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Compute value of ssp correctly.

This commit is contained in:
gwr 1995-05-24 20:23:05 +00:00
parent e7f3fdcd35
commit 31870d2eec
1 changed files with 20 additions and 14 deletions
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34
sys/arch/m68k/m68k/db_interface.c
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@ -1,4 +1,4 @@
/* $NetBSD: db_interface.c,v 1.14 1995/02/13 00:44:33 chopps Exp $ */
/* $NetBSD: db_interface.c,v 1.15 1995/05/24 20:23:05 gwr Exp $ */
/*
* Mach Operating System
@ -40,6 +40,7 @@
#include <machine/trap.h>
#include <machine/db_machdep.h>
short exframesize[];
extern jmp_buf *db_recover;
int db_active = 0;
@ -65,6 +66,8 @@ kdb_trap(type, regs)
int type;
register struct mc68020_saved_state *regs;
{
int fsize;
switch (type) {
case T_TRACE: /* single-step */
case T_BREAKPOINT: /* breakpoint */
@ -88,15 +91,16 @@ kdb_trap(type, regs)
/* Get System Stack Pointer (SSP) */
ddb_regs_ssp = (int)(&regs[1]);
fsize = exframesize[regs->stkfmt];
if (fsize > 0)
ddb_regs_ssp += fsize;
db_active++;
cnpollc(TRUE);
#if 0
/* XXX - Should do this in cnpollc() if needed. */
(void) setvideoenable(1);
#endif
db_trap(type, 0);
cnpollc(FALSE);
cnpollc(TRUE); /* set polling mode, unblank video */
db_trap(type, 0); /* where the work happens */
cnpollc(FALSE); /* resume interrupt mode */
db_active--;
/* Can't easily honor change in ssp. Oh well. */
@ -109,12 +113,14 @@ kdb_trap(type, regs)
* trace bit in the current SR (and trapping while exiting KDB).
*/
(void) spl7();
/* if (!USERMODE(regs->sr) && (regs->sr & SR_T1) && (current_thread())) {
#if 0
if (!USERMODE(regs->sr) && (regs->sr & SR_T1) && (current_thread())) {
current_thread()->pcb->pcb_flag |= TRACE_KDB;
}*/
/* if ((regs->sr & SR_T1) && (current_thread())) {
}
if ((regs->sr & SR_T1) && (current_thread())) {
current_thread()->pcb->flag |= TRACE_KDB;
}*/
}
#endif
return(1);
}
@ -147,7 +153,7 @@ Debugger()
/*
* Read bytes from kernel address space for debugger.
* XXX - Each port should provide one of these...
* See arch/sun3/sun3/db_memrw.c for an example. -gwr
* (See arch/sun3/sun3/db_machdep.c for example.)
*/
void
db_read_bytes(addr, size, data)
@ -165,7 +171,7 @@ db_read_bytes(addr, size, data)
/*
* Write bytes to kernel address space for debugger.
* XXX - Each port should provide one of these...
* See arch/sun3/sun3/db_memrw.c for an example. -gwr
* (See arch/sun3/sun3/db_machdep.c for example.)
*/
void
db_write_bytes(addr, size, data)