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authorRalf Baechle <ralf@linux-mips.org>2005-10-23 15:05:47 +0100
committerRalf Baechle <ralf@linux-mips.org>2005-10-29 19:32:52 +0100
commit4b724efdde0287d7ba616bd2badc63fca414f978 (patch)
tree9c30ecd163d782a4fff8542b557d8811c3a4ef3e /arch/mips/math-emu
parent3fccc0150e720ff344b5f9c5f8dd23778139018e (diff)
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 <ralf@linux-mips.org>
Diffstat (limited to 'arch/mips/math-emu')
-rw-r--r--arch/mips/math-emu/cp1emu.c70
1 files changed, 8 insertions, 62 deletions
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;