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| author | Stafford Horne <shorne@gmail.com> | 2019-06-13 06:16:19 +0900 |
|---|---|---|
| committer | Stafford Horne <shorne@gmail.com> | 2019-06-13 06:16:19 +0900 |
| commit | d3ad6278d6b977cfeb3156b65862224899549c76 (patch) | |
| tree | 099ecb4f073447a6f1208a76285505f1bf73d60e /cpu/ChangeLog | |
| parent | 6ce26ac7c381c78858b9a7bac344b5cd04bfb03e (diff) | |
| download | gdb-d3ad6278d6b977cfeb3156b65862224899549c76.zip gdb-d3ad6278d6b977cfeb3156b65862224899549c76.tar.gz gdb-d3ad6278d6b977cfeb3156b65862224899549c76.tar.bz2 | |
cpu/or1k: Define unordered comparisons
Add support for new floating point unordered comparisons. These have been
defined in OpenRISC architecture proposal 7[0] and are now included in the
architecture specification 1.3.
These new instructions provide the ability for floating point comparisons to
detect NaNs.
[0] https://openrisc.io/proposals/lfsf
cpu/ChangeLog:
yyyy-mm-dd Stafford Horne <shorne@gmail.com>
* or1korfpx.cpu (insn-opcode-float-regreg): Add SFUEQ_S, SFUNE_S,
SFUGT_S, SFUGE_S, SFULT_S, SFULE_S, SFUN_S, SFUEQ_D, SFUNE_D, SFUGT_D,
SFUGE_D, SFULT_D, SFULE_D, SFUN_D opcodes.
(float-setflag-insn-base): New pmacro based on float-setflag-insn.
(float-setflag-symantics, float-setflag-unordered-cmp-symantics,
float-setflag-unordered-symantics): New pmacro for instruction
symantics.
(float-setflag-insn): Update to use float-setflag-insn-base.
(float-setflag-unordered-insn): New pmacro for generating instructions.
Diffstat (limited to 'cpu/ChangeLog')
| -rw-r--r-- | cpu/ChangeLog | 12 |
1 files changed, 12 insertions, 0 deletions
diff --git a/cpu/ChangeLog b/cpu/ChangeLog index cd35e7e..7f141af 100644 --- a/cpu/ChangeLog +++ b/cpu/ChangeLog @@ -1,3 +1,15 @@ +2019-06-13 Stafford Horne <shorne@gmail.com> + + * or1korfpx.cpu (insn-opcode-float-regreg): Add SFUEQ_S, SFUNE_S, + SFUGT_S, SFUGE_S, SFULT_S, SFULE_S, SFUN_S, SFUEQ_D, SFUNE_D, SFUGT_D, + SFUGE_D, SFULT_D, SFULE_D, SFUN_D opcodes. + (float-setflag-insn-base): New pmacro based on float-setflag-insn. + (float-setflag-symantics, float-setflag-unordered-cmp-symantics, + float-setflag-unordered-symantics): New pmacro for instruction + symantics. + (float-setflag-insn): Update to use float-setflag-insn-base. + (float-setflag-unordered-insn): New pmacro for generating instructions. + 2019-06-13 Andrey Bacherov <avbacherov@opencores.org> Stafford Horne <shorne@gmail.com> |