cpu.x86.64: callback prologue was clobbering 5th parameter register on x86-64

[factor.git] / basis / cpu / x86 / 64 / 64.factor

diff --git a/basis/cpu/x86/64/64.factor b/basis/cpu/x86/64/64.factor
index ad4fc626f15d3d92f7eeca2cae25aaaf9a7eec10..bde0507af971b746dde6b9139788e889641c0250 100644 (file)
--- a/basis/cpu/x86/64/64.factor
+++ b/basis/cpu/x86/64/64.factor
@@ -58,14 +58,10 @@ M: x86.64 %set-vm-field ( src offset -- )
 M: x86.64 %vm-field-ptr ( dst offset -- )
     [ vm-reg ] dip [+] LEA ;
 
-! Must be a volatile register not used for parameter passing or
-! integer return
-HOOK: temp-reg cpu ( -- reg )
-
 M: x86.64 %prologue ( n -- )
-    temp-reg -7 [RIP+] LEA
+    R11 -7 [RIP+] LEA
     dup PUSH
-    temp-reg PUSH
+    R11 PUSH
     stack-reg swap 3 cells - SUB ;
 
 M: x86.64 %prepare-jump