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Do something sensible with interrupt frames.

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This commit is contained in:
mycroft 1994-10-09 14:37:54 +00:00
parent aef750bbec
commit 5d0226231f
1 changed files with 43 additions and 18 deletions
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61
sys/arch/i386/i386/db_trace.c
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@ -23,7 +23,7 @@
* any improvements or extensions that they make and grant Carnegie the
* rights to redistribute these changes.
*
* $Id: db_trace.c,v 1.10 1994/10/09 13:48:40 mycroft Exp $
* $Id: db_trace.c,v 1.11 1994/10/09 14:37:54 mycroft Exp $
*/
#include <sys/param.h>
@ -67,9 +67,10 @@ struct i386_frame {
int f_arg0;
};
#define NONE 0
#define TRAP 1
#define INTERRUPT 2
#define SYSCALL 3
#define SYSCALL 2
#define INTERRUPT 3
db_addr_t db_trap_symbol_value = 0;
db_addr_t db_syscall_symbol_value = 0;
@ -136,7 +137,7 @@ db_nextframe(fp, ip, argp, is_trap)
{
switch (is_trap) {
case 0:
case NONE:
*ip = (db_addr_t)
db_get_value((int) &(*fp)->f_retaddr, 4, FALSE);
*fp = (struct i386_frame *)
@ -144,8 +145,7 @@ db_nextframe(fp, ip, argp, is_trap)
break;
case SYSCALL:
case TRAP:
default: {
case TRAP: {
struct trapframe *tf;
/* The only argument to trap() or syscall() is the trapframe. */
@ -159,6 +159,20 @@ db_nextframe(fp, ip, argp, is_trap)
*ip = (db_addr_t)tf->tf_eip;
break;
}
case INTERRUPT: {
struct intrframe *if;
/* We fudged the frame pointer in the interrupt handler so we
could do this. */
if = (struct intrframe *)argp;
db_printf("--- interrupt ---\n");
db_printsym(if->if_eip, DB_STGY_XTRN);
db_printf(":\n");
*fp = (struct i386_frame *)if->if_ebp;
*ip = (db_addr_t)if->if_eip;
break;
}
}
}
@ -231,19 +245,30 @@ db_stack_trace_cmd(addr, have_addr, count, modif)
offset = 0;
}
}
#define STRCMP(s1,s2) ((s1) && (s2) && strcmp((s1), (s2)) == 0)
if (INKERNEL((int)frame) && STRCMP(name, "_trap")) {
narg = 1;
is_trap = TRAP;
} else if (INKERNEL((int)frame) && STRCMP(name, "_kdintr")) {
is_trap = INTERRUPT;
narg = 0;
} else if (INKERNEL((int)frame) && STRCMP(name, "_syscall")) {
is_trap = SYSCALL;
narg = 0;
if (INKERNEL((int)frame) && name) {
if (!strcmp(name, "_trap")) {
is_trap = TRAP;
narg = 1;
} else if (!strcmp(name, "_syscall")) {
is_trap = SYSCALL;
narg = 1;
} else if (name[0] == '_' && name[1] == 'X') {
if (!strncmp(name, "_Xintr", 6) ||
!strncmp(name, "_Xresume", 8) ||
!strncmp(name, "_Xstray", 7) ||
!strncmp(name, "_Xhold", 6) ||
!strncmp(name, "_Xrecurse", 9) ||
!strcmp(name, "_Xdoreti") ||
!strncmp(name, "_Xsoft", 6)) {
is_trap = INTERRUPT;
narg = 0;
} else
goto normal;
} else
goto normal;
} else {
#undef STRCMP
is_trap = 0;
normal:
is_trap = NONE;
narg = MAXNARG;
if (db_sym_numargs(sym, &narg, argnames))
argnp = argnames;