diff options
Diffstat (limited to 'gdb/frv-linux-tdep.c')
| -rw-r--r-- | gdb/frv-linux-tdep.c | 166 |
1 files changed, 76 insertions, 90 deletions
diff --git a/gdb/frv-linux-tdep.c b/gdb/frv-linux-tdep.c index c9cfb6f..0791153 100644 --- a/gdb/frv-linux-tdep.c +++ b/gdb/frv-linux-tdep.c @@ -36,7 +36,8 @@ /* Define the size (in bytes) of an FR-V instruction. */ static const int frv_instr_size = 4; -enum { +enum +{ NORMAL_SIGTRAMP = 1, RT_SIGTRAMP = 2 }; @@ -55,9 +56,9 @@ frv_linux_pc_in_sigtramp (struct gdbarch *gdbarch, CORE_ADDR pc, instr = extract_unsigned_integer (buf, sizeof buf, byte_order); - if (instr == 0x8efc0077) /* setlos #__NR_sigreturn, gr7 */ + if (instr == 0x8efc0077) /* setlos #__NR_sigreturn, gr7 */ retval = NORMAL_SIGTRAMP; - else if (instr == 0x8efc00ad) /* setlos #__NR_rt_sigreturn, gr7 */ + else if (instr == 0x8efc00ad) /* setlos #__NR_rt_sigreturn, gr7 */ retval = RT_SIGTRAMP; else return 0; @@ -65,7 +66,7 @@ frv_linux_pc_in_sigtramp (struct gdbarch *gdbarch, CORE_ADDR pc, if (target_read_memory (pc + frv_instr_size, buf, sizeof buf) != 0) return 0; instr = extract_unsigned_integer (buf, sizeof buf, byte_order); - if (instr != 0xc0700000) /* tira gr0, 0 */ + if (instr != 0xc0700000) /* tira gr0, 0 */ return 0; /* If we get this far, we'll return a non-zero value, either @@ -208,14 +209,14 @@ frv_linux_sigcontext_reg_addr (frame_info_ptr this_frame, int regno, padding) = 24.) */ if (target_read_memory (sp + 12, buf, sizeof buf) != 0) { - warning (_("Can't read realtime sigtramp frame.")); + warning (_ ("Can't read realtime sigtramp frame.")); return 0; } sc_addr = extract_unsigned_integer (buf, sizeof buf, byte_order); sc_addr += 24; } else - internal_error (_("not a signal trampoline")); + internal_error (_ ("not a signal trampoline")); if (sc_addr_cache_ptr) *sc_addr_cache_ptr = sc_addr; @@ -223,43 +224,42 @@ frv_linux_sigcontext_reg_addr (frame_info_ptr this_frame, int regno, switch (regno) { - case psr_regnum : + case psr_regnum: return sc_addr + 0; /* sc_addr + 4 has "isr", the Integer Status Register. */ - case ccr_regnum : + case ccr_regnum: return sc_addr + 8; - case cccr_regnum : + case cccr_regnum: return sc_addr + 12; - case lr_regnum : + case lr_regnum: return sc_addr + 16; - case lcr_regnum : + case lcr_regnum: return sc_addr + 20; - case pc_regnum : + case pc_regnum: return sc_addr + 24; /* sc_addr + 28 is __status, the exception status. sc_addr + 32 is syscallno, the syscall number or -1. sc_addr + 36 is orig_gr8, the original syscall arg #1. sc_addr + 40 is gner[0]. sc_addr + 44 is gner[1]. */ - case iacc0h_regnum : + case iacc0h_regnum: return sc_addr + 48; - case iacc0l_regnum : + case iacc0l_regnum: return sc_addr + 52; - default : + default: if (first_gpr_regnum <= regno && regno <= last_gpr_regnum) return sc_addr + 56 + 4 * (regno - first_gpr_regnum); else if (first_fpr_regnum <= regno && regno <= last_fpr_regnum) return sc_addr + 312 + 4 * (regno - first_fpr_regnum); else - return -1; /* not saved. */ + return -1; /* not saved. */ } } /* Signal trampolines. */ static struct trad_frame_cache * -frv_linux_sigtramp_frame_cache (frame_info_ptr this_frame, - void **this_cache) +frv_linux_sigtramp_frame_cache (frame_info_ptr this_frame, void **this_cache) { struct gdbarch *gdbarch = get_frame_arch (this_frame); enum bfd_endian byte_order = gdbarch_byte_order (gdbarch); @@ -297,8 +297,7 @@ frv_linux_sigtramp_frame_cache (frame_info_ptr this_frame, } static void -frv_linux_sigtramp_frame_this_id (frame_info_ptr this_frame, - void **this_cache, +frv_linux_sigtramp_frame_this_id (frame_info_ptr this_frame, void **this_cache, struct frame_id *this_id) { struct trad_frame_cache *cache @@ -318,8 +317,7 @@ frv_linux_sigtramp_frame_prev_register (frame_info_ptr this_frame, static int frv_linux_sigtramp_frame_sniffer (const struct frame_unwind *self, - frame_info_ptr this_frame, - void **this_cache) + frame_info_ptr this_frame, void **this_cache) { struct gdbarch *gdbarch = get_frame_arch (this_frame); CORE_ADDR pc = get_frame_pc (this_frame); @@ -332,24 +330,27 @@ frv_linux_sigtramp_frame_sniffer (const struct frame_unwind *self, return 0; } -static const struct frame_unwind frv_linux_sigtramp_frame_unwind = -{ - "frv linux sigtramp", - SIGTRAMP_FRAME, - default_frame_unwind_stop_reason, - frv_linux_sigtramp_frame_this_id, - frv_linux_sigtramp_frame_prev_register, - NULL, - frv_linux_sigtramp_frame_sniffer -}; - +static const struct frame_unwind frv_linux_sigtramp_frame_unwind + = { "frv linux sigtramp", + SIGTRAMP_FRAME, + default_frame_unwind_stop_reason, + frv_linux_sigtramp_frame_this_id, + frv_linux_sigtramp_frame_prev_register, + NULL, + frv_linux_sigtramp_frame_sniffer }; + /* The FRV kernel defines ELF_NGREG as 46. We add 2 in order to include the loadmap addresses in the register set. (See below for more info.) */ #define FRV_ELF_NGREG (46 + 2) typedef unsigned char frv_elf_greg_t[4]; -typedef struct { frv_elf_greg_t reg[FRV_ELF_NGREG]; } frv_elf_gregset_t; + +typedef struct +{ + frv_elf_greg_t reg[FRV_ELF_NGREG]; +} frv_elf_gregset_t; typedef unsigned char frv_elf_fpreg_t[4]; + typedef struct { frv_elf_fpreg_t fr[64]; @@ -362,25 +363,24 @@ typedef struct /* Register maps. */ -static const struct regcache_map_entry frv_linux_gregmap[] = - { - { 1, psr_regnum, 4 }, - { 1, REGCACHE_MAP_SKIP, 4 }, /* isr */ - { 1, ccr_regnum, 4 }, - { 1, cccr_regnum, 4 }, - { 1, lr_regnum, 4 }, - { 1, lcr_regnum, 4 }, - { 1, pc_regnum, 4 }, - { 1, REGCACHE_MAP_SKIP, 4 }, /* __status */ - { 1, REGCACHE_MAP_SKIP, 4 }, /* syscallno */ - { 1, REGCACHE_MAP_SKIP, 4 }, /* orig_gr8 */ - { 1, gner0_regnum, 4 }, - { 1, gner1_regnum, 4 }, - { 1, REGCACHE_MAP_SKIP, 8 }, /* iacc0 */ - { 1, tbr_regnum, 4 }, - { 31, first_gpr_regnum + 1, 4 }, /* gr1 ... gr31 */ - - /* Technically, the loadmap addresses are not part of `pr_reg' as +static const struct regcache_map_entry frv_linux_gregmap[] + = { { 1, psr_regnum, 4 }, + { 1, REGCACHE_MAP_SKIP, 4 }, /* isr */ + { 1, ccr_regnum, 4 }, + { 1, cccr_regnum, 4 }, + { 1, lr_regnum, 4 }, + { 1, lcr_regnum, 4 }, + { 1, pc_regnum, 4 }, + { 1, REGCACHE_MAP_SKIP, 4 }, /* __status */ + { 1, REGCACHE_MAP_SKIP, 4 }, /* syscallno */ + { 1, REGCACHE_MAP_SKIP, 4 }, /* orig_gr8 */ + { 1, gner0_regnum, 4 }, + { 1, gner1_regnum, 4 }, + { 1, REGCACHE_MAP_SKIP, 8 }, /* iacc0 */ + { 1, tbr_regnum, 4 }, + { 31, first_gpr_regnum + 1, 4 }, /* gr1 ... gr31 */ + + /* Technically, the loadmap addresses are not part of `pr_reg' as found in the elf_prstatus struct. The fields which communicate the loadmap address appear (by design) immediately after `pr_reg' though, and the BFD function elf32_frv_grok_prstatus() @@ -388,31 +388,24 @@ static const struct regcache_map_entry frv_linux_gregmap[] = section that it extracts from the core file. So, for our purposes, they may be viewed as registers. */ - { 1, fdpic_loadmap_exec_regnum, 4 }, - { 1, fdpic_loadmap_interp_regnum, 4 }, - { 0 } - }; - -static const struct regcache_map_entry frv_linux_fpregmap[] = - { - { 64, first_fpr_regnum, 4 }, /* fr0 ... fr63 */ - { 1, fner0_regnum, 4 }, - { 1, fner1_regnum, 4 }, - { 1, msr0_regnum, 4 }, - { 1, msr1_regnum, 4 }, - { 8, acc0_regnum, 4 }, /* acc0 ... acc7 */ - { 1, accg0123_regnum, 4 }, - { 1, accg4567_regnum, 4 }, - { 1, fsr0_regnum, 4 }, - { 0 } - }; + { 1, fdpic_loadmap_exec_regnum, 4 }, + { 1, fdpic_loadmap_interp_regnum, 4 }, + { 0 } }; + +static const struct regcache_map_entry frv_linux_fpregmap[] + = { { 64, first_fpr_regnum, 4 }, /* fr0 ... fr63 */ + { 1, fner0_regnum, 4 }, { 1, fner1_regnum, 4 }, + { 1, msr0_regnum, 4 }, { 1, msr1_regnum, 4 }, + { 8, acc0_regnum, 4 }, /* acc0 ... acc7 */ + { 1, accg0123_regnum, 4 }, { 1, accg4567_regnum, 4 }, + { 1, fsr0_regnum, 4 }, { 0 } }; /* Unpack an frv_elf_gregset_t into GDB's register cache. */ -static void +static void frv_linux_supply_gregset (const struct regset *regset, - struct regcache *regcache, - int regnum, const void *gregs, size_t len) + struct regcache *regcache, int regnum, + const void *gregs, size_t len) { int regi; @@ -429,17 +422,11 @@ frv_linux_supply_gregset (const struct regset *regset, /* FRV Linux kernel register sets. */ -static const struct regset frv_linux_gregset = -{ - frv_linux_gregmap, - frv_linux_supply_gregset, regcache_collect_regset -}; +static const struct regset frv_linux_gregset + = { frv_linux_gregmap, frv_linux_supply_gregset, regcache_collect_regset }; -static const struct regset frv_linux_fpregset = -{ - frv_linux_fpregmap, - regcache_supply_regset, regcache_collect_regset -}; +static const struct regset frv_linux_fpregset + = { frv_linux_fpregmap, regcache_supply_regset, regcache_collect_regset }; static void frv_linux_iterate_over_regset_sections (struct gdbarch *gdbarch, @@ -453,17 +440,16 @@ frv_linux_iterate_over_regset_sections (struct gdbarch *gdbarch, &frv_linux_fpregset, NULL, cb_data); } - static void frv_linux_init_abi (struct gdbarch_info info, struct gdbarch *gdbarch) { linux_init_abi (info, gdbarch, 0); /* Set the sigtramp frame sniffer. */ - frame_unwind_append_unwinder (gdbarch, &frv_linux_sigtramp_frame_unwind); + frame_unwind_append_unwinder (gdbarch, &frv_linux_sigtramp_frame_unwind); - set_gdbarch_iterate_over_regset_sections - (gdbarch, frv_linux_iterate_over_regset_sections); + set_gdbarch_iterate_over_regset_sections ( + gdbarch, frv_linux_iterate_over_regset_sections); } static enum gdb_osabi @@ -483,12 +469,12 @@ frv_linux_elf_osabi_sniffer (bfd *abfd) } void _initialize_frv_linux_tdep (); + void _initialize_frv_linux_tdep () { gdbarch_register_osabi (bfd_arch_frv, 0, GDB_OSABI_LINUX, frv_linux_init_abi); - gdbarch_register_osabi_sniffer (bfd_arch_frv, - bfd_target_elf_flavour, + gdbarch_register_osabi_sniffer (bfd_arch_frv, bfd_target_elf_flavour, frv_linux_elf_osabi_sniffer); } |