[3/8] MIPS: regdefs.h: Define a set of register numbers
Commit Message
Define a set of register numbers with their symbolic
names to help with uasm code.
All names are prefixed by GPR_ to prevent naming
clash.
Signed-off-by: Jiaxun Yang <jiaxun.yang@flygoat.com>
---
arch/mips/include/asm/regdef.h | 89 ++++++++++++++++++++++++++++++++++++++++++
1 file changed, 89 insertions(+)
@@ -14,6 +14,95 @@
#include <asm/sgidefs.h>
+#if _MIPS_SIM == _MIPS_SIM_ABI32
+
+/*
+ * General purpose register numbers for 32 bit ABI
+ */
+#define GPR_ZERO 0 /* wired zero */
+#define GPR_AT 1 /* assembler temp */
+#define GPR_V0 2 /* return value */
+#define GPR_V1 3
+#define GPR_A0 4 /* argument registers */
+#define GPR_A1 5
+#define GPR_A2 6
+#define GPR_A3 7
+#define GPR_T0 8 /* caller saved */
+#define GPR_T1 9
+#define GPR_T2 10
+#define GPR_T3 11
+#define GPR_T4 12
+#define GPR_TA0 12
+#define GPR_T5 13
+#define GPR_TA1 13
+#define GPR_T6 14
+#define GPR_TA2 14
+#define GPR_T7 15
+#define GPR_TA3 15
+#define GPR_S0 16 /* callee saved */
+#define GPR_S1 17
+#define GPR_S2 18
+#define GPR_S3 19
+#define GPR_S4 20
+#define GPR_S5 21
+#define GPR_S6 22
+#define GPR_S7 23
+#define GPR_T8 24 /* caller saved */
+#define GPR_T9 25
+#define GPR_JP 25 /* PIC jump register */
+#define GPR_K0 26 /* kernel scratch */
+#define GPR_K1 27
+#define GPR_GP 28 /* global pointer */
+#define GPR_SP 29 /* stack pointer */
+#define GPR_FP 30 /* frame pointer */
+#define GPR_S8 30 /* same like fp! */
+#define GPR_RA 31 /* return address */
+
+#endif /* _MIPS_SIM == _MIPS_SIM_ABI32 */
+
+#if _MIPS_SIM == _MIPS_SIM_ABI64 || _MIPS_SIM == _MIPS_SIM_NABI32
+
+#define GPR_ZERO 0 /* wired zero */
+#define GPR_AT 1 /* assembler temp */
+#define GPR_V0 2 /* return value - caller saved */
+#define GPR_V1 3
+#define GPR_A0 4 /* argument registers */
+#define GPR_A1 5
+#define GPR_A2 6
+#define GPR_A3 7
+#define GPR_A4 8 /* arg reg 64 bit; caller saved in 32 bit */
+#define GPR_TA0 8
+#define GPR_A5 9
+#define GPR_TA1 9
+#define GPR_A6 10
+#define GPR_TA2 10
+#define GPR_A7 11
+#define GPR_TA3 11
+#define GPR_T0 12 /* caller saved */
+#define GPR_T1 13
+#define GPR_T2 14
+#define GPR_T3 15
+#define GPR_S0 16 /* callee saved */
+#define GPR_S1 17
+#define GPR_S2 18
+#define GPR_S3 19
+#define GPR_S4 20
+#define GPR_S5 21
+#define GPR_S6 22
+#define GPR_S7 23
+#define GPR_T8 24 /* caller saved */
+#define GPR_T9 25 /* callee address for PIC/temp */
+#define GPR_JP 25 /* PIC jump register */
+#define GPR_K0 26 /* kernel temporary */
+#define GPR_K1 27
+#define GPR_GP 28 /* global pointer - caller saved for PIC */
+#define GPR_SP 29 /* stack pointer */
+#define GPR_FP 30 /* frame pointer */
+#define GPR_S8 30 /* callee saved */
+#define GPR_RA 31 /* return address */
+
+#endif /* _MIPS_SIM == _MIPS_SIM_ABI64 || _MIPS_SIM == _MIPS_SIM_NABI32 */
+
#ifdef __ASSEMBLY__
#if _MIPS_SIM == _MIPS_SIM_ABI32