diff options
| -rw-r--r-- | gdb/ChangeLog | 9 | ||||
| -rw-r--r-- | gdb/Makefile.in | 2 | ||||
| -rw-r--r-- | gdb/NEWS | 1 | ||||
| -rw-r--r-- | gdb/configure.tgt | 5 | ||||
| -rw-r--r-- | gdb/doc/ChangeLog | 5 | ||||
| -rw-r--r-- | gdb/doc/gdb.texinfo | 5 | ||||
| -rw-r--r-- | gdb/mips-fbsd-tdep.c | 560 | ||||
| -rw-r--r-- | gdb/mips-fbsd-tdep.h | 28 |
8 files changed, 615 insertions, 0 deletions
diff --git a/gdb/ChangeLog b/gdb/ChangeLog index 1765543..263646f 100644 --- a/gdb/ChangeLog +++ b/gdb/ChangeLog @@ -1,3 +1,12 @@ +2017-01-04 John Baldwin <jhb@FreeBSD.org> + + * Makefile.in (ALL_TARGET_OBS): Add mips-fbsd-tdep.o. + (ALLDEPFILES): Add mips-fbsd-tdep.c. + * NEWS: Mention new FreeBSD/mips target. + * configure.tgt: Add mips*-*-freebsd*. + * mips-fbsd-tdep.c: New file. + * mips-fbsd-tdep.h: New file. + 2017-01-04 Yao Qi <yao.qi@linaro.org> * dwarf2loc.c (write_pieced_value): Don't use VALUE_FRAME_ID (to), diff --git a/gdb/Makefile.in b/gdb/Makefile.in index 006ff64..f20b973 100644 --- a/gdb/Makefile.in +++ b/gdb/Makefile.in @@ -817,6 +817,7 @@ ALL_TARGET_OBS = \ mep-tdep.o \ microblaze-linux-tdep.o \ microblaze-tdep.o \ + mips-fbsd-tdep.o \ mips-linux-tdep.o \ mips-nbsd-tdep.o \ mips-sde-tdep.o \ @@ -2540,6 +2541,7 @@ ALLDEPFILES = \ microblaze-linux-tdep.c \ microblaze-tdep.c \ mingw-hdep.c \ + mips-fbsd-tdep.c \ mips-linux-nat.c \ mips-linux-tdep.c \ mips-nbsd-nat.c \ @@ -50,6 +50,7 @@ * New targets Synopsys ARC arc*-*-elf32 +FreeBSD/mips mips*-*-freebsd *** Changes in GDB 7.12 diff --git a/gdb/configure.tgt b/gdb/configure.tgt index 3f2603d..cb909e7 100644 --- a/gdb/configure.tgt +++ b/gdb/configure.tgt @@ -369,6 +369,11 @@ mips*-*-netbsd* | mips*-*-knetbsd*-gnu) gdb_target_obs="mips-tdep.o mips-nbsd-tdep.o solib-svr4.o nbsd-tdep.o" gdb_sim=../sim/mips/libsim.a ;; +mips*-*-freebsd*) + # Target: MIPS running FreeBSD + gdb_target_obs="mips-tdep.o mips-fbsd-tdep.o solib-svr4.o fbsd-tdep.o" + gdb_sim=../sim/mips/libsim.a + ;; mips64*-*-openbsd*) # Target: OpenBSD/mips64 gdb_target_obs="mips-tdep.o mips64-obsd-tdep.o obsd-tdep.o solib-svr4.o" diff --git a/gdb/doc/ChangeLog b/gdb/doc/ChangeLog index eb6e82a..4c6e718 100644 --- a/gdb/doc/ChangeLog +++ b/gdb/doc/ChangeLog @@ -1,3 +1,8 @@ +2017-01-04 John Baldwin <jhb@FreeBSD.org> + + * gdb.texinfo (Contributors): Add SRI International and University + of Cambridge for FreeBSD/mips. + 2016-12-22 Doug Evans <xdje42@gmail.com> * gdb.texinfo (Symbols): Update docs for symbol printing maintenance diff --git a/gdb/doc/gdb.texinfo b/gdb/doc/gdb.texinfo index ccb95ad..2b6b654 100644 --- a/gdb/doc/gdb.texinfo +++ b/gdb/doc/gdb.texinfo @@ -541,6 +541,11 @@ Steve Tjiang, John Newlin, and Scott Foehner. Michael Eager and staff of Xilinx, Inc., contributed support for the Xilinx MicroBlaze architecture. +Initial support for the FreeBSD/mips target and native configuration +was developed by SRI International and the University of Cambridge +Computer Laboratory under DARPA/AFRL contract FA8750-10-C-0237 +("CTSRD"), as part of the DARPA CRASH research programme. + @node Sample Session @chapter A Sample @value{GDBN} Session diff --git a/gdb/mips-fbsd-tdep.c b/gdb/mips-fbsd-tdep.c new file mode 100644 index 0000000..733534d --- /dev/null +++ b/gdb/mips-fbsd-tdep.c @@ -0,0 +1,560 @@ +/* Target-dependent code for FreeBSD/mips. + + Copyright (C) 2017 Free Software Foundation, Inc. + + This file is part of GDB. + + This program is free software; you can redistribute it and/or modify + it under the terms of the GNU General Public License as published by + the Free Software Foundation; either version 3 of the License, or + (at your option) any later version. + + This program is distributed in the hope that it will be useful, + but WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + GNU General Public License for more details. + + You should have received a copy of the GNU General Public License + along with this program. If not, see <http://www.gnu.org/licenses/>. */ + +#include "defs.h" +#include "osabi.h" +#include "regset.h" +#include "trad-frame.h" +#include "tramp-frame.h" + +#include "fbsd-tdep.h" +#include "mips-tdep.h" +#include "mips-fbsd-tdep.h" + +#include "solib-svr4.h" + +/* Shorthand for some register numbers used below. */ +#define MIPS_PC_REGNUM MIPS_EMBED_PC_REGNUM +#define MIPS_FP0_REGNUM MIPS_EMBED_FP0_REGNUM +#define MIPS_FSR_REGNUM MIPS_EMBED_FP0_REGNUM + 32 + +/* Core file support. */ + +/* Number of registers in `struct reg' from <machine/reg.h>. The + first 38 follow the standard MIPS layout. The 39th holds + IC_INT_REG on RM7K and RM9K processors. The 40th is a dummy for + padding. */ +#define MIPS_FBSD_NUM_GREGS 40 + +/* Number of registers in `struct fpreg' from <machine/reg.h>. The + first 32 hold floating point registers. 33 holds the FSR. The + 34th is a dummy for padding. */ +#define MIPS_FBSD_NUM_FPREGS 34 + +/* Supply a single register. If the source register size matches the + size the regcache expects, this can use regcache_raw_supply(). If + they are different, this copies the source register into a buffer + that can be passed to regcache_raw_supply(). */ + +static void +mips_fbsd_supply_reg (struct regcache *regcache, int regnum, const void *addr, + size_t len) +{ + struct gdbarch *gdbarch = get_regcache_arch (regcache); + + if (register_size (gdbarch, regnum) == len) + regcache_raw_supply (regcache, regnum, addr); + else + { + enum bfd_endian byte_order = gdbarch_byte_order (gdbarch); + gdb_byte buf[MAX_REGISTER_SIZE]; + LONGEST val; + + val = extract_signed_integer ((const gdb_byte *) addr, len, byte_order); + store_signed_integer (buf, register_size (gdbarch, regnum), byte_order, + val); + regcache_raw_supply (regcache, regnum, buf); + } +} + +/* Collect a single register. If the destination register size + matches the size the regcache expects, this can use + regcache_raw_supply(). If they are different, this fetches the + register via regcache_raw_supply() into a buffer and then copies it + into the final destination. */ + +static void +mips_fbsd_collect_reg (const struct regcache *regcache, int regnum, void *addr, + size_t len) +{ + struct gdbarch *gdbarch = get_regcache_arch (regcache); + + if (register_size (gdbarch, regnum) == len) + regcache_raw_collect (regcache, regnum, addr); + else + { + enum bfd_endian byte_order = gdbarch_byte_order (gdbarch); + gdb_byte buf[MAX_REGISTER_SIZE]; + LONGEST val; + + regcache_raw_collect (regcache, regnum, buf); + val = extract_signed_integer (buf, register_size (gdbarch, regnum), + byte_order); + store_signed_integer ((gdb_byte *) addr, len, byte_order, val); + } +} + +/* Supply the floating-point registers stored in FPREGS to REGCACHE. + Each floating-point register in FPREGS is REGSIZE bytes in + length. */ + +void +mips_fbsd_supply_fpregs (struct regcache *regcache, int regnum, + const void *fpregs, size_t regsize) +{ + const gdb_byte *regs = (const gdb_byte *) fpregs; + int i; + + for (i = MIPS_FP0_REGNUM; i <= MIPS_FSR_REGNUM; i++) + if (regnum == i || regnum == -1) + mips_fbsd_supply_reg (regcache, i, + regs + (i - MIPS_FP0_REGNUM) * regsize, regsize); +} + +/* Supply the general-purpose registers stored in GREGS to REGCACHE. + Each general-purpose register in GREGS is REGSIZE bytes in + length. */ + +void +mips_fbsd_supply_gregs (struct regcache *regcache, int regnum, + const void *gregs, size_t regsize) +{ + const gdb_byte *regs = (const gdb_byte *) gregs; + int i; + + for (i = 0; i <= MIPS_PC_REGNUM; i++) + if (regnum == i || regnum == -1) + mips_fbsd_supply_reg (regcache, i, regs + i * regsize, regsize); +} + +/* Collect the floating-point registers from REGCACHE and store them + in FPREGS. Each floating-point register in FPREGS is REGSIZE bytes + in length. */ + +void +mips_fbsd_collect_fpregs (const struct regcache *regcache, int regnum, + void *fpregs, size_t regsize) +{ + gdb_byte *regs = (gdb_byte *) fpregs; + int i; + + for (i = MIPS_FP0_REGNUM; i <= MIPS_FSR_REGNUM; i++) + if (regnum == i || regnum == -1) + mips_fbsd_collect_reg (regcache, i, + regs + (i - MIPS_FP0_REGNUM) * regsize, regsize); +} + +/* Collect the general-purpose registers from REGCACHE and store them + in GREGS. Each general-purpose register in GREGS is REGSIZE bytes + in length. */ + +void +mips_fbsd_collect_gregs (const struct regcache *regcache, int regnum, + void *gregs, size_t regsize) +{ + gdb_byte *regs = (gdb_byte *) gregs; + int i; + + for (i = 0; i <= MIPS_PC_REGNUM; i++) + if (regnum == i || regnum == -1) + mips_fbsd_collect_reg (regcache, i, regs + i * regsize, regsize); +} + +/* Supply register REGNUM from the buffer specified by FPREGS and LEN + in the floating-point register set REGSET to register cache + REGCACHE. If REGNUM is -1, do this for all registers in REGSET. */ + +static void +mips_fbsd_supply_fpregset (const struct regset *regset, + struct regcache *regcache, + int regnum, const void *fpregs, size_t len) +{ + size_t regsize = mips_abi_regsize (get_regcache_arch (regcache)); + + gdb_assert (len >= MIPS_FBSD_NUM_FPREGS * regsize); + + mips_fbsd_supply_fpregs (regcache, regnum, fpregs, regsize); +} + +/* Collect register REGNUM from the register cache REGCACHE and store + it in the buffer specified by FPREGS and LEN in the floating-point + register set REGSET. If REGNUM is -1, do this for all registers in + REGSET. */ + +static void +mips_fbsd_collect_fpregset (const struct regset *regset, + const struct regcache *regcache, + int regnum, void *fpregs, size_t len) +{ + size_t regsize = mips_abi_regsize (get_regcache_arch (regcache)); + + gdb_assert (len >= MIPS_FBSD_NUM_FPREGS * regsize); + + mips_fbsd_collect_fpregs (regcache, regnum, fpregs, regsize); +} + +/* Supply register REGNUM from the buffer specified by GREGS and LEN + in the general-purpose register set REGSET to register cache + REGCACHE. If REGNUM is -1, do this for all registers in REGSET. */ + +static void +mips_fbsd_supply_gregset (const struct regset *regset, + struct regcache *regcache, int regnum, + const void *gregs, size_t len) +{ + size_t regsize = mips_abi_regsize (get_regcache_arch (regcache)); + + gdb_assert (len >= MIPS_FBSD_NUM_GREGS * regsize); + + mips_fbsd_supply_gregs (regcache, regnum, gregs, regsize); +} + +/* Collect register REGNUM from the register cache REGCACHE and store + it in the buffer specified by GREGS and LEN in the general-purpose + register set REGSET. If REGNUM is -1, do this for all registers in + REGSET. */ + +static void +mips_fbsd_collect_gregset (const struct regset *regset, + const struct regcache *regcache, + int regnum, void *gregs, size_t len) +{ + size_t regsize = mips_abi_regsize (get_regcache_arch (regcache)); + + gdb_assert (len >= MIPS_FBSD_NUM_GREGS * regsize); + + mips_fbsd_collect_gregs (regcache, regnum, gregs, regsize); +} + +/* FreeBSD/mips register sets. */ + +static const struct regset mips_fbsd_gregset = +{ + NULL, + mips_fbsd_supply_gregset, + mips_fbsd_collect_gregset, +}; + +static const struct regset mips_fbsd_fpregset = +{ + NULL, + mips_fbsd_supply_fpregset, + mips_fbsd_collect_fpregset, +}; + +/* Iterate over core file register note sections. */ + +static void +mips_fbsd_iterate_over_regset_sections (struct gdbarch *gdbarch, + iterate_over_regset_sections_cb *cb, + void *cb_data, + const struct regcache *regcache) +{ + size_t regsize = mips_abi_regsize (gdbarch); + + cb (".reg", MIPS_FBSD_NUM_GREGS * regsize, &mips_fbsd_gregset, + NULL, cb_data); + cb (".reg2", MIPS_FBSD_NUM_FPREGS * regsize, &mips_fbsd_fpregset, + NULL, cb_data); +} + +/* Signal trampoline support. */ + +#define FBSD_SYS_sigreturn 417 + +#define MIPS_INST_LI_V0_SIGRETURN 0x24020000 + FBSD_SYS_sigreturn +#define MIPS_INST_SYSCALL 0x0000000c +#define MIPS_INST_BREAK 0x0000000d + +#define O32_SIGFRAME_UCONTEXT_OFFSET (16) +#define O32_SIGSET_T_SIZE (16) + +#define O32_UCONTEXT_ONSTACK (O32_SIGSET_T_SIZE) +#define O32_UCONTEXT_PC (O32_UCONTEXT_ONSTACK + 4) +#define O32_UCONTEXT_REGS (O32_UCONTEXT_PC + 4) +#define O32_UCONTEXT_SR (O32_UCONTEXT_REGS + 4 * 32) +#define O32_UCONTEXT_LO (O32_UCONTEXT_SR + 4) +#define O32_UCONTEXT_HI (O32_UCONTEXT_LO + 4) +#define O32_UCONTEXT_FPUSED (O32_UCONTEXT_HI + 4) +#define O32_UCONTEXT_FPREGS (O32_UCONTEXT_FPUSED + 4) + +#define O32_UCONTEXT_REG_SIZE 4 + +static void +mips_fbsd_sigframe_init (const struct tramp_frame *self, + struct frame_info *this_frame, + struct trad_frame_cache *cache, + CORE_ADDR func) +{ + struct gdbarch *gdbarch = get_frame_arch (this_frame); + enum bfd_endian byte_order = gdbarch_byte_order (gdbarch); + CORE_ADDR sp, ucontext_addr, addr; + int regnum; + gdb_byte buf[4]; + + /* We find the appropriate instance of `ucontext_t' at a + fixed offset in the signal frame. */ + sp = get_frame_register_signed (this_frame, + MIPS_SP_REGNUM + gdbarch_num_regs (gdbarch)); + ucontext_addr = sp + O32_SIGFRAME_UCONTEXT_OFFSET; + + /* PC. */ + regnum = mips_regnum (gdbarch)->pc; + trad_frame_set_reg_addr (cache, + regnum + gdbarch_num_regs (gdbarch), + ucontext_addr + O32_UCONTEXT_PC); + + /* GPRs. */ + for (regnum = MIPS_ZERO_REGNUM, addr = ucontext_addr + O32_UCONTEXT_REGS; + regnum <= MIPS_RA_REGNUM; regnum++, addr += O32_UCONTEXT_REG_SIZE) + trad_frame_set_reg_addr (cache, + regnum + gdbarch_num_regs (gdbarch), + addr); + + regnum = MIPS_PS_REGNUM; + trad_frame_set_reg_addr (cache, + regnum + gdbarch_num_regs (gdbarch), + ucontext_addr + O32_UCONTEXT_SR); + + /* HI and LO. */ + regnum = mips_regnum (gdbarch)->lo; + trad_frame_set_reg_addr (cache, + regnum + gdbarch_num_regs (gdbarch), + ucontext_addr + O32_UCONTEXT_LO); + regnum = mips_regnum (gdbarch)->hi; + trad_frame_set_reg_addr (cache, + regnum + gdbarch_num_regs (gdbarch), + ucontext_addr + O32_UCONTEXT_HI); + + if (target_read_memory (ucontext_addr + O32_UCONTEXT_FPUSED, buf, 4) == 0 && + extract_unsigned_integer (buf, 4, byte_order) != 0) + { + for (regnum = 0, addr = ucontext_addr + O32_UCONTEXT_FPREGS; + regnum < 32; regnum++, addr += O32_UCONTEXT_REG_SIZE) + trad_frame_set_reg_addr (cache, + regnum + gdbarch_fp0_regnum (gdbarch), + addr); + trad_frame_set_reg_addr (cache, mips_regnum (gdbarch)->fp_control_status, + addr); + } + + trad_frame_set_id (cache, frame_id_build (sp, func)); +} + +#define MIPS_INST_ADDIU_A0_SP_O32 (0x27a40000 \ + + O32_SIGFRAME_UCONTEXT_OFFSET) + +static const struct tramp_frame mips_fbsd_sigframe = +{ + SIGTRAMP_FRAME, + MIPS_INSN32_SIZE, + { + { MIPS_INST_ADDIU_A0_SP_O32, -1 }, /* addiu a0, sp, SIGF_UC */ + { MIPS_INST_LI_V0_SIGRETURN, -1 }, /* li v0, SYS_sigreturn */ + { MIPS_INST_SYSCALL, -1 }, /* syscall */ + { MIPS_INST_BREAK, -1 }, /* break */ + { TRAMP_SENTINEL_INSN, -1 } + }, + mips_fbsd_sigframe_init +}; + +#define N64_SIGFRAME_UCONTEXT_OFFSET (32) +#define N64_SIGSET_T_SIZE (16) + +#define N64_UCONTEXT_ONSTACK (N64_SIGSET_T_SIZE) +#define N64_UCONTEXT_PC (N64_UCONTEXT_ONSTACK + 8) +#define N64_UCONTEXT_REGS (N64_UCONTEXT_PC + 8) +#define N64_UCONTEXT_SR (N64_UCONTEXT_REGS + 8 * 32) +#define N64_UCONTEXT_LO (N64_UCONTEXT_SR + 8) +#define N64_UCONTEXT_HI (N64_UCONTEXT_LO + 8) +#define N64_UCONTEXT_FPUSED (N64_UCONTEXT_HI + 8) +#define N64_UCONTEXT_FPREGS (N64_UCONTEXT_FPUSED + 8) + +#define N64_UCONTEXT_REG_SIZE 8 + +static void +mips64_fbsd_sigframe_init (const struct tramp_frame *self, + struct frame_info *this_frame, + struct trad_frame_cache *cache, + CORE_ADDR func) +{ + struct gdbarch *gdbarch = get_frame_arch (this_frame); + enum bfd_endian byte_order = gdbarch_byte_order (gdbarch); + CORE_ADDR sp, ucontext_addr, addr; + int regnum; + gdb_byte buf[4]; + + /* We find the appropriate instance of `ucontext_t' at a + fixed offset in the signal frame. */ + sp = get_frame_register_signed (this_frame, + MIPS_SP_REGNUM + gdbarch_num_regs (gdbarch)); + ucontext_addr = sp + N64_SIGFRAME_UCONTEXT_OFFSET; + + /* PC. */ + regnum = mips_regnum (gdbarch)->pc; + trad_frame_set_reg_addr (cache, + regnum + gdbarch_num_regs (gdbarch), + ucontext_addr + N64_UCONTEXT_PC); + + /* GPRs. */ + for (regnum = MIPS_ZERO_REGNUM, addr = ucontext_addr + N64_UCONTEXT_REGS; + regnum <= MIPS_RA_REGNUM; regnum++, addr += N64_UCONTEXT_REG_SIZE) + trad_frame_set_reg_addr (cache, + regnum + gdbarch_num_regs (gdbarch), + addr); + + regnum = MIPS_PS_REGNUM; + trad_frame_set_reg_addr (cache, + regnum + gdbarch_num_regs (gdbarch), + ucontext_addr + N64_UCONTEXT_SR); + + /* HI and LO. */ + regnum = mips_regnum (gdbarch)->lo; + trad_frame_set_reg_addr (cache, + regnum + gdbarch_num_regs (gdbarch), + ucontext_addr + N64_UCONTEXT_LO); + regnum = mips_regnum (gdbarch)->hi; + trad_frame_set_reg_addr (cache, + regnum + gdbarch_num_regs (gdbarch), + ucontext_addr + N64_UCONTEXT_HI); + + if (target_read_memory (ucontext_addr + N64_UCONTEXT_FPUSED, buf, 4) == 0 && + extract_unsigned_integer (buf, 4, byte_order) != 0) + { + for (regnum = 0, addr = ucontext_addr + N64_UCONTEXT_FPREGS; + regnum < 32; regnum++, addr += N64_UCONTEXT_REG_SIZE) + trad_frame_set_reg_addr (cache, + regnum + gdbarch_fp0_regnum (gdbarch), + addr); + trad_frame_set_reg_addr (cache, mips_regnum (gdbarch)->fp_control_status, + addr); + } + + trad_frame_set_id (cache, frame_id_build (sp, func)); +} + +#define MIPS_INST_DADDIU_A0_SP_N64 (0x67a40000 \ + + N64_SIGFRAME_UCONTEXT_OFFSET) + +static const struct tramp_frame mips64_fbsd_sigframe = +{ + SIGTRAMP_FRAME, + MIPS_INSN32_SIZE, + { + { MIPS_INST_DADDIU_A0_SP_N64, -1 }, /* daddiu a0, sp, SIGF_UC */ + { MIPS_INST_LI_V0_SIGRETURN, -1 }, /* li v0, SYS_sigreturn */ + { MIPS_INST_SYSCALL, -1 }, /* syscall */ + { MIPS_INST_BREAK, -1 }, /* break */ + { TRAMP_SENTINEL_INSN, -1 } + }, + mips64_fbsd_sigframe_init +}; + +/* Shared library support. */ + +/* FreeBSD/mips uses a slightly different `struct link_map' than the + other FreeBSD platforms as it includes an additional `l_off' + member. */ + +static struct link_map_offsets * +mips_fbsd_ilp32_fetch_link_map_offsets (void) +{ + static struct link_map_offsets lmo; + static struct link_map_offsets *lmp = NULL; + + if (lmp == NULL) + { + lmp = &lmo; + + lmo.r_version_offset = 0; + lmo.r_version_size = 4; + lmo.r_map_offset = 4; + lmo.r_brk_offset = 8; + lmo.r_ldsomap_offset = -1; + + lmo.link_map_size = 24; + lmo.l_addr_offset = 0; + lmo.l_name_offset = 8; + lmo.l_ld_offset = 12; + lmo.l_next_offset = 16; + lmo.l_prev_offset = 20; + } + + return lmp; +} + +static struct link_map_offsets * +mips_fbsd_lp64_fetch_link_map_offsets (void) +{ + static struct link_map_offsets lmo; + static struct link_map_offsets *lmp = NULL; + + if (lmp == NULL) + { + lmp = &lmo; + + lmo.r_version_offset = 0; + lmo.r_version_size = 4; + lmo.r_map_offset = 8; + lmo.r_brk_offset = 16; + lmo.r_ldsomap_offset = -1; + + lmo.link_map_size = 48; + lmo.l_addr_offset = 0; + lmo.l_name_offset = 16; + lmo.l_ld_offset = 24; + lmo.l_next_offset = 32; + lmo.l_prev_offset = 40; + } + + return lmp; +} + +static void +mips_fbsd_init_abi (struct gdbarch_info info, struct gdbarch *gdbarch) +{ + enum mips_abi abi = mips_abi (gdbarch); + + /* Generic FreeBSD support. */ + fbsd_init_abi (info, gdbarch); + + set_gdbarch_software_single_step (gdbarch, mips_software_single_step); + + switch (abi) + { + case MIPS_ABI_O32: + tramp_frame_prepend_unwinder (gdbarch, &mips_fbsd_sigframe); + break; + case MIPS_ABI_N32: + break; + case MIPS_ABI_N64: + tramp_frame_prepend_unwinder (gdbarch, &mips64_fbsd_sigframe); + break; + } + + set_gdbarch_iterate_over_regset_sections + (gdbarch, mips_fbsd_iterate_over_regset_sections); + + /* FreeBSD/mips has SVR4-style shared libraries. */ + set_solib_svr4_fetch_link_map_offsets + (gdbarch, (gdbarch_ptr_bit (gdbarch) == 32 ? + mips_fbsd_ilp32_fetch_link_map_offsets : + mips_fbsd_lp64_fetch_link_map_offsets)); +} + + +/* Provide a prototype to silence -Wmissing-prototypes. */ +void _initialize_mips_fbsd_tdep (void); + +void +_initialize_mips_fbsd_tdep (void) +{ + gdbarch_register_osabi (bfd_arch_mips, 0, GDB_OSABI_FREEBSD_ELF, + mips_fbsd_init_abi); +} diff --git a/gdb/mips-fbsd-tdep.h b/gdb/mips-fbsd-tdep.h new file mode 100644 index 0000000..8a197e6 --- /dev/null +++ b/gdb/mips-fbsd-tdep.h @@ -0,0 +1,28 @@ +/* Common target dependent code for GDB on MIPS systems running FreeBSD. + + Copyright (C) 2017 Free Software Foundation, Inc. + + This file is part of GDB. + + This program is free software; you can redistribute it and/or modify + it under the terms of the GNU General Public License as published by + the Free Software Foundation; either version 3 of the License, or + (at your option) any later version. + + This program is distributed in the hope that it will be useful, + but WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + GNU General Public License for more details. + + You should have received a copy of the GNU General Public License + along with this program. If not, see <http://www.gnu.org/licenses/>. */ + +#ifndef MIPS_FBSD_TDEP_H +#define MIPS_FBSD_TDEP_H + +void mips_fbsd_supply_fpregs (struct regcache *, int, const void *, size_t); +void mips_fbsd_supply_gregs (struct regcache *, int, const void *, size_t); +void mips_fbsd_collect_fpregs (const struct regcache *, int, void *, size_t); +void mips_fbsd_collect_gregs (const struct regcache *, int, void *, size_t); + +#endif /* MIPS_FBSD_TDEP_H */ |