Date: Fri, 25 Apr 2003 16:04:06 -0700 (PDT) From: Peter Wemm <peter@FreeBSD.org> To: Perforce Change Reviews <perforce@freebsd.org> Subject: PERFORCE change 29746 for review Message-ID: <200304252304.h3PN4658011543@repoman.freebsd.org>
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http://perforce.freebsd.org/chv.cgi?CH=29746 Change 29746 by peter@peter_daintree on 2003/04/25 16:03:09 use PCB_FULLCTX to cause fast_syscall to restore a full frame via doreti. eg: in response to *context or sigreturn(2). Affected files ... .. //depot/projects/hammer/sys/x86_64/x86_64/exception.s#28 edit .. //depot/projects/hammer/sys/x86_64/x86_64/machdep.c#84 edit Differences ... ==== //depot/projects/hammer/sys/x86_64/x86_64/exception.s#28 (text+ko) ==== @@ -227,6 +227,9 @@ movq PCPU(SCRATCH_RSP),%r12 /* %r12 already saved */ movq %r12,TF_RSP(%rsp) /* user stack pointer */ call syscall + movq PCPU(CURPCB),%rax + testq $PCB_FULLCTX,PCB_FLAGS(%rax) + jnz doreti_ast /* simplified from doreti */ 1: /* Check for and handle AST's on return to userland */ cli ==== //depot/projects/hammer/sys/x86_64/x86_64/machdep.c#84 (text+ko) ==== @@ -384,6 +384,7 @@ SIG_CANTMASK(td->td_sigmask); signotify(td); PROC_UNLOCK(p); + td->td_pcb->pcb_flags |= PCB_FULLCTX; return (EJUSTRETURN); }
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