From a044ec2a066a6002f83aba5ee937db17e7493fa8 Mon Sep 17 00:00:00 2001 From: Max Filippov Date: Sat, 14 Jan 2012 13:29:29 +0400 Subject: target-xtensa: fetch 3rd opcode byte only when needed According to ISA, 3.5.4, third opcode byte should not be fetched for 2-byte instructions. Signed-off-by: Max Filippov --- target-xtensa/translate.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) (limited to 'target-xtensa/translate.c') diff --git a/target-xtensa/translate.c b/target-xtensa/translate.c index c81450d..6a0177f 100644 --- a/target-xtensa/translate.c +++ b/target-xtensa/translate.c @@ -749,7 +749,7 @@ static void disas_xtensa_insn(DisasContext *dc) uint8_t b0 = ldub_code(dc->pc); uint8_t b1 = ldub_code(dc->pc + 1); - uint8_t b2 = ldub_code(dc->pc + 2); + uint8_t b2 = 0; static const uint32_t B4CONST[] = { 0xffffffff, 1, 2, 3, 4, 5, 6, 7, 8, 10, 12, 16, 32, 64, 128, 256 @@ -764,6 +764,7 @@ static void disas_xtensa_insn(DisasContext *dc) HAS_OPTION(XTENSA_OPTION_CODE_DENSITY); } else { dc->next_pc = dc->pc + 3; + b2 = ldub_code(dc->pc + 2); } switch (OP0) { -- cgit v1.1