Sandipan Das has uploaded this change for review. (
https://gem5-review.googlesource.com/c/public/gem5/+/16612
Change subject: arch-power: Add fixed-point store conditional instructions
......................................................................
arch-power: Add fixed-point store conditional instructions
This adds the following store instructions:
* Store Byte Conditional Indexed (stbcx.)
* Store Halfword Conditional Indexed (sthcx.)
* Store Doubleword Conditional Indexed (stdcx.)
Change-Id: I065113e817e2ae419a6f3231e645bacd95460607
Signed-off-by: Sandipan Das <[email protected]>
---
M src/arch/power/isa/decoder.isa
1 file changed, 48 insertions(+), 0 deletions(-)
diff --git a/src/arch/power/isa/decoder.isa b/src/arch/power/isa/decoder.isa
index 07aa73c..a85cefa 100644
--- a/src/arch/power/isa/decoder.isa
+++ b/src/arch/power/isa/decoder.isa
@@ -294,7 +294,39 @@
format StoreIndexOp {
215: stbx({{ Mem_ub = Rs_ub; }});
+ 694: stbcx({{
+ bool store_performed = false;
+ Mem_ub = Rs_ub;
+ if (Rsv) {
+ if (RsvLen == 1) {
+ if (RsvAddr == EA) {
+ store_performed = true;
+ }
+ }
+ }
+ Xer xer = XER;
+ Cr cr = CR;
+ cr.cr0 = ((store_performed ? 0x2 : 0x0) | xer.so);
+ CR = cr;
+ Rsv = 0;
+ }});
407: sthx({{ Mem_uh = Rs_uh; }});
+ 726: sthcx({{
+ bool store_performed = false;
+ Mem_uh = Rs_uh;
+ if (Rsv) {
+ if (RsvLen == 2) {
+ if (RsvAddr == EA) {
+ store_performed = true;
+ }
+ }
+ }
+ Xer xer = XER;
+ Cr cr = CR;
+ cr.cr0 = ((store_performed ? 0x2 : 0x0) | xer.so);
+ CR = cr;
+ Rsv = 0;
+ }});
918: sthbrx({{ Mem_uh = swap_byte(Rs_uh); }});
151: stwx({{ Mem_uw = Rs_uw; }});
150: stwcx({{
@@ -315,6 +347,22 @@
}});
662: stwbrx({{ Mem_uw = swap_byte(Rs_uw); }});
149: stdx({{ Mem = Rs }});
+ 214: stdcx({{
+ bool store_performed = false;
+ Mem = Rs;
+ if (Rsv) {
+ if (RsvLen == 8) {
+ if (RsvAddr == EA) {
+ store_performed = true;
+ }
+ }
+ }
+ Xer xer = XER;
+ Cr cr = CR;
+ cr.cr0 = ((store_performed ? 0x2 : 0x0) | xer.so);
+ CR = cr;
+ Rsv = 0;
+ }});
660: stdbrx({{ Mem = swap_byte(Rs); }});
}
--
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Gerrit-Project: public/gem5
Gerrit-Branch: master
Gerrit-Change-Id: I065113e817e2ae419a6f3231e645bacd95460607
Gerrit-Change-Number: 16612
Gerrit-PatchSet: 1
Gerrit-Owner: Sandipan Das <[email protected]>
Gerrit-MessageType: newchange
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