motorhead/qemu
1
0
Fork 0
mirror of https://github.com/Motorhead1991/qemu.git synced 2025-08-08 02:03:56 -06:00
Code Issues Projects Releases Packages Wiki Activity Actions

tcg: Add helper_unaligned_{ld,st} for user-only sigbus

Browse source 
To be called from tcg generated code on hosts that support
unaligned accesses natively, in response to an access that
is supposed to be aligned.

Reviewed-by: Warner Losh <imp@bsdimp.com>
Reviewed-by: Peter Maydell <peter.maydell@linaro.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 2021-07-27 19:41:04 -10:00
parent 9395cd0a38
commit 37e891e38f
2 changed files with 16 additions and 0 deletions
Download patch file Download diff file Expand all files Collapse all files

11
accel/tcg/user-exec.c
View file

@ -27,6 +27,7 @@
#include "exec/helper-proto.h"
#include "qemu/atomic128.h"
#include "trace/trace-root.h"
#include "tcg/tcg-ldst.h"
#include "internal.h"
__thread uintptr_t helper_retaddr;
@ -215,6 +216,16 @@ static void validate_memop(MemOpIdx oi, MemOp expected)
#endif
}
void helper_unaligned_ld(CPUArchState *env, target_ulong addr)
{
cpu_loop_exit_sigbus(env_cpu(env), addr, MMU_DATA_LOAD, GETPC());
}
void helper_unaligned_st(CPUArchState *env, target_ulong addr)
{
cpu_loop_exit_sigbus(env_cpu(env), addr, MMU_DATA_STORE, GETPC());
}
static void *cpu_mmu_lookup(CPUArchState *env, target_ulong addr,
MemOpIdx oi, uintptr_t ra, MMUAccessType type)
{