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Punt to setcontext() system call if the PSL_T bit (single-step trap) 

is set, so that the single-step trap happens in the thread's context
and not in the middle of _setcontext_u.

XXX might be able to do something here with iret, too, but it needs
more testing.
This commit is contained in:
nathanw 2004-11-30 21:05:01 +00:00
parent c6dfed6dc5
commit 45204d9ceb
1 changed files with 8 additions and 4 deletions
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12
lib/libpthread/arch/i386/_getsetc.S
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@ -1,4 +1,4 @@
/* $NetBSD: _getsetc.S,v 1.4 2004/11/10 01:12:57 kent Exp $ */
/* $NetBSD: _getsetc.S,v 1.5 2004/11/30 21:05:01 nathanw Exp $ */
/*-
* Copyright (c) 2001 The NetBSD Foundation, Inc.
@ -69,10 +69,14 @@
leal -4(%edx), %esp ; \
ret ; \
; \
1: and $_UC_FPU, %eax ; \
jz 2f ; \
1: btl $8, (UC_REGS + _REG_EFL * 4)(%ecx) ; \
jnc 2f ; \
pushl %ecx ; \
call PIC_GOT(_C_LABEL(setcontext)) ; \
2: and $_UC_FPU, %eax ; \
jz 3f ; \
FPLOAD(%ecx) ; \
2: movl (UC_REGS + _REG_GS * 4)(%ecx), %gs ; \
3: movl (UC_REGS + _REG_GS * 4)(%ecx), %gs ; \
movl (UC_REGS + _REG_FS * 4)(%ecx), %fs ; \
movl (UC_REGS + _REG_ES * 4)(%ecx), %es ; \
movl (UC_REGS + _REG_EDI * 4)(%ecx), %edi ; \