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[Qemu-devel] [PULL 23/39] target-ppc: gdbstub: fix altivec registers for
From: |
David Gibson |
Subject: |
[Qemu-devel] [PULL 23/39] target-ppc: gdbstub: fix altivec registers for little-endian guests |
Date: |
Fri, 29 Jan 2016 16:06:55 +1100 |
From: Greg Kurz <address@hidden>
Altivec registers are 128-bit wide. They are stored in memory as two
64-bit values that must be byteswapped when the guest is little-endian.
Let's reuse the ppc_maybe_bswap_register() helper for this.
We also need to fix the ordering of the 64-bit elements according to
the target endianness, for both system and user mode.
Signed-off-by: Greg Kurz <address@hidden>
Signed-off-by: David Gibson <address@hidden>
---
target-ppc/translate_init.c | 12 ++++++++++--
1 file changed, 10 insertions(+), 2 deletions(-)
diff --git a/target-ppc/translate_init.c b/target-ppc/translate_init.c
index 41308c3..02734a2 100644
--- a/target-ppc/translate_init.c
+++ b/target-ppc/translate_init.c
@@ -8754,9 +8754,9 @@ static void dump_ppc_insns (CPUPPCState *env)
static bool avr_need_swap(CPUPPCState *env)
{
#ifdef HOST_WORDS_BIGENDIAN
- return false;
+ return msr_le;
#else
- return true;
+ return !msr_le;
#endif
}
@@ -8800,14 +8800,18 @@ static int gdb_get_avr_reg(CPUPPCState *env, uint8_t
*mem_buf, int n)
stq_p(mem_buf, env->avr[n].u64[1]);
stq_p(mem_buf+8, env->avr[n].u64[0]);
}
+ ppc_maybe_bswap_register(env, mem_buf, 8);
+ ppc_maybe_bswap_register(env, mem_buf + 8, 8);
return 16;
}
if (n == 32) {
stl_p(mem_buf, env->vscr);
+ ppc_maybe_bswap_register(env, mem_buf, 4);
return 4;
}
if (n == 33) {
stl_p(mem_buf, (uint32_t)env->spr[SPR_VRSAVE]);
+ ppc_maybe_bswap_register(env, mem_buf, 4);
return 4;
}
return 0;
@@ -8816,6 +8820,8 @@ 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)
{
if (n < 32) {
+ ppc_maybe_bswap_register(env, mem_buf, 8);
+ ppc_maybe_bswap_register(env, mem_buf + 8, 8);
if (!avr_need_swap(env)) {
env->avr[n].u64[0] = ldq_p(mem_buf);
env->avr[n].u64[1] = ldq_p(mem_buf+8);
@@ -8826,10 +8832,12 @@ static int gdb_set_avr_reg(CPUPPCState *env, uint8_t
*mem_buf, int n)
return 16;
}
if (n == 32) {
+ ppc_maybe_bswap_register(env, mem_buf, 4);
env->vscr = ldl_p(mem_buf);
return 4;
}
if (n == 33) {
+ ppc_maybe_bswap_register(env, mem_buf, 4);
env->spr[SPR_VRSAVE] = (target_ulong)ldl_p(mem_buf);
return 4;
}
--
2.5.0
- [Qemu-devel] [PULL 00/39] ppc-for-2.6 queue 20160129, David Gibson, 2016/01/29
- [Qemu-devel] [PULL 00/39] ppc-for-2.6 queue 20160129, David Gibson, 2016/01/29
- [Qemu-devel] [PULL 05/39] mac_dbdma: add DBDMA controller state to VMStateDescription, David Gibson, 2016/01/29
- [Qemu-devel] [PULL 04/39] macio: add dma_active to VMStateDescription, David Gibson, 2016/01/29
- [Qemu-devel] [PULL 01/39] target-ppc: Use sensible POWER8/POWER8E versions, David Gibson, 2016/01/29
- [Qemu-devel] [PULL 12/39] pseries: Clean up error handling of spapr_cpu_init(), David Gibson, 2016/01/29
- [Qemu-devel] [PULL 14/39] pseries: Clean up error handling in spapr_vga_init(), David Gibson, 2016/01/29
- [Qemu-devel] [PULL 23/39] target-ppc: gdbstub: fix altivec registers for little-endian guests,
David Gibson <=
- [Qemu-devel] [PULL 26/39] pseries: Allow TCG h_enter to work with hotplugged memory, David Gibson, 2016/01/29
- [Qemu-devel] [PULL 11/39] ppc: Clean up error handling in ppc_set_compat(), David Gibson, 2016/01/29
- [Qemu-devel] [PULL 17/39] pseries: Clean up error reporting in ppc_spapr_init(), David Gibson, 2016/01/29
- [Qemu-devel] [PULL 33/39] target-ppc: Use actual page size encodings from HPTE, David Gibson, 2016/01/29
- [Qemu-devel] [PULL 34/39] target-ppc: Remove unused mmu models from ppc_tlb_invalidate_one, David Gibson, 2016/01/29
- [Qemu-devel] [PULL 06/39] cuda: add missing fields to VMStateDescription, David Gibson, 2016/01/29
- [Qemu-devel] [PULL 15/39] pseries: Clean up error handling in spapr_rtas_register(), David Gibson, 2016/01/29
- [Qemu-devel] [PULL 10/39] spapr: Don't create ibm, dynamic-reconfiguration-memory w/o DR LMBs, David Gibson, 2016/01/29
- [Qemu-devel] [PULL 07/39] spapr: Small fixes to rtas_ibm_get_system_parameter, remove rtas_st_buffer, David Gibson, 2016/01/29
- [Qemu-devel] [PULL 16/39] pseries: Clean up error handling in xics_system_init(), David Gibson, 2016/01/29