arg registers */
7 #define N_TMPS 6 /* number of tmp registers */
8 #define R_TMPS 0x00cf /* mask of tmp registers */
9 #define R_ARGS 0x0000 /* mask of arg registers */
10 #define R_SAVED 0x00c8 /* mask of callee-saved registers */
12 #define R_CALL 0x0001 /* mask of regs than can hold call dst */
13 #define R_BYTE 0x0007 /* mask of regs that can perform byte-wide instructions */
15 /* special registers */
16 #define REG_FP 5 /* frame pointer register */
17 #define REG_SP 4 /* stack pointer register */
18 #define REG_RET 0 /* returned value register */
19 #define REG_FORK 0 /* result of conditional branches */
