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Code Releases Activity

fix signal trampoline

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save and use the program counter on stack
removes race condition in trampoline
also push/pop full memory words explicitly
This commit is contained in:
Ludwig Ortmann 2014-01-20 22:25:52 +01:00
parent d81261d035
commit 7789bbca16
1 changed files with 14 additions and 10 deletions
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24
cpu/native/tramp.S
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@ -3,8 +3,9 @@
#ifdef __MACH__
.globl __native_sig_leave_tramp
__native_sig_leave_tramp:
pushf
pusha
pushl __native_saved_eip
pushfl
pushal
pushl __native_isr_ctx
pushl __native_cur_ctx
@ -14,10 +15,11 @@ __native_sig_leave_tramp:
call _eINT
movl $0x0, __native_in_isr
popa
popf
popal
popfl
jmp *__native_saved_eip
popl __native_saved_eip
jmp *-4(%esp)
#else
.extern $_native_saved_eip
.extern $_native_isr_ctx
@ -27,8 +29,9 @@ __native_sig_leave_tramp:
.globl _native_sig_leave_tramp
_native_sig_leave_tramp:
pushf
pusha
pushl _native_saved_eip
pushfl
pushal
pushl _native_isr_ctx
pushl _native_cur_ctx
@ -38,8 +41,9 @@ _native_sig_leave_tramp:
call eINT
movl $0x0, _native_in_isr
popa
popf
popal
popfl
jmp *_native_saved_eip
popl _native_saved_eip
jmp *-4(%esp)
#endif