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Add two new debugging tunables for x86bios instead of abusing bootverbose,

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i.e., debug.x86bios.call and debug.x86bios.int.
This commit is contained in:
jkim 2009-12-15 22:44:28 +00:00
parent 0b02c03e54
commit ddc390f24b
1 changed files with 15 additions and 4 deletions
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19
sys/compat/x86bios/x86bios.c
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@ -38,6 +38,7 @@ __FBSDID("$FreeBSD$");
#include <sys/module.h>
#include <sys/mutex.h>
#include <sys/proc.h>
#include <sys/sysctl.h>
#include <contrib/x86emu/x86emu.h>
#include <contrib/x86emu/x86emu_regs.h>
@ -80,6 +81,16 @@ static vm_offset_t *x86bios_map;
static vm_paddr_t x86bios_seg_phys;
SYSCTL_NODE(_debug, OID_AUTO, x86bios, CTLFLAG_RD, NULL, "x86bios debugging");
static int x86bios_trace_call;
TUNABLE_INT("debug.x86bios.call", &x86bios_trace_call);
SYSCTL_INT(_debug_x86bios, OID_AUTO, call, CTLFLAG_RW, &x86bios_trace_call, 0,
"Trace far function calls");
static int x86bios_trace_int;
TUNABLE_INT("debug.x86bios.int", &x86bios_trace_int);
SYSCTL_INT(_debug_x86bios, OID_AUTO, int, CTLFLAG_RW, &x86bios_trace_int, 0,
"Trace software interrupt handlers");
static void *
x86bios_get_pages(uint32_t offset, size_t size)
{
@ -312,7 +323,7 @@ x86bios_call(struct x86regs *regs, uint16_t seg, uint16_t off)
if (x86bios_map == NULL)
return;
if (bootverbose)
if (x86bios_trace_call)
printf("Calling 0x%05x (ax=0x%04x bx=0x%04x "
"cx=0x%04x dx=0x%04x es=0x%04x di=0x%04x)\n",
(seg << 4) + off, regs->R_AX, regs->R_BX, regs->R_CX,
@ -324,7 +335,7 @@ x86bios_call(struct x86regs *regs, uint16_t seg, uint16_t off)
memcpy(regs, &x86bios_emu.x86, sizeof(*regs));
mtx_unlock_spin(&x86bios_lock);
if (bootverbose)
if (x86bios_trace_call)
printf("Exiting 0x%05x (ax=0x%04x bx=0x%04x "
"cx=0x%04x dx=0x%04x es=0x%04x di=0x%04x)\n",
(seg << 4) + off, regs->R_AX, regs->R_BX, regs->R_CX,
@ -351,7 +362,7 @@ x86bios_intr(struct x86regs *regs, int intno)
if (x86bios_map == NULL)
return;
if (bootverbose)
if (x86bios_trace_int)
printf("Calling int 0x%x (ax=0x%04x bx=0x%04x "
"cx=0x%04x dx=0x%04x es=0x%04x di=0x%04x)\n",
intno, regs->R_AX, regs->R_BX, regs->R_CX,
@ -363,7 +374,7 @@ x86bios_intr(struct x86regs *regs, int intno)
memcpy(regs, &x86bios_emu.x86, sizeof(*regs));
mtx_unlock_spin(&x86bios_lock);
if (bootverbose)
if (x86bios_trace_int)
printf("Exiting int 0x%x (ax=0x%04x bx=0x%04x "
"cx=0x%04x dx=0x%04x es=0x%04x di=0x%04x)\n",
intno, regs->R_AX, regs->R_BX, regs->R_CX,