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target-arm: Reinstate display of VFP registers in cpu_dump_state 

Reinstate the display of VFP registers in cpu_dump_state(), if
the CPU has them (this code had been #if 0'd out a for a long time).
We drop the attempt ot display the values as floating point, since
this makes assumptions about the host 'float' and 'double' formats
and is not done by eg the i386 cpu_dump_state().
This display is gated on the CPU_DUMP_FPU flag, as for x86.

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
This commit is contained in:
Peter Maydell 2012-10-05 15:04:44 +01:00
parent 6fd2a026fb
commit f2617cfc23
1 changed files with 16 additions and 26 deletions
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42
target-arm/translate.c
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@ -9970,19 +9970,6 @@ void cpu_dump_state(CPUARMState *env, FILE *f, fprintf_function cpu_fprintf,
int flags)
{
int i;
#if 0
union {
uint32_t i;
float s;
} s0, s1;
CPU_DoubleU d;
/* ??? This assumes float64 and double have the same layout.
Oh well, it's only debug dumps. */
union {
float64 f64;
double d;
} d0;
#endif
uint32_t psr;
for(i=0;i<16;i++) {
@ -10002,20 +9989,23 @@ void cpu_dump_state(CPUARMState *env, FILE *f, fprintf_function cpu_fprintf,
psr & CPSR_T ? 'T' : 'A',
cpu_mode_names[psr & 0xf], (psr & 0x10) ? 32 : 26);
#if 0
for (i = 0; i < 16; i++) {
d.d = env->vfp.regs[i];
s0.i = d.l.lower;
s1.i = d.l.upper;
d0.f64 = d.d;
cpu_fprintf(f, "s%02d=%08x(%8g) s%02d=%08x(%8g) d%02d=%08x%08x(%8g)\n",
i * 2, (int)s0.i, s0.s,
i * 2 + 1, (int)s1.i, s1.s,
i, (int)(uint32_t)d.l.upper, (int)(uint32_t)d.l.lower,
d0.d);
if (flags & CPU_DUMP_FPU) {
int numvfpregs = 0;
if (arm_feature(env, ARM_FEATURE_VFP)) {
numvfpregs += 16;
}
if (arm_feature(env, ARM_FEATURE_VFP3)) {
numvfpregs += 16;
}
for (i = 0; i < numvfpregs; i++) {
uint64_t v = float64_val(env->vfp.regs[i]);
cpu_fprintf(f, "s%02d=%08x s%02d=%08x d%02d=%016" PRIx64 "\n",
i * 2, (uint32_t)v,
i * 2 + 1, (uint32_t)(v >> 32),
i, v);
}
cpu_fprintf(f, "FPSCR: %08x\n", (int)env->vfp.xregs[ARM_VFP_FPSCR]);
}
cpu_fprintf(f, "FPSCR: %08x\n", (int)env->vfp.xregs[ARM_VFP_FPSCR]);
#endif
}
void restore_state_to_opc(CPUARMState *env, TranslationBlock *tb, int pc_pos)