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target-xtensa: fix search_pc for the last TB opcode

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Zero out tcg_ctx.gen_opc_instr_start for instructions representing the
last guest opcode in the TB.

Cc: qemu-stable@nongnu.org
Signed-off-by: Max Filippov <jcmvbkbc@gmail.com>
Signed-off-by: Blue Swirl <blauwirbel@gmail.com>
This commit is contained in:
Max Filippov 2012-12-20 00:04:09 +04:00 • committed by Blue Swirl
parent 3f124b6874
commit 36f25d2537
1 changed files with 5 additions and 1 deletions
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6
target-xtensa/translate.c
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@ -3005,7 +3005,11 @@ static void gen_intermediate_code_internal(
gen_icount_end(tb, insn_count); gen_icount_end(tb, insn_count);
*tcg_ctx.gen_opc_ptr = INDEX_op_end; *tcg_ctx.gen_opc_ptr = INDEX_op_end;
if (!search_pc) { if (search_pc) {
j = tcg_ctx.gen_opc_ptr - tcg_ctx.gen_opc_buf;
memset(tcg_ctx.gen_opc_instr_start + lj + 1, 0,
(j - lj) * sizeof(tcg_ctx.gen_opc_instr_start[0]));
} else {
tb->size = dc.pc - pc_start; tb->size = dc.pc - pc_start;
tb->icount = insn_count; tb->icount = insn_count;
} }