/*
* This file is subject to the terms and conditions of the GNU General Public
* License. See the file "COPYING" in the main directory of this archive
* for more details.
*
* Copyright (C) 1996, 1998 by Ralf Baechle
*
* Multi-arch abstraction and asm macros for easier reading:
* Copyright (C) 1996 David S. Miller (davem@davemloft.net)
*
* Further modifications to make this work:
* Copyright (c) 1998 Harald Koerfgen
*/
#include <asm/asm.h>
#include <asm/errno.h>
#include <asm/fpregdef.h>
#include <asm/mipsregs.h>
#include <asm/asm-offsets.h>
#include <asm/regdef.h>
#define EX(a,b) \
9: a,##b; \
.section __ex_table,"a"; \
PTR 9b,fault; \
.previous
.set noreorder
.set mips1
/**
* _save_fp_context() - save FP context from the FPU
* @a0 - pointer to fpregs field of sigcontext
* @a1 - pointer to fpc_csr field of sigcontext
*
* Save FP context, including the 32 FP data registers and the FP
* control & status register, from the FPU to signal context.
*/
LEAF(_save_fp_context)
.set push
SET_HARDFLOAT
li v0, 0 # assume success
cfc1 t1, fcr31
EX(swc1 $f0, 0(a0))
EX(swc1 $f1, 8(a0))
EX(swc1 $f2, 16(a0))
EX(swc1 $f3, 24(a0))
EX(swc1 $f4, 32(a0))
EX(swc1 $f5, 40(a0))
EX(swc1 $f6, 48(a0))
EX(swc1 $f7, 56(a0))
EX(swc1 $f8, 64(a0))
EX(swc1 $f9, 72(a0))
EX(swc1 $f10, 80(a0))
EX(swc1 $f11, 88(a0))
EX(swc1 $f12, 96(a0))
EX(swc1 $f13, 104(a0))
EX(swc1 $f14, 112(a0))
EX(swc1 $f15, 120(a0))
EX(swc1 $f16, 128(a0))
EX(swc1 $f17, 136(a0))
EX(swc1 $f18, 144(a0))
EX(swc1 $f19, 152(a0))
EX(swc1 $f20, 160(a0))
EX(swc1 $f21, 168(a0))
EX(swc1 $f22, 176(a0))
EX(swc1 $f23, 184(a0))
EX(swc1 $f24, 192(a0))
EX(swc1 $f25, 200(a0))
EX(swc1 $f26, 208(a0))
EX(swc1 $f27, 216(a0))
EX(swc1 $f28, 224(a0))
EX(swc1 $f29, 232(a0))
EX(swc1 $f30, 240(a0))
EX(swc1 $f31, 248(a0))
jr ra
EX(sw t1, (a1))
.set pop
END(_save_fp_context)
/**
* _restore_fp_context() - restore FP context to the FPU
* @a0 - pointer to fpregs field of sigcontext
* @a1 - pointer to fpc_csr field of sigcontext
*
* Restore FP context, including the 32 FP data registers and the FP
* control & status register, from signal context to the FPU.
*/
LEAF(_restore_fp_context)
.set push
SET_HARDFLOAT
li v0, 0 # assume success
EX(lw t0, (a1))
EX(lwc1 $f0, 0(a0))
EX(lwc1 $f1, 8(a0))
EX(lwc1 $f2, 16(a0))
EX(lwc1 $f3, 24(a0))
EX(lwc1 $f4, 32(a0))
EX(lwc1 $f5, 40(a0))
EX(lwc1 $f6, 48(a0))
EX(lwc1 $f7, 56(a0))
EX(lwc1 $f8, 64(a0))
EX(lwc1 $f9, 72(a0))
EX(lwc1 $f10, 80(a0))
EX(lwc1 $f11, 88(a0))
EX(lwc1 $f12, 96(a0))
EX(lwc1 $f13, 104(a0))
EX(lwc1 $f14, 112(a0))
EX(lwc1 $f15, 120(a0))
EX(lwc1 $f16, 128(a0))
EX(lwc1 $f17, 136(a0))
EX(lwc1 $f18, 144(a0))
EX(lwc1 $f19, 152(a0))
EX(lwc1 $f20, 160(a0))
EX(lwc1 $f21, 168(a0))
EX(lwc1 $f22, 176(a0))
EX(lwc1 $f23, 184(a0))
EX(lwc1 $f24, 192(a0))
EX(lwc1 $f25, 200(a0))
EX(lwc1 $f26, 208(a0))
EX(lwc1 $f27, 216(a0))
EX(lwc1 $f28, 224(a0))
EX(lwc1 $f29, 232(a0))
EX(lwc1 $f30, 240(a0))
EX(lwc1 $f31, 248(a0))
jr ra
ctc1 t0, fcr31
.set pop
END(_restore_fp_context)
.set reorder
.type fault, @function
.ent fault
fault: li v0, -EFAULT
jr ra
.end fault
