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target-xtensa: add window overflow check to L32E/S32E

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Despite L32E and S32E primary use is for window underflow and overflow
exception handlers they are just normal instructions, and thus need to
check for window overflow.

Cc: qemu-stable@nongnu.org
Signed-off-by: Max Filippov <jcmvbkbc@gmail.com>
This commit is contained in:
Max Filippov 2015-07-19 10:02:37 +03:00
parent 8bfaa25fce
commit f822b7e497
1 changed files with 4 additions and 2 deletions
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6
target-xtensa/translate.c
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@ -1943,7 +1943,8 @@ static void disas_xtensa_insn(CPUXtensaState *env, DisasContext *dc)
switch (OP2) { switch (OP2) {
case 0: /*L32E*/ case 0: /*L32E*/
HAS_OPTION(XTENSA_OPTION_WINDOWED_REGISTER); HAS_OPTION(XTENSA_OPTION_WINDOWED_REGISTER);
if (gen_check_privilege(dc)) { if (gen_check_privilege(dc) &&
gen_window_check2(dc, RRR_S, RRR_T)) {
TCGv_i32 addr = tcg_temp_new_i32(); TCGv_i32 addr = tcg_temp_new_i32();
tcg_gen_addi_i32(addr, cpu_R[RRR_S], tcg_gen_addi_i32(addr, cpu_R[RRR_S],
(0xffffffc0 | (RRR_R << 2))); (0xffffffc0 | (RRR_R << 2)));
@ -1954,7 +1955,8 @@ static void disas_xtensa_insn(CPUXtensaState *env, DisasContext *dc)
case 4: /*S32E*/ case 4: /*S32E*/
HAS_OPTION(XTENSA_OPTION_WINDOWED_REGISTER); HAS_OPTION(XTENSA_OPTION_WINDOWED_REGISTER);
if (gen_check_privilege(dc)) { if (gen_check_privilege(dc) &&
gen_window_check2(dc, RRR_S, RRR_T)) {
TCGv_i32 addr = tcg_temp_new_i32(); TCGv_i32 addr = tcg_temp_new_i32();
tcg_gen_addi_i32(addr, cpu_R[RRR_S], tcg_gen_addi_i32(addr, cpu_R[RRR_S],
(0xffffffc0 | (RRR_R << 2))); (0xffffffc0 | (RRR_R << 2)));