diff options
Diffstat (limited to 'sys/arch/i386/i386/db_interface.c')
| -rw-r--r-- | sys/arch/i386/i386/db_interface.c | 53 |
1 files changed, 52 insertions, 1 deletions
diff --git a/sys/arch/i386/i386/db_interface.c b/sys/arch/i386/i386/db_interface.c index edaa3d6fd42..c9d55df065e 100644 --- a/sys/arch/i386/i386/db_interface.c +++ b/sys/arch/i386/i386/db_interface.c @@ -1,4 +1,4 @@ -/* $OpenBSD: db_interface.c,v 1.11 2002/03/14 01:26:32 millert Exp $ */ +/* $OpenBSD: db_interface.c,v 1.12 2003/05/18 02:43:12 andreas Exp $ */ /* $NetBSD: db_interface.c,v 1.22 1996/05/03 19:42:00 christos Exp $ */ /* @@ -57,6 +57,7 @@ extern int trap_types; int db_active = 0; void kdbprinttrap(int, int); +void db_sysregs_cmd(db_expr_t, int, db_expr_t, char *); /* * Print trap reason. @@ -141,6 +142,56 @@ kdb_trap(type, code, regs) } void +db_sysregs_cmd(addr, have_addr, count, modif) + db_expr_t addr; + int have_addr; + db_expr_t count; + char *modif; +{ + int64_t idtr, gdtr; + uint32_t cr; + uint16_t ldtr, tr; + + __asm__ __volatile__("sidt %0" : "=m" (idtr)); + db_printf("idtr: 0x%08x/%04x\n", + (unsigned int)(idtr >> 16), idtr & 0xffff); + + __asm__ __volatile__("sgdt %0" : "=m" (gdtr)); + db_printf("gdtr: 0x%08x/%04x\n", + (unsigned int)(gdtr >> 16), gdtr & 0xffff); + + __asm__ __volatile__("sldt %0" : "=g" (ldtr)); + db_printf("ldtr: 0x%04x\n", ldtr); + + __asm__ __volatile__("str %0" : "=g" (tr)); + db_printf("tr: 0x%04x\n", tr); + + __asm__ __volatile__("movl %%cr0,%0" : "=r" (cr)); + db_printf("cr0: 0x%08x\n", cr); + + __asm__ __volatile__("movl %%cr2,%0" : "=r" (cr)); + db_printf("cr2: 0x%08x\n", cr); + + __asm__ __volatile__("movl %%cr3,%0" : "=r" (cr)); + db_printf("cr3: 0x%08x\n", cr); + + __asm__ __volatile__("movl %%cr4,%0" : "=r" (cr)); + db_printf("cr4: 0x%08x\n", cr); +} + +struct db_command db_machine_command_table[] = { + { "sysregs", db_sysregs_cmd, 0, 0 }, + { (char *)0, } +}; + +void +db_machine_init() +{ + + db_machine_commands_install(db_machine_command_table); +} + +void Debugger() { asm("int $3"); |