From 4b724efdde0287d7ba616bd2badc63fca414f978 Mon Sep 17 00:00:00 2001 From: Ralf Baechle Date: Sun, 23 Oct 2005 15:05:47 +0100 Subject: Get rid of SINGLE_ONLY_FPU. Linux does not support half FPU other than by emulation of a full FPU. Signed-off-by: Ralf Baechle --- arch/mips/math-emu/cp1emu.c | 70 ++++++--------------------------------------- 1 file changed, 8 insertions(+), 62 deletions(-) (limited to 'arch/mips/math-emu') diff --git a/arch/mips/math-emu/cp1emu.c b/arch/mips/math-emu/cp1emu.c index c4a7853c571..aa5818a0d88 100644 --- a/arch/mips/math-emu/cp1emu.c +++ b/arch/mips/math-emu/cp1emu.c @@ -256,7 +256,6 @@ static int cop1Emulate(struct pt_regs *xcp, struct mips_fpu_soft_struct *ctx) emul: fpuemustats.emulated++; switch (MIPSInst_OPCODE(ir)) { -#ifndef SINGLE_ONLY_FPU case ldc1_op:{ u64 __user *va = (u64 __user *) (xcp->regs[MIPSInst_RS(ir)] + MIPSInst_SIMM(ir)); @@ -284,7 +283,6 @@ static int cop1Emulate(struct pt_regs *xcp, struct mips_fpu_soft_struct *ctx) } break; } -#endif case lwc1_op:{ u32 __user *va = (u32 __user *) (xcp->regs[MIPSInst_RS(ir)] + @@ -296,12 +294,6 @@ static int cop1Emulate(struct pt_regs *xcp, struct mips_fpu_soft_struct *ctx) fpuemustats.errors++; return SIGBUS; } -#ifdef SINGLE_ONLY_FPU - if (MIPSInst_RT(ir) & 1) { - /* illegal register in single-float mode */ - return SIGILL; - } -#endif SITOREG(val, MIPSInst_RT(ir)); break; } @@ -312,12 +304,6 @@ static int cop1Emulate(struct pt_regs *xcp, struct mips_fpu_soft_struct *ctx) u32 val; fpuemustats.stores++; -#ifdef SINGLE_ONLY_FPU - if (MIPSInst_RT(ir) & 1) { - /* illegal register in single-float mode */ - return SIGILL; - } -#endif SIFROMREG(val, MIPSInst_RT(ir)); if (put_user(val, va)) { fpuemustats.errors++; @@ -329,7 +315,7 @@ static int cop1Emulate(struct pt_regs *xcp, struct mips_fpu_soft_struct *ctx) case cop1_op: switch (MIPSInst_RS(ir)) { -#if defined(__mips64) && !defined(SINGLE_ONLY_FPU) +#if defined(__mips64) case dmfc_op: /* copregister fs -> gpr[rt] */ if (MIPSInst_RT(ir) != 0) { @@ -346,12 +332,6 @@ static int cop1Emulate(struct pt_regs *xcp, struct mips_fpu_soft_struct *ctx) case mfc_op: /* copregister rd -> gpr[rt] */ -#ifdef SINGLE_ONLY_FPU - if (MIPSInst_RD(ir) & 1) { - /* illegal register in single-float mode */ - return SIGILL; - } -#endif if (MIPSInst_RT(ir) != 0) { SIFROMREG(xcp->regs[MIPSInst_RT(ir)], MIPSInst_RD(ir)); @@ -360,12 +340,6 @@ static int cop1Emulate(struct pt_regs *xcp, struct mips_fpu_soft_struct *ctx) case mtc_op: /* copregister rd <- rt */ -#ifdef SINGLE_ONLY_FPU - if (MIPSInst_RD(ir) & 1) { - /* illegal register in single-float mode */ - return SIGILL; - } -#endif SITOREG(xcp->regs[MIPSInst_RT(ir)], MIPSInst_RD(ir)); break; @@ -467,7 +441,7 @@ static int cop1Emulate(struct pt_regs *xcp, struct mips_fpu_soft_struct *ctx) switch (MIPSInst_OPCODE(ir)) { case lwc1_op: case swc1_op: -#if (__mips >= 2 || defined(__mips64)) && !defined(SINGLE_ONLY_FPU) +#if (__mips >= 2 || defined(__mips64)) case ldc1_op: case sdc1_op: #endif @@ -646,14 +620,6 @@ static int fpux_emu(struct pt_regs *xcp, struct mips_fpu_soft_struct *ctx, fpuemustats.errors++; return SIGBUS; } -#ifdef SINGLE_ONLY_FPU - if (MIPSInst_FD(ir) & 1) { - /* illegal register in single-float - * mode - */ - return SIGILL; - } -#endif SITOREG(val, MIPSInst_FD(ir)); break; @@ -662,14 +628,6 @@ static int fpux_emu(struct pt_regs *xcp, struct mips_fpu_soft_struct *ctx, xcp->regs[MIPSInst_FT(ir)]); fpuemustats.stores++; -#ifdef SINGLE_ONLY_FPU - if (MIPSInst_FS(ir) & 1) { - /* illegal register in single-float - * mode - */ - return SIGILL; - } -#endif SIFROMREG(val, MIPSInst_FS(ir)); if (put_user(val, va)) { @@ -723,7 +681,6 @@ static int fpux_emu(struct pt_regs *xcp, struct mips_fpu_soft_struct *ctx, break; } -#ifndef SINGLE_ONLY_FPU case d_fmt:{ /* 1 */ ieee754dp(*handler) (ieee754dp, ieee754dp, ieee754dp); ieee754dp fd, fr, fs, ft; @@ -781,7 +738,6 @@ static int fpux_emu(struct pt_regs *xcp, struct mips_fpu_soft_struct *ctx, } break; } -#endif case 0x7: /* 7 */ if (MIPSInst_FUNC(ir) != pfetch_op) { @@ -921,9 +877,6 @@ static int fpu_emu(struct pt_regs *xcp, struct mips_fpu_soft_struct *ctx, case fcvts_op: return SIGILL; /* not defined */ case fcvtd_op:{ -#ifdef SINGLE_ONLY_FPU - return SIGILL; /* not defined */ -#else ieee754sp fs; SPFROMREG(fs, MIPSInst_FS(ir)); @@ -931,7 +884,6 @@ static int fpu_emu(struct pt_regs *xcp, struct mips_fpu_soft_struct *ctx, rfmt = d_fmt; goto copcsr; } -#endif case fcvtw_op:{ ieee754sp fs; @@ -958,7 +910,7 @@ static int fpu_emu(struct pt_regs *xcp, struct mips_fpu_soft_struct *ctx, } #endif /* __mips >= 2 */ -#if defined(__mips64) && !defined(SINGLE_ONLY_FPU) +#if defined(__mips64) case fcvtl_op:{ ieee754sp fs; @@ -982,7 +934,7 @@ static int fpu_emu(struct pt_regs *xcp, struct mips_fpu_soft_struct *ctx, rfmt = l_fmt; goto copcsr; } -#endif /* defined(__mips64) && !fpu(single) */ +#endif /* defined(__mips64) */ default: if (MIPSInst_FUNC(ir) >= fcmp_op) { @@ -1009,7 +961,6 @@ static int fpu_emu(struct pt_regs *xcp, struct mips_fpu_soft_struct *ctx, break; } -#ifndef SINGLE_ONLY_FPU case d_fmt:{ union { ieee754dp(*b) (ieee754dp, ieee754dp); @@ -1133,7 +1084,7 @@ static int fpu_emu(struct pt_regs *xcp, struct mips_fpu_soft_struct *ctx, } #endif -#if defined(__mips64) && !defined(SINGLE_ONLY_FPU) +#if defined(__mips64) case fcvtl_op:{ ieee754dp fs; @@ -1157,7 +1108,7 @@ static int fpu_emu(struct pt_regs *xcp, struct mips_fpu_soft_struct *ctx, rfmt = l_fmt; goto copcsr; } -#endif /* __mips >= 3 && !fpu(single) */ +#endif /* __mips >= 3 */ default: if (MIPSInst_FUNC(ir) >= fcmp_op) { @@ -1185,7 +1136,6 @@ static int fpu_emu(struct pt_regs *xcp, struct mips_fpu_soft_struct *ctx, } break; } -#endif /* ifndef SINGLE_ONLY_FPU */ case w_fmt:{ ieee754sp fs; @@ -1197,21 +1147,19 @@ static int fpu_emu(struct pt_regs *xcp, struct mips_fpu_soft_struct *ctx, rv.s = ieee754sp_fint(fs.bits); rfmt = s_fmt; goto copcsr; -#ifndef SINGLE_ONLY_FPU case fcvtd_op: /* convert word to double precision real */ SPFROMREG(fs, MIPSInst_FS(ir)); rv.d = ieee754dp_fint(fs.bits); rfmt = d_fmt; goto copcsr; -#endif default: return SIGILL; } break; } -#if defined(__mips64) && !defined(SINGLE_ONLY_FPU) +#if defined(__mips64) case l_fmt:{ switch (MIPSInst_FUNC(ir)) { case fcvts_op: @@ -1264,18 +1212,16 @@ static int fpu_emu(struct pt_regs *xcp, struct mips_fpu_soft_struct *ctx, ctx->fcr31 &= ~cond; break; } -#ifndef SINGLE_ONLY_FPU case d_fmt: DPTOREG(rv.d, MIPSInst_FD(ir)); break; -#endif case s_fmt: SPTOREG(rv.s, MIPSInst_FD(ir)); break; case w_fmt: SITOREG(rv.w, MIPSInst_FD(ir)); break; -#if defined(__mips64) && !defined(SINGLE_ONLY_FPU) +#if defined(__mips64) case l_fmt: DITOREG(rv.l, MIPSInst_FD(ir)); break; -- cgit v1.2.3