freebsd-src/usr.bin/doscmd/cpu.c
John Dyson 90c38ed200 Add our doscmd to the tree. This is a result of work from BSDI, and
a group of dos emulator developers.
Submitted by:	Jonathan Lemon <jlemon@americantv.com>
Obtained from:	BSDI
1997-08-09 01:43:15 +00:00

71 lines
1.6 KiB
C

/*
** No copyright ?!
**
** $Id: cpu.c,v 1.5 1996/09/25 11:05:54 miff Exp $
*/
#include "doscmd.h"
/*
** Hardware /0 interrupt
*/
void
int00(regcontext_t *REGS)
{
debug(D_ALWAYS, "Divide by 0 in DOS program!\n");
exit(1);
}
void
int01(regcontext_t *REGS)
{
debug(D_ALWAYS, "INT 1 with no handler! (single-step/debug)\n");
}
void
int03(regcontext_t *REGS)
{
debug(D_ALWAYS, "INT 3 with no handler! (breakpoint)\n");
}
void
int0d(regcontext_t *REGS)
{
debug(D_ALWAYS, "IRQ5 with no handler!\n");
}
void
cpu_init(void)
{
u_long vec;
vec = insert_hardint_trampoline();
ivec[0x00] = vec;
register_callback(vec, int00, "int 00");
vec = insert_softint_trampoline();
ivec[0x01] = vec;
register_callback(vec, int01, "int 01");
vec = insert_softint_trampoline();
ivec[0x03] = vec;
register_callback(vec, int03, "int 03");
vec = insert_hardint_trampoline();
ivec[0x0d] = vec;
register_callback(vec, int0d, "int 0d");
vec = insert_null_trampoline();
ivec[0x34] = vec; /* floating point emulator */
ivec[0x35] = vec; /* floating point emulator */
ivec[0x36] = vec; /* floating point emulator */
ivec[0x37] = vec; /* floating point emulator */
ivec[0x38] = vec; /* floating point emulator */
ivec[0x39] = vec; /* floating point emulator */
ivec[0x3a] = vec; /* floating point emulator */
ivec[0x3b] = vec; /* floating point emulator */
ivec[0x3c] = vec; /* floating point emulator */
ivec[0x3d] = vec; /* floating point emulator */
ivec[0x3e] = vec; /* floating point emulator */
ivec[0x3f] = vec; /* floating point emulator */
}