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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 /cpu/epiphany.cpu | |
| 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 'cpu/epiphany.cpu')
| -rw-r--r-- | cpu/epiphany.cpu | 9 |
1 files changed, 5 insertions, 4 deletions
diff --git a/cpu/epiphany.cpu b/cpu/epiphany.cpu index 9f873b3..02bce07 100644 --- a/cpu/epiphany.cpu +++ b/cpu/epiphany.cpu @@ -228,10 +228,11 @@ (set (ifield f-disp3) (and SI (ifield f-sdisp11) 7))) (sequence () ;decode (set (ifield f-sdisp11) - (sra SI (sll SI (or SI (sll (ifield f-disp8) 3) - (ifield f-disp3)) - 21) - 21))) + (sub SI (xor (and (or (sll (ifield f-disp8) 3) + (ifield f-disp3)) + #x7ff) + #x400) + #x400))) ) (dnmf f-imm16 "Short immediate for move/add/sub" () UINT (f-imm8 f-imm-27-8) |