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Current Path: /usr/src/sys/powerpc/powerpc

📁 ..
📄 altivec.c(4.74 KB)
📄 autoconf.c(2.69 KB)
📄 bus_machdep.c(22.3 KB)
📄 busdma_machdep.c(31.78 KB)
📄 clock.c(8.72 KB)
📄 copyinout.c(15.08 KB)
📄 cpu.c(23.74 KB)
📄 cpu_subr64.S(2.99 KB)
📄 db_disasm.c(31.78 KB)
📄 db_hwwatch.c(1.71 KB)
📄 db_interface.c(1.78 KB)
📄 db_trace.c(8.56 KB)
📄 dump_machdep.c(1.63 KB)
📄 elf32_machdep.c(11.71 KB)
📄 elf64_machdep.c(12 KB)
📄 elf_common.c(4.21 KB)
📄 exec_machdep.c(29.55 KB)
📄 fpu.c(6.47 KB)
📄 gdb_machdep.c(3.5 KB)
📄 genassym.c(10.78 KB)
📄 in_cksum.c(6.64 KB)
📄 interrupt.c(3.9 KB)
📄 intr_machdep.c(15.53 KB)
📄 iommu_if.m(1.74 KB)
📄 machdep.c(21.72 KB)
📄 mem.c(8.4 KB)
📄 minidump_machdep.c(9.09 KB)
📄 mp_machdep.c(8.81 KB)
📄 nexus.c(7.06 KB)
📄 openpic.c(11.35 KB)
📄 pic_if.m(2.45 KB)
📄 platform.c(9.15 KB)
📄 platform_if.m(6.15 KB)
📄 pmap_dispatch.c(8.92 KB)
📄 ptrace_machdep.c(3.58 KB)
📄 sc_machdep.c(2.21 KB)
📄 setjmp.S(2.45 KB)
📄 sigcode32.S(2.4 KB)
📄 sigcode64.S(2.94 KB)
📄 stack_machdep.c(3.1 KB)
📄 support.S(11.06 KB)
📄 swtch32.S(7.31 KB)
📄 swtch64.S(10.59 KB)
📄 syncicache.c(2.51 KB)
📄 sys_machdep.c(1.73 KB)
📄 trap.c(25.06 KB)
📄 uio_machdep.c(4.04 KB)
📄 uma_machdep.c(2.89 KB)
📄 vm_machdep.c(7.5 KB)

Editing: gdb_machdep.c

/*-
 * SPDX-License-Identifier: BSD-2-Clause-FreeBSD
 *
 * Copyright (c) 2006 Marcel Moolenaar
 * 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/pcb.h>
#include <machine/reg.h>

#include <machine/hid.h>
#include <machine/spr.h>

#include <machine/trap.h>

#include <gdb/gdb.h>
#include <gdb/gdb_int.h>

extern vm_offset_t __startkernel;

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

*regsz = gdb_cpu_regsz(regnum);

if (kdb_thread == curthread) {
		if (regnum == 0 || (regnum >= 2 && regnum <= 31))
			return (kdb_frame->fixreg + regnum);
		if (regnum == 64)
			return (&kdb_frame->srr0);
		if (regnum == 67)
			return (&kdb_frame->lr);
	}

if (regnum == 1)
		return (&kdb_thrctx->pcb_sp);
	if (regnum == 2 && *regsz == 8)
		return (&kdb_thrctx->pcb_toc);
	if (regnum >= 12 && regnum <= 31)
		return (kdb_thrctx->pcb_context + (regnum - 12));
	if (regnum == 64)
		return (&kdb_thrctx->pcb_lr);

return (NULL);
}

void
gdb_cpu_setreg(int regnum, void *val)
{

switch (regnum) {
	case GDB_REG_PC:
		break;
	}
}

int
gdb_cpu_signal(int vector, int dummy __unused)
{
#if defined(BOOKE)
	if (vector == EXC_DEBUG || vector == EXC_PGM)
		return (SIGTRAP);
#else
	if (vector == EXC_TRC || vector == EXC_RUNMODETRC)
		return (SIGTRAP);
#endif

return (SIGEMT);
}

void
gdb_cpu_do_offsets(void)
{
	/*
	 * On PowerPC, .text starts at KERNBASE + SIZEOF_HEADERS and
	 * text segment at KERNBASE - SIZEOF_HEADERS.
	 * On PowerPC64, .text starts at KERNBASE and text segment at
	 * KERNBASE - 0x100.
	 * In both cases, the text segment offset is aligned to 64KB.
	 *
	 * The __startkernel variable holds the relocated KERNBASE offset.
	 * Thus, as long as SIZEOF_HEADERS doesn't get bigger than 0x100
	 * (which would lead to other issues), aligning __startkernel to
	 * 64KB gives the text segment offset.
	 *
	 * TODO: Add DataSeg to response. On PowerPC64 all sections reside
	 * in a single LOAD segment, but on PowerPC modifiable data reside
	 * in a separate segment, that GDB should also relocate.
	 */
	gdb_tx_begin(0);
	gdb_tx_str("TextSeg=");
	gdb_tx_varhex(__startkernel & ~0xffff);
	gdb_tx_end();
}

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Editing: gdb_machdep.c

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