Linux Audio

Check our new training course

Embedded Linux Audio

Check our new training course
with Creative Commons CC-BY-SA
lecture materials

Bootlin logo

Elixir Cross Referencer

Open Menu /arch/sparc/include/asm/winmacro.h
Loading...
  1
  2
  3
  4
  5
  6
  7
  8
  9
 10
 11
 12
 13
 14
 15
 16
 17
 18
 19
 20
 21
 22
 23
 24
 25
 26
 27
 28
 29
 30
 31
 32
 33
 34
 35
 36
 37
 38
 39
 40
 41
 42
 43
 44
 45
 46
 47
 48
 49
 50
 51
 52
 53
 54
 55
 56
 57
 58
 59
 60
 61
 62
 63
 64
 65
 66
 67
 68
 69
 70
 71
 72
 73
 74
 75
 76
 77
 78
 79
 80
 81
 82
 83
 84
 85
 86
 87
 88
 89
 90
 91
 92
 93
 94
 95
 96
 97
 98
 99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
/*
 * 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 <asm/ptrace.h>

/* 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 + STACKFRAME_SZ + PT_I0], %i0; \
        ldd     [%base_reg + STACKFRAME_SZ + PT_I2], %i2; \
        ldd     [%base_reg + STACKFRAME_SZ + PT_I4], %i4; \
        ldd     [%base_reg + STACKFRAME_SZ + PT_I6], %i6;

#define LOAD_PT_GLOBALS(base_reg) \
        ld      [%base_reg + STACKFRAME_SZ + PT_G1], %g1; \
        ldd     [%base_reg + STACKFRAME_SZ + PT_G2], %g2; \
        ldd     [%base_reg + STACKFRAME_SZ + PT_G4], %g4; \
        ldd     [%base_reg + STACKFRAME_SZ + PT_G6], %g6;

#define LOAD_PT_YREG(base_reg, scratch) \
        ld      [%base_reg + STACKFRAME_SZ + PT_Y], %scratch; \
        wr      %scratch, 0x0, %y;

#define LOAD_PT_PRIV(base_reg, pt_psr, pt_pc, pt_npc) \
        ld      [%base_reg + STACKFRAME_SZ + PT_PSR], %pt_psr; \
        ld      [%base_reg + STACKFRAME_SZ + PT_PC], %pt_pc; \
        ld      [%base_reg + STACKFRAME_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 + STACKFRAME_SZ + PT_I0]; \
        std     %i2, [%base_reg + STACKFRAME_SZ + PT_I2]; \
        std     %i4, [%base_reg + STACKFRAME_SZ + PT_I4]; \
        std     %i6, [%base_reg + STACKFRAME_SZ + PT_I6];

#define STORE_PT_GLOBALS(base_reg) \
        st      %g1, [%base_reg + STACKFRAME_SZ + PT_G1]; \
        std     %g2, [%base_reg + STACKFRAME_SZ + PT_G2]; \
        std     %g4, [%base_reg + STACKFRAME_SZ + PT_G4]; \
        std     %g6, [%base_reg + STACKFRAME_SZ + PT_G6];

#define STORE_PT_YREG(base_reg, scratch) \
        rd      %y, %scratch; \
        st      %scratch, [%base_reg + STACKFRAME_SZ + PT_Y];

#define STORE_PT_PRIV(base_reg, pt_psr, pt_pc, pt_npc) \
        st      %pt_psr, [%base_reg + STACKFRAME_SZ + PT_PSR]; \
        st      %pt_pc,  [%base_reg + STACKFRAME_SZ + PT_PC]; \
        st      %pt_npc, [%base_reg + STACKFRAME_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 + TI_W_SAVED], %scratch; \
        sll      %scratch, 2, %scratch; \
        add      %scratch, %cur_reg, %scratch; \
        st       %sp, [%scratch + TI_RWIN_SPTRS]; \
        sub      %scratch, %cur_reg, %scratch; \
        sll      %scratch, 4, %scratch; \
        add      %scratch, %cur_reg, %scratch; \
        STORE_WINDOW(scratch + TI_REG_WINDOW); \
        sub      %scratch, %cur_reg, %scratch; \
        srl      %scratch, 6, %scratch; \
        add      %scratch, 1, %scratch; \
        st       %scratch, [%cur_reg + TI_W_SAVED];

#ifdef CONFIG_SMP
#define LOAD_CURRENT(dest_reg, idreg) 			\
661:	rd	%tbr, %idreg;				\
	srl	%idreg, 10, %idreg;			\
	and	%idreg, 0xc, %idreg;			\
	.section	.cpuid_patch, "ax";		\
	/* Instruction location. */			\
	.word		661b;				\
	/* SUN4D implementation. */			\
	lda	 [%g0] ASI_M_VIKING_TMP1, %idreg;	\
	sll	 %idreg, 2, %idreg;			\
	nop;						\
	/* LEON implementation. */			\
	rd 	%asr17, %idreg;				\
	srl	%idreg, 0x1c, %idreg;			\
	sll	%idreg, 0x02, %idreg;			\
	.previous;					\
	sethi    %hi(current_set), %dest_reg; 		\
	or       %dest_reg, %lo(current_set), %dest_reg;\
	ld       [%idreg + %dest_reg], %dest_reg;
#else
#define LOAD_CURRENT(dest_reg, idreg) \
        sethi    %hi(current_set), %idreg; \
        ld       [%idreg + %lo(current_set)], %dest_reg;
#endif

#endif /* !(_SPARC_WINMACRO_H) */