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| author | Richard Henderson <richard.henderson@linaro.org> | 2019-09-04 12:30:56 -0700 |
|---|---|---|
| committer | Peter Maydell <peter.maydell@linaro.org> | 2019-09-05 13:23:04 +0100 |
| commit | 8d4a4dc849a28aded8f335a25b223e8e3391b6f2 (patch) | |
| tree | d257b75f6232b6da8891997a20eba2b7fce06fb0 /target | |
| parent | 46beb58efbb8a2a32f601a041aa22801a3138ece (diff) | |
| download | qemu-8d4a4dc849a28aded8f335a25b223e8e3391b6f2.zip qemu-8d4a4dc849a28aded8f335a25b223e8e3391b6f2.tar.gz qemu-8d4a4dc849a28aded8f335a25b223e8e3391b6f2.tar.bz2 | |
target/arm: Convert T16, Unconditional branch
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Message-id: 20190904193059.26202-67-richard.henderson@linaro.org
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Diffstat (limited to 'target')
| -rw-r--r-- | target/arm/t16.decode | 6 | ||||
| -rw-r--r-- | target/arm/translate.c | 9 |
2 files changed, 8 insertions, 7 deletions
diff --git a/target/arm/t16.decode b/target/arm/t16.decode index 0b4da41..a4c89db 100644 --- a/target/arm/t16.decode +++ b/target/arm/t16.decode @@ -266,3 +266,9 @@ LDM_t16 1011 110 ......... \ SVC 1101 1111 imm:8 &i B_cond_thumb 1101 cond:4 ........ &ci imm=%imm8_0x2 } + +# Unconditional Branch + +%imm11_0x2 0:s11 !function=times_2 + +B 11100 ........... &i imm=%imm11_0x2 diff --git a/target/arm/translate.c b/target/arm/translate.c index 4f4c77f..3238ccb 100644 --- a/target/arm/translate.c +++ b/target/arm/translate.c @@ -10736,7 +10736,6 @@ static void disas_thumb2_insn(DisasContext *s, uint32_t insn) static void disas_thumb_insn(DisasContext *s, uint32_t insn) { - uint32_t val; int32_t offset; TCGv_i32 tmp; TCGv_i32 tmp2; @@ -10780,12 +10779,8 @@ static void disas_thumb_insn(DisasContext *s, uint32_t insn) gen_bx(s, tmp); break; } - /* unconditional branch */ - val = read_pc(s); - offset = ((int32_t)insn << 21) >> 21; - val += offset << 1; - gen_jmp(s, val); - break; + /* unconditional branch, in decodetree */ + goto illegal_op; case 15: /* thumb_insn_is_16bit() ensures we can't get here for |