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target-ppc: gdbstub: introduce avr_need_swap()

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This helper will be used to support Altivec registers in little-endian guests.
This patch does not change functionnality.

Note: I had to put the helper some lines away from the gdb_*_avr_reg()
routines to get a more readable patch.

Signed-off-by: Greg Kurz <gkurz@linux.vnet.ibm.com>
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
This commit is contained in:
Greg Kurz 2016-01-15 16:00:31 +01:00 committed by David Gibson
parent 385abeb3e3
commit 87601e2d5c
1 changed files with 23 additions and 14 deletions
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37
target-ppc/translate_init.c
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@ -8750,6 +8750,15 @@ static void dump_ppc_insns (CPUPPCState *env)
} }
#endif #endif
static bool avr_need_swap(CPUPPCState *env)
{
#ifdef HOST_WORDS_BIGENDIAN
return false;
#else
return true;
#endif
}
static int gdb_get_float_reg(CPUPPCState *env, uint8_t *mem_buf, int n) static int gdb_get_float_reg(CPUPPCState *env, uint8_t *mem_buf, int n)
{ {
if (n < 32) { if (n < 32) {
@ -8783,13 +8792,13 @@ static int gdb_set_float_reg(CPUPPCState *env, uint8_t *mem_buf, int n)
static int gdb_get_avr_reg(CPUPPCState *env, uint8_t *mem_buf, int n) static int gdb_get_avr_reg(CPUPPCState *env, uint8_t *mem_buf, int n)
{ {
if (n < 32) { if (n < 32) {
#ifdef HOST_WORDS_BIGENDIAN if (!avr_need_swap(env)) {
stq_p(mem_buf, env->avr[n].u64[0]); stq_p(mem_buf, env->avr[n].u64[0]);
stq_p(mem_buf+8, env->avr[n].u64[1]); stq_p(mem_buf+8, env->avr[n].u64[1]);
#else } else {
stq_p(mem_buf, env->avr[n].u64[1]); stq_p(mem_buf, env->avr[n].u64[1]);
stq_p(mem_buf+8, env->avr[n].u64[0]); stq_p(mem_buf+8, env->avr[n].u64[0]);
#endif }
return 16; return 16;
} }
if (n == 32) { if (n == 32) {
@ -8806,13 +8815,13 @@ static int gdb_get_avr_reg(CPUPPCState *env, uint8_t *mem_buf, int n)
static int gdb_set_avr_reg(CPUPPCState *env, uint8_t *mem_buf, int n) static int gdb_set_avr_reg(CPUPPCState *env, uint8_t *mem_buf, int n)
{ {
if (n < 32) { if (n < 32) {
#ifdef HOST_WORDS_BIGENDIAN if (!avr_need_swap(env)) {
env->avr[n].u64[0] = ldq_p(mem_buf); env->avr[n].u64[0] = ldq_p(mem_buf);
env->avr[n].u64[1] = ldq_p(mem_buf+8); env->avr[n].u64[1] = ldq_p(mem_buf+8);
#else } else {
env->avr[n].u64[1] = ldq_p(mem_buf); env->avr[n].u64[1] = ldq_p(mem_buf);
env->avr[n].u64[0] = ldq_p(mem_buf+8); env->avr[n].u64[0] = ldq_p(mem_buf+8);
#endif }
return 16; return 16;
} }
if (n == 32) { if (n == 32) {