motorhead/qemu
1
0
Fork 0
mirror of https://github.com/Motorhead1991/qemu.git synced 2025-08-04 16:23:55 -06:00
Code Issues Projects Releases Packages Wiki Activity Actions

tcg/sparc: Fix temp_allocate_frame vs sparc stack bias

Browse source 
We should not be aligning the offset in temp_allocate_frame,
because the odd offset produces an aligned address in the end.
Instead, pass the logical offset into tcg_set_frame and add
the stack bias last.

Cc: qemu-stable@nongnu.org
Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
This commit is contained in:
Richard Henderson 2021-06-18 16:49:26 -07:00
parent 08dff435e2
commit 9defd1bdfb
2 changed files with 13 additions and 12 deletions
Download patch file Download diff file Expand all files Collapse all files

9
tcg/tcg.c
View file

@ -3015,17 +3015,14 @@ static void check_regs(TCGContext *s)
static void temp_allocate_frame(TCGContext *s, TCGTemp *ts)
{
#if !(defined(__sparc__) && TCG_TARGET_REG_BITS == 64)
/* Sparc64 stack is accessed with offset of 2047 */
s->current_frame_offset = (s->current_frame_offset +
(tcg_target_long)sizeof(tcg_target_long) - 1) &
~(sizeof(tcg_target_long) - 1);
#endif
if (s->current_frame_offset + (tcg_target_long)sizeof(tcg_target_long) >
s->frame_end) {
tcg_abort();
}
ts->mem_offset = s->current_frame_offset;
#if defined(__sparc__)
ts->mem_offset += TCG_TARGET_STACK_BIAS;
#endif
ts->mem_base = s->frame_temp;
ts->mem_allocated = 1;
s->current_frame_offset += sizeof(tcg_target_long);