X86: Implement a locking version of XADD.

2009-04-19 04:56:49 -07:00 · 2009-04-19 04:56:49 -07:00 · 61edc9ba66
parent 209cfc89fd
commit 61edc9ba66
1 changed files with 15 additions and 0 deletions
--- a/src/arch/x86/isa/insts/general_purpose/semaphores.py
+++ b/src/arch/x86/isa/insts/general_purpose/semaphores.py
@ -113,6 +113,21 @@ def macroop XADD_P_R {
    mov reg, reg, t1
 };

+def macroop XADD_LOCKED_M_R {
+    ldstl t1, seg, sib, disp
+    add t2, t1, reg, flags=(OF,SF,ZF,AF,PF,CF)
+    stul t2, seg, sib, disp
+    mov reg, reg, t1
+};
+
+def macroop XADD_LOCKED_P_R {
+    rdip t7
+    ldstl t1, seg, riprel, disp
+    add t2, t1, reg, flags=(OF,SF,ZF,AF,PF,CF)
+    stul t2, seg, riprel, disp
+    mov reg, reg, t1
+};
+
 def macroop XADD_R_R {
    add t2, regm, reg, flags=(OF,SF,ZF,AF,PF,CF)
    mov regm, regm, reg