/* Target-dependent code for GNU/Linux on MIPS processors.
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/* Target-dependent code for GNU/Linux on MIPS processors.
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Copyright (C) 2001, 2002, 2004, 2005, 2006, 2007, 2008, 2009, 2010
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Copyright (C) 2001, 2002, 2004, 2005, 2006, 2007, 2008, 2009, 2010
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Free Software Foundation, Inc.
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Free Software Foundation, Inc.
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This file is part of GDB.
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This file is part of GDB.
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This program is free software; you can redistribute it and/or modify
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 3 of the License, or
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the Free Software Foundation; either version 3 of the License, or
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(at your option) any later version.
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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You should have received a copy of the GNU General Public License
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along with this program. If not, see <http://www.gnu.org/licenses/>. */
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along with this program. If not, see <http://www.gnu.org/licenses/>. */
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#include "defs.h"
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#include "defs.h"
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#include "gdbcore.h"
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#include "gdbcore.h"
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#include "target.h"
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#include "target.h"
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#include "solib-svr4.h"
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#include "solib-svr4.h"
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#include "osabi.h"
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#include "osabi.h"
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#include "mips-tdep.h"
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#include "mips-tdep.h"
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#include "gdb_string.h"
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#include "gdb_string.h"
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#include "gdb_assert.h"
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#include "gdb_assert.h"
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#include "frame.h"
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#include "frame.h"
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#include "regcache.h"
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#include "regcache.h"
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#include "trad-frame.h"
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#include "trad-frame.h"
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#include "tramp-frame.h"
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#include "tramp-frame.h"
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#include "gdbtypes.h"
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#include "gdbtypes.h"
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#include "solib.h"
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#include "solib.h"
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#include "solib-svr4.h"
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#include "solib-svr4.h"
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#include "solist.h"
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#include "solist.h"
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#include "symtab.h"
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#include "symtab.h"
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#include "target-descriptions.h"
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#include "target-descriptions.h"
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#include "mips-linux-tdep.h"
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#include "mips-linux-tdep.h"
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#include "glibc-tdep.h"
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#include "glibc-tdep.h"
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static struct target_so_ops mips_svr4_so_ops;
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static struct target_so_ops mips_svr4_so_ops;
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/* Figure out where the longjmp will land.
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/* Figure out where the longjmp will land.
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We expect the first arg to be a pointer to the jmp_buf structure
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We expect the first arg to be a pointer to the jmp_buf structure
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from which we extract the pc (MIPS_LINUX_JB_PC) that we will land
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from which we extract the pc (MIPS_LINUX_JB_PC) that we will land
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at. The pc is copied into PC. This routine returns 1 on
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at. The pc is copied into PC. This routine returns 1 on
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success. */
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success. */
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#define MIPS_LINUX_JB_ELEMENT_SIZE 4
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#define MIPS_LINUX_JB_ELEMENT_SIZE 4
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#define MIPS_LINUX_JB_PC 0
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#define MIPS_LINUX_JB_PC 0
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static int
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static int
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mips_linux_get_longjmp_target (struct frame_info *frame, CORE_ADDR *pc)
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mips_linux_get_longjmp_target (struct frame_info *frame, CORE_ADDR *pc)
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{
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{
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CORE_ADDR jb_addr;
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CORE_ADDR jb_addr;
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struct gdbarch *gdbarch = get_frame_arch (frame);
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struct gdbarch *gdbarch = get_frame_arch (frame);
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enum bfd_endian byte_order = gdbarch_byte_order (gdbarch);
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enum bfd_endian byte_order = gdbarch_byte_order (gdbarch);
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char buf[gdbarch_ptr_bit (gdbarch) / TARGET_CHAR_BIT];
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char buf[gdbarch_ptr_bit (gdbarch) / TARGET_CHAR_BIT];
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jb_addr = get_frame_register_unsigned (frame, MIPS_A0_REGNUM);
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jb_addr = get_frame_register_unsigned (frame, MIPS_A0_REGNUM);
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if (target_read_memory (jb_addr
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if (target_read_memory (jb_addr
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+ MIPS_LINUX_JB_PC * MIPS_LINUX_JB_ELEMENT_SIZE,
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+ MIPS_LINUX_JB_PC * MIPS_LINUX_JB_ELEMENT_SIZE,
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buf, gdbarch_ptr_bit (gdbarch) / TARGET_CHAR_BIT))
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buf, gdbarch_ptr_bit (gdbarch) / TARGET_CHAR_BIT))
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return 0;
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return 0;
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*pc = extract_unsigned_integer (buf,
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*pc = extract_unsigned_integer (buf,
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gdbarch_ptr_bit (gdbarch) / TARGET_CHAR_BIT,
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gdbarch_ptr_bit (gdbarch) / TARGET_CHAR_BIT,
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byte_order);
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byte_order);
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return 1;
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return 1;
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}
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}
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/* Transform the bits comprising a 32-bit register to the right size
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/* Transform the bits comprising a 32-bit register to the right size
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for regcache_raw_supply(). This is needed when mips_isa_regsize()
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for regcache_raw_supply(). This is needed when mips_isa_regsize()
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is 8. */
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is 8. */
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static void
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static void
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supply_32bit_reg (struct regcache *regcache, int regnum, const void *addr)
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supply_32bit_reg (struct regcache *regcache, int regnum, const void *addr)
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{
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{
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struct gdbarch *gdbarch = get_regcache_arch (regcache);
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struct gdbarch *gdbarch = get_regcache_arch (regcache);
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enum bfd_endian byte_order = gdbarch_byte_order (gdbarch);
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enum bfd_endian byte_order = gdbarch_byte_order (gdbarch);
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gdb_byte buf[MAX_REGISTER_SIZE];
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gdb_byte buf[MAX_REGISTER_SIZE];
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store_signed_integer (buf, register_size (gdbarch, regnum), byte_order,
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store_signed_integer (buf, register_size (gdbarch, regnum), byte_order,
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extract_signed_integer (addr, 4, byte_order));
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extract_signed_integer (addr, 4, byte_order));
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regcache_raw_supply (regcache, regnum, buf);
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regcache_raw_supply (regcache, regnum, buf);
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}
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}
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/* Unpack an elf_gregset_t into GDB's register cache. */
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/* Unpack an elf_gregset_t into GDB's register cache. */
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void
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void
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mips_supply_gregset (struct regcache *regcache,
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mips_supply_gregset (struct regcache *regcache,
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const mips_elf_gregset_t *gregsetp)
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const mips_elf_gregset_t *gregsetp)
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{
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{
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int regi;
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int regi;
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const mips_elf_greg_t *regp = *gregsetp;
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const mips_elf_greg_t *regp = *gregsetp;
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char zerobuf[MAX_REGISTER_SIZE];
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char zerobuf[MAX_REGISTER_SIZE];
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struct gdbarch *gdbarch = get_regcache_arch (regcache);
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struct gdbarch *gdbarch = get_regcache_arch (regcache);
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memset (zerobuf, 0, MAX_REGISTER_SIZE);
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memset (zerobuf, 0, MAX_REGISTER_SIZE);
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for (regi = EF_REG0 + 1; regi <= EF_REG31; regi++)
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for (regi = EF_REG0 + 1; regi <= EF_REG31; regi++)
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supply_32bit_reg (regcache, regi - EF_REG0, regp + regi);
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supply_32bit_reg (regcache, regi - EF_REG0, regp + regi);
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if (mips_linux_restart_reg_p (gdbarch))
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if (mips_linux_restart_reg_p (gdbarch))
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supply_32bit_reg (regcache, MIPS_RESTART_REGNUM, regp + EF_REG0);
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supply_32bit_reg (regcache, MIPS_RESTART_REGNUM, regp + EF_REG0);
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supply_32bit_reg (regcache, mips_regnum (gdbarch)->lo, regp + EF_LO);
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supply_32bit_reg (regcache, mips_regnum (gdbarch)->lo, regp + EF_LO);
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supply_32bit_reg (regcache, mips_regnum (gdbarch)->hi, regp + EF_HI);
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supply_32bit_reg (regcache, mips_regnum (gdbarch)->hi, regp + EF_HI);
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supply_32bit_reg (regcache, mips_regnum (gdbarch)->pc,
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supply_32bit_reg (regcache, mips_regnum (gdbarch)->pc,
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regp + EF_CP0_EPC);
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regp + EF_CP0_EPC);
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supply_32bit_reg (regcache, mips_regnum (gdbarch)->badvaddr,
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supply_32bit_reg (regcache, mips_regnum (gdbarch)->badvaddr,
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regp + EF_CP0_BADVADDR);
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regp + EF_CP0_BADVADDR);
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supply_32bit_reg (regcache, MIPS_PS_REGNUM, regp + EF_CP0_STATUS);
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supply_32bit_reg (regcache, MIPS_PS_REGNUM, regp + EF_CP0_STATUS);
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supply_32bit_reg (regcache, mips_regnum (gdbarch)->cause,
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supply_32bit_reg (regcache, mips_regnum (gdbarch)->cause,
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regp + EF_CP0_CAUSE);
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regp + EF_CP0_CAUSE);
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/* Fill inaccessible registers with zero. */
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/* Fill inaccessible registers with zero. */
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regcache_raw_supply (regcache, MIPS_ZERO_REGNUM, zerobuf);
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regcache_raw_supply (regcache, MIPS_ZERO_REGNUM, zerobuf);
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regcache_raw_supply (regcache, MIPS_UNUSED_REGNUM, zerobuf);
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regcache_raw_supply (regcache, MIPS_UNUSED_REGNUM, zerobuf);
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for (regi = MIPS_FIRST_EMBED_REGNUM;
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for (regi = MIPS_FIRST_EMBED_REGNUM;
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regi <= MIPS_LAST_EMBED_REGNUM;
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regi <= MIPS_LAST_EMBED_REGNUM;
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regi++)
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regi++)
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regcache_raw_supply (regcache, regi, zerobuf);
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regcache_raw_supply (regcache, regi, zerobuf);
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}
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}
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/* Pack our registers (or one register) into an elf_gregset_t. */
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/* Pack our registers (or one register) into an elf_gregset_t. */
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void
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void
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mips_fill_gregset (const struct regcache *regcache,
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mips_fill_gregset (const struct regcache *regcache,
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mips_elf_gregset_t *gregsetp, int regno)
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mips_elf_gregset_t *gregsetp, int regno)
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{
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{
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struct gdbarch *gdbarch = get_regcache_arch (regcache);
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struct gdbarch *gdbarch = get_regcache_arch (regcache);
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int regaddr, regi;
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int regaddr, regi;
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mips_elf_greg_t *regp = *gregsetp;
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mips_elf_greg_t *regp = *gregsetp;
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void *dst;
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void *dst;
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if (regno == -1)
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if (regno == -1)
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{
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{
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memset (regp, 0, sizeof (mips_elf_gregset_t));
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memset (regp, 0, sizeof (mips_elf_gregset_t));
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for (regi = 1; regi < 32; regi++)
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for (regi = 1; regi < 32; regi++)
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mips_fill_gregset (regcache, gregsetp, regi);
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mips_fill_gregset (regcache, gregsetp, regi);
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mips_fill_gregset (regcache, gregsetp, mips_regnum (gdbarch)->lo);
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mips_fill_gregset (regcache, gregsetp, mips_regnum (gdbarch)->lo);
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mips_fill_gregset (regcache, gregsetp, mips_regnum (gdbarch)->hi);
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mips_fill_gregset (regcache, gregsetp, mips_regnum (gdbarch)->hi);
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mips_fill_gregset (regcache, gregsetp, mips_regnum (gdbarch)->pc);
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mips_fill_gregset (regcache, gregsetp, mips_regnum (gdbarch)->pc);
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mips_fill_gregset (regcache, gregsetp, mips_regnum (gdbarch)->badvaddr);
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mips_fill_gregset (regcache, gregsetp, mips_regnum (gdbarch)->badvaddr);
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mips_fill_gregset (regcache, gregsetp, MIPS_PS_REGNUM);
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mips_fill_gregset (regcache, gregsetp, MIPS_PS_REGNUM);
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mips_fill_gregset (regcache, gregsetp, mips_regnum (gdbarch)->cause);
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mips_fill_gregset (regcache, gregsetp, mips_regnum (gdbarch)->cause);
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mips_fill_gregset (regcache, gregsetp, MIPS_RESTART_REGNUM);
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mips_fill_gregset (regcache, gregsetp, MIPS_RESTART_REGNUM);
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return;
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return;
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}
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}
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if (regno > 0 && regno < 32)
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if (regno > 0 && regno < 32)
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{
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{
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dst = regp + regno + EF_REG0;
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dst = regp + regno + EF_REG0;
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regcache_raw_collect (regcache, regno, dst);
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regcache_raw_collect (regcache, regno, dst);
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return;
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return;
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}
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}
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if (regno == mips_regnum (gdbarch)->lo)
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if (regno == mips_regnum (gdbarch)->lo)
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regaddr = EF_LO;
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regaddr = EF_LO;
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else if (regno == mips_regnum (gdbarch)->hi)
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else if (regno == mips_regnum (gdbarch)->hi)
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regaddr = EF_HI;
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regaddr = EF_HI;
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else if (regno == mips_regnum (gdbarch)->pc)
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else if (regno == mips_regnum (gdbarch)->pc)
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regaddr = EF_CP0_EPC;
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regaddr = EF_CP0_EPC;
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else if (regno == mips_regnum (gdbarch)->badvaddr)
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else if (regno == mips_regnum (gdbarch)->badvaddr)
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regaddr = EF_CP0_BADVADDR;
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regaddr = EF_CP0_BADVADDR;
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else if (regno == MIPS_PS_REGNUM)
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else if (regno == MIPS_PS_REGNUM)
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regaddr = EF_CP0_STATUS;
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regaddr = EF_CP0_STATUS;
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else if (regno == mips_regnum (gdbarch)->cause)
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else if (regno == mips_regnum (gdbarch)->cause)
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regaddr = EF_CP0_CAUSE;
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regaddr = EF_CP0_CAUSE;
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else if (mips_linux_restart_reg_p (gdbarch)
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else if (mips_linux_restart_reg_p (gdbarch)
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&& regno == MIPS_RESTART_REGNUM)
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&& regno == MIPS_RESTART_REGNUM)
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regaddr = EF_REG0;
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regaddr = EF_REG0;
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else
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else
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regaddr = -1;
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regaddr = -1;
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if (regaddr != -1)
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if (regaddr != -1)
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{
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{
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dst = regp + regaddr;
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dst = regp + regaddr;
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regcache_raw_collect (regcache, regno, dst);
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regcache_raw_collect (regcache, regno, dst);
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}
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}
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}
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}
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/* Likewise, unpack an elf_fpregset_t. */
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/* Likewise, unpack an elf_fpregset_t. */
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void
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void
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mips_supply_fpregset (struct regcache *regcache,
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mips_supply_fpregset (struct regcache *regcache,
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const mips_elf_fpregset_t *fpregsetp)
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const mips_elf_fpregset_t *fpregsetp)
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{
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{
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struct gdbarch *gdbarch = get_regcache_arch (regcache);
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struct gdbarch *gdbarch = get_regcache_arch (regcache);
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int regi;
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int regi;
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char zerobuf[MAX_REGISTER_SIZE];
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char zerobuf[MAX_REGISTER_SIZE];
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memset (zerobuf, 0, MAX_REGISTER_SIZE);
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memset (zerobuf, 0, MAX_REGISTER_SIZE);
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for (regi = 0; regi < 32; regi++)
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for (regi = 0; regi < 32; regi++)
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regcache_raw_supply (regcache,
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regcache_raw_supply (regcache,
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gdbarch_fp0_regnum (gdbarch) + regi,
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gdbarch_fp0_regnum (gdbarch) + regi,
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*fpregsetp + regi);
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*fpregsetp + regi);
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regcache_raw_supply (regcache,
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regcache_raw_supply (regcache,
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mips_regnum (gdbarch)->fp_control_status,
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mips_regnum (gdbarch)->fp_control_status,
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*fpregsetp + 32);
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*fpregsetp + 32);
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/* FIXME: how can we supply FCRIR? The ABI doesn't tell us. */
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/* FIXME: how can we supply FCRIR? The ABI doesn't tell us. */
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regcache_raw_supply (regcache,
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regcache_raw_supply (regcache,
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mips_regnum (gdbarch)->fp_implementation_revision,
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mips_regnum (gdbarch)->fp_implementation_revision,
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zerobuf);
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zerobuf);
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}
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}
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/* Likewise, pack one or all floating point registers into an
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/* Likewise, pack one or all floating point registers into an
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elf_fpregset_t. */
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elf_fpregset_t. */
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void
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void
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mips_fill_fpregset (const struct regcache *regcache,
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mips_fill_fpregset (const struct regcache *regcache,
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mips_elf_fpregset_t *fpregsetp, int regno)
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mips_elf_fpregset_t *fpregsetp, int regno)
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{
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{
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struct gdbarch *gdbarch = get_regcache_arch (regcache);
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struct gdbarch *gdbarch = get_regcache_arch (regcache);
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char *from, *to;
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char *from, *to;
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if ((regno >= gdbarch_fp0_regnum (gdbarch))
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if ((regno >= gdbarch_fp0_regnum (gdbarch))
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&& (regno < gdbarch_fp0_regnum (gdbarch) + 32))
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&& (regno < gdbarch_fp0_regnum (gdbarch) + 32))
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{
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{
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to = (char *) (*fpregsetp + regno - gdbarch_fp0_regnum (gdbarch));
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to = (char *) (*fpregsetp + regno - gdbarch_fp0_regnum (gdbarch));
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regcache_raw_collect (regcache, regno, to);
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regcache_raw_collect (regcache, regno, to);
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}
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}
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else if (regno == mips_regnum (gdbarch)->fp_control_status)
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else if (regno == mips_regnum (gdbarch)->fp_control_status)
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{
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{
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to = (char *) (*fpregsetp + 32);
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to = (char *) (*fpregsetp + 32);
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regcache_raw_collect (regcache, regno, to);
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regcache_raw_collect (regcache, regno, to);
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}
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}
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else if (regno == -1)
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else if (regno == -1)
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{
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{
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int regi;
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int regi;
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for (regi = 0; regi < 32; regi++)
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for (regi = 0; regi < 32; regi++)
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mips_fill_fpregset (regcache, fpregsetp,
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mips_fill_fpregset (regcache, fpregsetp,
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gdbarch_fp0_regnum (gdbarch) + regi);
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gdbarch_fp0_regnum (gdbarch) + regi);
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mips_fill_fpregset (regcache, fpregsetp,
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mips_fill_fpregset (regcache, fpregsetp,
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mips_regnum (gdbarch)->fp_control_status);
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mips_regnum (gdbarch)->fp_control_status);
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}
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}
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}
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}
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/* Support for 64-bit ABIs. */
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/* Support for 64-bit ABIs. */
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|
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/* Figure out where the longjmp will land.
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/* Figure out where the longjmp will land.
|
We expect the first arg to be a pointer to the jmp_buf structure
|
We expect the first arg to be a pointer to the jmp_buf structure
|
from which we extract the pc (MIPS_LINUX_JB_PC) that we will land
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from which we extract the pc (MIPS_LINUX_JB_PC) that we will land
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at. The pc is copied into PC. This routine returns 1 on
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at. The pc is copied into PC. This routine returns 1 on
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success. */
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success. */
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/* Details about jmp_buf. */
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/* Details about jmp_buf. */
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#define MIPS64_LINUX_JB_PC 0
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#define MIPS64_LINUX_JB_PC 0
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static int
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static int
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mips64_linux_get_longjmp_target (struct frame_info *frame, CORE_ADDR *pc)
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mips64_linux_get_longjmp_target (struct frame_info *frame, CORE_ADDR *pc)
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{
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{
|
CORE_ADDR jb_addr;
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CORE_ADDR jb_addr;
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struct gdbarch *gdbarch = get_frame_arch (frame);
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struct gdbarch *gdbarch = get_frame_arch (frame);
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enum bfd_endian byte_order = gdbarch_byte_order (gdbarch);
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enum bfd_endian byte_order = gdbarch_byte_order (gdbarch);
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void *buf = alloca (gdbarch_ptr_bit (gdbarch) / TARGET_CHAR_BIT);
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void *buf = alloca (gdbarch_ptr_bit (gdbarch) / TARGET_CHAR_BIT);
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int element_size = gdbarch_ptr_bit (gdbarch) == 32 ? 4 : 8;
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int element_size = gdbarch_ptr_bit (gdbarch) == 32 ? 4 : 8;
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jb_addr = get_frame_register_unsigned (frame, MIPS_A0_REGNUM);
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jb_addr = get_frame_register_unsigned (frame, MIPS_A0_REGNUM);
|
|
|
if (target_read_memory (jb_addr + MIPS64_LINUX_JB_PC * element_size,
|
if (target_read_memory (jb_addr + MIPS64_LINUX_JB_PC * element_size,
|
buf,
|
buf,
|
gdbarch_ptr_bit (gdbarch) / TARGET_CHAR_BIT))
|
gdbarch_ptr_bit (gdbarch) / TARGET_CHAR_BIT))
|
return 0;
|
return 0;
|
|
|
*pc = extract_unsigned_integer (buf,
|
*pc = extract_unsigned_integer (buf,
|
gdbarch_ptr_bit (gdbarch) / TARGET_CHAR_BIT,
|
gdbarch_ptr_bit (gdbarch) / TARGET_CHAR_BIT,
|
byte_order);
|
byte_order);
|
|
|
return 1;
|
return 1;
|
}
|
}
|
|
|
/* Register set support functions. These operate on standard 64-bit
|
/* Register set support functions. These operate on standard 64-bit
|
regsets, but work whether the target is 32-bit or 64-bit. A 32-bit
|
regsets, but work whether the target is 32-bit or 64-bit. A 32-bit
|
target will still use the 64-bit format for PTRACE_GETREGS. */
|
target will still use the 64-bit format for PTRACE_GETREGS. */
|
|
|
/* Supply a 64-bit register. */
|
/* Supply a 64-bit register. */
|
|
|
static void
|
static void
|
supply_64bit_reg (struct regcache *regcache, int regnum,
|
supply_64bit_reg (struct regcache *regcache, int regnum,
|
const gdb_byte *buf)
|
const gdb_byte *buf)
|
{
|
{
|
struct gdbarch *gdbarch = get_regcache_arch (regcache);
|
struct gdbarch *gdbarch = get_regcache_arch (regcache);
|
if (gdbarch_byte_order (gdbarch) == BFD_ENDIAN_BIG
|
if (gdbarch_byte_order (gdbarch) == BFD_ENDIAN_BIG
|
&& register_size (gdbarch, regnum) == 4)
|
&& register_size (gdbarch, regnum) == 4)
|
regcache_raw_supply (regcache, regnum, buf + 4);
|
regcache_raw_supply (regcache, regnum, buf + 4);
|
else
|
else
|
regcache_raw_supply (regcache, regnum, buf);
|
regcache_raw_supply (regcache, regnum, buf);
|
}
|
}
|
|
|
/* Unpack a 64-bit elf_gregset_t into GDB's register cache. */
|
/* Unpack a 64-bit elf_gregset_t into GDB's register cache. */
|
|
|
void
|
void
|
mips64_supply_gregset (struct regcache *regcache,
|
mips64_supply_gregset (struct regcache *regcache,
|
const mips64_elf_gregset_t *gregsetp)
|
const mips64_elf_gregset_t *gregsetp)
|
{
|
{
|
int regi;
|
int regi;
|
const mips64_elf_greg_t *regp = *gregsetp;
|
const mips64_elf_greg_t *regp = *gregsetp;
|
gdb_byte zerobuf[MAX_REGISTER_SIZE];
|
gdb_byte zerobuf[MAX_REGISTER_SIZE];
|
struct gdbarch *gdbarch = get_regcache_arch (regcache);
|
struct gdbarch *gdbarch = get_regcache_arch (regcache);
|
|
|
memset (zerobuf, 0, MAX_REGISTER_SIZE);
|
memset (zerobuf, 0, MAX_REGISTER_SIZE);
|
|
|
for (regi = MIPS64_EF_REG0 + 1; regi <= MIPS64_EF_REG31; regi++)
|
for (regi = MIPS64_EF_REG0 + 1; regi <= MIPS64_EF_REG31; regi++)
|
supply_64bit_reg (regcache, regi - MIPS64_EF_REG0,
|
supply_64bit_reg (regcache, regi - MIPS64_EF_REG0,
|
(const gdb_byte *)(regp + regi));
|
(const gdb_byte *)(regp + regi));
|
|
|
if (mips_linux_restart_reg_p (gdbarch))
|
if (mips_linux_restart_reg_p (gdbarch))
|
supply_64bit_reg (regcache, MIPS_RESTART_REGNUM,
|
supply_64bit_reg (regcache, MIPS_RESTART_REGNUM,
|
(const gdb_byte *)(regp + MIPS64_EF_REG0));
|
(const gdb_byte *)(regp + MIPS64_EF_REG0));
|
|
|
supply_64bit_reg (regcache, mips_regnum (gdbarch)->lo,
|
supply_64bit_reg (regcache, mips_regnum (gdbarch)->lo,
|
(const gdb_byte *) (regp + MIPS64_EF_LO));
|
(const gdb_byte *) (regp + MIPS64_EF_LO));
|
supply_64bit_reg (regcache, mips_regnum (gdbarch)->hi,
|
supply_64bit_reg (regcache, mips_regnum (gdbarch)->hi,
|
(const gdb_byte *) (regp + MIPS64_EF_HI));
|
(const gdb_byte *) (regp + MIPS64_EF_HI));
|
|
|
supply_64bit_reg (regcache, mips_regnum (gdbarch)->pc,
|
supply_64bit_reg (regcache, mips_regnum (gdbarch)->pc,
|
(const gdb_byte *) (regp + MIPS64_EF_CP0_EPC));
|
(const gdb_byte *) (regp + MIPS64_EF_CP0_EPC));
|
supply_64bit_reg (regcache, mips_regnum (gdbarch)->badvaddr,
|
supply_64bit_reg (regcache, mips_regnum (gdbarch)->badvaddr,
|
(const gdb_byte *) (regp + MIPS64_EF_CP0_BADVADDR));
|
(const gdb_byte *) (regp + MIPS64_EF_CP0_BADVADDR));
|
supply_64bit_reg (regcache, MIPS_PS_REGNUM,
|
supply_64bit_reg (regcache, MIPS_PS_REGNUM,
|
(const gdb_byte *) (regp + MIPS64_EF_CP0_STATUS));
|
(const gdb_byte *) (regp + MIPS64_EF_CP0_STATUS));
|
supply_64bit_reg (regcache, mips_regnum (gdbarch)->cause,
|
supply_64bit_reg (regcache, mips_regnum (gdbarch)->cause,
|
(const gdb_byte *) (regp + MIPS64_EF_CP0_CAUSE));
|
(const gdb_byte *) (regp + MIPS64_EF_CP0_CAUSE));
|
|
|
/* Fill inaccessible registers with zero. */
|
/* Fill inaccessible registers with zero. */
|
regcache_raw_supply (regcache, MIPS_ZERO_REGNUM, zerobuf);
|
regcache_raw_supply (regcache, MIPS_ZERO_REGNUM, zerobuf);
|
regcache_raw_supply (regcache, MIPS_UNUSED_REGNUM, zerobuf);
|
regcache_raw_supply (regcache, MIPS_UNUSED_REGNUM, zerobuf);
|
for (regi = MIPS_FIRST_EMBED_REGNUM;
|
for (regi = MIPS_FIRST_EMBED_REGNUM;
|
regi <= MIPS_LAST_EMBED_REGNUM;
|
regi <= MIPS_LAST_EMBED_REGNUM;
|
regi++)
|
regi++)
|
regcache_raw_supply (regcache, regi, zerobuf);
|
regcache_raw_supply (regcache, regi, zerobuf);
|
}
|
}
|
|
|
/* Pack our registers (or one register) into a 64-bit elf_gregset_t. */
|
/* Pack our registers (or one register) into a 64-bit elf_gregset_t. */
|
|
|
void
|
void
|
mips64_fill_gregset (const struct regcache *regcache,
|
mips64_fill_gregset (const struct regcache *regcache,
|
mips64_elf_gregset_t *gregsetp, int regno)
|
mips64_elf_gregset_t *gregsetp, int regno)
|
{
|
{
|
struct gdbarch *gdbarch = get_regcache_arch (regcache);
|
struct gdbarch *gdbarch = get_regcache_arch (regcache);
|
enum bfd_endian byte_order = gdbarch_byte_order (gdbarch);
|
enum bfd_endian byte_order = gdbarch_byte_order (gdbarch);
|
int regaddr, regi;
|
int regaddr, regi;
|
mips64_elf_greg_t *regp = *gregsetp;
|
mips64_elf_greg_t *regp = *gregsetp;
|
void *dst;
|
void *dst;
|
|
|
if (regno == -1)
|
if (regno == -1)
|
{
|
{
|
memset (regp, 0, sizeof (mips64_elf_gregset_t));
|
memset (regp, 0, sizeof (mips64_elf_gregset_t));
|
for (regi = 1; regi < 32; regi++)
|
for (regi = 1; regi < 32; regi++)
|
mips64_fill_gregset (regcache, gregsetp, regi);
|
mips64_fill_gregset (regcache, gregsetp, regi);
|
mips64_fill_gregset (regcache, gregsetp, mips_regnum (gdbarch)->lo);
|
mips64_fill_gregset (regcache, gregsetp, mips_regnum (gdbarch)->lo);
|
mips64_fill_gregset (regcache, gregsetp, mips_regnum (gdbarch)->hi);
|
mips64_fill_gregset (regcache, gregsetp, mips_regnum (gdbarch)->hi);
|
mips64_fill_gregset (regcache, gregsetp, mips_regnum (gdbarch)->pc);
|
mips64_fill_gregset (regcache, gregsetp, mips_regnum (gdbarch)->pc);
|
mips64_fill_gregset (regcache, gregsetp, mips_regnum (gdbarch)->badvaddr);
|
mips64_fill_gregset (regcache, gregsetp, mips_regnum (gdbarch)->badvaddr);
|
mips64_fill_gregset (regcache, gregsetp, MIPS_PS_REGNUM);
|
mips64_fill_gregset (regcache, gregsetp, MIPS_PS_REGNUM);
|
mips64_fill_gregset (regcache, gregsetp, mips_regnum (gdbarch)->cause);
|
mips64_fill_gregset (regcache, gregsetp, mips_regnum (gdbarch)->cause);
|
mips64_fill_gregset (regcache, gregsetp, MIPS_RESTART_REGNUM);
|
mips64_fill_gregset (regcache, gregsetp, MIPS_RESTART_REGNUM);
|
return;
|
return;
|
}
|
}
|
|
|
if (regno > 0 && regno < 32)
|
if (regno > 0 && regno < 32)
|
regaddr = regno + MIPS64_EF_REG0;
|
regaddr = regno + MIPS64_EF_REG0;
|
else if (regno == mips_regnum (gdbarch)->lo)
|
else if (regno == mips_regnum (gdbarch)->lo)
|
regaddr = MIPS64_EF_LO;
|
regaddr = MIPS64_EF_LO;
|
else if (regno == mips_regnum (gdbarch)->hi)
|
else if (regno == mips_regnum (gdbarch)->hi)
|
regaddr = MIPS64_EF_HI;
|
regaddr = MIPS64_EF_HI;
|
else if (regno == mips_regnum (gdbarch)->pc)
|
else if (regno == mips_regnum (gdbarch)->pc)
|
regaddr = MIPS64_EF_CP0_EPC;
|
regaddr = MIPS64_EF_CP0_EPC;
|
else if (regno == mips_regnum (gdbarch)->badvaddr)
|
else if (regno == mips_regnum (gdbarch)->badvaddr)
|
regaddr = MIPS64_EF_CP0_BADVADDR;
|
regaddr = MIPS64_EF_CP0_BADVADDR;
|
else if (regno == MIPS_PS_REGNUM)
|
else if (regno == MIPS_PS_REGNUM)
|
regaddr = MIPS64_EF_CP0_STATUS;
|
regaddr = MIPS64_EF_CP0_STATUS;
|
else if (regno == mips_regnum (gdbarch)->cause)
|
else if (regno == mips_regnum (gdbarch)->cause)
|
regaddr = MIPS64_EF_CP0_CAUSE;
|
regaddr = MIPS64_EF_CP0_CAUSE;
|
else if (mips_linux_restart_reg_p (gdbarch)
|
else if (mips_linux_restart_reg_p (gdbarch)
|
&& regno == MIPS_RESTART_REGNUM)
|
&& regno == MIPS_RESTART_REGNUM)
|
regaddr = MIPS64_EF_REG0;
|
regaddr = MIPS64_EF_REG0;
|
else
|
else
|
regaddr = -1;
|
regaddr = -1;
|
|
|
if (regaddr != -1)
|
if (regaddr != -1)
|
{
|
{
|
gdb_byte buf[MAX_REGISTER_SIZE];
|
gdb_byte buf[MAX_REGISTER_SIZE];
|
LONGEST val;
|
LONGEST val;
|
|
|
regcache_raw_collect (regcache, regno, buf);
|
regcache_raw_collect (regcache, regno, buf);
|
val = extract_signed_integer (buf, register_size (gdbarch, regno),
|
val = extract_signed_integer (buf, register_size (gdbarch, regno),
|
byte_order);
|
byte_order);
|
dst = regp + regaddr;
|
dst = regp + regaddr;
|
store_signed_integer (dst, 8, byte_order, val);
|
store_signed_integer (dst, 8, byte_order, val);
|
}
|
}
|
}
|
}
|
|
|
/* Likewise, unpack an elf_fpregset_t. */
|
/* Likewise, unpack an elf_fpregset_t. */
|
|
|
void
|
void
|
mips64_supply_fpregset (struct regcache *regcache,
|
mips64_supply_fpregset (struct regcache *regcache,
|
const mips64_elf_fpregset_t *fpregsetp)
|
const mips64_elf_fpregset_t *fpregsetp)
|
{
|
{
|
struct gdbarch *gdbarch = get_regcache_arch (regcache);
|
struct gdbarch *gdbarch = get_regcache_arch (regcache);
|
int regi;
|
int regi;
|
|
|
/* See mips_linux_o32_sigframe_init for a description of the
|
/* See mips_linux_o32_sigframe_init for a description of the
|
peculiar FP register layout. */
|
peculiar FP register layout. */
|
if (register_size (gdbarch, gdbarch_fp0_regnum (gdbarch)) == 4)
|
if (register_size (gdbarch, gdbarch_fp0_regnum (gdbarch)) == 4)
|
for (regi = 0; regi < 32; regi++)
|
for (regi = 0; regi < 32; regi++)
|
{
|
{
|
const gdb_byte *reg_ptr = (const gdb_byte *)(*fpregsetp + (regi & ~1));
|
const gdb_byte *reg_ptr = (const gdb_byte *)(*fpregsetp + (regi & ~1));
|
if ((gdbarch_byte_order (gdbarch) == BFD_ENDIAN_BIG) != (regi & 1))
|
if ((gdbarch_byte_order (gdbarch) == BFD_ENDIAN_BIG) != (regi & 1))
|
reg_ptr += 4;
|
reg_ptr += 4;
|
regcache_raw_supply (regcache,
|
regcache_raw_supply (regcache,
|
gdbarch_fp0_regnum (gdbarch) + regi,
|
gdbarch_fp0_regnum (gdbarch) + regi,
|
reg_ptr);
|
reg_ptr);
|
}
|
}
|
else
|
else
|
for (regi = 0; regi < 32; regi++)
|
for (regi = 0; regi < 32; regi++)
|
regcache_raw_supply (regcache,
|
regcache_raw_supply (regcache,
|
gdbarch_fp0_regnum (gdbarch) + regi,
|
gdbarch_fp0_regnum (gdbarch) + regi,
|
(const char *)(*fpregsetp + regi));
|
(const char *)(*fpregsetp + regi));
|
|
|
supply_32bit_reg (regcache, mips_regnum (gdbarch)->fp_control_status,
|
supply_32bit_reg (regcache, mips_regnum (gdbarch)->fp_control_status,
|
(const gdb_byte *)(*fpregsetp + 32));
|
(const gdb_byte *)(*fpregsetp + 32));
|
|
|
/* The ABI doesn't tell us how to supply FCRIR, and core dumps don't
|
/* The ABI doesn't tell us how to supply FCRIR, and core dumps don't
|
include it - but the result of PTRACE_GETFPREGS does. The best we
|
include it - but the result of PTRACE_GETFPREGS does. The best we
|
can do is to assume that its value is present. */
|
can do is to assume that its value is present. */
|
supply_32bit_reg (regcache,
|
supply_32bit_reg (regcache,
|
mips_regnum (gdbarch)->fp_implementation_revision,
|
mips_regnum (gdbarch)->fp_implementation_revision,
|
(const gdb_byte *)(*fpregsetp + 32) + 4);
|
(const gdb_byte *)(*fpregsetp + 32) + 4);
|
}
|
}
|
|
|
/* Likewise, pack one or all floating point registers into an
|
/* Likewise, pack one or all floating point registers into an
|
elf_fpregset_t. */
|
elf_fpregset_t. */
|
|
|
void
|
void
|
mips64_fill_fpregset (const struct regcache *regcache,
|
mips64_fill_fpregset (const struct regcache *regcache,
|
mips64_elf_fpregset_t *fpregsetp, int regno)
|
mips64_elf_fpregset_t *fpregsetp, int regno)
|
{
|
{
|
struct gdbarch *gdbarch = get_regcache_arch (regcache);
|
struct gdbarch *gdbarch = get_regcache_arch (regcache);
|
enum bfd_endian byte_order = gdbarch_byte_order (gdbarch);
|
enum bfd_endian byte_order = gdbarch_byte_order (gdbarch);
|
gdb_byte *to;
|
gdb_byte *to;
|
|
|
if ((regno >= gdbarch_fp0_regnum (gdbarch))
|
if ((regno >= gdbarch_fp0_regnum (gdbarch))
|
&& (regno < gdbarch_fp0_regnum (gdbarch) + 32))
|
&& (regno < gdbarch_fp0_regnum (gdbarch) + 32))
|
{
|
{
|
/* See mips_linux_o32_sigframe_init for a description of the
|
/* See mips_linux_o32_sigframe_init for a description of the
|
peculiar FP register layout. */
|
peculiar FP register layout. */
|
if (register_size (gdbarch, regno) == 4)
|
if (register_size (gdbarch, regno) == 4)
|
{
|
{
|
int regi = regno - gdbarch_fp0_regnum (gdbarch);
|
int regi = regno - gdbarch_fp0_regnum (gdbarch);
|
|
|
to = (gdb_byte *) (*fpregsetp + (regi & ~1));
|
to = (gdb_byte *) (*fpregsetp + (regi & ~1));
|
if ((gdbarch_byte_order (gdbarch) == BFD_ENDIAN_BIG) != (regi & 1))
|
if ((gdbarch_byte_order (gdbarch) == BFD_ENDIAN_BIG) != (regi & 1))
|
to += 4;
|
to += 4;
|
regcache_raw_collect (regcache, regno, to);
|
regcache_raw_collect (regcache, regno, to);
|
}
|
}
|
else
|
else
|
{
|
{
|
to = (gdb_byte *) (*fpregsetp + regno - gdbarch_fp0_regnum (gdbarch));
|
to = (gdb_byte *) (*fpregsetp + regno - gdbarch_fp0_regnum (gdbarch));
|
regcache_raw_collect (regcache, regno, to);
|
regcache_raw_collect (regcache, regno, to);
|
}
|
}
|
}
|
}
|
else if (regno == mips_regnum (gdbarch)->fp_control_status)
|
else if (regno == mips_regnum (gdbarch)->fp_control_status)
|
{
|
{
|
gdb_byte buf[MAX_REGISTER_SIZE];
|
gdb_byte buf[MAX_REGISTER_SIZE];
|
LONGEST val;
|
LONGEST val;
|
|
|
regcache_raw_collect (regcache, regno, buf);
|
regcache_raw_collect (regcache, regno, buf);
|
val = extract_signed_integer (buf, register_size (gdbarch, regno),
|
val = extract_signed_integer (buf, register_size (gdbarch, regno),
|
byte_order);
|
byte_order);
|
to = (gdb_byte *) (*fpregsetp + 32);
|
to = (gdb_byte *) (*fpregsetp + 32);
|
store_signed_integer (to, 4, byte_order, val);
|
store_signed_integer (to, 4, byte_order, val);
|
}
|
}
|
else if (regno == mips_regnum (gdbarch)->fp_implementation_revision)
|
else if (regno == mips_regnum (gdbarch)->fp_implementation_revision)
|
{
|
{
|
gdb_byte buf[MAX_REGISTER_SIZE];
|
gdb_byte buf[MAX_REGISTER_SIZE];
|
LONGEST val;
|
LONGEST val;
|
|
|
regcache_raw_collect (regcache, regno, buf);
|
regcache_raw_collect (regcache, regno, buf);
|
val = extract_signed_integer (buf, register_size (gdbarch, regno),
|
val = extract_signed_integer (buf, register_size (gdbarch, regno),
|
byte_order);
|
byte_order);
|
to = (gdb_byte *) (*fpregsetp + 32) + 4;
|
to = (gdb_byte *) (*fpregsetp + 32) + 4;
|
store_signed_integer (to, 4, byte_order, val);
|
store_signed_integer (to, 4, byte_order, val);
|
}
|
}
|
else if (regno == -1)
|
else if (regno == -1)
|
{
|
{
|
int regi;
|
int regi;
|
|
|
for (regi = 0; regi < 32; regi++)
|
for (regi = 0; regi < 32; regi++)
|
mips64_fill_fpregset (regcache, fpregsetp,
|
mips64_fill_fpregset (regcache, fpregsetp,
|
gdbarch_fp0_regnum (gdbarch) + regi);
|
gdbarch_fp0_regnum (gdbarch) + regi);
|
mips64_fill_fpregset (regcache, fpregsetp,
|
mips64_fill_fpregset (regcache, fpregsetp,
|
mips_regnum (gdbarch)->fp_control_status);
|
mips_regnum (gdbarch)->fp_control_status);
|
mips64_fill_fpregset (regcache, fpregsetp,
|
mips64_fill_fpregset (regcache, fpregsetp,
|
(mips_regnum (gdbarch)
|
(mips_regnum (gdbarch)
|
->fp_implementation_revision));
|
->fp_implementation_revision));
|
}
|
}
|
}
|
}
|
|
|
|
|
/* Use a local version of this function to get the correct types for
|
/* Use a local version of this function to get the correct types for
|
regsets, until multi-arch core support is ready. */
|
regsets, until multi-arch core support is ready. */
|
|
|
static void
|
static void
|
fetch_core_registers (struct regcache *regcache,
|
fetch_core_registers (struct regcache *regcache,
|
char *core_reg_sect, unsigned core_reg_size,
|
char *core_reg_sect, unsigned core_reg_size,
|
int which, CORE_ADDR reg_addr)
|
int which, CORE_ADDR reg_addr)
|
{
|
{
|
mips_elf_gregset_t gregset;
|
mips_elf_gregset_t gregset;
|
mips_elf_fpregset_t fpregset;
|
mips_elf_fpregset_t fpregset;
|
mips64_elf_gregset_t gregset64;
|
mips64_elf_gregset_t gregset64;
|
mips64_elf_fpregset_t fpregset64;
|
mips64_elf_fpregset_t fpregset64;
|
|
|
if (which == 0)
|
if (which == 0)
|
{
|
{
|
if (core_reg_size == sizeof (gregset))
|
if (core_reg_size == sizeof (gregset))
|
{
|
{
|
memcpy ((char *) &gregset, core_reg_sect, sizeof (gregset));
|
memcpy ((char *) &gregset, core_reg_sect, sizeof (gregset));
|
mips_supply_gregset (regcache,
|
mips_supply_gregset (regcache,
|
(const mips_elf_gregset_t *) &gregset);
|
(const mips_elf_gregset_t *) &gregset);
|
}
|
}
|
else if (core_reg_size == sizeof (gregset64))
|
else if (core_reg_size == sizeof (gregset64))
|
{
|
{
|
memcpy ((char *) &gregset64, core_reg_sect, sizeof (gregset64));
|
memcpy ((char *) &gregset64, core_reg_sect, sizeof (gregset64));
|
mips64_supply_gregset (regcache,
|
mips64_supply_gregset (regcache,
|
(const mips64_elf_gregset_t *) &gregset64);
|
(const mips64_elf_gregset_t *) &gregset64);
|
}
|
}
|
else
|
else
|
{
|
{
|
warning (_("wrong size gregset struct in core file"));
|
warning (_("wrong size gregset struct in core file"));
|
}
|
}
|
}
|
}
|
else if (which == 2)
|
else if (which == 2)
|
{
|
{
|
if (core_reg_size == sizeof (fpregset))
|
if (core_reg_size == sizeof (fpregset))
|
{
|
{
|
memcpy ((char *) &fpregset, core_reg_sect, sizeof (fpregset));
|
memcpy ((char *) &fpregset, core_reg_sect, sizeof (fpregset));
|
mips_supply_fpregset (regcache,
|
mips_supply_fpregset (regcache,
|
(const mips_elf_fpregset_t *) &fpregset);
|
(const mips_elf_fpregset_t *) &fpregset);
|
}
|
}
|
else if (core_reg_size == sizeof (fpregset64))
|
else if (core_reg_size == sizeof (fpregset64))
|
{
|
{
|
memcpy ((char *) &fpregset64, core_reg_sect,
|
memcpy ((char *) &fpregset64, core_reg_sect,
|
sizeof (fpregset64));
|
sizeof (fpregset64));
|
mips64_supply_fpregset (regcache,
|
mips64_supply_fpregset (regcache,
|
(const mips64_elf_fpregset_t *) &fpregset64);
|
(const mips64_elf_fpregset_t *) &fpregset64);
|
}
|
}
|
else
|
else
|
{
|
{
|
warning (_("wrong size fpregset struct in core file"));
|
warning (_("wrong size fpregset struct in core file"));
|
}
|
}
|
}
|
}
|
}
|
}
|
|
|
/* Register that we are able to handle ELF file formats using standard
|
/* Register that we are able to handle ELF file formats using standard
|
procfs "regset" structures. */
|
procfs "regset" structures. */
|
|
|
static struct core_fns regset_core_fns =
|
static struct core_fns regset_core_fns =
|
{
|
{
|
bfd_target_elf_flavour, /* core_flavour */
|
bfd_target_elf_flavour, /* core_flavour */
|
default_check_format, /* check_format */
|
default_check_format, /* check_format */
|
default_core_sniffer, /* core_sniffer */
|
default_core_sniffer, /* core_sniffer */
|
fetch_core_registers, /* core_read_registers */
|
fetch_core_registers, /* core_read_registers */
|
NULL /* next */
|
NULL /* next */
|
};
|
};
|
|
|
static const struct target_desc *
|
static const struct target_desc *
|
mips_linux_core_read_description (struct gdbarch *gdbarch,
|
mips_linux_core_read_description (struct gdbarch *gdbarch,
|
struct target_ops *target,
|
struct target_ops *target,
|
bfd *abfd)
|
bfd *abfd)
|
{
|
{
|
asection *section = bfd_get_section_by_name (abfd, ".reg");
|
asection *section = bfd_get_section_by_name (abfd, ".reg");
|
if (! section)
|
if (! section)
|
return NULL;
|
return NULL;
|
|
|
switch (bfd_section_size (abfd, section))
|
switch (bfd_section_size (abfd, section))
|
{
|
{
|
case sizeof (mips_elf_gregset_t):
|
case sizeof (mips_elf_gregset_t):
|
return mips_tdesc_gp32;
|
return mips_tdesc_gp32;
|
|
|
case sizeof (mips64_elf_gregset_t):
|
case sizeof (mips64_elf_gregset_t):
|
return mips_tdesc_gp64;
|
return mips_tdesc_gp64;
|
|
|
default:
|
default:
|
return NULL;
|
return NULL;
|
}
|
}
|
}
|
}
|
|
|
|
|
/* Check the code at PC for a dynamic linker lazy resolution stub.
|
/* Check the code at PC for a dynamic linker lazy resolution stub.
|
Because they aren't in the .plt section, we pattern-match on the
|
Because they aren't in the .plt section, we pattern-match on the
|
code generated by GNU ld. They look like this:
|
code generated by GNU ld. They look like this:
|
|
|
lw t9,0x8010(gp)
|
lw t9,0x8010(gp)
|
addu t7,ra
|
addu t7,ra
|
jalr t9,ra
|
jalr t9,ra
|
addiu t8,zero,INDEX
|
addiu t8,zero,INDEX
|
|
|
(with the appropriate doubleword instructions for N64). Also
|
(with the appropriate doubleword instructions for N64). Also
|
return the dynamic symbol index used in the last instruction. */
|
return the dynamic symbol index used in the last instruction. */
|
|
|
static int
|
static int
|
mips_linux_in_dynsym_stub (CORE_ADDR pc, char *name)
|
mips_linux_in_dynsym_stub (CORE_ADDR pc, char *name)
|
{
|
{
|
unsigned char buf[28], *p;
|
unsigned char buf[28], *p;
|
ULONGEST insn, insn1;
|
ULONGEST insn, insn1;
|
int n64 = (mips_abi (target_gdbarch) == MIPS_ABI_N64);
|
int n64 = (mips_abi (target_gdbarch) == MIPS_ABI_N64);
|
enum bfd_endian byte_order = gdbarch_byte_order (target_gdbarch);
|
enum bfd_endian byte_order = gdbarch_byte_order (target_gdbarch);
|
|
|
read_memory (pc - 12, buf, 28);
|
read_memory (pc - 12, buf, 28);
|
|
|
if (n64)
|
if (n64)
|
{
|
{
|
/* ld t9,0x8010(gp) */
|
/* ld t9,0x8010(gp) */
|
insn1 = 0xdf998010;
|
insn1 = 0xdf998010;
|
}
|
}
|
else
|
else
|
{
|
{
|
/* lw t9,0x8010(gp) */
|
/* lw t9,0x8010(gp) */
|
insn1 = 0x8f998010;
|
insn1 = 0x8f998010;
|
}
|
}
|
|
|
p = buf + 12;
|
p = buf + 12;
|
while (p >= buf)
|
while (p >= buf)
|
{
|
{
|
insn = extract_unsigned_integer (p, 4, byte_order);
|
insn = extract_unsigned_integer (p, 4, byte_order);
|
if (insn == insn1)
|
if (insn == insn1)
|
break;
|
break;
|
p -= 4;
|
p -= 4;
|
}
|
}
|
if (p < buf)
|
if (p < buf)
|
return 0;
|
return 0;
|
|
|
insn = extract_unsigned_integer (p + 4, 4, byte_order);
|
insn = extract_unsigned_integer (p + 4, 4, byte_order);
|
if (n64)
|
if (n64)
|
{
|
{
|
/* daddu t7,ra */
|
/* daddu t7,ra */
|
if (insn != 0x03e0782d)
|
if (insn != 0x03e0782d)
|
return 0;
|
return 0;
|
}
|
}
|
else
|
else
|
{
|
{
|
/* addu t7,ra */
|
/* addu t7,ra */
|
if (insn != 0x03e07821)
|
if (insn != 0x03e07821)
|
return 0;
|
return 0;
|
}
|
}
|
|
|
insn = extract_unsigned_integer (p + 8, 4, byte_order);
|
insn = extract_unsigned_integer (p + 8, 4, byte_order);
|
/* jalr t9,ra */
|
/* jalr t9,ra */
|
if (insn != 0x0320f809)
|
if (insn != 0x0320f809)
|
return 0;
|
return 0;
|
|
|
insn = extract_unsigned_integer (p + 12, 4, byte_order);
|
insn = extract_unsigned_integer (p + 12, 4, byte_order);
|
if (n64)
|
if (n64)
|
{
|
{
|
/* daddiu t8,zero,0 */
|
/* daddiu t8,zero,0 */
|
if ((insn & 0xffff0000) != 0x64180000)
|
if ((insn & 0xffff0000) != 0x64180000)
|
return 0;
|
return 0;
|
}
|
}
|
else
|
else
|
{
|
{
|
/* addiu t8,zero,0 */
|
/* addiu t8,zero,0 */
|
if ((insn & 0xffff0000) != 0x24180000)
|
if ((insn & 0xffff0000) != 0x24180000)
|
return 0;
|
return 0;
|
}
|
}
|
|
|
return (insn & 0xffff);
|
return (insn & 0xffff);
|
}
|
}
|
|
|
/* Return non-zero iff PC belongs to the dynamic linker resolution
|
/* Return non-zero iff PC belongs to the dynamic linker resolution
|
code, a PLT entry, or a lazy binding stub. */
|
code, a PLT entry, or a lazy binding stub. */
|
|
|
static int
|
static int
|
mips_linux_in_dynsym_resolve_code (CORE_ADDR pc)
|
mips_linux_in_dynsym_resolve_code (CORE_ADDR pc)
|
{
|
{
|
/* Check whether PC is in the dynamic linker. This also checks
|
/* Check whether PC is in the dynamic linker. This also checks
|
whether it is in the .plt section, used by non-PIC executables. */
|
whether it is in the .plt section, used by non-PIC executables. */
|
if (svr4_in_dynsym_resolve_code (pc))
|
if (svr4_in_dynsym_resolve_code (pc))
|
return 1;
|
return 1;
|
|
|
/* Pattern match for the stub. It would be nice if there were a
|
/* Pattern match for the stub. It would be nice if there were a
|
more efficient way to avoid this check. */
|
more efficient way to avoid this check. */
|
if (mips_linux_in_dynsym_stub (pc, NULL))
|
if (mips_linux_in_dynsym_stub (pc, NULL))
|
return 1;
|
return 1;
|
|
|
return 0;
|
return 0;
|
}
|
}
|
|
|
/* See the comments for SKIP_SOLIB_RESOLVER at the top of infrun.c,
|
/* See the comments for SKIP_SOLIB_RESOLVER at the top of infrun.c,
|
and glibc_skip_solib_resolver in glibc-tdep.c. The normal glibc
|
and glibc_skip_solib_resolver in glibc-tdep.c. The normal glibc
|
implementation of this triggers at "fixup" from the same objfile as
|
implementation of this triggers at "fixup" from the same objfile as
|
"_dl_runtime_resolve"; MIPS GNU/Linux can trigger at
|
"_dl_runtime_resolve"; MIPS GNU/Linux can trigger at
|
"__dl_runtime_resolve" directly. An unresolved lazy binding
|
"__dl_runtime_resolve" directly. An unresolved lazy binding
|
stub will point to _dl_runtime_resolve, which will first call
|
stub will point to _dl_runtime_resolve, which will first call
|
__dl_runtime_resolve, and then pass control to the resolved
|
__dl_runtime_resolve, and then pass control to the resolved
|
function. */
|
function. */
|
|
|
static CORE_ADDR
|
static CORE_ADDR
|
mips_linux_skip_resolver (struct gdbarch *gdbarch, CORE_ADDR pc)
|
mips_linux_skip_resolver (struct gdbarch *gdbarch, CORE_ADDR pc)
|
{
|
{
|
struct minimal_symbol *resolver;
|
struct minimal_symbol *resolver;
|
|
|
resolver = lookup_minimal_symbol ("__dl_runtime_resolve", NULL, NULL);
|
resolver = lookup_minimal_symbol ("__dl_runtime_resolve", NULL, NULL);
|
|
|
if (resolver && SYMBOL_VALUE_ADDRESS (resolver) == pc)
|
if (resolver && SYMBOL_VALUE_ADDRESS (resolver) == pc)
|
return frame_unwind_caller_pc (get_current_frame ());
|
return frame_unwind_caller_pc (get_current_frame ());
|
|
|
return glibc_skip_solib_resolver (gdbarch, pc);
|
return glibc_skip_solib_resolver (gdbarch, pc);
|
}
|
}
|
|
|
/* Signal trampoline support. There are four supported layouts for a
|
/* Signal trampoline support. There are four supported layouts for a
|
signal frame: o32 sigframe, o32 rt_sigframe, n32 rt_sigframe, and
|
signal frame: o32 sigframe, o32 rt_sigframe, n32 rt_sigframe, and
|
n64 rt_sigframe. We handle them all independently; not the most
|
n64 rt_sigframe. We handle them all independently; not the most
|
efficient way, but simplest. First, declare all the unwinders. */
|
efficient way, but simplest. First, declare all the unwinders. */
|
|
|
static void mips_linux_o32_sigframe_init (const struct tramp_frame *self,
|
static void mips_linux_o32_sigframe_init (const struct tramp_frame *self,
|
struct frame_info *this_frame,
|
struct frame_info *this_frame,
|
struct trad_frame_cache *this_cache,
|
struct trad_frame_cache *this_cache,
|
CORE_ADDR func);
|
CORE_ADDR func);
|
|
|
static void mips_linux_n32n64_sigframe_init (const struct tramp_frame *self,
|
static void mips_linux_n32n64_sigframe_init (const struct tramp_frame *self,
|
struct frame_info *this_frame,
|
struct frame_info *this_frame,
|
struct trad_frame_cache *this_cache,
|
struct trad_frame_cache *this_cache,
|
CORE_ADDR func);
|
CORE_ADDR func);
|
|
|
#define MIPS_NR_LINUX 4000
|
#define MIPS_NR_LINUX 4000
|
#define MIPS_NR_N64_LINUX 5000
|
#define MIPS_NR_N64_LINUX 5000
|
#define MIPS_NR_N32_LINUX 6000
|
#define MIPS_NR_N32_LINUX 6000
|
|
|
#define MIPS_NR_sigreturn MIPS_NR_LINUX + 119
|
#define MIPS_NR_sigreturn MIPS_NR_LINUX + 119
|
#define MIPS_NR_rt_sigreturn MIPS_NR_LINUX + 193
|
#define MIPS_NR_rt_sigreturn MIPS_NR_LINUX + 193
|
#define MIPS_NR_N64_rt_sigreturn MIPS_NR_N64_LINUX + 211
|
#define MIPS_NR_N64_rt_sigreturn MIPS_NR_N64_LINUX + 211
|
#define MIPS_NR_N32_rt_sigreturn MIPS_NR_N32_LINUX + 211
|
#define MIPS_NR_N32_rt_sigreturn MIPS_NR_N32_LINUX + 211
|
|
|
#define MIPS_INST_LI_V0_SIGRETURN 0x24020000 + MIPS_NR_sigreturn
|
#define MIPS_INST_LI_V0_SIGRETURN 0x24020000 + MIPS_NR_sigreturn
|
#define MIPS_INST_LI_V0_RT_SIGRETURN 0x24020000 + MIPS_NR_rt_sigreturn
|
#define MIPS_INST_LI_V0_RT_SIGRETURN 0x24020000 + MIPS_NR_rt_sigreturn
|
#define MIPS_INST_LI_V0_N64_RT_SIGRETURN 0x24020000 + MIPS_NR_N64_rt_sigreturn
|
#define MIPS_INST_LI_V0_N64_RT_SIGRETURN 0x24020000 + MIPS_NR_N64_rt_sigreturn
|
#define MIPS_INST_LI_V0_N32_RT_SIGRETURN 0x24020000 + MIPS_NR_N32_rt_sigreturn
|
#define MIPS_INST_LI_V0_N32_RT_SIGRETURN 0x24020000 + MIPS_NR_N32_rt_sigreturn
|
#define MIPS_INST_SYSCALL 0x0000000c
|
#define MIPS_INST_SYSCALL 0x0000000c
|
|
|
static const struct tramp_frame mips_linux_o32_sigframe = {
|
static const struct tramp_frame mips_linux_o32_sigframe = {
|
SIGTRAMP_FRAME,
|
SIGTRAMP_FRAME,
|
4,
|
4,
|
{
|
{
|
{ MIPS_INST_LI_V0_SIGRETURN, -1 },
|
{ MIPS_INST_LI_V0_SIGRETURN, -1 },
|
{ MIPS_INST_SYSCALL, -1 },
|
{ MIPS_INST_SYSCALL, -1 },
|
{ TRAMP_SENTINEL_INSN, -1 }
|
{ TRAMP_SENTINEL_INSN, -1 }
|
},
|
},
|
mips_linux_o32_sigframe_init
|
mips_linux_o32_sigframe_init
|
};
|
};
|
|
|
static const struct tramp_frame mips_linux_o32_rt_sigframe = {
|
static const struct tramp_frame mips_linux_o32_rt_sigframe = {
|
SIGTRAMP_FRAME,
|
SIGTRAMP_FRAME,
|
4,
|
4,
|
{
|
{
|
{ MIPS_INST_LI_V0_RT_SIGRETURN, -1 },
|
{ MIPS_INST_LI_V0_RT_SIGRETURN, -1 },
|
{ MIPS_INST_SYSCALL, -1 },
|
{ MIPS_INST_SYSCALL, -1 },
|
{ TRAMP_SENTINEL_INSN, -1 } },
|
{ TRAMP_SENTINEL_INSN, -1 } },
|
mips_linux_o32_sigframe_init
|
mips_linux_o32_sigframe_init
|
};
|
};
|
|
|
static const struct tramp_frame mips_linux_n32_rt_sigframe = {
|
static const struct tramp_frame mips_linux_n32_rt_sigframe = {
|
SIGTRAMP_FRAME,
|
SIGTRAMP_FRAME,
|
4,
|
4,
|
{
|
{
|
{ MIPS_INST_LI_V0_N32_RT_SIGRETURN, -1 },
|
{ MIPS_INST_LI_V0_N32_RT_SIGRETURN, -1 },
|
{ MIPS_INST_SYSCALL, -1 },
|
{ MIPS_INST_SYSCALL, -1 },
|
{ TRAMP_SENTINEL_INSN, -1 }
|
{ TRAMP_SENTINEL_INSN, -1 }
|
},
|
},
|
mips_linux_n32n64_sigframe_init
|
mips_linux_n32n64_sigframe_init
|
};
|
};
|
|
|
static const struct tramp_frame mips_linux_n64_rt_sigframe = {
|
static const struct tramp_frame mips_linux_n64_rt_sigframe = {
|
SIGTRAMP_FRAME,
|
SIGTRAMP_FRAME,
|
4,
|
4,
|
{
|
{
|
{ MIPS_INST_LI_V0_N64_RT_SIGRETURN, -1 },
|
{ MIPS_INST_LI_V0_N64_RT_SIGRETURN, -1 },
|
{ MIPS_INST_SYSCALL, -1 },
|
{ MIPS_INST_SYSCALL, -1 },
|
{ TRAMP_SENTINEL_INSN, -1 }
|
{ TRAMP_SENTINEL_INSN, -1 }
|
},
|
},
|
mips_linux_n32n64_sigframe_init
|
mips_linux_n32n64_sigframe_init
|
};
|
};
|
|
|
/* *INDENT-OFF* */
|
/* *INDENT-OFF* */
|
/* The unwinder for o32 signal frames. The legacy structures look
|
/* The unwinder for o32 signal frames. The legacy structures look
|
like this:
|
like this:
|
|
|
struct sigframe {
|
struct sigframe {
|
u32 sf_ass[4]; [argument save space for o32]
|
u32 sf_ass[4]; [argument save space for o32]
|
u32 sf_code[2]; [signal trampoline or fill]
|
u32 sf_code[2]; [signal trampoline or fill]
|
struct sigcontext sf_sc;
|
struct sigcontext sf_sc;
|
sigset_t sf_mask;
|
sigset_t sf_mask;
|
};
|
};
|
|
|
struct sigcontext {
|
struct sigcontext {
|
unsigned int sc_regmask; [Unused]
|
unsigned int sc_regmask; [Unused]
|
unsigned int sc_status;
|
unsigned int sc_status;
|
unsigned long long sc_pc;
|
unsigned long long sc_pc;
|
unsigned long long sc_regs[32];
|
unsigned long long sc_regs[32];
|
unsigned long long sc_fpregs[32];
|
unsigned long long sc_fpregs[32];
|
unsigned int sc_ownedfp;
|
unsigned int sc_ownedfp;
|
unsigned int sc_fpc_csr;
|
unsigned int sc_fpc_csr;
|
unsigned int sc_fpc_eir; [Unused]
|
unsigned int sc_fpc_eir; [Unused]
|
unsigned int sc_used_math;
|
unsigned int sc_used_math;
|
unsigned int sc_ssflags; [Unused]
|
unsigned int sc_ssflags; [Unused]
|
[Alignment hole of four bytes]
|
[Alignment hole of four bytes]
|
unsigned long long sc_mdhi;
|
unsigned long long sc_mdhi;
|
unsigned long long sc_mdlo;
|
unsigned long long sc_mdlo;
|
|
|
unsigned int sc_cause; [Unused]
|
unsigned int sc_cause; [Unused]
|
unsigned int sc_badvaddr; [Unused]
|
unsigned int sc_badvaddr; [Unused]
|
|
|
unsigned long sc_sigset[4]; [kernel's sigset_t]
|
unsigned long sc_sigset[4]; [kernel's sigset_t]
|
};
|
};
|
|
|
The RT signal frames look like this:
|
The RT signal frames look like this:
|
|
|
struct rt_sigframe {
|
struct rt_sigframe {
|
u32 rs_ass[4]; [argument save space for o32]
|
u32 rs_ass[4]; [argument save space for o32]
|
u32 rs_code[2] [signal trampoline or fill]
|
u32 rs_code[2] [signal trampoline or fill]
|
struct siginfo rs_info;
|
struct siginfo rs_info;
|
struct ucontext rs_uc;
|
struct ucontext rs_uc;
|
};
|
};
|
|
|
struct ucontext {
|
struct ucontext {
|
unsigned long uc_flags;
|
unsigned long uc_flags;
|
struct ucontext *uc_link;
|
struct ucontext *uc_link;
|
stack_t uc_stack;
|
stack_t uc_stack;
|
[Alignment hole of four bytes]
|
[Alignment hole of four bytes]
|
struct sigcontext uc_mcontext;
|
struct sigcontext uc_mcontext;
|
sigset_t uc_sigmask;
|
sigset_t uc_sigmask;
|
}; */
|
}; */
|
/* *INDENT-ON* */
|
/* *INDENT-ON* */
|
|
|
#define SIGFRAME_SIGCONTEXT_OFFSET (6 * 4)
|
#define SIGFRAME_SIGCONTEXT_OFFSET (6 * 4)
|
|
|
#define RTSIGFRAME_SIGINFO_SIZE 128
|
#define RTSIGFRAME_SIGINFO_SIZE 128
|
#define STACK_T_SIZE (3 * 4)
|
#define STACK_T_SIZE (3 * 4)
|
#define UCONTEXT_SIGCONTEXT_OFFSET (2 * 4 + STACK_T_SIZE + 4)
|
#define UCONTEXT_SIGCONTEXT_OFFSET (2 * 4 + STACK_T_SIZE + 4)
|
#define RTSIGFRAME_SIGCONTEXT_OFFSET (SIGFRAME_SIGCONTEXT_OFFSET \
|
#define RTSIGFRAME_SIGCONTEXT_OFFSET (SIGFRAME_SIGCONTEXT_OFFSET \
|
+ RTSIGFRAME_SIGINFO_SIZE \
|
+ RTSIGFRAME_SIGINFO_SIZE \
|
+ UCONTEXT_SIGCONTEXT_OFFSET)
|
+ UCONTEXT_SIGCONTEXT_OFFSET)
|
|
|
#define SIGCONTEXT_PC (1 * 8)
|
#define SIGCONTEXT_PC (1 * 8)
|
#define SIGCONTEXT_REGS (2 * 8)
|
#define SIGCONTEXT_REGS (2 * 8)
|
#define SIGCONTEXT_FPREGS (34 * 8)
|
#define SIGCONTEXT_FPREGS (34 * 8)
|
#define SIGCONTEXT_FPCSR (66 * 8 + 4)
|
#define SIGCONTEXT_FPCSR (66 * 8 + 4)
|
#define SIGCONTEXT_HI (69 * 8)
|
#define SIGCONTEXT_HI (69 * 8)
|
#define SIGCONTEXT_LO (70 * 8)
|
#define SIGCONTEXT_LO (70 * 8)
|
#define SIGCONTEXT_CAUSE (71 * 8 + 0)
|
#define SIGCONTEXT_CAUSE (71 * 8 + 0)
|
#define SIGCONTEXT_BADVADDR (71 * 8 + 4)
|
#define SIGCONTEXT_BADVADDR (71 * 8 + 4)
|
|
|
#define SIGCONTEXT_REG_SIZE 8
|
#define SIGCONTEXT_REG_SIZE 8
|
|
|
static void
|
static void
|
mips_linux_o32_sigframe_init (const struct tramp_frame *self,
|
mips_linux_o32_sigframe_init (const struct tramp_frame *self,
|
struct frame_info *this_frame,
|
struct frame_info *this_frame,
|
struct trad_frame_cache *this_cache,
|
struct trad_frame_cache *this_cache,
|
CORE_ADDR func)
|
CORE_ADDR func)
|
{
|
{
|
struct gdbarch *gdbarch = get_frame_arch (this_frame);
|
struct gdbarch *gdbarch = get_frame_arch (this_frame);
|
int ireg, reg_position;
|
int ireg, reg_position;
|
CORE_ADDR frame_sp = get_frame_sp (this_frame);
|
CORE_ADDR frame_sp = get_frame_sp (this_frame);
|
CORE_ADDR sigcontext_base;
|
CORE_ADDR sigcontext_base;
|
const struct mips_regnum *regs = mips_regnum (gdbarch);
|
const struct mips_regnum *regs = mips_regnum (gdbarch);
|
CORE_ADDR regs_base;
|
CORE_ADDR regs_base;
|
|
|
if (self == &mips_linux_o32_sigframe)
|
if (self == &mips_linux_o32_sigframe)
|
sigcontext_base = frame_sp + SIGFRAME_SIGCONTEXT_OFFSET;
|
sigcontext_base = frame_sp + SIGFRAME_SIGCONTEXT_OFFSET;
|
else
|
else
|
sigcontext_base = frame_sp + RTSIGFRAME_SIGCONTEXT_OFFSET;
|
sigcontext_base = frame_sp + RTSIGFRAME_SIGCONTEXT_OFFSET;
|
|
|
/* I'm not proud of this hack. Eventually we will have the
|
/* I'm not proud of this hack. Eventually we will have the
|
infrastructure to indicate the size of saved registers on a
|
infrastructure to indicate the size of saved registers on a
|
per-frame basis, but right now we don't; the kernel saves eight
|
per-frame basis, but right now we don't; the kernel saves eight
|
bytes but we only want four. Use regs_base to access any
|
bytes but we only want four. Use regs_base to access any
|
64-bit fields. */
|
64-bit fields. */
|
if (gdbarch_byte_order (gdbarch) == BFD_ENDIAN_BIG)
|
if (gdbarch_byte_order (gdbarch) == BFD_ENDIAN_BIG)
|
regs_base = sigcontext_base + 4;
|
regs_base = sigcontext_base + 4;
|
else
|
else
|
regs_base = sigcontext_base;
|
regs_base = sigcontext_base;
|
|
|
if (mips_linux_restart_reg_p (gdbarch))
|
if (mips_linux_restart_reg_p (gdbarch))
|
trad_frame_set_reg_addr (this_cache,
|
trad_frame_set_reg_addr (this_cache,
|
(MIPS_RESTART_REGNUM
|
(MIPS_RESTART_REGNUM
|
+ gdbarch_num_regs (gdbarch)),
|
+ gdbarch_num_regs (gdbarch)),
|
regs_base + SIGCONTEXT_REGS);
|
regs_base + SIGCONTEXT_REGS);
|
|
|
for (ireg = 1; ireg < 32; ireg++)
|
for (ireg = 1; ireg < 32; ireg++)
|
trad_frame_set_reg_addr (this_cache,
|
trad_frame_set_reg_addr (this_cache,
|
ireg + MIPS_ZERO_REGNUM
|
ireg + MIPS_ZERO_REGNUM
|
+ gdbarch_num_regs (gdbarch),
|
+ gdbarch_num_regs (gdbarch),
|
regs_base + SIGCONTEXT_REGS
|
regs_base + SIGCONTEXT_REGS
|
+ ireg * SIGCONTEXT_REG_SIZE);
|
+ ireg * SIGCONTEXT_REG_SIZE);
|
|
|
/* The way that floating point registers are saved, unfortunately,
|
/* The way that floating point registers are saved, unfortunately,
|
depends on the architecture the kernel is built for. For the r3000 and
|
depends on the architecture the kernel is built for. For the r3000 and
|
tx39, four bytes of each register are at the beginning of each of the
|
tx39, four bytes of each register are at the beginning of each of the
|
32 eight byte slots. For everything else, the registers are saved
|
32 eight byte slots. For everything else, the registers are saved
|
using double precision; only the even-numbered slots are initialized,
|
using double precision; only the even-numbered slots are initialized,
|
and the high bits are the odd-numbered register. Assume the latter
|
and the high bits are the odd-numbered register. Assume the latter
|
layout, since we can't tell, and it's much more common. Which bits are
|
layout, since we can't tell, and it's much more common. Which bits are
|
the "high" bits depends on endianness. */
|
the "high" bits depends on endianness. */
|
for (ireg = 0; ireg < 32; ireg++)
|
for (ireg = 0; ireg < 32; ireg++)
|
if ((gdbarch_byte_order (gdbarch) == BFD_ENDIAN_BIG) != (ireg & 1))
|
if ((gdbarch_byte_order (gdbarch) == BFD_ENDIAN_BIG) != (ireg & 1))
|
trad_frame_set_reg_addr (this_cache,
|
trad_frame_set_reg_addr (this_cache,
|
ireg + regs->fp0 +
|
ireg + regs->fp0 +
|
gdbarch_num_regs (gdbarch),
|
gdbarch_num_regs (gdbarch),
|
sigcontext_base + SIGCONTEXT_FPREGS + 4
|
sigcontext_base + SIGCONTEXT_FPREGS + 4
|
+ (ireg & ~1) * SIGCONTEXT_REG_SIZE);
|
+ (ireg & ~1) * SIGCONTEXT_REG_SIZE);
|
else
|
else
|
trad_frame_set_reg_addr (this_cache,
|
trad_frame_set_reg_addr (this_cache,
|
ireg + regs->fp0
|
ireg + regs->fp0
|
+ gdbarch_num_regs (gdbarch),
|
+ gdbarch_num_regs (gdbarch),
|
sigcontext_base + SIGCONTEXT_FPREGS
|
sigcontext_base + SIGCONTEXT_FPREGS
|
+ (ireg & ~1) * SIGCONTEXT_REG_SIZE);
|
+ (ireg & ~1) * SIGCONTEXT_REG_SIZE);
|
|
|
trad_frame_set_reg_addr (this_cache,
|
trad_frame_set_reg_addr (this_cache,
|
regs->pc + gdbarch_num_regs (gdbarch),
|
regs->pc + gdbarch_num_regs (gdbarch),
|
regs_base + SIGCONTEXT_PC);
|
regs_base + SIGCONTEXT_PC);
|
|
|
trad_frame_set_reg_addr (this_cache,
|
trad_frame_set_reg_addr (this_cache,
|
regs->fp_control_status
|
regs->fp_control_status
|
+ gdbarch_num_regs (gdbarch),
|
+ gdbarch_num_regs (gdbarch),
|
sigcontext_base + SIGCONTEXT_FPCSR);
|
sigcontext_base + SIGCONTEXT_FPCSR);
|
trad_frame_set_reg_addr (this_cache,
|
trad_frame_set_reg_addr (this_cache,
|
regs->hi + gdbarch_num_regs (gdbarch),
|
regs->hi + gdbarch_num_regs (gdbarch),
|
regs_base + SIGCONTEXT_HI);
|
regs_base + SIGCONTEXT_HI);
|
trad_frame_set_reg_addr (this_cache,
|
trad_frame_set_reg_addr (this_cache,
|
regs->lo + gdbarch_num_regs (gdbarch),
|
regs->lo + gdbarch_num_regs (gdbarch),
|
regs_base + SIGCONTEXT_LO);
|
regs_base + SIGCONTEXT_LO);
|
trad_frame_set_reg_addr (this_cache,
|
trad_frame_set_reg_addr (this_cache,
|
regs->cause + gdbarch_num_regs (gdbarch),
|
regs->cause + gdbarch_num_regs (gdbarch),
|
sigcontext_base + SIGCONTEXT_CAUSE);
|
sigcontext_base + SIGCONTEXT_CAUSE);
|
trad_frame_set_reg_addr (this_cache,
|
trad_frame_set_reg_addr (this_cache,
|
regs->badvaddr + gdbarch_num_regs (gdbarch),
|
regs->badvaddr + gdbarch_num_regs (gdbarch),
|
sigcontext_base + SIGCONTEXT_BADVADDR);
|
sigcontext_base + SIGCONTEXT_BADVADDR);
|
|
|
/* Choice of the bottom of the sigframe is somewhat arbitrary. */
|
/* Choice of the bottom of the sigframe is somewhat arbitrary. */
|
trad_frame_set_id (this_cache, frame_id_build (frame_sp, func));
|
trad_frame_set_id (this_cache, frame_id_build (frame_sp, func));
|
}
|
}
|
|
|
/* *INDENT-OFF* */
|
/* *INDENT-OFF* */
|
/* For N32/N64 things look different. There is no non-rt signal frame.
|
/* For N32/N64 things look different. There is no non-rt signal frame.
|
|
|
struct rt_sigframe_n32 {
|
struct rt_sigframe_n32 {
|
u32 rs_ass[4]; [ argument save space for o32 ]
|
u32 rs_ass[4]; [ argument save space for o32 ]
|
u32 rs_code[2]; [ signal trampoline or fill ]
|
u32 rs_code[2]; [ signal trampoline or fill ]
|
struct siginfo rs_info;
|
struct siginfo rs_info;
|
struct ucontextn32 rs_uc;
|
struct ucontextn32 rs_uc;
|
};
|
};
|
|
|
struct ucontextn32 {
|
struct ucontextn32 {
|
u32 uc_flags;
|
u32 uc_flags;
|
s32 uc_link;
|
s32 uc_link;
|
stack32_t uc_stack;
|
stack32_t uc_stack;
|
struct sigcontext uc_mcontext;
|
struct sigcontext uc_mcontext;
|
sigset_t uc_sigmask; [ mask last for extensibility ]
|
sigset_t uc_sigmask; [ mask last for extensibility ]
|
};
|
};
|
|
|
struct rt_sigframe {
|
struct rt_sigframe {
|
u32 rs_ass[4]; [ argument save space for o32 ]
|
u32 rs_ass[4]; [ argument save space for o32 ]
|
u32 rs_code[2]; [ signal trampoline ]
|
u32 rs_code[2]; [ signal trampoline ]
|
struct siginfo rs_info;
|
struct siginfo rs_info;
|
struct ucontext rs_uc;
|
struct ucontext rs_uc;
|
};
|
};
|
|
|
struct ucontext {
|
struct ucontext {
|
unsigned long uc_flags;
|
unsigned long uc_flags;
|
struct ucontext *uc_link;
|
struct ucontext *uc_link;
|
stack_t uc_stack;
|
stack_t uc_stack;
|
struct sigcontext uc_mcontext;
|
struct sigcontext uc_mcontext;
|
sigset_t uc_sigmask; [ mask last for extensibility ]
|
sigset_t uc_sigmask; [ mask last for extensibility ]
|
};
|
};
|
|
|
And the sigcontext is different (this is for both n32 and n64):
|
And the sigcontext is different (this is for both n32 and n64):
|
|
|
struct sigcontext {
|
struct sigcontext {
|
unsigned long long sc_regs[32];
|
unsigned long long sc_regs[32];
|
unsigned long long sc_fpregs[32];
|
unsigned long long sc_fpregs[32];
|
unsigned long long sc_mdhi;
|
unsigned long long sc_mdhi;
|
unsigned long long sc_hi1;
|
unsigned long long sc_hi1;
|
unsigned long long sc_hi2;
|
unsigned long long sc_hi2;
|
unsigned long long sc_hi3;
|
unsigned long long sc_hi3;
|
unsigned long long sc_mdlo;
|
unsigned long long sc_mdlo;
|
unsigned long long sc_lo1;
|
unsigned long long sc_lo1;
|
unsigned long long sc_lo2;
|
unsigned long long sc_lo2;
|
unsigned long long sc_lo3;
|
unsigned long long sc_lo3;
|
unsigned long long sc_pc;
|
unsigned long long sc_pc;
|
unsigned int sc_fpc_csr;
|
unsigned int sc_fpc_csr;
|
unsigned int sc_used_math;
|
unsigned int sc_used_math;
|
unsigned int sc_dsp;
|
unsigned int sc_dsp;
|
unsigned int sc_reserved;
|
unsigned int sc_reserved;
|
};
|
};
|
|
|
That is the post-2.6.12 definition of the 64-bit sigcontext; before
|
That is the post-2.6.12 definition of the 64-bit sigcontext; before
|
then, there were no hi1-hi3 or lo1-lo3. Cause and badvaddr were
|
then, there were no hi1-hi3 or lo1-lo3. Cause and badvaddr were
|
included too. */
|
included too. */
|
/* *INDENT-ON* */
|
/* *INDENT-ON* */
|
|
|
#define N32_STACK_T_SIZE STACK_T_SIZE
|
#define N32_STACK_T_SIZE STACK_T_SIZE
|
#define N64_STACK_T_SIZE (2 * 8 + 4)
|
#define N64_STACK_T_SIZE (2 * 8 + 4)
|
#define N32_UCONTEXT_SIGCONTEXT_OFFSET (2 * 4 + N32_STACK_T_SIZE + 4)
|
#define N32_UCONTEXT_SIGCONTEXT_OFFSET (2 * 4 + N32_STACK_T_SIZE + 4)
|
#define N64_UCONTEXT_SIGCONTEXT_OFFSET (2 * 8 + N64_STACK_T_SIZE + 4)
|
#define N64_UCONTEXT_SIGCONTEXT_OFFSET (2 * 8 + N64_STACK_T_SIZE + 4)
|
#define N32_SIGFRAME_SIGCONTEXT_OFFSET (SIGFRAME_SIGCONTEXT_OFFSET \
|
#define N32_SIGFRAME_SIGCONTEXT_OFFSET (SIGFRAME_SIGCONTEXT_OFFSET \
|
+ RTSIGFRAME_SIGINFO_SIZE \
|
+ RTSIGFRAME_SIGINFO_SIZE \
|
+ N32_UCONTEXT_SIGCONTEXT_OFFSET)
|
+ N32_UCONTEXT_SIGCONTEXT_OFFSET)
|
#define N64_SIGFRAME_SIGCONTEXT_OFFSET (SIGFRAME_SIGCONTEXT_OFFSET \
|
#define N64_SIGFRAME_SIGCONTEXT_OFFSET (SIGFRAME_SIGCONTEXT_OFFSET \
|
+ RTSIGFRAME_SIGINFO_SIZE \
|
+ RTSIGFRAME_SIGINFO_SIZE \
|
+ N64_UCONTEXT_SIGCONTEXT_OFFSET)
|
+ N64_UCONTEXT_SIGCONTEXT_OFFSET)
|
|
|
#define N64_SIGCONTEXT_REGS (0 * 8)
|
#define N64_SIGCONTEXT_REGS (0 * 8)
|
#define N64_SIGCONTEXT_FPREGS (32 * 8)
|
#define N64_SIGCONTEXT_FPREGS (32 * 8)
|
#define N64_SIGCONTEXT_HI (64 * 8)
|
#define N64_SIGCONTEXT_HI (64 * 8)
|
#define N64_SIGCONTEXT_LO (68 * 8)
|
#define N64_SIGCONTEXT_LO (68 * 8)
|
#define N64_SIGCONTEXT_PC (72 * 8)
|
#define N64_SIGCONTEXT_PC (72 * 8)
|
#define N64_SIGCONTEXT_FPCSR (73 * 8)
|
#define N64_SIGCONTEXT_FPCSR (73 * 8)
|
|
|
#define N64_SIGCONTEXT_REG_SIZE 8
|
#define N64_SIGCONTEXT_REG_SIZE 8
|
|
|
static void
|
static void
|
mips_linux_n32n64_sigframe_init (const struct tramp_frame *self,
|
mips_linux_n32n64_sigframe_init (const struct tramp_frame *self,
|
struct frame_info *this_frame,
|
struct frame_info *this_frame,
|
struct trad_frame_cache *this_cache,
|
struct trad_frame_cache *this_cache,
|
CORE_ADDR func)
|
CORE_ADDR func)
|
{
|
{
|
struct gdbarch *gdbarch = get_frame_arch (this_frame);
|
struct gdbarch *gdbarch = get_frame_arch (this_frame);
|
int ireg, reg_position;
|
int ireg, reg_position;
|
CORE_ADDR frame_sp = get_frame_sp (this_frame);
|
CORE_ADDR frame_sp = get_frame_sp (this_frame);
|
CORE_ADDR sigcontext_base;
|
CORE_ADDR sigcontext_base;
|
const struct mips_regnum *regs = mips_regnum (gdbarch);
|
const struct mips_regnum *regs = mips_regnum (gdbarch);
|
|
|
if (self == &mips_linux_n32_rt_sigframe)
|
if (self == &mips_linux_n32_rt_sigframe)
|
sigcontext_base = frame_sp + N32_SIGFRAME_SIGCONTEXT_OFFSET;
|
sigcontext_base = frame_sp + N32_SIGFRAME_SIGCONTEXT_OFFSET;
|
else
|
else
|
sigcontext_base = frame_sp + N64_SIGFRAME_SIGCONTEXT_OFFSET;
|
sigcontext_base = frame_sp + N64_SIGFRAME_SIGCONTEXT_OFFSET;
|
|
|
if (mips_linux_restart_reg_p (gdbarch))
|
if (mips_linux_restart_reg_p (gdbarch))
|
trad_frame_set_reg_addr (this_cache,
|
trad_frame_set_reg_addr (this_cache,
|
(MIPS_RESTART_REGNUM
|
(MIPS_RESTART_REGNUM
|
+ gdbarch_num_regs (gdbarch)),
|
+ gdbarch_num_regs (gdbarch)),
|
sigcontext_base + N64_SIGCONTEXT_REGS);
|
sigcontext_base + N64_SIGCONTEXT_REGS);
|
|
|
for (ireg = 1; ireg < 32; ireg++)
|
for (ireg = 1; ireg < 32; ireg++)
|
trad_frame_set_reg_addr (this_cache,
|
trad_frame_set_reg_addr (this_cache,
|
ireg + MIPS_ZERO_REGNUM
|
ireg + MIPS_ZERO_REGNUM
|
+ gdbarch_num_regs (gdbarch),
|
+ gdbarch_num_regs (gdbarch),
|
sigcontext_base + N64_SIGCONTEXT_REGS
|
sigcontext_base + N64_SIGCONTEXT_REGS
|
+ ireg * N64_SIGCONTEXT_REG_SIZE);
|
+ ireg * N64_SIGCONTEXT_REG_SIZE);
|
|
|
for (ireg = 0; ireg < 32; ireg++)
|
for (ireg = 0; ireg < 32; ireg++)
|
trad_frame_set_reg_addr (this_cache,
|
trad_frame_set_reg_addr (this_cache,
|
ireg + regs->fp0
|
ireg + regs->fp0
|
+ gdbarch_num_regs (gdbarch),
|
+ gdbarch_num_regs (gdbarch),
|
sigcontext_base + N64_SIGCONTEXT_FPREGS
|
sigcontext_base + N64_SIGCONTEXT_FPREGS
|
+ ireg * N64_SIGCONTEXT_REG_SIZE);
|
+ ireg * N64_SIGCONTEXT_REG_SIZE);
|
|
|
trad_frame_set_reg_addr (this_cache,
|
trad_frame_set_reg_addr (this_cache,
|
regs->pc + gdbarch_num_regs (gdbarch),
|
regs->pc + gdbarch_num_regs (gdbarch),
|
sigcontext_base + N64_SIGCONTEXT_PC);
|
sigcontext_base + N64_SIGCONTEXT_PC);
|
|
|
trad_frame_set_reg_addr (this_cache,
|
trad_frame_set_reg_addr (this_cache,
|
regs->fp_control_status
|
regs->fp_control_status
|
+ gdbarch_num_regs (gdbarch),
|
+ gdbarch_num_regs (gdbarch),
|
sigcontext_base + N64_SIGCONTEXT_FPCSR);
|
sigcontext_base + N64_SIGCONTEXT_FPCSR);
|
trad_frame_set_reg_addr (this_cache,
|
trad_frame_set_reg_addr (this_cache,
|
regs->hi + gdbarch_num_regs (gdbarch),
|
regs->hi + gdbarch_num_regs (gdbarch),
|
sigcontext_base + N64_SIGCONTEXT_HI);
|
sigcontext_base + N64_SIGCONTEXT_HI);
|
trad_frame_set_reg_addr (this_cache,
|
trad_frame_set_reg_addr (this_cache,
|
regs->lo + gdbarch_num_regs (gdbarch),
|
regs->lo + gdbarch_num_regs (gdbarch),
|
sigcontext_base + N64_SIGCONTEXT_LO);
|
sigcontext_base + N64_SIGCONTEXT_LO);
|
|
|
/* Choice of the bottom of the sigframe is somewhat arbitrary. */
|
/* Choice of the bottom of the sigframe is somewhat arbitrary. */
|
trad_frame_set_id (this_cache, frame_id_build (frame_sp, func));
|
trad_frame_set_id (this_cache, frame_id_build (frame_sp, func));
|
}
|
}
|
|
|
static void
|
static void
|
mips_linux_write_pc (struct regcache *regcache, CORE_ADDR pc)
|
mips_linux_write_pc (struct regcache *regcache, CORE_ADDR pc)
|
{
|
{
|
struct gdbarch *gdbarch = get_regcache_arch (regcache);
|
struct gdbarch *gdbarch = get_regcache_arch (regcache);
|
regcache_cooked_write_unsigned (regcache, gdbarch_pc_regnum (gdbarch), pc);
|
regcache_cooked_write_unsigned (regcache, gdbarch_pc_regnum (gdbarch), pc);
|
|
|
/* Clear the syscall restart flag. */
|
/* Clear the syscall restart flag. */
|
if (mips_linux_restart_reg_p (gdbarch))
|
if (mips_linux_restart_reg_p (gdbarch))
|
regcache_cooked_write_unsigned (regcache, MIPS_RESTART_REGNUM, 0);
|
regcache_cooked_write_unsigned (regcache, MIPS_RESTART_REGNUM, 0);
|
}
|
}
|
|
|
/* Return 1 if MIPS_RESTART_REGNUM is usable. */
|
/* Return 1 if MIPS_RESTART_REGNUM is usable. */
|
|
|
int
|
int
|
mips_linux_restart_reg_p (struct gdbarch *gdbarch)
|
mips_linux_restart_reg_p (struct gdbarch *gdbarch)
|
{
|
{
|
/* If we do not have a target description with registers, then
|
/* If we do not have a target description with registers, then
|
MIPS_RESTART_REGNUM will not be included in the register set. */
|
MIPS_RESTART_REGNUM will not be included in the register set. */
|
if (!tdesc_has_registers (gdbarch_target_desc (gdbarch)))
|
if (!tdesc_has_registers (gdbarch_target_desc (gdbarch)))
|
return 0;
|
return 0;
|
|
|
/* If we do, then MIPS_RESTART_REGNUM is safe to check; it will
|
/* If we do, then MIPS_RESTART_REGNUM is safe to check; it will
|
either be GPR-sized or missing. */
|
either be GPR-sized or missing. */
|
return register_size (gdbarch, MIPS_RESTART_REGNUM) > 0;
|
return register_size (gdbarch, MIPS_RESTART_REGNUM) > 0;
|
}
|
}
|
|
|
/* When FRAME is at a syscall instruction, return the PC of the next
|
/* When FRAME is at a syscall instruction, return the PC of the next
|
instruction to be executed. */
|
instruction to be executed. */
|
|
|
static CORE_ADDR
|
static CORE_ADDR
|
mips_linux_syscall_next_pc (struct frame_info *frame)
|
mips_linux_syscall_next_pc (struct frame_info *frame)
|
{
|
{
|
CORE_ADDR pc = get_frame_pc (frame);
|
CORE_ADDR pc = get_frame_pc (frame);
|
ULONGEST v0 = get_frame_register_unsigned (frame, MIPS_V0_REGNUM);
|
ULONGEST v0 = get_frame_register_unsigned (frame, MIPS_V0_REGNUM);
|
|
|
/* If we are about to make a sigreturn syscall, use the unwinder to
|
/* If we are about to make a sigreturn syscall, use the unwinder to
|
decode the signal frame. */
|
decode the signal frame. */
|
if (v0 == MIPS_NR_sigreturn
|
if (v0 == MIPS_NR_sigreturn
|
|| v0 == MIPS_NR_rt_sigreturn
|
|| v0 == MIPS_NR_rt_sigreturn
|
|| v0 == MIPS_NR_N64_rt_sigreturn
|
|| v0 == MIPS_NR_N64_rt_sigreturn
|
|| v0 == MIPS_NR_N32_rt_sigreturn)
|
|| v0 == MIPS_NR_N32_rt_sigreturn)
|
return frame_unwind_caller_pc (get_current_frame ());
|
return frame_unwind_caller_pc (get_current_frame ());
|
|
|
return pc + 4;
|
return pc + 4;
|
}
|
}
|
|
|
/* Initialize one of the GNU/Linux OS ABIs. */
|
/* Initialize one of the GNU/Linux OS ABIs. */
|
|
|
static void
|
static void
|
mips_linux_init_abi (struct gdbarch_info info,
|
mips_linux_init_abi (struct gdbarch_info info,
|
struct gdbarch *gdbarch)
|
struct gdbarch *gdbarch)
|
{
|
{
|
struct gdbarch_tdep *tdep = gdbarch_tdep (gdbarch);
|
struct gdbarch_tdep *tdep = gdbarch_tdep (gdbarch);
|
enum mips_abi abi = mips_abi (gdbarch);
|
enum mips_abi abi = mips_abi (gdbarch);
|
struct tdesc_arch_data *tdesc_data = (void *) info.tdep_info;
|
struct tdesc_arch_data *tdesc_data = (void *) info.tdep_info;
|
|
|
switch (abi)
|
switch (abi)
|
{
|
{
|
case MIPS_ABI_O32:
|
case MIPS_ABI_O32:
|
set_gdbarch_get_longjmp_target (gdbarch,
|
set_gdbarch_get_longjmp_target (gdbarch,
|
mips_linux_get_longjmp_target);
|
mips_linux_get_longjmp_target);
|
set_solib_svr4_fetch_link_map_offsets
|
set_solib_svr4_fetch_link_map_offsets
|
(gdbarch, svr4_ilp32_fetch_link_map_offsets);
|
(gdbarch, svr4_ilp32_fetch_link_map_offsets);
|
tramp_frame_prepend_unwinder (gdbarch, &mips_linux_o32_sigframe);
|
tramp_frame_prepend_unwinder (gdbarch, &mips_linux_o32_sigframe);
|
tramp_frame_prepend_unwinder (gdbarch, &mips_linux_o32_rt_sigframe);
|
tramp_frame_prepend_unwinder (gdbarch, &mips_linux_o32_rt_sigframe);
|
break;
|
break;
|
case MIPS_ABI_N32:
|
case MIPS_ABI_N32:
|
set_gdbarch_get_longjmp_target (gdbarch,
|
set_gdbarch_get_longjmp_target (gdbarch,
|
mips_linux_get_longjmp_target);
|
mips_linux_get_longjmp_target);
|
set_solib_svr4_fetch_link_map_offsets
|
set_solib_svr4_fetch_link_map_offsets
|
(gdbarch, svr4_ilp32_fetch_link_map_offsets);
|
(gdbarch, svr4_ilp32_fetch_link_map_offsets);
|
set_gdbarch_long_double_bit (gdbarch, 128);
|
set_gdbarch_long_double_bit (gdbarch, 128);
|
/* These floatformats should probably be renamed. MIPS uses
|
/* These floatformats should probably be renamed. MIPS uses
|
the same 128-bit IEEE floating point format that IA-64 uses,
|
the same 128-bit IEEE floating point format that IA-64 uses,
|
except that the quiet/signalling NaN bit is reversed (GDB
|
except that the quiet/signalling NaN bit is reversed (GDB
|
does not distinguish between quiet and signalling NaNs). */
|
does not distinguish between quiet and signalling NaNs). */
|
set_gdbarch_long_double_format (gdbarch, floatformats_ia64_quad);
|
set_gdbarch_long_double_format (gdbarch, floatformats_ia64_quad);
|
tramp_frame_prepend_unwinder (gdbarch, &mips_linux_n32_rt_sigframe);
|
tramp_frame_prepend_unwinder (gdbarch, &mips_linux_n32_rt_sigframe);
|
break;
|
break;
|
case MIPS_ABI_N64:
|
case MIPS_ABI_N64:
|
set_gdbarch_get_longjmp_target (gdbarch,
|
set_gdbarch_get_longjmp_target (gdbarch,
|
mips64_linux_get_longjmp_target);
|
mips64_linux_get_longjmp_target);
|
set_solib_svr4_fetch_link_map_offsets
|
set_solib_svr4_fetch_link_map_offsets
|
(gdbarch, svr4_lp64_fetch_link_map_offsets);
|
(gdbarch, svr4_lp64_fetch_link_map_offsets);
|
set_gdbarch_long_double_bit (gdbarch, 128);
|
set_gdbarch_long_double_bit (gdbarch, 128);
|
/* These floatformats should probably be renamed. MIPS uses
|
/* These floatformats should probably be renamed. MIPS uses
|
the same 128-bit IEEE floating point format that IA-64 uses,
|
the same 128-bit IEEE floating point format that IA-64 uses,
|
except that the quiet/signalling NaN bit is reversed (GDB
|
except that the quiet/signalling NaN bit is reversed (GDB
|
does not distinguish between quiet and signalling NaNs). */
|
does not distinguish between quiet and signalling NaNs). */
|
set_gdbarch_long_double_format (gdbarch, floatformats_ia64_quad);
|
set_gdbarch_long_double_format (gdbarch, floatformats_ia64_quad);
|
tramp_frame_prepend_unwinder (gdbarch, &mips_linux_n64_rt_sigframe);
|
tramp_frame_prepend_unwinder (gdbarch, &mips_linux_n64_rt_sigframe);
|
break;
|
break;
|
default:
|
default:
|
break;
|
break;
|
}
|
}
|
|
|
set_gdbarch_skip_solib_resolver (gdbarch, mips_linux_skip_resolver);
|
set_gdbarch_skip_solib_resolver (gdbarch, mips_linux_skip_resolver);
|
|
|
set_gdbarch_software_single_step (gdbarch, mips_software_single_step);
|
set_gdbarch_software_single_step (gdbarch, mips_software_single_step);
|
|
|
/* Enable TLS support. */
|
/* Enable TLS support. */
|
set_gdbarch_fetch_tls_load_module_address (gdbarch,
|
set_gdbarch_fetch_tls_load_module_address (gdbarch,
|
svr4_fetch_objfile_link_map);
|
svr4_fetch_objfile_link_map);
|
|
|
/* Initialize this lazily, to avoid an initialization order
|
/* Initialize this lazily, to avoid an initialization order
|
dependency on solib-svr4.c's _initialize routine. */
|
dependency on solib-svr4.c's _initialize routine. */
|
if (mips_svr4_so_ops.in_dynsym_resolve_code == NULL)
|
if (mips_svr4_so_ops.in_dynsym_resolve_code == NULL)
|
{
|
{
|
mips_svr4_so_ops = svr4_so_ops;
|
mips_svr4_so_ops = svr4_so_ops;
|
mips_svr4_so_ops.in_dynsym_resolve_code
|
mips_svr4_so_ops.in_dynsym_resolve_code
|
= mips_linux_in_dynsym_resolve_code;
|
= mips_linux_in_dynsym_resolve_code;
|
}
|
}
|
set_solib_ops (gdbarch, &mips_svr4_so_ops);
|
set_solib_ops (gdbarch, &mips_svr4_so_ops);
|
|
|
set_gdbarch_write_pc (gdbarch, mips_linux_write_pc);
|
set_gdbarch_write_pc (gdbarch, mips_linux_write_pc);
|
|
|
set_gdbarch_core_read_description (gdbarch,
|
set_gdbarch_core_read_description (gdbarch,
|
mips_linux_core_read_description);
|
mips_linux_core_read_description);
|
|
|
tdep->syscall_next_pc = mips_linux_syscall_next_pc;
|
tdep->syscall_next_pc = mips_linux_syscall_next_pc;
|
|
|
if (tdesc_data)
|
if (tdesc_data)
|
{
|
{
|
const struct tdesc_feature *feature;
|
const struct tdesc_feature *feature;
|
|
|
/* If we have target-described registers, then we can safely
|
/* If we have target-described registers, then we can safely
|
reserve a number for MIPS_RESTART_REGNUM (whether it is
|
reserve a number for MIPS_RESTART_REGNUM (whether it is
|
described or not). */
|
described or not). */
|
gdb_assert (gdbarch_num_regs (gdbarch) <= MIPS_RESTART_REGNUM);
|
gdb_assert (gdbarch_num_regs (gdbarch) <= MIPS_RESTART_REGNUM);
|
set_gdbarch_num_regs (gdbarch, MIPS_RESTART_REGNUM + 1);
|
set_gdbarch_num_regs (gdbarch, MIPS_RESTART_REGNUM + 1);
|
|
|
/* If it's present, then assign it to the reserved number. */
|
/* If it's present, then assign it to the reserved number. */
|
feature = tdesc_find_feature (info.target_desc,
|
feature = tdesc_find_feature (info.target_desc,
|
"org.gnu.gdb.mips.linux");
|
"org.gnu.gdb.mips.linux");
|
if (feature != NULL)
|
if (feature != NULL)
|
tdesc_numbered_register (feature, tdesc_data, MIPS_RESTART_REGNUM,
|
tdesc_numbered_register (feature, tdesc_data, MIPS_RESTART_REGNUM,
|
"restart");
|
"restart");
|
}
|
}
|
}
|
}
|
|
|
/* Provide a prototype to silence -Wmissing-prototypes. */
|
/* Provide a prototype to silence -Wmissing-prototypes. */
|
extern initialize_file_ftype _initialize_mips_linux_tdep;
|
extern initialize_file_ftype _initialize_mips_linux_tdep;
|
|
|
void
|
void
|
_initialize_mips_linux_tdep (void)
|
_initialize_mips_linux_tdep (void)
|
{
|
{
|
const struct bfd_arch_info *arch_info;
|
const struct bfd_arch_info *arch_info;
|
|
|
for (arch_info = bfd_lookup_arch (bfd_arch_mips, 0);
|
for (arch_info = bfd_lookup_arch (bfd_arch_mips, 0);
|
arch_info != NULL;
|
arch_info != NULL;
|
arch_info = arch_info->next)
|
arch_info = arch_info->next)
|
{
|
{
|
gdbarch_register_osabi (bfd_arch_mips, arch_info->mach,
|
gdbarch_register_osabi (bfd_arch_mips, arch_info->mach,
|
GDB_OSABI_LINUX,
|
GDB_OSABI_LINUX,
|
mips_linux_init_abi);
|
mips_linux_init_abi);
|
}
|
}
|
|
|
deprecated_add_core_fns (®set_core_fns);
|
deprecated_add_core_fns (®set_core_fns);
|
}
|
}
|
|
|
