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head/devel/gdb/files/kgdb/mipsfbsd-kern.c

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* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
* *
* from: src/gnu/usr.bin/gdb/kgdb/trgt_alpha.c,v 1.2.2.1 2005/09/15 05:32:10 marcel * from: src/gnu/usr.bin/gdb/kgdb/trgt_alpha.c,v 1.2.2.1 2005/09/15 05:32:10 marcel
*/ */
#include <sys/cdefs.h> #include <sys/cdefs.h>
__FBSDID("$FreeBSD: head/gnu/usr.bin/gdb/kgdb/trgt_mips.c 249878 2013-04-25 04:53:01Z imp $"); __FBSDID("$FreeBSD: head/gnu/usr.bin/gdb/kgdb/trgt_mips.c 249878 2013-04-25 04:53:01Z imp $");
#include <sys/types.h> #include "defs.h"
#include "frame-unwind.h"
#include "osabi.h"
#include "regcache.h"
#include "solib.h"
#include "trad-frame.h"
#include "mips-tdep.h"
#ifdef __mips__ #ifdef __mips__
#include <machine/asm.h> #include <machine/asm.h>
#include <machine/pcb.h> #include <machine/pcb.h>
#include <machine/frame.h> #include <machine/frame.h>
#endif #endif
#include <string.h>
#include <defs.h>
#include <frame-unwind.h>
//#include <target.h>
//#include <gdbthread.h>
//#include <inferior.h>
#include "osabi.h"
#include <regcache.h>
#include "solib.h"
#include "trad-frame.h"
#include <mips-tdep.h>
#include "kgdb.h" #include "kgdb.h"
/* Size of struct trapframe in registers. */ /* Size of struct trapframe in registers. */
#define TRAPFRAME_WORDS 74 #define TRAPFRAME_WORDS 74
/* From sys/mips/include/pcb.h. Offsets in the pcb_context[] array. */ /* From sys/mips/include/pcb.h. Offsets in the pcb_context[] array. */
#define FBSD_PCB_REG_S0 0 #define FBSD_PCB_REG_S0 0
#define FBSD_PCB_REG_S1 1 #define FBSD_PCB_REG_S1 1
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_Static_assert(FBSD_PCB_REG_SR == PCB_REG_SR, "PCB_REG_SR mismatch"); _Static_assert(FBSD_PCB_REG_SR == PCB_REG_SR, "PCB_REG_SR mismatch");
_Static_assert(FBSD_PCB_REG_GP == PCB_REG_GP, "PCB_REG_GP mismatch"); _Static_assert(FBSD_PCB_REG_GP == PCB_REG_GP, "PCB_REG_GP mismatch");
_Static_assert(FBSD_PCB_REG_PC == PCB_REG_PC, "PCB_REG_PC mismatch"); _Static_assert(FBSD_PCB_REG_PC == PCB_REG_PC, "PCB_REG_PC mismatch");
#endif #endif
static void static void
mipsfbsd_supply_pcb(struct regcache *regcache, CORE_ADDR pcb_addr) mipsfbsd_supply_pcb(struct regcache *regcache, CORE_ADDR pcb_addr)
{ {
struct gdbarch *gdbarch = get_regcache_arch (regcache); struct gdbarch *gdbarch = regcache->arch ();
size_t regsize = mips_isa_regsize (gdbarch); size_t regsize = mips_isa_regsize (gdbarch);
gdb_byte buf[regsize * (FBSD_PCB_REG_PC + 1)]; gdb_byte buf[regsize * (FBSD_PCB_REG_PC + 1)];
/* Read the entire pcb_context[] array in one go. The pcb_context[] /* Read the entire pcb_context[] array in one go. The pcb_context[]
array is after the pcb_regs member which is a trapframe. */ array is after the pcb_regs member which is a trapframe. */
if (target_read_memory (pcb_addr + TRAPFRAME_WORDS * regsize, buf, if (target_read_memory (pcb_addr + TRAPFRAME_WORDS * regsize, buf,
sizeof(buf)) != 0) sizeof(buf)) != 0)
return; return;
regcache_raw_supply_unsigned (regcache, MIPS_ZERO_REGNUM, 0); regcache->raw_supply_unsigned (MIPS_ZERO_REGNUM, 0);
regcache_raw_supply (regcache, MIPS_S2_REGNUM - 2, regcache->raw_supply (MIPS_S2_REGNUM - 2,
buf + (regsize * FBSD_PCB_REG_S0)); buf + (regsize * FBSD_PCB_REG_S0));
regcache_raw_supply (regcache, MIPS_S2_REGNUM - 1, regcache->raw_supply (MIPS_S2_REGNUM - 1,
buf + (regsize * FBSD_PCB_REG_S1)); buf + (regsize * FBSD_PCB_REG_S1));
regcache_raw_supply (regcache, MIPS_S2_REGNUM, regcache->raw_supply (MIPS_S2_REGNUM,
buf + (regsize * FBSD_PCB_REG_S2)); buf + (regsize * FBSD_PCB_REG_S2));
regcache_raw_supply (regcache, MIPS_S2_REGNUM + 1, regcache->raw_supply (MIPS_S2_REGNUM + 1,
buf + (regsize * FBSD_PCB_REG_S3)); buf + (regsize * FBSD_PCB_REG_S3));
regcache_raw_supply (regcache, MIPS_S2_REGNUM + 2, regcache->raw_supply (MIPS_S2_REGNUM + 2,
buf + (regsize * FBSD_PCB_REG_S4)); buf + (regsize * FBSD_PCB_REG_S4));
regcache_raw_supply (regcache, MIPS_S2_REGNUM + 3, regcache->raw_supply (MIPS_S2_REGNUM + 3,
buf + (regsize * FBSD_PCB_REG_S5)); buf + (regsize * FBSD_PCB_REG_S5));
regcache_raw_supply (regcache, MIPS_S2_REGNUM + 4, regcache->raw_supply (MIPS_S2_REGNUM + 4,
buf + (regsize * FBSD_PCB_REG_S6)); buf + (regsize * FBSD_PCB_REG_S6));
regcache_raw_supply (regcache, MIPS_S2_REGNUM + 5, regcache->raw_supply (MIPS_S2_REGNUM + 5,
buf + (regsize * FBSD_PCB_REG_S7)); buf + (regsize * FBSD_PCB_REG_S7));
regcache_raw_supply (regcache, MIPS_SP_REGNUM, regcache->raw_supply (MIPS_SP_REGNUM,
buf + (regsize * FBSD_PCB_REG_SP)); buf + (regsize * FBSD_PCB_REG_SP));
regcache_raw_supply (regcache, MIPS_S2_REGNUM + 6, regcache->raw_supply (MIPS_S2_REGNUM + 6,
buf + (regsize * FBSD_PCB_REG_S8)); buf + (regsize * FBSD_PCB_REG_S8));
regcache_raw_supply (regcache, MIPS_RA_REGNUM, regcache->raw_supply (MIPS_RA_REGNUM,
buf + (regsize * FBSD_PCB_REG_RA)); buf + (regsize * FBSD_PCB_REG_RA));
regcache_raw_supply (regcache, MIPS_PS_REGNUM, regcache->raw_supply (MIPS_PS_REGNUM,
buf + (regsize * FBSD_PCB_REG_SR)); buf + (regsize * FBSD_PCB_REG_SR));
regcache_raw_supply (regcache, MIPS_GP_REGNUM, regcache->raw_supply (MIPS_GP_REGNUM,
buf + (regsize * FBSD_PCB_REG_GP)); buf + (regsize * FBSD_PCB_REG_GP));
regcache_raw_supply (regcache, MIPS_EMBED_PC_REGNUM, regcache->raw_supply (MIPS_EMBED_PC_REGNUM,
buf + (regsize * FBSD_PCB_REG_PC)); buf + (regsize * FBSD_PCB_REG_PC));
} }
static struct trad_frame_cache * static struct trad_frame_cache *
mipsfbsd_trapframe_cache (struct frame_info *this_frame, void **this_cache) mipsfbsd_trapframe_cache (struct frame_info *this_frame, void **this_cache)
{ {
struct gdbarch *gdbarch = get_frame_arch (this_frame); struct gdbarch *gdbarch = get_frame_arch (this_frame);
enum bfd_endian byte_order = gdbarch_byte_order (gdbarch); enum bfd_endian byte_order = gdbarch_byte_order (gdbarch);
size_t regsize = mips_isa_regsize (gdbarch); size_t regsize = mips_isa_regsize (gdbarch);
▲ Show 20 Lines • Show All 144 Lines • ▼ Show 20 Linesmipsfbsd_kernel_init_abi (struct gdbarch_info info, struct gdbarch *gdbarch)
frame_unwind_prepend_unwinder (gdbarch, &mipsfbsd_trapframe_unwind); frame_unwind_prepend_unwinder (gdbarch, &mipsfbsd_trapframe_unwind);
set_solib_ops (gdbarch, &kld_so_ops); set_solib_ops (gdbarch, &kld_so_ops);
fbsd_vmcore_set_supply_pcb (gdbarch, mipsfbsd_supply_pcb); fbsd_vmcore_set_supply_pcb (gdbarch, mipsfbsd_supply_pcb);
fbsd_vmcore_set_cpu_pcb_addr (gdbarch, kgdb_trgt_stop_pcb); fbsd_vmcore_set_cpu_pcb_addr (gdbarch, kgdb_trgt_stop_pcb);
} }
void _initialize_mips_kgdb_tdep (void);
void void
_initialize_mips_kgdb_tdep (void) _initialize_mips_kgdb_tdep (void)
{ {
gdbarch_register_osabi_sniffer(bfd_arch_mips, gdbarch_register_osabi_sniffer(bfd_arch_mips,
bfd_target_elf_flavour, bfd_target_elf_flavour,
fbsd_kernel_osabi_sniffer); fbsd_kernel_osabi_sniffer);
gdbarch_register_osabi (bfd_arch_mips, 0, GDB_OSABI_FREEBSD_KERNEL, gdbarch_register_osabi (bfd_arch_mips, 0, GDB_OSABI_FREEBSD_KERNEL,
mipsfbsd_kernel_init_abi); mipsfbsd_kernel_init_abi);
} }