| /* |
| * 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, 98, 99, 2000, 01 Ralf Baechle |
| * |
| * Multi-arch abstraction and asm macros for easier reading: |
| * Copyright (C) 1996 David S. Miller (dm@engr.sgi.com) |
| * |
| * Carsten Langgaard, carstenl@mips.com |
| * Copyright (C) 2000 MIPS Technologies, Inc. |
| * Copyright (C) 1999, 2001 Silicon Graphics, Inc. |
| */ |
| #include <linux/config.h> |
| #include <asm/asm.h> |
| #include <asm/errno.h> |
| #include <asm/fpregdef.h> |
| #include <asm/mipsregs.h> |
| #include <asm/offset.h> |
| #include <asm/regdef.h> |
| |
| .macro EX insn, reg, src |
| .set push |
| .set nomacro |
| .ex\@: \insn \reg, \src |
| .set pop |
| .section __ex_table,"a" |
| PTR .ex\@, fault |
| .previous |
| .endm |
| |
| .set noreorder |
| .set mips3 |
| /* Save floating point context */ |
| LEAF(_save_fp_context) |
| cfc1 t1, fcr31 |
| |
| #ifdef CONFIG_64BIT |
| /* Store the 16 odd double precision registers */ |
| EX sdc1 $f1, SC_FPREGS+8(a0) |
| EX sdc1 $f3, SC_FPREGS+24(a0) |
| EX sdc1 $f5, SC_FPREGS+40(a0) |
| EX sdc1 $f7, SC_FPREGS+56(a0) |
| EX sdc1 $f9, SC_FPREGS+72(a0) |
| EX sdc1 $f11, SC_FPREGS+88(a0) |
| EX sdc1 $f13, SC_FPREGS+104(a0) |
| EX sdc1 $f15, SC_FPREGS+120(a0) |
| EX sdc1 $f17, SC_FPREGS+136(a0) |
| EX sdc1 $f19, SC_FPREGS+152(a0) |
| EX sdc1 $f21, SC_FPREGS+168(a0) |
| EX sdc1 $f23, SC_FPREGS+184(a0) |
| EX sdc1 $f25, SC_FPREGS+200(a0) |
| EX sdc1 $f27, SC_FPREGS+216(a0) |
| EX sdc1 $f29, SC_FPREGS+232(a0) |
| EX sdc1 $f31, SC_FPREGS+248(a0) |
| #endif |
| |
| /* Store the 16 even double precision registers */ |
| EX sdc1 $f0, SC_FPREGS+0(a0) |
| EX sdc1 $f2, SC_FPREGS+16(a0) |
| EX sdc1 $f4, SC_FPREGS+32(a0) |
| EX sdc1 $f6, SC_FPREGS+48(a0) |
| EX sdc1 $f8, SC_FPREGS+64(a0) |
| EX sdc1 $f10, SC_FPREGS+80(a0) |
| EX sdc1 $f12, SC_FPREGS+96(a0) |
| EX sdc1 $f14, SC_FPREGS+112(a0) |
| EX sdc1 $f16, SC_FPREGS+128(a0) |
| EX sdc1 $f18, SC_FPREGS+144(a0) |
| EX sdc1 $f20, SC_FPREGS+160(a0) |
| EX sdc1 $f22, SC_FPREGS+176(a0) |
| EX sdc1 $f24, SC_FPREGS+192(a0) |
| EX sdc1 $f26, SC_FPREGS+208(a0) |
| EX sdc1 $f28, SC_FPREGS+224(a0) |
| EX sdc1 $f30, SC_FPREGS+240(a0) |
| EX sw t1, SC_FPC_CSR(a0) |
| cfc1 t0, $0 # implementation/version |
| EX sw t0, SC_FPC_EIR(a0) |
| |
| jr ra |
| li v0, 0 # success |
| END(_save_fp_context) |
| |
| #ifdef CONFIG_MIPS32_COMPAT |
| /* Save 32-bit process floating point context */ |
| LEAF(_save_fp_context32) |
| cfc1 t1, fcr31 |
| |
| EX sdc1 $f0, SC32_FPREGS+0(a0) |
| EX sdc1 $f2, SC32_FPREGS+16(a0) |
| EX sdc1 $f4, SC32_FPREGS+32(a0) |
| EX sdc1 $f6, SC32_FPREGS+48(a0) |
| EX sdc1 $f8, SC32_FPREGS+64(a0) |
| EX sdc1 $f10, SC32_FPREGS+80(a0) |
| EX sdc1 $f12, SC32_FPREGS+96(a0) |
| EX sdc1 $f14, SC32_FPREGS+112(a0) |
| EX sdc1 $f16, SC32_FPREGS+128(a0) |
| EX sdc1 $f18, SC32_FPREGS+144(a0) |
| EX sdc1 $f20, SC32_FPREGS+160(a0) |
| EX sdc1 $f22, SC32_FPREGS+176(a0) |
| EX sdc1 $f24, SC32_FPREGS+192(a0) |
| EX sdc1 $f26, SC32_FPREGS+208(a0) |
| EX sdc1 $f28, SC32_FPREGS+224(a0) |
| EX sdc1 $f30, SC32_FPREGS+240(a0) |
| EX sw t1, SC32_FPC_CSR(a0) |
| cfc1 t0, $0 # implementation/version |
| EX sw t0, SC32_FPC_EIR(a0) |
| |
| jr ra |
| li v0, 0 # success |
| END(_save_fp_context32) |
| #endif |
| |
| /* |
| * Restore FPU state: |
| * - fp gp registers |
| * - cp1 status/control register |
| */ |
| LEAF(_restore_fp_context) |
| EX lw t0, SC_FPC_CSR(a0) |
| #ifdef CONFIG_64BIT |
| EX ldc1 $f1, SC_FPREGS+8(a0) |
| EX ldc1 $f3, SC_FPREGS+24(a0) |
| EX ldc1 $f5, SC_FPREGS+40(a0) |
| EX ldc1 $f7, SC_FPREGS+56(a0) |
| EX ldc1 $f9, SC_FPREGS+72(a0) |
| EX ldc1 $f11, SC_FPREGS+88(a0) |
| EX ldc1 $f13, SC_FPREGS+104(a0) |
| EX ldc1 $f15, SC_FPREGS+120(a0) |
| EX ldc1 $f17, SC_FPREGS+136(a0) |
| EX ldc1 $f19, SC_FPREGS+152(a0) |
| EX ldc1 $f21, SC_FPREGS+168(a0) |
| EX ldc1 $f23, SC_FPREGS+184(a0) |
| EX ldc1 $f25, SC_FPREGS+200(a0) |
| EX ldc1 $f27, SC_FPREGS+216(a0) |
| EX ldc1 $f29, SC_FPREGS+232(a0) |
| EX ldc1 $f31, SC_FPREGS+248(a0) |
| #endif |
| EX ldc1 $f0, SC_FPREGS+0(a0) |
| EX ldc1 $f2, SC_FPREGS+16(a0) |
| EX ldc1 $f4, SC_FPREGS+32(a0) |
| EX ldc1 $f6, SC_FPREGS+48(a0) |
| EX ldc1 $f8, SC_FPREGS+64(a0) |
| EX ldc1 $f10, SC_FPREGS+80(a0) |
| EX ldc1 $f12, SC_FPREGS+96(a0) |
| EX ldc1 $f14, SC_FPREGS+112(a0) |
| EX ldc1 $f16, SC_FPREGS+128(a0) |
| EX ldc1 $f18, SC_FPREGS+144(a0) |
| EX ldc1 $f20, SC_FPREGS+160(a0) |
| EX ldc1 $f22, SC_FPREGS+176(a0) |
| EX ldc1 $f24, SC_FPREGS+192(a0) |
| EX ldc1 $f26, SC_FPREGS+208(a0) |
| EX ldc1 $f28, SC_FPREGS+224(a0) |
| EX ldc1 $f30, SC_FPREGS+240(a0) |
| ctc1 t0, fcr31 |
| jr ra |
| li v0, 0 # success |
| END(_restore_fp_context) |
| |
| #ifdef CONFIG_MIPS32_COMPAT |
| LEAF(_restore_fp_context32) |
| /* Restore an o32 sigcontext. */ |
| EX lw t0, SC32_FPC_CSR(a0) |
| EX ldc1 $f0, SC32_FPREGS+0(a0) |
| EX ldc1 $f2, SC32_FPREGS+16(a0) |
| EX ldc1 $f4, SC32_FPREGS+32(a0) |
| EX ldc1 $f6, SC32_FPREGS+48(a0) |
| EX ldc1 $f8, SC32_FPREGS+64(a0) |
| EX ldc1 $f10, SC32_FPREGS+80(a0) |
| EX ldc1 $f12, SC32_FPREGS+96(a0) |
| EX ldc1 $f14, SC32_FPREGS+112(a0) |
| EX ldc1 $f16, SC32_FPREGS+128(a0) |
| EX ldc1 $f18, SC32_FPREGS+144(a0) |
| EX ldc1 $f20, SC32_FPREGS+160(a0) |
| EX ldc1 $f22, SC32_FPREGS+176(a0) |
| EX ldc1 $f24, SC32_FPREGS+192(a0) |
| EX ldc1 $f26, SC32_FPREGS+208(a0) |
| EX ldc1 $f28, SC32_FPREGS+224(a0) |
| EX ldc1 $f30, SC32_FPREGS+240(a0) |
| ctc1 t0, fcr31 |
| jr ra |
| li v0, 0 # success |
| END(_restore_fp_context32) |
| .set reorder |
| #endif |
| |
| .type fault@function |
| .ent fault |
| fault: li v0, -EFAULT # failure |
| jr ra |
| .end fault |
