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| author | Alan Modra <amodra@gmail.com> | 2019-12-11 16:45:14 +1030 |
|---|---|---|
| committer | Alan Modra <amodra@gmail.com> | 2019-12-11 21:14:19 +1030 |
| commit | 1d61b032265e69317f42e8019e072506f11890c5 (patch) | |
| tree | 226c023afd93046735bb928dc67d6490f8466e97 /opcodes/tilepro-opc.c | |
| parent | 13c9c48599ebc8ad2f3a1fb9f672740219cd3841 (diff) | |
| download | gdb-1d61b032265e69317f42e8019e072506f11890c5.zip gdb-1d61b032265e69317f42e8019e072506f11890c5.tar.gz gdb-1d61b032265e69317f42e8019e072506f11890c5.tar.bz2 | |
Remove more shifts for sign/zero extension
cpu/
* epiphany.cpu (f-sdisp11): Don't sign extend with shifts.
* lm32.cpu (f-branch, f-vall): Likewise.
* m32.cpu (f-lab-8-16): Likewise.
opcodes/
* arc-dis.c (BITS): Don't truncate high bits with shifts.
* nios2-dis.c (nios2_print_insn_arg): Don't sign extend with shifts.
* tic54x-dis.c (print_instruction): Likewise.
* tilegx-opc.c (parse_insn_tilegx): Likewise.
* tilepro-opc.c (parse_insn_tilepro): Likewise.
* visium-dis.c (disassem_class0): Likewise.
* pdp11-dis.c (sign_extend): Likewise.
(SIGN_BITS): Delete.
* epiphany-ibld.c: Regenerate.
* lm32-ibld.c: Regenerate.
* m32c-ibld.c: Regenerate.
Diffstat (limited to 'opcodes/tilepro-opc.c')
| -rw-r--r-- | opcodes/tilepro-opc.c | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/opcodes/tilepro-opc.c b/opcodes/tilepro-opc.c index ea15822..c71da3d 100644 --- a/opcodes/tilepro-opc.c +++ b/opcodes/tilepro-opc.c @@ -10220,8 +10220,8 @@ parse_insn_tilepro (tilepro_bundle_bits bits, if (op->is_signed) { /* Sign-extend the operand. */ - int shift = (int)((sizeof(int) * 8) - op->num_bits); - opval = (opval << shift) >> shift; + unsigned int sign = 1u << (op->num_bits - 1); + opval = ((opval & (sign + sign - 1)) ^ sign) - sign; } /* Adjust PC-relative scaled branch offsets. */ |