#include <asm/inst.h>
#include <asm/bootinfo.h>
-#include <asm/cpu.h>
-#include <asm/cpu-features.h>
#include <asm/processor.h>
#include <asm/ptrace.h>
#include <asm/signal.h>
/* Function which emulates a floating point instruction. */
-static int fpu_emu(struct pt_regs *, struct mips_fpu_soft_struct *,
+static int fpu_emu(struct pt_regs *, struct mips_fpu_struct *,
mips_instruction);
#if __mips >= 4 && __mips != 32
static int fpux_emu(struct pt_regs *,
- struct mips_fpu_soft_struct *, mips_instruction);
+ struct mips_fpu_struct *, mips_instruction);
#endif
-/* Further private data for which no space exists in mips_fpu_soft_struct */
+/* Further private data for which no space exists in mips_fpu_struct */
struct mips_fpu_emulator_stats fpuemustats;
* Two instructions if the instruction is in a branch delay slot.
*/
-static int cop1Emulate(struct pt_regs *xcp, struct mips_fpu_soft_struct *ctx)
+static int cop1Emulate(struct pt_regs *xcp, struct mips_fpu_struct *ctx)
{
mips_instruction ir;
void * emulpc, *contpc;
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));
}
break;
}
-#endif
case lwc1_op:{
u32 __user *va = (u32 __user *) (xcp->regs[MIPSInst_RS(ir)] +
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;
}
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++;
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) {
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));
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;
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
DEF3OP(nmadd, dp, ieee754dp_mul, ieee754dp_add, ieee754dp_neg);
DEF3OP(nmsub, dp, ieee754dp_mul, ieee754dp_sub, ieee754dp_neg);
-static int fpux_emu(struct pt_regs *xcp, struct mips_fpu_soft_struct *ctx,
+static int fpux_emu(struct pt_regs *xcp, struct mips_fpu_struct *ctx,
mips_instruction ir)
{
unsigned rcsr = 0; /* resulting csr */
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;
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)) {
break;
}
-#ifndef SINGLE_ONLY_FPU
case d_fmt:{ /* 1 */
ieee754dp(*handler) (ieee754dp, ieee754dp, ieee754dp);
ieee754dp fd, fr, fs, ft;
}
break;
}
-#endif
case 0x7: /* 7 */
if (MIPSInst_FUNC(ir) != pfetch_op) {
/*
* Emulate a single COP1 arithmetic instruction.
*/
-static int fpu_emu(struct pt_regs *xcp, struct mips_fpu_soft_struct *ctx,
+static int fpu_emu(struct pt_regs *xcp, struct mips_fpu_struct *ctx,
mips_instruction ir)
{
int rfmt; /* resulting format */
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));
rfmt = d_fmt;
goto copcsr;
}
-#endif
case fcvtw_op:{
ieee754sp fs;
}
#endif /* __mips >= 2 */
-#if defined(__mips64) && !defined(SINGLE_ONLY_FPU)
+#if defined(__mips64)
case fcvtl_op:{
ieee754sp fs;
rfmt = l_fmt;
goto copcsr;
}
-#endif /* defined(__mips64) && !fpu(single) */
+#endif /* defined(__mips64) */
default:
if (MIPSInst_FUNC(ir) >= fcmp_op) {
break;
}
-#ifndef SINGLE_ONLY_FPU
case d_fmt:{
union {
ieee754dp(*b) (ieee754dp, ieee754dp);
}
#endif
-#if defined(__mips64) && !defined(SINGLE_ONLY_FPU)
+#if defined(__mips64)
case fcvtl_op:{
ieee754dp fs;
rfmt = l_fmt;
goto copcsr;
}
-#endif /* __mips >= 3 && !fpu(single) */
+#endif /* __mips >= 3 */
default:
if (MIPSInst_FUNC(ir) >= fcmp_op) {
}
break;
}
-#endif /* ifndef SINGLE_ONLY_FPU */
case w_fmt:{
ieee754sp fs;
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:
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;
return 0;
}
-int fpu_emulator_cop1Handler(struct pt_regs *xcp,
- struct mips_fpu_soft_struct *ctx)
+int fpu_emulator_cop1Handler(struct pt_regs *xcp, struct mips_fpu_struct *ctx,
+ int has_fpu)
{
unsigned long oldepc, prevepc;
mips_instruction insn;
ieee754_csr.rm = mips_rm[ieee754_csr.rm];
}
- if (cpu_has_fpu)
+ if (has_fpu)
break;
if (sig)
break;