ShuriZma
/
xemu
mirror of https://github.com/xemu-project/xemu.git
1
0
Fork 0
Code Issues Packages Projects Releases Wiki Activity

tcg: Allocate sufficient storage in temp_allocate_frame 

This function should have been updated for vector types
when they were introduced.

Fixes: d2fd745fe8
Resolves: https://gitlab.com/qemu-project/qemu/-/issues/367
Cc: qemu-stable@nongnu.org
Tested-by: Stefan Weil <sw@weilnetz.de>
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 21:53:27 -07:00
parent 9defd1bdfb
commit c1c091948a
1 changed files with 26 additions and 5 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

31
tcg/tcg.c
View File

@ -3015,17 +3015,38 @@ static void check_regs(TCGContext *s)
static void temp_allocate_frame(TCGContext *s, TCGTemp *ts) static void temp_allocate_frame(TCGContext *s, TCGTemp *ts)
{ {
if (s->current_frame_offset + (tcg_target_long)sizeof(tcg_target_long) > intptr_t off, size, align;
s->frame_end) {
tcg_abort(); switch (ts->type) {
case TCG_TYPE_I32:
size = align = 4;
break;
case TCG_TYPE_I64:
case TCG_TYPE_V64:
size = align = 8;
break;
case TCG_TYPE_V128:
size = align = 16;
break;
case TCG_TYPE_V256:
/* Note that we do not require aligned storage for V256. */
size = 32, align = 16;
break;
default:
g_assert_not_reached();
} }
ts->mem_offset = s->current_frame_offset;
assert(align <= TCG_TARGET_STACK_ALIGN);
off = ROUND_UP(s->current_frame_offset, align);
assert(off + size <= s->frame_end);
s->current_frame_offset = off + size;
ts->mem_offset = off;
#if defined(__sparc__) #if defined(__sparc__)
ts->mem_offset += TCG_TARGET_STACK_BIAS; ts->mem_offset += TCG_TARGET_STACK_BIAS;
#endif #endif
ts->mem_base = s->frame_temp; ts->mem_base = s->frame_temp;
ts->mem_allocated = 1; ts->mem_allocated = 1;
s->current_frame_offset += sizeof(tcg_target_long);
} }
static void temp_load(TCGContext *, TCGTemp *, TCGRegSet, TCGRegSet, TCGRegSet); static void temp_load(TCGContext *, TCGTemp *, TCGRegSet, TCGRegSet, TCGRegSet);