554 lines
14 KiB
C
554 lines
14 KiB
C
|
/* $NetBSD: asm.h,v 1.29 2000/12/14 21:29:51 jeffs Exp $ */
|
||
|
|
|
||
|
|
/*
|
||
|
|
* Copyright (c) 1992, 1993
|
||
|
|
* The Regents of the University of California. All rights reserved.
|
||
|
|
*
|
||
|
|
* This code is derived from software contributed to Berkeley by
|
||
|
|
* Ralph Campbell.
|
||
|
|
*
|
||
|
|
* Redistribution and use in source and binary forms, with or without
|
||
|
|
* modification, are permitted provided that the following conditions
|
||
|
|
* are met:
|
||
|
|
* 1. Redistributions of source code must retain the above copyright
|
||
|
|
* notice, this list of conditions and the following disclaimer.
|
||
|
|
* 2. Redistributions in binary form must reproduce the above copyright
|
||
|
|
* notice, this list of conditions and the following disclaimer in the
|
||
|
|
* documentation and/or other materials provided with the distribution.
|
||
|
|
* 4. Neither the name of the University nor the names of its contributors
|
||
|
|
* may be used to endorse or promote products derived from this software
|
||
|
|
* without specific prior written permission.
|
||
|
|
*
|
||
|
|
* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
|
||
|
|
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
|
||
|
|
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
|
||
|
|
* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
|
||
|
|
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
|
||
|
|
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
|
||
|
|
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
|
||
|
|
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
|
||
|
|
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
|
||
|
|
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
|
||
|
|
* SUCH DAMAGE.
|
||
|
|
*
|
||
|
|
* @(#)machAsmDefs.h 8.1 (Berkeley) 6/10/93
|
||
|
|
* JNPR: asm.h,v 1.10 2007/08/09 11:23:32 katta
|
||
|
|
* $FreeBSD$
|
||
|
|
*/
|
||
|
|
|
||
|
|
/*
|
||
|
|
* machAsmDefs.h --
|
||
|
|
*
|
||
|
|
* Macros used when writing assembler programs.
|
||
|
|
*
|
||
|
|
* Copyright (C) 1989 Digital Equipment Corporation.
|
||
|
|
* Permission to use, copy, modify, and distribute this software and
|
||
|
|
* its documentation for any purpose and without fee is hereby granted,
|
||
|
|
* provided that the above copyright notice appears in all copies.
|
||
|
|
* Digital Equipment Corporation makes no representations about the
|
||
|
|
* suitability of this software for any purpose. It is provided "as is"
|
||
|
|
* without express or implied warranty.
|
||
|
|
*
|
||
|
|
* from: Header: /sprite/src/kernel/mach/ds3100.md/RCS/machAsmDefs.h,
|
||
|
|
* v 1.2 89/08/15 18:28:24 rab Exp SPRITE (DECWRL)
|
||
|
|
*/
|
||
|
|
|
||
|
|
#ifndef _MACHINE_ASM_H_
|
||
|
|
#define _MACHINE_ASM_H_
|
||
|
|
|
||
|
|
#ifndef NO_REG_DEFS
|
||
|
|
#include <machine/regdef.h>
|
||
|
|
#endif
|
||
|
|
#include <machine/endian.h>
|
||
|
|
|
||
|
|
#undef __FBSDID
|
||
|
|
#if !defined(lint) && !defined(STRIP_FBSDID)
|
||
|
|
#define __FBSDID(s) .ident s
|
||
|
|
#else
|
||
|
|
#define __FBSDID(s) /* nothing */
|
||
|
|
#endif
|
||
|
|
|
||
|
|
/*
|
||
|
|
* Define -pg profile entry code.
|
||
|
|
* Must always be noreorder, must never use a macro instruction
|
||
|
|
* Final addiu to t9 must always equal the size of this _KERN_MCOUNT
|
||
|
|
*/
|
||
|
|
#define _KERN_MCOUNT \
|
||
|
|
.set push; \
|
||
|
|
.set noreorder; \
|
||
|
|
.set noat; \
|
||
|
|
subu sp,sp,16; \
|
||
|
|
sw t9,12(sp); \
|
||
|
|
move AT,ra; \
|
||
|
|
lui t9,%hi(_mcount); \
|
||
|
|
addiu t9,t9,%lo(_mcount); \
|
||
|
|
jalr t9; \
|
||
|
|
nop; \
|
||
|
|
lw t9,4(sp); \
|
||
|
|
addiu sp,sp,8; \
|
||
|
|
addiu t9,t9,40; \
|
||
|
|
.set pop;
|
||
|
|
|
||
|
|
#ifdef GPROF
|
||
|
|
#define MCOUNT _KERN_MCOUNT
|
||
|
|
#else
|
||
|
|
#define MCOUNT
|
||
|
|
#endif
|
||
|
|
|
||
|
|
#define _C_LABEL(x) x
|
||
|
|
|
||
|
|
/*
|
||
|
|
* Endian-independent assembly-code aliases for unaligned memory accesses.
|
||
|
|
*/
|
||
|
|
#if BYTE_ORDER == LITTLE_ENDIAN
|
||
|
|
#define LWLO lwl
|
||
|
|
#define LWHI lwr
|
||
|
|
#define SWLO swl
|
||
|
|
#define SWHI swr
|
||
|
|
#endif
|
||
|
|
|
||
|
|
#if BYTE_ORDER == BIG_ENDIAN
|
||
|
|
#define LWLO lwr
|
||
|
|
#define LWHI lwl
|
||
|
|
#define SWLO swr
|
||
|
|
#define SWHI swl
|
||
|
|
#endif
|
||
|
|
|
||
|
|
#ifdef USE_AENT
|
||
|
|
#define AENT(x) \
|
||
|
|
.aent x, 0
|
||
|
|
#else
|
||
|
|
#define AENT(x)
|
||
|
|
#endif
|
||
|
|
|
||
|
|
/*
|
||
|
|
* WARN_REFERENCES: create a warning if the specified symbol is referenced
|
||
|
|
*/
|
||
|
|
#define WARN_REFERENCES(_sym,_msg) \
|
||
|
|
.section .gnu.warning. ## _sym ; .ascii _msg ; .text
|
||
|
|
|
||
|
|
/*
|
||
|
|
* These are temp registers whose names can be used in either the old
|
||
|
|
* or new ABI, although they map to different physical registers. In
|
||
|
|
* the old ABI, they map to t4-t7, and in the new ABI, they map to a4-a7.
|
||
|
|
*
|
||
|
|
* Because they overlap with the last 4 arg regs in the new ABI, ta0-ta3
|
||
|
|
* should be used only when we need more than t0-t3.
|
||
|
|
*/
|
||
|
|
#if defined(__mips_n32) || defined(__mips_n64)
|
||
|
|
#define ta0 $8
|
||
|
|
#define ta1 $9
|
||
|
|
#define ta2 $10
|
||
|
|
#define ta3 $11
|
||
|
|
#else
|
||
|
|
#define ta0 $12
|
||
|
|
#define ta1 $13
|
||
|
|
#define ta2 $14
|
||
|
|
#define ta3 $15
|
||
|
|
#endif /* __mips_n32 || __mips_n64 */
|
||
|
|
|
||
|
|
#ifdef __ELF__
|
||
|
|
# define _C_LABEL(x) x
|
||
|
|
#else
|
||
|
|
# define _C_LABEL(x) _ ## x
|
||
|
|
#endif
|
||
|
|
|
||
|
|
/*
|
||
|
|
* WEAK_ALIAS: create a weak alias.
|
||
|
|
*/
|
||
|
|
#define WEAK_ALIAS(alias,sym) \
|
||
|
|
.weak alias; \
|
||
|
|
alias = sym
|
||
|
|
|
||
|
|
/*
|
||
|
|
* STRONG_ALIAS: create a strong alias.
|
||
|
|
*/
|
||
|
|
#define STRONG_ALIAS(alias,sym) \
|
||
|
|
.globl alias; \
|
||
|
|
alias = sym
|
||
|
|
|
||
|
|
#define GLOBAL(sym) \
|
||
|
|
.globl sym; sym:
|
||
|
|
|
||
|
|
#define ENTRY(sym) \
|
||
|
|
.text; .globl sym; .ent sym; sym:
|
||
|
|
|
||
|
|
#define ASM_ENTRY(sym) \
|
||
|
|
.text; .globl sym; .type sym,@function; sym:
|
||
|
|
|
||
|
|
/*
|
||
|
|
* LEAF
|
||
|
|
* A leaf routine does
|
||
|
|
* - call no other function,
|
||
|
|
* - never use any register that callee-saved (S0-S8), and
|
||
|
|
* - not use any local stack storage.
|
||
|
|
*/
|
||
|
|
#define LEAF(x) \
|
||
|
|
.globl _C_LABEL(x); \
|
||
|
|
.ent _C_LABEL(x), 0; \
|
||
|
|
_C_LABEL(x): ; \
|
||
|
|
.frame sp, 0, ra; \
|
||
|
|
MCOUNT
|
||
|
|
|
||
|
|
/*
|
||
|
|
* LEAF_NOPROFILE
|
||
|
|
* No profilable leaf routine.
|
||
|
|
*/
|
||
|
|
#define LEAF_NOPROFILE(x) \
|
||
|
|
.globl _C_LABEL(x); \
|
||
|
|
.ent _C_LABEL(x), 0; \
|
||
|
|
_C_LABEL(x): ; \
|
||
|
|
.frame sp, 0, ra
|
||
|
|
|
||
|
|
/*
|
||
|
|
* XLEAF
|
||
|
|
* declare alternate entry to leaf routine
|
||
|
|
*/
|
||
|
|
#define XLEAF(x) \
|
||
|
|
.globl _C_LABEL(x); \
|
||
|
|
AENT (_C_LABEL(x)); \
|
||
|
|
_C_LABEL(x):
|
||
|
|
|
||
|
|
/*
|
||
|
|
* NESTED
|
||
|
|
* A function calls other functions and needs
|
||
|
|
* therefore stack space to save/restore registers.
|
||
|
|
*/
|
||
|
|
#define NESTED(x, fsize, retpc) \
|
||
|
|
.globl _C_LABEL(x); \
|
||
|
|
.ent _C_LABEL(x), 0; \
|
||
|
|
_C_LABEL(x): ; \
|
||
|
|
.frame sp, fsize, retpc; \
|
||
|
|
MCOUNT
|
||
|
|
|
||
|
|
/*
|
||
|
|
* NESTED_NOPROFILE(x)
|
||
|
|
* No profilable nested routine.
|
||
|
|
*/
|
||
|
|
#define NESTED_NOPROFILE(x, fsize, retpc) \
|
||
|
|
.globl _C_LABEL(x); \
|
||
|
|
.ent _C_LABEL(x), 0; \
|
||
|
|
_C_LABEL(x): ; \
|
||
|
|
.frame sp, fsize, retpc
|
||
|
|
|
||
|
|
/*
|
||
|
|
* XNESTED
|
||
|
|
* declare alternate entry point to nested routine.
|
||
|
|
*/
|
||
|
|
#define XNESTED(x) \
|
||
|
|
.globl _C_LABEL(x); \
|
||
|
|
AENT (_C_LABEL(x)); \
|
||
|
|
_C_LABEL(x):
|
||
|
|
|
||
|
|
/*
|
||
|
|
* END
|
||
|
|
* Mark end of a procedure.
|
||
|
|
*/
|
||
|
|
#define END(x) \
|
||
|
|
.end _C_LABEL(x)
|
||
|
|
|
||
|
|
/*
|
||
|
|
* IMPORT -- import external symbol
|
||
|
|
*/
|
||
|
|
#define IMPORT(sym, size) \
|
||
|
|
.extern _C_LABEL(sym),size
|
||
|
|
|
||
|
|
/*
|
||
|
|
* EXPORT -- export definition of symbol
|
||
|
|
*/
|
||
|
|
#define EXPORT(x) \
|
||
|
|
.globl _C_LABEL(x); \
|
||
|
|
_C_LABEL(x):
|
||
|
|
|
||
|
|
/*
|
||
|
|
* VECTOR
|
||
|
|
* exception vector entrypoint
|
||
|
|
* XXX: regmask should be used to generate .mask
|
||
|
|
*/
|
||
|
|
#define VECTOR(x, regmask) \
|
||
|
|
.ent _C_LABEL(x),0; \
|
||
|
|
EXPORT(x); \
|
||
|
|
|
||
|
|
#define VECTOR_END(x) \
|
||
|
|
EXPORT(x ## End); \
|
||
|
|
END(x)
|
||
|
|
|
||
|
|
#define KSEG0TEXT_START
|
||
|
|
#define KSEG0TEXT_END
|
||
|
|
#define KSEG0TEXT .text
|
||
|
|
|
||
|
|
/*
|
||
|
|
* Macros to panic and printf from assembly language.
|
||
|
|
*/
|
||
|
|
#define PANIC(msg) \
|
||
|
|
la a0, 9f; \
|
||
|
|
jal _C_LABEL(panic); \
|
||
|
|
nop; \
|
||
|
|
MSG(msg)
|
||
|
|
|
||
|
|
#define PANIC_KSEG0(msg, reg) PANIC(msg)
|
||
|
|
|
||
|
|
#define PRINTF(msg) \
|
||
|
|
la a0, 9f; \
|
||
|
|
jal _C_LABEL(printf); \
|
||
|
|
nop; \
|
||
|
|
MSG(msg)
|
||
|
|
|
||
|
|
#define MSG(msg) \
|
||
|
|
.rdata; \
|
||
|
|
9: .asciiz msg; \
|
||
|
|
.text
|
||
|
|
|
||
|
|
#define ASMSTR(str) \
|
||
|
|
.asciiz str; \
|
||
|
|
.align 3
|
||
|
|
|
||
|
|
/*
|
||
|
|
* Call ast if required
|
||
|
|
*/
|
||
|
|
#define DO_AST \
|
||
|
|
44: \
|
||
|
|
la s0, _C_LABEL(disableintr) ;\
|
||
|
|
jalr s0 ;\
|
||
|
|
nop ;\
|
||
|
|
GET_CPU_PCPU(s1) ;\
|
||
|
|
lw s3, PC_CURPCB(s1) ;\
|
||
|
|
lw s1, PC_CURTHREAD(s1) ;\
|
||
|
|
lw s2, TD_FLAGS(s1) ;\
|
||
|
|
li s0, TDF_ASTPENDING | TDF_NEEDRESCHED;\
|
||
|
|
and s2, s0 ;\
|
||
|
|
la s0, _C_LABEL(enableintr) ;\
|
||
|
|
jalr s0 ;\
|
||
|
|
nop ;\
|
||
|
|
beq s2, zero, 4f ;\
|
||
|
|
nop ;\
|
||
|
|
la s0, _C_LABEL(ast) ;\
|
||
|
|
jalr s0 ;\
|
||
|
|
addu a0, s3, U_PCB_REGS ;\
|
||
|
|
j 44b ;\
|
||
|
|
nop ;\
|
||
|
|
4:
|
||
|
|
|
||
|
|
|
||
|
|
/*
|
||
|
|
* XXX retain dialects XXX
|
||
|
|
*/
|
||
|
|
#define ALEAF(x) XLEAF(x)
|
||
|
|
#define NLEAF(x) LEAF_NOPROFILE(x)
|
||
|
|
#define NON_LEAF(x, fsize, retpc) NESTED(x, fsize, retpc)
|
||
|
|
#define NNON_LEAF(x, fsize, retpc) NESTED_NOPROFILE(x, fsize, retpc)
|
||
|
|
|
||
|
|
/*
|
||
|
|
* standard callframe {
|
||
|
|
* register_t cf_args[4]; arg0 - arg3
|
||
|
|
* register_t cf_sp; frame pointer
|
||
|
|
* register_t cf_ra; return address
|
||
|
|
* };
|
||
|
|
*/
|
||
|
|
#define CALLFRAME_SIZ (4 * (4 + 2))
|
||
|
|
#define CALLFRAME_SP (4 * 4)
|
||
|
|
#define CALLFRAME_RA (4 * 5)
|
||
|
|
#define START_FRAME CALLFRAME_SIZ
|
||
|
|
|
||
|
|
/*
|
||
|
|
* While it would be nice to be compatible with the SGI
|
||
|
|
* REG_L and REG_S macros, because they do not take parameters, it
|
||
|
|
* is impossible to use them with the _MIPS_SIM_ABIX32 model.
|
||
|
|
*
|
||
|
|
* These macros hide the use of mips3 instructions from the
|
||
|
|
* assembler to prevent the assembler from generating 64-bit style
|
||
|
|
* ABI calls.
|
||
|
|
*/
|
||
|
|
|
||
|
|
#if !defined(_MIPS_BSD_API) || _MIPS_BSD_API == _MIPS_BSD_API_LP32
|
||
|
|
#define REG_L lw
|
||
|
|
#define REG_S sw
|
||
|
|
#define REG_LI li
|
||
|
|
#define REG_PROLOGUE .set push
|
||
|
|
#define REG_EPILOGUE .set pop
|
||
|
|
#define SZREG 4
|
||
|
|
#else
|
||
|
|
#define REG_L ld
|
||
|
|
#define REG_S sd
|
||
|
|
#define REG_LI dli
|
||
|
|
#define REG_PROLOGUE .set push ; .set mips3
|
||
|
|
#define REG_EPILOGUE .set pop
|
||
|
|
#define SZREG 8
|
||
|
|
#endif /* _MIPS_BSD_API */
|
||
|
|
|
||
|
|
#define mfc0_macro(data, spr) \
|
||
|
|
__asm __volatile ("mfc0 %0, $%1" \
|
||
|
|
: "=r" (data) /* outputs */ \
|
||
|
|
: "i" (spr)); /* inputs */
|
||
|
|
|
||
|
|
#define mtc0_macro(data, spr) \
|
||
|
|
__asm __volatile ("mtc0 %0, $%1" \
|
||
|
|
: /* outputs */ \
|
||
|
|
: "r" (data), "i" (spr)); /* inputs */
|
||
|
|
|
||
|
|
#define cfc0_macro(data, spr) \
|
||
|
|
__asm __volatile ("cfc0 %0, $%1" \
|
||
|
|
: "=r" (data) /* outputs */ \
|
||
|
|
: "i" (spr)); /* inputs */
|
||
|
|
|
||
|
|
#define ctc0_macro(data, spr) \
|
||
|
|
__asm __volatile ("ctc0 %0, $%1" \
|
||
|
|
: /* outputs */ \
|
||
|
|
: "r" (data), "i" (spr)); /* inputs */
|
||
|
|
|
||
|
|
|
||
|
|
#define lbu_macro(data, addr) \
|
||
|
|
__asm __volatile ("lbu %0, 0x0(%1)" \
|
||
|
|
: "=r" (data) /* outputs */ \
|
||
|
|
: "r" (addr)); /* inputs */
|
||
|
|
|
||
|
|
#define lb_macro(data, addr) \
|
||
|
|
__asm __volatile ("lb %0, 0x0(%1)" \
|
||
|
|
: "=r" (data) /* outputs */ \
|
||
|
|
: "r" (addr)); /* inputs */
|
||
|
|
|
||
|
|
#define lwl_macro(data, addr) \
|
||
|
|
__asm __volatile ("lwl %0, 0x0(%1)" \
|
||
|
|
: "=r" (data) /* outputs */ \
|
||
|
|
: "r" (addr)); /* inputs */
|
||
|
|
|
||
|
|
#define lwr_macro(data, addr) \
|
||
|
|
__asm __volatile ("lwr %0, 0x0(%1)" \
|
||
|
|
: "=r" (data) /* outputs */ \
|
||
|
|
: "r" (addr)); /* inputs */
|
||
|
|
|
||
|
|
#define ldl_macro(data, addr) \
|
||
|
|
__asm __volatile ("ldl %0, 0x0(%1)" \
|
||
|
|
: "=r" (data) /* outputs */ \
|
||
|
|
: "r" (addr)); /* inputs */
|
||
|
|
|
||
|
|
#define ldr_macro(data, addr) \
|
||
|
|
__asm __volatile ("ldr %0, 0x0(%1)" \
|
||
|
|
: "=r" (data) /* outputs */ \
|
||
|
|
: "r" (addr)); /* inputs */
|
||
|
|
|
||
|
|
#define sb_macro(data, addr) \
|
||
|
|
__asm __volatile ("sb %0, 0x0(%1)" \
|
||
|
|
: /* outputs */ \
|
||
|
|
: "r" (data), "r" (addr)); /* inputs */
|
||
|
|
|
||
|
|
#define swl_macro(data, addr) \
|
||
|
|
__asm __volatile ("swl %0, 0x0(%1)" \
|
||
|
|
: /* outputs */ \
|
||
|
|
: "r" (data), "r" (addr)); /* inputs */
|
||
|
|
|
||
|
|
#define swr_macro(data, addr) \
|
||
|
|
__asm __volatile ("swr %0, 0x0(%1)" \
|
||
|
|
: /* outputs */ \
|
||
|
|
: "r" (data), "r" (addr)); /* inputs */
|
||
|
|
|
||
|
|
#define sdl_macro(data, addr) \
|
||
|
|
__asm __volatile ("sdl %0, 0x0(%1)" \
|
||
|
|
: /* outputs */ \
|
||
|
|
: "r" (data), "r" (addr)); /* inputs */
|
||
|
|
|
||
|
|
#define sdr_macro(data, addr) \
|
||
|
|
__asm __volatile ("sdr %0, 0x0(%1)" \
|
||
|
|
: /* outputs */ \
|
||
|
|
: "r" (data), "r" (addr)); /* inputs */
|
||
|
|
|
||
|
|
#define mfgr_macro(data, gr) \
|
||
|
|
__asm __volatile ("move %0, $%1" \
|
||
|
|
: "=r" (data) /* outputs */ \
|
||
|
|
: "i" (gr)); /* inputs */
|
||
|
|
|
||
|
|
#define dmfc0_macro(data, spr) \
|
||
|
|
__asm __volatile ("dmfc0 %0, $%1" \
|
||
|
|
: "=r" (data) /* outputs */ \
|
||
|
|
: "i" (spr)); /* inputs */
|
||
|
|
|
||
|
|
#define dmtc0_macro(data, spr, sel) \
|
||
|
|
__asm __volatile ("dmtc0 %0, $%1, %2" \
|
||
|
|
: /* no outputs */ \
|
||
|
|
: "r" (data), "i" (spr), "i" (sel)); /* inputs */
|
||
|
|
|
||
|
|
/*
|
||
|
|
* The DYNAMIC_STATUS_MASK option adds an additional masking operation
|
||
|
|
* when updating the hardware interrupt mask in the status register.
|
||
|
|
*
|
||
|
|
* This is useful for platforms that need to at run-time mask
|
||
|
|
* interrupts based on motherboard configuration or to handle
|
||
|
|
* slowly clearing interrupts.
|
||
|
|
*
|
||
|
|
* XXX this is only currently implemented for mips3.
|
||
|
|
*/
|
||
|
|
#ifdef MIPS_DYNAMIC_STATUS_MASK
|
||
|
|
#define DYNAMIC_STATUS_MASK(sr,scratch) \
|
||
|
|
lw scratch, mips_dynamic_status_mask; \
|
||
|
|
and sr, sr, scratch
|
||
|
|
|
||
|
|
#define DYNAMIC_STATUS_MASK_TOUSER(sr,scratch1) \
|
||
|
|
ori sr, (MIPS_INT_MASK | MIPS_SR_INT_IE); \
|
||
|
|
DYNAMIC_STATUS_MASK(sr,scratch1)
|
||
|
|
#else
|
||
|
|
#define DYNAMIC_STATUS_MASK(sr,scratch)
|
||
|
|
#define DYNAMIC_STATUS_MASK_TOUSER(sr,scratch1)
|
||
|
|
#endif
|
||
|
|
|
||
|
|
#ifdef SMP
|
||
|
|
/*
|
||
|
|
* FREEBSD_DEVELOPERS_FIXME
|
||
|
|
* In multiprocessor case, store/retrieve the pcpu structure
|
||
|
|
* address for current CPU in scratch register for fast access.
|
||
|
|
*/
|
||
|
|
#error "Write GET_CPU_PCPU for SMP"
|
||
|
|
#else
|
||
|
|
#define GET_CPU_PCPU(reg) \
|
||
|
|
lw reg, _C_LABEL(pcpup);
|
||
|
|
#endif
|
||
|
|
|
||
|
|
/*
|
||
|
|
* Description of the setjmp buffer
|
||
|
|
*
|
||
|
|
* word 0 magic number (dependant on creator)
|
||
|
|
* 1 RA
|
||
|
|
* 2 S0
|
||
|
|
* 3 S1
|
||
|
|
* 4 S2
|
||
|
|
* 5 S3
|
||
|
|
* 6 S4
|
||
|
|
* 7 S5
|
||
|
|
* 8 S6
|
||
|
|
* 9 S7
|
||
|
|
* 10 SP
|
||
|
|
* 11 S8
|
||
|
|
* 12 signal mask (dependant on magic)
|
||
|
|
* 13 (con't)
|
||
|
|
* 14 (con't)
|
||
|
|
* 15 (con't)
|
||
|
|
*
|
||
|
|
* The magic number number identifies the jmp_buf and
|
||
|
|
* how the buffer was created as well as providing
|
||
|
|
* a sanity check
|
||
|
|
*
|
||
|
|
*/
|
||
|
|
|
||
|
|
#define _JB_MAGIC__SETJMP 0xBADFACED
|
||
|
|
#define _JB_MAGIC_SETJMP 0xFACEDBAD
|
||
|
|
|
||
|
|
/* Valid for all jmp_buf's */
|
||
|
|
|
||
|
|
#define _JB_MAGIC 0
|
||
|
|
#define _JB_REG_RA 1
|
||
|
|
#define _JB_REG_S0 2
|
||
|
|
#define _JB_REG_S1 3
|
||
|
|
#define _JB_REG_S2 4
|
||
|
|
#define _JB_REG_S3 5
|
||
|
|
#define _JB_REG_S4 6
|
||
|
|
#define _JB_REG_S5 7
|
||
|
|
#define _JB_REG_S6 8
|
||
|
|
#define _JB_REG_S7 9
|
||
|
|
#define _JB_REG_SP 10
|
||
|
|
#define _JB_REG_S8 11
|
||
|
|
|
||
|
|
/* Only valid with the _JB_MAGIC_SETJMP magic */
|
||
|
|
|
||
|
|
#define _JB_SIGMASK 12
|
||
|
|
|
||
|
|
#endif /* !_MACHINE_ASM_H_ */
|