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cpu.x86.64: also must save ctx-reg

db4
Joe Groff 2011-10-26 20:48:29 -07:00
parent 331e4264b3
commit c70a1004f8
1 changed files with 8 additions and 3 deletions
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11
basis/cpu/x86/64/bootstrap.factor
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@ -91,11 +91,16 @@ IN: bootstrap.x86
"end_callback" jit-call
] \ c-to-factor define-sub-primitive
! In addition to the C ABI volatile regs, we also whack R12
! when we save context before calling the signal handler.
: signal-handler-save-regs ( -- regs ) volatile-regs R12 suffix ;
:: jit-signal-handler-prolog ( -- frame-size )
! do we also need to save XMM?
volatile-regs length bootstrap-cells 16 align stack-frame-size + :> frame-size
signal-handler-save-regs :> save-regs
save-regs length bootstrap-cells 16 align stack-frame-size + :> frame-size
RSP frame-size bootstrap-cell - SUB ! minus a cell for return address
volatile-regs
save-regs
[| r i | RSP i bootstrap-cells [+] r MOV ] each-index
! Now that the registers are saved, we can make the stack frame
RAX 0 MOV rc-absolute-cell rel-this
@ -104,7 +109,7 @@ IN: bootstrap.x86
frame-size ;
:: jit-signal-handler-epilog ( frame-size -- )
volatile-regs
signal-handler-save-regs
[| r i | r RSP i bootstrap-cells [+] MOV ] each-index
RSP frame-size bootstrap-cell - ADD ;