| Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1 | /* $Id: winmacro.h,v 1.22 2000/05/09 17:40:15 davem Exp $ |
| 2 | * winmacro.h: Window loading-unloading macros. |
| 3 | * |
| 4 | * Copyright (C) 1995 David S. Miller (davem@caip.rutgers.edu) |
| 5 | */ |
| 6 | |
| 7 | #ifndef _SPARC_WINMACRO_H |
| 8 | #define _SPARC_WINMACRO_H |
| 9 | |
| 10 | #include <linux/config.h> |
| 11 | #include <asm/ptrace.h> |
| 12 | |
| 13 | /* Store the register window onto the 8-byte aligned area starting |
| 14 | * at %reg. It might be %sp, it might not, we don't care. |
| 15 | */ |
| 16 | #define STORE_WINDOW(reg) \ |
| 17 | std %l0, [%reg + RW_L0]; \ |
| 18 | std %l2, [%reg + RW_L2]; \ |
| 19 | std %l4, [%reg + RW_L4]; \ |
| 20 | std %l6, [%reg + RW_L6]; \ |
| 21 | std %i0, [%reg + RW_I0]; \ |
| 22 | std %i2, [%reg + RW_I2]; \ |
| 23 | std %i4, [%reg + RW_I4]; \ |
| 24 | std %i6, [%reg + RW_I6]; |
| 25 | |
| 26 | /* Load a register window from the area beginning at %reg. */ |
| 27 | #define LOAD_WINDOW(reg) \ |
| 28 | ldd [%reg + RW_L0], %l0; \ |
| 29 | ldd [%reg + RW_L2], %l2; \ |
| 30 | ldd [%reg + RW_L4], %l4; \ |
| 31 | ldd [%reg + RW_L6], %l6; \ |
| 32 | ldd [%reg + RW_I0], %i0; \ |
| 33 | ldd [%reg + RW_I2], %i2; \ |
| 34 | ldd [%reg + RW_I4], %i4; \ |
| 35 | ldd [%reg + RW_I6], %i6; |
| 36 | |
| 37 | /* Loading and storing struct pt_reg trap frames. */ |
| 38 | #define LOAD_PT_INS(base_reg) \ |
| 39 | ldd [%base_reg + STACKFRAME_SZ + PT_I0], %i0; \ |
| 40 | ldd [%base_reg + STACKFRAME_SZ + PT_I2], %i2; \ |
| 41 | ldd [%base_reg + STACKFRAME_SZ + PT_I4], %i4; \ |
| 42 | ldd [%base_reg + STACKFRAME_SZ + PT_I6], %i6; |
| 43 | |
| 44 | #define LOAD_PT_GLOBALS(base_reg) \ |
| 45 | ld [%base_reg + STACKFRAME_SZ + PT_G1], %g1; \ |
| 46 | ldd [%base_reg + STACKFRAME_SZ + PT_G2], %g2; \ |
| 47 | ldd [%base_reg + STACKFRAME_SZ + PT_G4], %g4; \ |
| 48 | ldd [%base_reg + STACKFRAME_SZ + PT_G6], %g6; |
| 49 | |
| 50 | #define LOAD_PT_YREG(base_reg, scratch) \ |
| 51 | ld [%base_reg + STACKFRAME_SZ + PT_Y], %scratch; \ |
| 52 | wr %scratch, 0x0, %y; |
| 53 | |
| 54 | #define LOAD_PT_PRIV(base_reg, pt_psr, pt_pc, pt_npc) \ |
| 55 | ld [%base_reg + STACKFRAME_SZ + PT_PSR], %pt_psr; \ |
| 56 | ld [%base_reg + STACKFRAME_SZ + PT_PC], %pt_pc; \ |
| 57 | ld [%base_reg + STACKFRAME_SZ + PT_NPC], %pt_npc; |
| 58 | |
| 59 | #define LOAD_PT_ALL(base_reg, pt_psr, pt_pc, pt_npc, scratch) \ |
| 60 | LOAD_PT_YREG(base_reg, scratch) \ |
| 61 | LOAD_PT_INS(base_reg) \ |
| 62 | LOAD_PT_GLOBALS(base_reg) \ |
| 63 | LOAD_PT_PRIV(base_reg, pt_psr, pt_pc, pt_npc) |
| 64 | |
| 65 | #define STORE_PT_INS(base_reg) \ |
| 66 | std %i0, [%base_reg + STACKFRAME_SZ + PT_I0]; \ |
| 67 | std %i2, [%base_reg + STACKFRAME_SZ + PT_I2]; \ |
| 68 | std %i4, [%base_reg + STACKFRAME_SZ + PT_I4]; \ |
| 69 | std %i6, [%base_reg + STACKFRAME_SZ + PT_I6]; |
| 70 | |
| 71 | #define STORE_PT_GLOBALS(base_reg) \ |
| 72 | st %g1, [%base_reg + STACKFRAME_SZ + PT_G1]; \ |
| 73 | std %g2, [%base_reg + STACKFRAME_SZ + PT_G2]; \ |
| 74 | std %g4, [%base_reg + STACKFRAME_SZ + PT_G4]; \ |
| 75 | std %g6, [%base_reg + STACKFRAME_SZ + PT_G6]; |
| 76 | |
| 77 | #define STORE_PT_YREG(base_reg, scratch) \ |
| 78 | rd %y, %scratch; \ |
| 79 | st %scratch, [%base_reg + STACKFRAME_SZ + PT_Y]; |
| 80 | |
| 81 | #define STORE_PT_PRIV(base_reg, pt_psr, pt_pc, pt_npc) \ |
| 82 | st %pt_psr, [%base_reg + STACKFRAME_SZ + PT_PSR]; \ |
| 83 | st %pt_pc, [%base_reg + STACKFRAME_SZ + PT_PC]; \ |
| 84 | st %pt_npc, [%base_reg + STACKFRAME_SZ + PT_NPC]; |
| 85 | |
| 86 | #define STORE_PT_ALL(base_reg, reg_psr, reg_pc, reg_npc, g_scratch) \ |
| 87 | STORE_PT_PRIV(base_reg, reg_psr, reg_pc, reg_npc) \ |
| 88 | STORE_PT_GLOBALS(base_reg) \ |
| 89 | STORE_PT_YREG(base_reg, g_scratch) \ |
| 90 | STORE_PT_INS(base_reg) |
| 91 | |
| 92 | #define SAVE_BOLIXED_USER_STACK(cur_reg, scratch) \ |
| 93 | ld [%cur_reg + TI_W_SAVED], %scratch; \ |
| 94 | sll %scratch, 2, %scratch; \ |
| 95 | add %scratch, %cur_reg, %scratch; \ |
| 96 | st %sp, [%scratch + TI_RWIN_SPTRS]; \ |
| 97 | sub %scratch, %cur_reg, %scratch; \ |
| 98 | sll %scratch, 4, %scratch; \ |
| 99 | add %scratch, %cur_reg, %scratch; \ |
| 100 | STORE_WINDOW(scratch + TI_REG_WINDOW); \ |
| 101 | sub %scratch, %cur_reg, %scratch; \ |
| 102 | srl %scratch, 6, %scratch; \ |
| 103 | add %scratch, 1, %scratch; \ |
| 104 | st %scratch, [%cur_reg + TI_W_SAVED]; |
| 105 | |
| 106 | #ifdef CONFIG_SMP |
| 107 | #define LOAD_CURRENT4M(dest_reg, idreg) \ |
| 108 | rd %tbr, %idreg; \ |
| 109 | sethi %hi(current_set), %dest_reg; \ |
| 110 | srl %idreg, 10, %idreg; \ |
| 111 | or %dest_reg, %lo(current_set), %dest_reg; \ |
| 112 | and %idreg, 0xc, %idreg; \ |
| 113 | ld [%idreg + %dest_reg], %dest_reg; |
| 114 | |
| 115 | #define LOAD_CURRENT4D(dest_reg, idreg) \ |
| 116 | lda [%g0] ASI_M_VIKING_TMP1, %idreg; \ |
| 117 | sethi %hi(C_LABEL(current_set)), %dest_reg; \ |
| 118 | sll %idreg, 2, %idreg; \ |
| 119 | or %dest_reg, %lo(C_LABEL(current_set)), %dest_reg; \ |
| 120 | ld [%idreg + %dest_reg], %dest_reg; |
| 121 | |
| 122 | /* Blackbox - take care with this... - check smp4m and smp4d before changing this. */ |
| 123 | #define LOAD_CURRENT(dest_reg, idreg) \ |
| 124 | sethi %hi(___b_load_current), %idreg; \ |
| 125 | sethi %hi(current_set), %dest_reg; \ |
| 126 | sethi %hi(boot_cpu_id4), %idreg; \ |
| 127 | or %dest_reg, %lo(current_set), %dest_reg; \ |
| 128 | ldub [%idreg + %lo(boot_cpu_id4)], %idreg; \ |
| 129 | ld [%idreg + %dest_reg], %dest_reg; |
| 130 | #else |
| 131 | #define LOAD_CURRENT(dest_reg, idreg) \ |
| 132 | sethi %hi(current_set), %idreg; \ |
| 133 | ld [%idreg + %lo(current_set)], %dest_reg; |
| 134 | #endif |
| 135 | |
| 136 | #endif /* !(_SPARC_WINMACRO_H) */ |