diff options
| -rw-r--r-- | gdb/ChangeLog | 10 | ||||
| -rw-r--r-- | gdb/Makefile.in | 3 | ||||
| -rw-r--r-- | gdb/mips64obsd-tdep.c | 61 |
3 files changed, 73 insertions, 1 deletions
diff --git a/gdb/ChangeLog b/gdb/ChangeLog index dcf03ba..63e27f5 100644 --- a/gdb/ChangeLog +++ b/gdb/ChangeLog @@ -1,3 +1,13 @@ +2004-11-07 Mark Kettenis <kettenis@gnu.org> + + * mips64obsd-tdep.c: Include "trad-frame.h", "tramp-frame.h" and + "gdb_assert.h". + (mips64obsd_sigframe_init): New function. + (mips64obsd_sigframe): New variable. + (mips64obsd_init_abi): Add comments. Prepend mips64obsd_sigrame + unwinder. + * Makefile.in (mips64obsd-tdep.o): Update dependencies. + 2004-11-06 Joel Brobecker <brobecker@gnat.com> * alpha-mdebug-tdep.c: #include mdebugread.h. diff --git a/gdb/Makefile.in b/gdb/Makefile.in index c6572e5..5794561 100644 --- a/gdb/Makefile.in +++ b/gdb/Makefile.in @@ -2238,7 +2238,8 @@ minsyms.o: minsyms.c $(defs_h) $(gdb_string_h) $(symtab_h) $(bfd_h) \ mips64obsd-nat.o: mips64obsd-nat.c $(defs_h) $(inferior_h) $(regcache_h) \ $(target_h) $(inf_ptrace_h) mips64obsd-tdep.o: mips64obsd-tdep.c $(defs_h) $(osabi_h) $(regcache_h) \ - $(regset_h) $(gdb_string_h) $(mips_tdep_h) $(solib_svr4_h) + $(regset_h) $(trad_frame_h) $(tramp_frame_h) $gdb_assert_h) \ + $(gdb_string_h) $(mips_tdep_h) $(solib_svr4_h) mips-irix-tdep.o: mips-irix-tdep.c $(defs_h) $(osabi_h) $(elf_bfd_h) mips-linux-nat.o: mips-linux-nat.c $(defs_h) $(mips_tdep_h) mips-linux-tdep.o: mips-linux-tdep.c $(defs_h) $(gdbcore_h) $(target_h) \ diff --git a/gdb/mips64obsd-tdep.c b/gdb/mips64obsd-tdep.c index 34ca830..e8cf393 100644 --- a/gdb/mips64obsd-tdep.c +++ b/gdb/mips64obsd-tdep.c @@ -23,7 +23,10 @@ #include "osabi.h" #include "regcache.h" #include "regset.h" +#include "trad-frame.h" +#include "tramp-frame.h" +#include "gdb_assert.h" #include "gdb_string.h" #include "mips-tdep.h" @@ -74,14 +77,72 @@ mips64obsd_regset_from_core_section (struct gdbarch *gdbarch, } +/* Signal trampolines. */ + +static void +mips64obsd_sigframe_init (const struct tramp_frame *self, + struct frame_info *next_frame, + struct trad_frame_cache *cache, + CORE_ADDR func) +{ + struct gdbarch *gdbarch = get_frame_arch (next_frame); + CORE_ADDR sp, sigcontext_addr, addr; + int regnum; + + /* We find the appropriate instance of `struct sigcontext' at a + fixed offset in the signal frame. */ + sp = frame_unwind_register_signed (next_frame, MIPS_SP_REGNUM + NUM_REGS); + sigcontext_addr = sp + 32; + + /* PC. */ + regnum = mips_regnum (gdbarch)->pc; + trad_frame_set_reg_addr (cache, regnum + NUM_REGS, sigcontext_addr + 16); + + /* GPRs. */ + for (regnum = MIPS_AT_REGNUM, addr = sigcontext_addr + 32; + regnum <= MIPS_RA_REGNUM; regnum++, addr += 8) + trad_frame_set_reg_addr (cache, regnum + NUM_REGS, addr); + + /* HI and LO. */ + regnum = mips_regnum (gdbarch)->lo; + trad_frame_set_reg_addr (cache, regnum + NUM_REGS, sigcontext_addr + 280); + regnum = mips_regnum (gdbarch)->hi; + trad_frame_set_reg_addr (cache, regnum + NUM_REGS, sigcontext_addr + 288); + + /* TODO: Handle the floating-point registers. */ + + trad_frame_set_id (cache, frame_id_build (sp, func)); +} + +static const struct tramp_frame mips64obsd_sigframe = +{ + SIGTRAMP_FRAME, + MIPS_INSN32_SIZE, + { + { 0x67a40020, -1 }, /* daddiu a0,sp,32 */ + { 0x24020067, -1 }, /* li v0,103 */ + { 0x0000000c, -1 }, /* syscall */ + { 0x0000000d, -1 }, /* break */ + { TRAMP_SENTINEL_INSN, -1 } + }, + mips64obsd_sigframe_init +}; + + static void mips64obsd_init_abi (struct gdbarch_info info, struct gdbarch *gdbarch) { + /* OpenBSD/mips64 only supports the n64 ABI, but the braindamaged + way GDB works, forces us to pretend we can handle them all. */ + set_gdbarch_regset_from_core_section (gdbarch, mips64obsd_regset_from_core_section); + tramp_frame_prepend_unwinder (gdbarch, &mips64obsd_sigframe); + set_gdbarch_software_single_step (gdbarch, mips_software_single_step); + /* OpenBSD/mips64 has SVR4-style shared libraries. */ set_solib_svr4_fetch_link_map_offsets (gdbarch, svr4_lp64_fetch_link_map_offsets); } |