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📄 apic_vector.s(6.78 KB)
📄 atpic_vector.s(2.63 KB)
📄 bios.c(19.81 KB)
📄 bioscall.s(3.97 KB)
📄 bpf_jit_machdep.c(13.33 KB)
📄 bpf_jit_machdep.h(11.54 KB)
📄 copyout.c(11.91 KB)
📄 copyout_fast.s(6.35 KB)
📄 db_disasm.c(42.43 KB)
📄 db_interface.c(2.84 KB)
📄 db_trace.c(18.78 KB)
📄 elan-mmcr.c(12.2 KB)
📄 elf_machdep.c(7.52 KB)
📄 exception.s(16.3 KB)
📄 gdb_machdep.c(3.46 KB)
📄 genassym.c(8.88 KB)
📄 geode.c(8.86 KB)
📄 in_cksum.c(12.03 KB)
📄 initcpu.c(22.28 KB)
📄 io.c(1.82 KB)
📄 k6_mem.c(5.23 KB)
📄 locore.s(11.27 KB)
📄 longrun.c(8.97 KB)
📄 machdep.c(85.6 KB)
📄 mem.c(6.46 KB)
📄 minidump_machdep.c(1.93 KB)
📄 minidump_machdep_base.c(8.92 KB)
📄 minidump_machdep_nopae.c(1.7 KB)
📄 minidump_machdep_pae.c(1.72 KB)
📄 mp_clock.c(3.96 KB)
📄 mp_machdep.c(17.51 KB)
📄 mpboot.s(6.56 KB)
📄 npx.c(40.46 KB)
📄 perfmon.c(8.54 KB)
📄 pmap.c(166.3 KB)
📄 pmap_base.c(20.83 KB)
📄 pmap_nopae.c(1.85 KB)
📄 pmap_pae.c(1.89 KB)
📄 prof_machdep.c(11.04 KB)
📄 ptrace_machdep.c(4.76 KB)
📄 sigtramp.s(4.15 KB)
📄 support.s(11.06 KB)
📄 swtch.s(11.14 KB)
📄 sys_machdep.c(20.6 KB)
📄 trap.c(31.29 KB)
📄 uio_machdep.c(4.01 KB)
📄 vm86.c(20.95 KB)
📄 vm86bios.s(4.72 KB)
📄 vm_machdep.c(17.06 KB)

Editing: db_interface.c

/*-
 * Mach Operating System
 * Copyright (c) 1991,1990 Carnegie Mellon University
 * All Rights Reserved.
 *
 * Permission to use, copy, modify and distribute this software and its
 * documentation is hereby granted, provided that both the copyright
 * notice and this permission notice appear in all copies of the
 * software, derivative works or modified versions, and any portions
 * thereof, and that both notices appear in supporting documentation.
 *
 * CARNEGIE MELLON ALLOWS FREE USE OF THIS SOFTWARE IN ITS
 * CONDITION.  CARNEGIE MELLON DISCLAIMS ANY LIABILITY OF ANY KIND FOR
 * ANY DAMAGES WHATSOEVER RESULTING FROM THE USE OF THIS SOFTWARE.
 *
 * Carnegie Mellon requests users of this software to return to
 *
 *  Software Distribution Coordinator  or  Software.Distribution@CS.CMU.EDU
 *  School of Computer Science
 *  Carnegie Mellon University
 *  Pittsburgh PA 15213-3890
 *
 * any improvements or extensions that they make and grant Carnegie the
 * rights to redistribute these changes.
 */

#include <sys/cdefs.h>
__FBSDID("$FreeBSD$");

/*
 * Interface to new debugger.
 */

#include <sys/param.h>
#include <sys/systm.h>
#include <sys/kdb.h>
#include <sys/pcpu.h>
#include <sys/proc.h>

#include <machine/psl.h>

#include <ddb/ddb.h>

/*
 * Read bytes from kernel address space for debugger.
 */
int
db_read_bytes(vm_offset_t addr, size_t size, char *data)
{
	jmp_buf jb;
	void *prev_jb;
	char *src;
	int ret;

prev_jb = kdb_jmpbuf(jb);
	ret = setjmp(jb);
	if (ret == 0) {
		src = (char *)addr;
		while (size-- > 0)
			*data++ = *src++;
	}
	(void)kdb_jmpbuf(prev_jb);
	return (ret);
}

/*
 * Write bytes to kernel address space for debugger.
 */
int
db_write_bytes(vm_offset_t addr, size_t size, char *data)
{
	jmp_buf jb;
	void *prev_jb;
	char *dst;
	int ret;

prev_jb = kdb_jmpbuf(jb);
	ret = setjmp(jb);
	if (ret == 0) {
		dst = (char *)addr;
		while (size-- > 0)
			*dst++ = *data++;
	}
	(void)kdb_jmpbuf(prev_jb);
	return (ret);
}

int
db_segsize(struct trapframe *tfp)
{
	struct proc_ldt *plp;
	struct segment_descriptor *sdp;
	int sel;

if (tfp == NULL)
	    return (32);
	if (tfp->tf_eflags & PSL_VM)
	    return (16);
	sel = tfp->tf_cs & 0xffff;
	if (sel == GSEL(GCODE_SEL, SEL_KPL))
	    return (32);
	/* Rare cases follow.  User mode cases are currently unreachable. */
	if (ISLDT(sel)) {
	    plp = curthread->td_proc->p_md.md_ldt;
	    sdp = (plp != NULL) ? &plp->ldt_sd : &ldt[0].sd;
	} else {
	    sdp = &gdt[PCPU_GET(cpuid) * NGDT].sd;
	}
	return (sdp[IDXSEL(sel)].sd_def32 == 0 ? 16 : 32);
}

void
db_show_mdpcpu(struct pcpu *pc)
{

db_printf("APIC ID      = %d\n", pc->pc_apic_id);
	db_printf("currentldt   = 0x%x\n", pc->pc_currentldt);
	db_printf("trampstk     = 0x%x\n", pc->pc_trampstk);
	db_printf("kesp0        = 0x%x\n", pc->pc_kesp0);
	db_printf("common_tssp  = 0x%x\n", (u_int)pc->pc_common_tssp);
	db_printf("tlb gen      = %u\n", pc->pc_smp_tlb_done);
}

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Editing: db_interface.c

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