diff options
Diffstat (limited to 'include/asm-mips/stackframe.h')
| -rw-r--r-- | include/asm-mips/stackframe.h | 55 |
1 files changed, 49 insertions, 6 deletions
diff --git a/include/asm-mips/stackframe.h b/include/asm-mips/stackframe.h index 4b3a74043..68c8eabb6 100644 --- a/include/asm-mips/stackframe.h +++ b/include/asm-mips/stackframe.h @@ -3,7 +3,7 @@ * * Copyright (C) 1994, 1995, 1996 by Ralf Baechle and Paul M. Antoine. * - * $Id: stackframe.h,v 1.7 1998/05/04 09:13:01 ralf Exp $ + * $Id: stackframe.h,v 1.8 1999/05/01 10:08:19 harald Exp $ */ #ifndef __ASM_MIPS_STACKFRAME_H #define __ASM_MIPS_STACKFRAME_H @@ -102,9 +102,6 @@ #define RESTORE_AT \ lw $1, PT_R1(sp); \ -#define RESTORE_SP \ - lw sp, PT_R29(sp) - #define RESTORE_TEMP \ lw $24, PT_LO(sp); \ lw $8, PT_R8(sp); \ @@ -131,6 +128,44 @@ lw $23, PT_R23(sp); \ lw $30, PT_R30(sp) +#if (_MIPS_ISA == _MIPS_ISA_MIPS1) + +#define RESTORE_SOME \ + .set push; \ + .set reorder; \ + mfc0 t0, CP0_STATUS; \ + .set pop; \ + ori t0, 0x1f; \ + xori t0, 0x1f; \ + mtc0 t0, CP0_STATUS; \ + li v1, 0xff00; \ + and t0, v1; \ + lw v0, PT_STATUS(sp); \ + nor v1, $0, v1; \ + and v0, v1; \ + or v0, t0; \ + mtc0 v0, CP0_STATUS; \ + lw $31, PT_R31(sp); \ + lw $28, PT_R28(sp); \ + lw $25, PT_R25(sp); \ + lw $7, PT_R7(sp); \ + lw $6, PT_R6(sp); \ + lw $5, PT_R5(sp); \ + lw $4, PT_R4(sp); \ + lw $3, PT_R3(sp); \ + lw $2, PT_R2(sp) + +#define RESTORE_SP_AND_RET \ + .set push; \ + .set noreorder; \ + lw k0, PT_EPC(sp); \ + lw sp, PT_R29(sp); \ + jr k0; \ + rfe; \ + .set pop + +#else + #define RESTORE_SOME \ .set push; \ .set reorder; \ @@ -158,12 +193,20 @@ lw $3, PT_R3(sp); \ lw $2, PT_R2(sp) -#define RESTORE_ALL \ +#define RESTORE_SP_AND_RET \ + lw sp, PT_R29(sp); \ + .set mips3; \ + eret; \ + .set mips0 + +#endif + +#define RESTORE_ALL_AND_RET \ RESTORE_SOME; \ RESTORE_AT; \ RESTORE_TEMP; \ RESTORE_STATIC; \ - RESTORE_SP + RESTORE_SP_AND_RET /* * Move to kernel mode and disable interrupts. |