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Add GDB XML register description support.

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Signed-off-by: Paul Brook <paul@codesourcery.com>


git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@5459 c046a42c-6fe2-441c-8c8c-71466251a162
This commit is contained in:
pbrook 2008-10-11 17:55:29 +00:00
parent 1792f2867c
commit 56aebc8916
13 changed files with 1247 additions and 613 deletions
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62
target-arm/helper.c
View file

@ -173,6 +173,58 @@ void cpu_reset(CPUARMState *env)
tlb_flush(env, 1);
}
static int vfp_gdb_get_reg(CPUState *env, uint8_t *buf, int reg)
{
int nregs;
/* VFP data registers are always little-endian. */
nregs = arm_feature(env, ARM_FEATURE_VFP3) ? 32 : 16;
if (reg < nregs) {
stfq_le_p(buf, env->vfp.regs[reg]);
return 8;
}
if (arm_feature(env, ARM_FEATURE_NEON)) {
/* Aliases for Q regs. */
nregs += 16;
if (reg < nregs) {
stfq_le_p(buf, env->vfp.regs[(reg - 32) * 2]);
stfq_le_p(buf + 8, env->vfp.regs[(reg - 32) * 2 + 1]);
return 16;
}
}
switch (reg - nregs) {
case 0: stl_p(buf, env->vfp.xregs[ARM_VFP_FPSID]); return 4;
case 1: stl_p(buf, env->vfp.xregs[ARM_VFP_FPSCR]); return 4;
case 2: stl_p(buf, env->vfp.xregs[ARM_VFP_FPEXC]); return 4;
}
return 0;
}
static int vfp_gdb_set_reg(CPUState *env, uint8_t *buf, int reg)
{
int nregs;
nregs = arm_feature(env, ARM_FEATURE_VFP3) ? 32 : 16;
if (reg < nregs) {
env->vfp.regs[reg] = ldfq_le_p(buf);
return 8;
}
if (arm_feature(env, ARM_FEATURE_NEON)) {
nregs += 16;
if (reg < nregs) {
env->vfp.regs[(reg - 32) * 2] = ldfq_le_p(buf);
env->vfp.regs[(reg - 32) * 2 + 1] = ldfq_le_p(buf + 8);
return 16;
}
}
switch (reg - nregs) {
case 0: env->vfp.xregs[ARM_VFP_FPSID] = ldl_p(buf); return 4;
case 1: env->vfp.xregs[ARM_VFP_FPSCR] = ldl_p(buf); return 4;
case 2: env->vfp.xregs[ARM_VFP_FPEXC] = ldl_p(buf); return 4;
}
return 0;
}
CPUARMState *cpu_arm_init(const char *cpu_model)
{
CPUARMState *env;
@ -194,6 +246,16 @@ CPUARMState *cpu_arm_init(const char *cpu_model)
env->cpu_model_str = cpu_model;
env->cp15.c0_cpuid = id;
cpu_reset(env);
if (arm_feature(env, ARM_FEATURE_NEON)) {
gdb_register_coprocessor(env, vfp_gdb_get_reg, vfp_gdb_set_reg,
51, "arm-neon.xml", 0);
} else if (arm_feature(env, ARM_FEATURE_VFP3)) {
gdb_register_coprocessor(env, vfp_gdb_get_reg, vfp_gdb_set_reg,
35, "arm-vfp3.xml", 0);
} else if (arm_feature(env, ARM_FEATURE_VFP)) {
gdb_register_coprocessor(env, vfp_gdb_get_reg, vfp_gdb_set_reg,
19, "arm-vfp.xml", 0);
}
return env;
}