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cpu.x86.(32,64).bootstrap: get rid of PUSH malarky 

In the function prologue, move the stack pointer once after the stack frame is set up instead of PUSHing the stack frame piece by piece.
db4
Joe Groff 2011-10-21 10:53:44 -07:00
parent 1a673e30f5
commit 68518e741e
2 changed files with 10 additions and 10 deletions
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10
basis/cpu/x86/32/bootstrap.factor
View File

@ -34,12 +34,12 @@ IN: bootstrap.x86
0 CALL f rc-relative rel-dlsym ;
[
! save stack frame size
stack-frame-size PUSH
! push entry point
0 PUSH rc-absolute-cell rel-this
! store entry point
ESP bootstrap-cell 2 * neg [+] 0 MOV rc-absolute-cell rel-this
! store stack frame size
ESP bootstrap-cell neg [+] stack-frame-size MOV
! alignment
ESP stack-frame-size 3 bootstrap-cells - SUB
ESP stack-frame-size bootstrap-cell - SUB
] jit-prolog jit-define
[

10
basis/cpu/x86/64/bootstrap.factor
View File

@ -36,12 +36,12 @@ IN: bootstrap.x86
[
! load entry point
RAX 0 MOV rc-absolute-cell rel-this
! save stack frame size
stack-frame-size PUSH
! push entry point
RAX PUSH
! store entry point
RSP bootstrap-cell 2 * neg [+] RAX MOV
! store stack frame size
RSP bootstrap-cell neg [+] stack-frame-size MOV
! alignment
RSP stack-frame-size 3 bootstrap-cells - SUB
RSP stack-frame-size bootstrap-cell - SUB
] jit-prolog jit-define
[