winmacro.h
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- /* $Id: winmacro.h,v 1.22 2000/05/09 17:40:15 davem Exp $
- * winmacro.h: Window loading-unloading macros.
- *
- * Copyright (C) 1995 David S. Miller (davem@caip.rutgers.edu)
- */
- #ifndef _SPARC_WINMACRO_H
- #define _SPARC_WINMACRO_H
- #include <linux/config.h>
- #include <asm/ptrace.h>
- #include <asm/psr.h>
- /* These are just handy. */
- #define _SV save %sp, -REGWIN_SZ, %sp
- #define _RS restore
- #define FLUSH_ALL_KERNEL_WINDOWS
- _SV; _SV; _SV; _SV; _SV; _SV; _SV;
- _RS; _RS; _RS; _RS; _RS; _RS; _RS;
- /* Store the register window onto the 8-byte aligned area starting
- * at %reg. It might be %sp, it might not, we don't care.
- */
- #define STORE_WINDOW(reg)
- std %l0, [%reg + RW_L0];
- std %l2, [%reg + RW_L2];
- std %l4, [%reg + RW_L4];
- std %l6, [%reg + RW_L6];
- std %i0, [%reg + RW_I0];
- std %i2, [%reg + RW_I2];
- std %i4, [%reg + RW_I4];
- std %i6, [%reg + RW_I6];
- /* Load a register window from the area beginning at %reg. */
- #define LOAD_WINDOW(reg)
- ldd [%reg + RW_L0], %l0;
- ldd [%reg + RW_L2], %l2;
- ldd [%reg + RW_L4], %l4;
- ldd [%reg + RW_L6], %l6;
- ldd [%reg + RW_I0], %i0;
- ldd [%reg + RW_I2], %i2;
- ldd [%reg + RW_I4], %i4;
- ldd [%reg + RW_I6], %i6;
- /* Loading and storing struct pt_reg trap frames. */
- #define LOAD_PT_INS(base_reg)
- ldd [%base_reg + REGWIN_SZ + PT_I0], %i0;
- ldd [%base_reg + REGWIN_SZ + PT_I2], %i2;
- ldd [%base_reg + REGWIN_SZ + PT_I4], %i4;
- ldd [%base_reg + REGWIN_SZ + PT_I6], %i6;
- #define LOAD_PT_GLOBALS(base_reg)
- ld [%base_reg + REGWIN_SZ + PT_G1], %g1;
- ldd [%base_reg + REGWIN_SZ + PT_G2], %g2;
- ldd [%base_reg + REGWIN_SZ + PT_G4], %g4;
- ldd [%base_reg + REGWIN_SZ + PT_G6], %g6;
- #define LOAD_PT_YREG(base_reg, scratch)
- ld [%base_reg + REGWIN_SZ + PT_Y], %scratch;
- wr %scratch, 0x0, %y;
- #define LOAD_PT_PRIV(base_reg, pt_psr, pt_pc, pt_npc)
- ld [%base_reg + REGWIN_SZ + PT_PSR], %pt_psr;
- ld [%base_reg + REGWIN_SZ + PT_PC], %pt_pc;
- ld [%base_reg + REGWIN_SZ + PT_NPC], %pt_npc;
- #define LOAD_PT_ALL(base_reg, pt_psr, pt_pc, pt_npc, scratch)
- LOAD_PT_YREG(base_reg, scratch)
- LOAD_PT_INS(base_reg)
- LOAD_PT_GLOBALS(base_reg)
- LOAD_PT_PRIV(base_reg, pt_psr, pt_pc, pt_npc)
- #define STORE_PT_INS(base_reg)
- std %i0, [%base_reg + REGWIN_SZ + PT_I0];
- std %i2, [%base_reg + REGWIN_SZ + PT_I2];
- std %i4, [%base_reg + REGWIN_SZ + PT_I4];
- std %i6, [%base_reg + REGWIN_SZ + PT_I6];
- #define STORE_PT_GLOBALS(base_reg)
- st %g1, [%base_reg + REGWIN_SZ + PT_G1];
- std %g2, [%base_reg + REGWIN_SZ + PT_G2];
- std %g4, [%base_reg + REGWIN_SZ + PT_G4];
- std %g6, [%base_reg + REGWIN_SZ + PT_G6];
- #define STORE_PT_YREG(base_reg, scratch)
- rd %y, %scratch;
- st %scratch, [%base_reg + REGWIN_SZ + PT_Y];
- #define STORE_PT_PRIV(base_reg, pt_psr, pt_pc, pt_npc)
- st %pt_psr, [%base_reg + REGWIN_SZ + PT_PSR];
- st %pt_pc, [%base_reg + REGWIN_SZ + PT_PC];
- st %pt_npc, [%base_reg + REGWIN_SZ + PT_NPC];
- #define STORE_PT_ALL(base_reg, reg_psr, reg_pc, reg_npc, g_scratch)
- STORE_PT_PRIV(base_reg, reg_psr, reg_pc, reg_npc)
- STORE_PT_GLOBALS(base_reg)
- STORE_PT_YREG(base_reg, g_scratch)
- STORE_PT_INS(base_reg)
- #define SAVE_BOLIXED_USER_STACK(cur_reg, scratch)
- ld [%cur_reg + AOFF_task_thread + AOFF_thread_w_saved], %scratch;
- sll %scratch, 2, %scratch;
- add %scratch, %cur_reg, %scratch;
- st %sp, [%scratch + AOFF_task_thread + AOFF_thread_rwbuf_stkptrs];
- sub %scratch, %cur_reg, %scratch;
- sll %scratch, 4, %scratch;
- add %scratch, %cur_reg, %scratch;
- STORE_WINDOW(scratch + AOFF_task_thread + AOFF_thread_reg_window);
- sub %scratch, %cur_reg, %scratch;
- srl %scratch, 6, %scratch;
- add %scratch, 1, %scratch;
- st %scratch, [%cur_reg + AOFF_task_thread + AOFF_thread_w_saved];
- #ifdef CONFIG_SMP
- #define LOAD_CURRENT4M(dest_reg, idreg)
- rd %tbr, %idreg;
- sethi %hi(C_LABEL(current_set)), %dest_reg;
- srl %idreg, 10, %idreg;
- or %dest_reg, %lo(C_LABEL(current_set)), %dest_reg;
- and %idreg, 0xc, %idreg;
- ld [%idreg + %dest_reg], %dest_reg;
- /* Sliiick. We have a Linux current register :) -jj */
- #define LOAD_CURRENT4D(dest_reg)
- lda [%g0] ASI_M_VIKING_TMP2, %dest_reg;
- /* Blackbox - take care with this... - check smp4m and smp4d before changing this. */
- #define LOAD_CURRENT(dest_reg, idreg)
- sethi %hi(___b_load_current), %idreg;
- sethi %hi(C_LABEL(current_set)), %dest_reg;
- sethi %hi(C_LABEL(boot_cpu_id4)), %idreg;
- or %dest_reg, %lo(C_LABEL(current_set)), %dest_reg;
- ldub [%idreg + %lo(C_LABEL(boot_cpu_id4))], %idreg;
- ld [%idreg + %dest_reg], %dest_reg;
- #else
- #define LOAD_CURRENT(dest_reg, idreg)
- sethi %hi(C_LABEL(current_set)), %idreg;
- ld [%idreg + %lo(C_LABEL(current_set))], %dest_reg;
- #endif
- #endif /* !(_SPARC_WINMACRO_H) */