gdb/sparc64nbsd-tdep.c - gdb
Global variables defined
Functions defined
Source code
- #include "defs.h"
- #include "frame.h"
- #include "frame-unwind.h"
- #include "gdbcore.h"
- #include "osabi.h"
- #include "regcache.h"
- #include "regset.h"
- #include "symtab.h"
- #include "objfiles.h"
- #include "solib-svr4.h"
- #include "trad-frame.h"
- #include "sparc64-tdep.h"
- #include "nbsd-tdep.h"
- const struct sparc_gregmap sparc64nbsd_gregmap =
- {
- 0 * 8,
- 1 * 8,
- 2 * 8,
- 3 * 8,
- -1,
- -1,
- 5 * 8,
- -1,
- 4
- };
- static void
- sparc64nbsd_supply_gregset (const struct regset *regset,
- struct regcache *regcache,
- int regnum, const void *gregs, size_t len)
- {
- sparc64_supply_gregset (&sparc64nbsd_gregmap, regcache, regnum, gregs);
- }
- static void
- sparc64nbsd_supply_fpregset (const struct regset *regset,
- struct regcache *regcache,
- int regnum, const void *fpregs, size_t len)
- {
- sparc64_supply_fpregset (&sparc64_bsd_fpregmap, regcache, regnum, fpregs);
- }
- static const CORE_ADDR sparc64nbsd_sigtramp_start = 0xffffffffffffdee4ULL;
- static const CORE_ADDR sparc64nbsd_sigtramp_end = 0xffffffffffffe000ULL;
- static int
- sparc64nbsd_pc_in_sigtramp (CORE_ADDR pc, const char *name)
- {
- if (pc >= sparc64nbsd_sigtramp_start && pc < sparc64nbsd_sigtramp_end)
- return 1;
- return nbsd_pc_in_sigtramp (pc, name);
- }
- struct trad_frame_saved_reg *
- sparc64nbsd_sigcontext_saved_regs (CORE_ADDR sigcontext_addr,
- struct frame_info *this_frame)
- {
- struct gdbarch *gdbarch = get_frame_arch (this_frame);
- struct trad_frame_saved_reg *saved_regs;
- CORE_ADDR addr, sp;
- int regnum, delta;
- saved_regs = trad_frame_alloc_saved_regs (this_frame);
-
- saved_regs[SPARC_SP_REGNUM].addr = sigcontext_addr + 8;
- saved_regs[SPARC64_PC_REGNUM].addr = sigcontext_addr + 16;
- saved_regs[SPARC64_NPC_REGNUM].addr = sigcontext_addr + 24;
- saved_regs[SPARC64_STATE_REGNUM].addr = sigcontext_addr + 32;
- saved_regs[SPARC_G1_REGNUM].addr = sigcontext_addr + 40;
- saved_regs[SPARC_O0_REGNUM].addr = sigcontext_addr + 48;
-
- delta = SPARC_L0_REGNUM - SPARC_G0_REGNUM;
- for (regnum = SPARC_G2_REGNUM; regnum <= SPARC_G7_REGNUM; regnum++)
- saved_regs[regnum].realreg = regnum + delta;
- saved_regs[SPARC64_Y_REGNUM].realreg = SPARC_L1_REGNUM;
-
- delta = SPARC_I0_REGNUM - SPARC_O0_REGNUM;
- for (regnum = SPARC_O1_REGNUM; regnum <= SPARC_O5_REGNUM; regnum++)
- saved_regs[regnum].realreg = regnum + delta;
- saved_regs[SPARC_O7_REGNUM].realreg = SPARC_I7_REGNUM;
-
- addr = saved_regs[SPARC_SP_REGNUM].addr;
- sp = get_frame_memory_unsigned (this_frame, addr, 8);
- for (regnum = SPARC_L0_REGNUM, addr = sp + BIAS;
- regnum <= SPARC_I7_REGNUM; regnum++, addr += 8)
- saved_regs[regnum].addr = addr;
-
- {
- ULONGEST wcookie = sparc_fetch_wcookie (gdbarch);
- if (wcookie != 0)
- {
- ULONGEST i7;
- addr = saved_regs[SPARC_I7_REGNUM].addr;
- i7 = get_frame_memory_unsigned (this_frame, addr, 8);
- trad_frame_set_value (saved_regs, SPARC_I7_REGNUM, i7 ^ wcookie);
- }
- }
- TODO
- return saved_regs;
- }
- static struct sparc_frame_cache *
- sparc64nbsd_sigcontext_frame_cache (struct frame_info *this_frame,
- void **this_cache)
- {
- struct sparc_frame_cache *cache;
- CORE_ADDR addr;
- if (*this_cache)
- return *this_cache;
- cache = sparc_frame_cache (this_frame, this_cache);
- gdb_assert (cache == *this_cache);
-
- if (cache->pc == 0)
- {
- cache->pc = sparc64nbsd_sigtramp_start;
-
- sparc_record_save_insn (cache);
- addr = get_frame_register_unsigned (this_frame, SPARC_FP_REGNUM);
- if (addr & 1)
- addr += BIAS;
- cache->base = addr;
- }
-
- addr = cache->base + 128 + 8;
- cache->saved_regs = sparc64nbsd_sigcontext_saved_regs (addr, this_frame);
- return cache;
- }
- static void
- sparc64nbsd_sigcontext_frame_this_id (struct frame_info *this_frame,
- void **this_cache,
- struct frame_id *this_id)
- {
- struct sparc_frame_cache *cache =
- sparc64nbsd_sigcontext_frame_cache (this_frame, this_cache);
- (*this_id) = frame_id_build (cache->base, cache->pc);
- }
- static struct value *
- sparc64nbsd_sigcontext_frame_prev_register (struct frame_info *this_frame,
- void **this_cache, int regnum)
- {
- struct sparc_frame_cache *cache =
- sparc64nbsd_sigcontext_frame_cache (this_frame, this_cache);
- return trad_frame_get_prev_register (this_frame, cache->saved_regs, regnum);
- }
- static int
- sparc64nbsd_sigtramp_frame_sniffer (const struct frame_unwind *self,
- struct frame_info *this_frame,
- void **this_cache)
- {
- CORE_ADDR pc = get_frame_pc (this_frame);
- const char *name;
- find_pc_partial_function (pc, &name, NULL, NULL);
- if (sparc64nbsd_pc_in_sigtramp (pc, name))
- {
- if (name == NULL || strncmp (name, "__sigtramp_sigcontext", 21))
- return 1;
- }
- return 0;
- }
- static const struct frame_unwind sparc64nbsd_sigcontext_frame_unwind =
- {
- SIGTRAMP_FRAME,
- default_frame_unwind_stop_reason,
- sparc64nbsd_sigcontext_frame_this_id,
- sparc64nbsd_sigcontext_frame_prev_register,
- NULL,
- sparc64nbsd_sigtramp_frame_sniffer
- };
- static const struct regset sparc64nbsd_gregset =
- {
- NULL, sparc64nbsd_supply_gregset, NULL
- };
- static const struct regset sparc64nbsd_fpregset =
- {
- NULL, sparc64nbsd_supply_fpregset, NULL
- };
- static void
- sparc64nbsd_init_abi (struct gdbarch_info info, struct gdbarch *gdbarch)
- {
- struct gdbarch_tdep *tdep = gdbarch_tdep (gdbarch);
- tdep->gregset = &sparc64nbsd_gregset;
- tdep->sizeof_gregset = 160;
- tdep->fpregset = &sparc64nbsd_fpregset;
- tdep->sizeof_fpregset = 272;
-
- tdep->step_trap = sparcnbsd_step_trap;
- frame_unwind_append_unwinder (gdbarch, &sparc64nbsd_sigcontext_frame_unwind);
- sparc64_init_abi (info, gdbarch);
-
- set_gdbarch_skip_trampoline_code (gdbarch, find_solib_trampoline_target);
- set_solib_svr4_fetch_link_map_offsets
- (gdbarch, svr4_lp64_fetch_link_map_offsets);
- }
- void _initialize_sparc64nbsd_tdep (void);
- void
- _initialize_sparc64nbsd_tdep (void)
- {
- gdbarch_register_osabi (bfd_arch_sparc, bfd_mach_sparc_v9,
- GDB_OSABI_NETBSD_ELF, sparc64nbsd_init_abi);
- }