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2003-01-31 Michael Snyder <msnyder@redhat.com>

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* libc/sys/h8300hms/_exit.c (_exit, __exit):  Slip a magic cookie
	into registers r1 and r2, so that the simulator can distinguish
	this trap from a breakpoint trap.  Copied from libgloss.
This commit is contained in:
Jeff Johnston
2003-01-31 20:44:26 +00:00
parent b85498d44c
commit a74181ee01
2 changed files with 20 additions and 2 deletions
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6
newlib/ChangeLog
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@@ -1,3 +1,9 @@
2003-01-31 Michael Snyder <msnyder@redhat.com>
* libc/sys/h8300hms/_exit.c (_exit, __exit): Slip a magic cookie
into registers r1 and r2, so that the simulator can distinguish
this trap from a breakpoint trap. Copied from libgloss.
2003-01-31 Michael Snyder <msnyder@redhat.com> 2003-01-31 Michael Snyder <msnyder@redhat.com>
* libc/sys/h8300hms/crt0.S (_start): Change local label * libc/sys/h8300hms/crt0.S (_start): Change local label

16
newlib/libc/sys/h8300hms/_exit.c
View File

@@ -10,7 +10,13 @@ void
_DEFUN (_exit,(rc), _DEFUN (_exit,(rc),
int rc) int rc)
{ {
short rc2 = rc << 8; short rc2;
rc2 = 0xdead;
asm("mov.w %0,r1" : : "r" (rc2) : "r1");
rc2 = 0xbeef;
asm("mov.w %0,r2" : : "r" (rc2) : "r2");
rc2 = rc << 8;
asm("mov.w %0,r0\n\tsleep" : : "r" (rc2) : "r0"); asm("mov.w %0,r0\n\tsleep" : : "r" (rc2) : "r0");
} }
@@ -18,6 +24,12 @@ void
_DEFUN (__exit,(rc), _DEFUN (__exit,(rc),
int rc) int rc)
{ {
short rc2 = rc << 8; short rc2;
rc2 = 0xdead;
asm("mov.w %0,r1" : : "r" (rc2) : "r1");
rc2 = 0xbeef;
asm("mov.w %0,r2" : : "r" (rc2) : "r2");
rc2 = rc << 8;
asm("mov.w %0,r0\n\tsleep" : : "r" (rc2) : "r0"); asm("mov.w %0,r0\n\tsleep" : : "r" (rc2) : "r0");
} }