Sandipan Das has uploaded this change for review. (
https://gem5-review.googlesource.com/c/public/gem5/+/16622
Change subject: arch-power: Add fixed-point doubleword arithmetic divide
instructions
......................................................................
arch-power: Add fixed-point doubleword arithmetic divide instructions
This adds the following arithmetic instructions:
* Divide Doubleword (divd[o][.])
* Divide Doubleword Unsigned (divdu[o][.])
Change-Id: Iedfa46ee482201a25dbc195ac5cb7f5f5e83c29b
Signed-off-by: Sandipan Das <[email protected]>
---
M src/arch/power/isa/decoder.isa
1 file changed, 24 insertions(+), 0 deletions(-)
diff --git a/src/arch/power/isa/decoder.isa b/src/arch/power/isa/decoder.isa
index b849862..828d150 100644
--- a/src/arch/power/isa/decoder.isa
+++ b/src/arch/power/isa/decoder.isa
@@ -721,6 +721,30 @@
}
}},
true);
+
+ 489: divd({{
+ int64_t src1 = Ra_sd;
+ int64_t src2 = Rb_sd;
+ if ((src1 != INT64_MIN || src2 != -1) && src2 != 0) {
+ Rt = src1 / src2;
+ } else {
+ Rt = 0;
+ setOV = true;
+ }
+ }},
+ true);
+
+ 457: divdu({{
+ uint64_t src1 = Ra;
+ uint64_t src2 = Rb;
+ if (src2 != 0) {
+ Rt = src1 / src2;
+ } else {
+ Rt = 0;
+ setOV = true;
+ }
+ }},
+ true);
}
default: decode XFX_XO {
--
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Gerrit-Project: public/gem5
Gerrit-Branch: master
Gerrit-Change-Id: Iedfa46ee482201a25dbc195ac5cb7f5f5e83c29b
Gerrit-Change-Number: 16622
Gerrit-PatchSet: 1
Gerrit-Owner: Sandipan Das <[email protected]>
Gerrit-MessageType: newchange
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