cpu_user.h (484B)
1 #ifndef TARGET_RISCV_CPU_USER_H 2 #define TARGET_RISCV_CPU_USER_H 3 4 #define xRA 1 /* return address (aka link register) */ 5 #define xSP 2 /* stack pointer */ 6 #define xGP 3 /* global pointer */ 7 #define xTP 4 /* thread pointer */ 8 9 #define xA0 10 /* gpr[10-17] are syscall arguments */ 10 #define xA1 11 11 #define xA2 12 12 #define xA3 13 13 #define xA4 14 14 #define xA5 15 15 #define xA6 16 16 #define xA7 17 /* syscall number for RVI ABI */ 17 #define xT0 5 /* syscall number for RVE ABI */ 18 19 #endif