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📄 autoconf.c(3.3 KB)
📄 bcopy_page.S(4.14 KB)
📄 bcopyinout.S(3.35 KB)
📄 bcopyinout_xscale.S(19.19 KB)
📄 blockio.S(13.19 KB)
📄 bus_space_asm_generic.S(5.43 KB)
📄 bus_space_base.c(4.8 KB)
📄 bus_space_generic.c(4.1 KB)
📄 busdma_machdep.c(50.91 KB)
📄 copystr.S(3.29 KB)
📄 cpu_asm-v6.S(7.88 KB)
📄 cpufunc.c(8.69 KB)
📄 cpufunc_asm.S(2.53 KB)
📄 cpufunc_asm_arm11x6.S(3.5 KB)
📄 cpufunc_asm_armv7.S(1.82 KB)
📄 cpufunc_asm_pj4b.S(3.47 KB)
📄 cpuinfo.c(14.82 KB)
📄 db_disasm.c(2.58 KB)
📄 db_interface.c(7.03 KB)
📄 db_trace.c(4.69 KB)
📄 debug_monitor.c(24 KB)
📄 disassem.c(20.16 KB)
📄 dump_machdep.c(2.95 KB)
📄 elf_machdep.c(8.8 KB)
📄 elf_note.S(1.56 KB)
📄 exception.S(14.21 KB)
📄 fiq.c(4.69 KB)
📄 fiq_subr.S(2.77 KB)
📄 fusu.S(5.61 KB)
📄 gdb_machdep.c(3.62 KB)
📄 genassym.c(5.29 KB)
📄 generic_timer.c(13.62 KB)
📄 gic.c(32.64 KB)
📄 gic.h(2.64 KB)
📄 gic_acpi.c(9.14 KB)
📄 gic_common.h(4.19 KB)
📄 gic_fdt.c(9.69 KB)
📄 hypervisor-stub.S(2.61 KB)
📄 identcpu-v6.c(10.16 KB)
📄 in_cksum.c(4.23 KB)
📄 in_cksum_arm.S(6.87 KB)
📄 locore-v6.S(14.28 KB)
📄 locore.S(1.63 KB)
📄 machdep.c(23.79 KB)
📄 machdep_boot.c(12.48 KB)
📄 machdep_intr.c(7.63 KB)
📄 machdep_kdb.c(3.77 KB)
📄 machdep_ptrace.c(8.1 KB)
📄 mem.c(5.03 KB)
📄 minidump_machdep.c(8.77 KB)
📄 mp_machdep.c(8.58 KB)
📄 mpcore_timer.c(15.71 KB)
📄 mpcore_timervar.h(2.03 KB)
📄 nexus.c(11.33 KB)
📄 nexusvar.h(1.54 KB)
📄 ofw_machdep.c(2.28 KB)
📄 pl190.c(7.63 KB)
📄 pl310.c(16.9 KB)
📄 platform.c(5.31 KB)
📄 platform_if.m(4.14 KB)
📄 platform_pl310_if.m(2.44 KB)
📄 pmap-v6.c(187.97 KB)
📄 pmu.c(3.98 KB)
📄 pmu.h(1.8 KB)
📄 pmu_fdt.c(5.87 KB)
📄 ptrace_machdep.c(1.89 KB)
📄 sc_machdep.c(2.21 KB)
📄 setcpsr.S(2.52 KB)
📄 setstack.s(3.16 KB)
📄 stack_machdep.c(2.65 KB)
📄 stdatomic.c(13.88 KB)
📄 support.S(51.78 KB)
📄 swtch-v6.S(13.07 KB)
📄 swtch.S(4.68 KB)
📄 sys_machdep.c(5.24 KB)
📄 syscall.c(5.54 KB)
📄 trap-v6.c(19.14 KB)
📄 uio_machdep.c(3.95 KB)
📄 undefined.c(9.07 KB)
📄 unwind.c(16.62 KB)
📄 vfp.c(9.1 KB)
📄 vm_machdep.c(8.38 KB)

Editing: gdb_machdep.c

/*-
 * SPDX-License-Identifier: BSD-2-Clause-FreeBSD
 *
 * Copyright (c) 2006 Olivier Houchard
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 *
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in the
 *    documentation and/or other materials provided with the distribution.
 *
 * THIS SOFTWARE IS PROVIDED BY THE AUTHORS ``AS IS'' AND ANY EXPRESS OR
 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
 * IN NO EVENT SHALL THE AUTHORS BE LIABLE FOR ANY DIRECT, INDIRECT,
 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 */

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

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

#include <machine/gdb_machdep.h>
#include <machine/db_machdep.h>
#include <machine/vmparam.h>
#include <machine/pcb.h>
#include <machine/trap.h>
#include <machine/frame.h>
#include <machine/endian.h>

#include <gdb/gdb.h>

static register_t stacktest;

void *
gdb_cpu_getreg(int regnum, size_t *regsz)
{

*regsz = gdb_cpu_regsz(regnum);

if (kdb_thread == curthread) {
		if (regnum < 13)
			return (&kdb_frame->tf_r0 + regnum);
		if (regnum == 13)
			return (&kdb_frame->tf_svc_sp);
		if (regnum == 14)
			return (&kdb_frame->tf_svc_lr);
		if (regnum == 15)
			return (&kdb_frame->tf_pc);
		if (regnum == 25)
			return (&kdb_frame->tf_spsr);
	}

switch (regnum) {
	case 4:  return (&kdb_thrctx->pcb_regs.sf_r4);
	case 5:  return (&kdb_thrctx->pcb_regs.sf_r5);
	case 6:  return (&kdb_thrctx->pcb_regs.sf_r6);
	case 7:  return (&kdb_thrctx->pcb_regs.sf_r7);
	case 8:  return (&kdb_thrctx->pcb_regs.sf_r8);
	case 9:  return (&kdb_thrctx->pcb_regs.sf_r9);
	case 10:  return (&kdb_thrctx->pcb_regs.sf_r10);
	case 11:  return (&kdb_thrctx->pcb_regs.sf_r11);
	case 12:  return (&kdb_thrctx->pcb_regs.sf_r12);
	case 13:  stacktest = kdb_thrctx->pcb_regs.sf_sp + 5 * 4;
		  return (&stacktest);
	case 15:
		  /*
		   * On context switch, the PC is not put in the PCB, but
		   * we can retrieve it from the stack.
		   */
		  if (kdb_thrctx->pcb_regs.sf_sp > KERNBASE) {
			  kdb_thrctx->pcb_regs.sf_pc = *(register_t *)
			      (kdb_thrctx->pcb_regs.sf_sp + 4 * 4);
			  return (&kdb_thrctx->pcb_regs.sf_pc);
		  }
	}

return (NULL);
}

void
gdb_cpu_setreg(int regnum, void *val)
{
	if (kdb_thread != curthread)
		return;

switch (regnum) {
	case GDB_REG_PC:
		kdb_frame->tf_pc = *(register_t *)val;
		break;
	case GDB_REG_SP:
		kdb_frame->tf_svc_sp = *(register_t *)val;
		break;
	case GDB_REG_LR:
		kdb_frame->tf_svc_lr = *(register_t *)val;
		break;
	default:
		/* Write to the general purpose registers r0-r12. */
		if (regnum >= 0 && regnum <= 12) {
			*(&kdb_frame->tf_r0 + regnum) = *(register_t *)val;
		}
		break;
	}
}

int
gdb_cpu_signal(int type, int code)
{

switch (type) {
	case T_BREAKPOINT: return (SIGTRAP);
	}
	return (SIGEMT);
}

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Editing: gdb_machdep.c

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