mirror of
https://github.com/darlinghq/darling-gdb.git
synced 2024-11-24 12:39:59 +00:00
* sparc64-tdep.h (stryct_frame_info, struct trad_frame_saved_reg):
Add opaque declarations. (sparc64nbsd_sigcontext_saved_regs): New prototype. * sparc64nbsd-tdep.c (sparc64nbsd_sigcontext_saved_regs): New function with code split out from sparc64nbsd_sigcontext_frame_cache. (sparc64nbsd_sigcontext_frame_cache): Use sparc64nbsd_sigcontext_saved_regs. (_initialize_sparc64nbsd_tdep): Don't register OS ABI handler for OpenBSD. * sparc64obsd-tdep.c: New file. * Makefile.in (ALLDEPFILES): Add sparc64obsd-tdep.c. (sparc64obsd-tdep.o): New dependency. * configure.tgt (sparc64-*-openbsd*): Set gdb_target to obsd64 and gdb_osabi to GDB_OSABI_OPENBSD_ELF. * config/sparc/obsd64.mt: New file.
This commit is contained in:
Mark Kettenis
parent
94b8e87660
commit
1e067c66c8
@ -1,5 +1,22 @@
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2004-01-24 Mark Kettenis <kettenis@gnu.org>
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* sparc64-tdep.h (stryct_frame_info, struct trad_frame_saved_reg):
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Add opaque declarations.
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(sparc64nbsd_sigcontext_saved_regs): New prototype.
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* sparc64nbsd-tdep.c (sparc64nbsd_sigcontext_saved_regs): New
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function with code split out from
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sparc64nbsd_sigcontext_frame_cache.
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(sparc64nbsd_sigcontext_frame_cache): Use
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sparc64nbsd_sigcontext_saved_regs.
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(_initialize_sparc64nbsd_tdep): Don't register OS ABI handler for
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OpenBSD.
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* sparc64obsd-tdep.c: New file.
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* Makefile.in (ALLDEPFILES): Add sparc64obsd-tdep.c.
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(sparc64obsd-tdep.o): New dependency.
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* configure.tgt (sparc64-*-openbsd*): Set gdb_target to obsd64 and
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gdb_osabi to GDB_OSABI_OPENBSD_ELF.
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* config/sparc/obsd64.mt: New file.
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* sparc-tdep.c (sparc_fetch_instruction): Return zero if we can't
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read the instruction at PC.
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@ -1327,8 +1327,8 @@ ALLDEPFILES = \
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sparc-tdep.c sparc-sol2-nat.c sparc-sol2-tdep.c sparc64-linux-nat.c \
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sparc64-linux-tdep.c sparc64-nat.c sparc64-sol2-tdep.c \
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sparc64-tdep.c sparc64fbsd-nat.c sparc64fbsd-tdep.c \
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sparc64nbsd-nat.c sparc64nbsd-tdep.c sparcnbsd-nat.c \
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sparcnbsd-tdep.c \
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sparc64nbsd-nat.c sparc64nbsd-tdep.c sparc64obsd-tdep.c \
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sparcnbsd-nat.c sparcnbsd-tdep.c \
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sun3-nat.c \
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symm-tdep.c symm-nat.c \
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vax-tdep.c \
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@ -2363,6 +2363,10 @@ sparc64nbsd-tdep.o: sparc64nbsd-tdep.c $(defs_h) $(frame_h) \
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$(frame_unwind_h) $(gdbcore_h) $(osabi_h) $(regcache_h) $(regset_h) \
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$(symtab_h) $(solib_svr4_h) $(trad_frame_h) $(gdb_assert_h) \
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$(gdb_string_h) $(sparc64_tdep_h) $(nbsd_tdep_h)
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sparc64obsd-tdep.o: sparc64obsd-tdep.c $(defs_h) $(frame_h) \
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$(frame_unwind_h) $(osabi_h) $(regset_h) $(symtab_h) \
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$(solib_svr4_h) $(trad_frame_h) $(gdb_assert_h) \
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$(sparc64_tdep_h) $(nbsd_tdep_h)
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sparc64-sol2-tdep.o: sparc64-sol2-tdep.c $(defs_h) $(frame_h) \
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$(frame_unwind_h) $(gdbarch_h) $(symtab_h) $(objfiles_h) $(osabi_h) \
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$(trad_frame_h) $(gdb_assert_h) $(sparc64_tdep_h)
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5
gdb/config/sparc/obsd64.mt
Normal file
5
gdb/config/sparc/obsd64.mt
Normal file
@ -0,0 +1,5 @@
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# Target: OpenBSD/sparc64
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TDEPFILES= sparc64-tdep.o sparc64nbsd-tdep.o sparc64obsd-tdep.o \
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sparc-tdep.o sparcnbsd-tdep.o nbsd-tdep.o \
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corelow.o solib.o solib-svr4.o
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TM_FILE= tm-nbsd.h
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@ -191,7 +191,9 @@ sparc64-*-linux*) gdb_target=linux64 ;;
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sparc-*-netbsd*) gdb_target=nbsd ;;
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sparc64-*-netbsd*) gdb_target=nbsd64 ;;
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sparc-*-openbsd*) gdb_target=nbsd ;;
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sparc64-*-openbsd*) gdb_target=nbsd64 ;;
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sparc64-*-openbsd*) gdb_target=obsd64
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gdb_osabi=GDB_OSABI_OPENBSD_ELF
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;;
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sparc-*-solaris2.[0-6] | sparc-*-solaris2.[0-6].*)
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gdb_target=sol2
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;;
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@ -22,9 +22,11 @@
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#ifndef SPARC64_TDEP_H
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#define SPARC64_TDEP_H 1
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struct frame_info;
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struct gdbarch;
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struct sparc_gregset;
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struct regcache;
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struct sparc_gregset;
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struct trad_frame_saved_reg;
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#include "sparc-tdep.h"
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@ -109,9 +111,13 @@ extern void sparc64_sol2_init_abi (struct gdbarch_info info,
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/* Register offsets for FreeBSD/sparc64. */
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extern const struct sparc_gregset sparc64fbsd_gregset;
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/* Variables exported from sparc64nbsd-tdep.c. */
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/* Functions and variables exported from sparc64nbsd-tdep.c. */
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/* Register offsets for NetBSD/sparc64. */
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extern const struct sparc_gregset sparc64nbsd_gregset;
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extern struct trad_frame_saved_reg *
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sparc64nbsd_sigcontext_saved_regs (CORE_ADDR sigcontext_addr,
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struct frame_info *next_frame);
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#endif /* sparc64-tdep.h */
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@ -88,14 +88,61 @@ sparc64nbsd_pc_in_sigtramp (CORE_ADDR pc, char *name)
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return nbsd_pc_in_sigtramp (pc, name);
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}
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struct trad_frame_saved_reg *
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sparc64nbsd_sigcontext_saved_regs (CORE_ADDR sigcontext_addr,
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struct frame_info *next_frame)
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{
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struct trad_frame_saved_reg *saved_regs;
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CORE_ADDR addr, sp;
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int regnum, delta;
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saved_regs = trad_frame_alloc_saved_regs (next_frame);
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/* The registers are saved in bits and pieces scattered all over the
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place. The code below records their location on the assumption
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that the part of the signal trampoline that saves the state has
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been executed. */
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saved_regs[SPARC_SP_REGNUM].addr = sigcontext_addr + 8;
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saved_regs[SPARC64_PC_REGNUM].addr = sigcontext_addr + 16;
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saved_regs[SPARC64_NPC_REGNUM].addr = sigcontext_addr + 24;
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saved_regs[SPARC64_STATE_REGNUM].addr = sigcontext_addr + 32;
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saved_regs[SPARC_G1_REGNUM].addr = sigcontext_addr + 40;
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saved_regs[SPARC_O0_REGNUM].addr = sigcontext_addr + 48;
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/* The remaining `global' registers and %y are saved in the `local'
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registers. */
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delta = SPARC_L0_REGNUM - SPARC_G0_REGNUM;
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for (regnum = SPARC_G2_REGNUM; regnum <= SPARC_G7_REGNUM; regnum++)
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saved_regs[regnum].realreg = regnum + delta;
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saved_regs[SPARC64_Y_REGNUM].realreg = SPARC_L1_REGNUM;
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/* The remaining `out' registers can be found in the current frame's
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`in' registers. */
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delta = SPARC_I0_REGNUM - SPARC_O0_REGNUM;
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for (regnum = SPARC_O1_REGNUM; regnum <= SPARC_O5_REGNUM; regnum++)
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saved_regs[regnum].realreg = regnum + delta;
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saved_regs[SPARC_O7_REGNUM].realreg = SPARC_I7_REGNUM;
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/* The `local' and `in' registers have been saved in the register
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save area. */
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addr = saved_regs[SPARC_SP_REGNUM].addr;
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sp = get_frame_memory_unsigned (next_frame, addr, 8);
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for (regnum = SPARC_L0_REGNUM, addr = sp + BIAS;
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regnum <= SPARC_I7_REGNUM; regnum++, addr += 8)
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saved_regs[regnum].addr = addr;
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/* TODO: Handle the floating-point registers. */
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return saved_regs;
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}
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static struct sparc_frame_cache *
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sparc64nbsd_sigcontext_frame_cache (struct frame_info *next_frame,
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void **this_cache)
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{
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struct sparc_frame_cache *cache;
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CORE_ADDR addr, sigcontext_addr, sp;
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LONGEST fprs;
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int regnum, delta;
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CORE_ADDR addr;
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if (*this_cache)
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return *this_cache;
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@ -103,11 +150,6 @@ sparc64nbsd_sigcontext_frame_cache (struct frame_info *next_frame,
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cache = sparc_frame_cache (next_frame, this_cache);
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gdb_assert (cache == *this_cache);
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/* The registers are saved in bits and pieces scattered all over the
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place. The code below records their location on the assumption
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that the part of the signal trampoline that saves the state has
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been executed. */
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/* If we couldn't find the frame's function, we're probably dealing
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with an on-stack signal trampoline. */
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if (cache->pc == 0)
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@ -121,42 +163,10 @@ sparc64nbsd_sigcontext_frame_cache (struct frame_info *next_frame,
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cache->base = addr;
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}
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cache->saved_regs = trad_frame_alloc_saved_regs (next_frame);
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/* We find the appropriate instance of `struct sigcontext' at a
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fixed offset in the signal frame. */
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sigcontext_addr = cache->base + BIAS + 128 + 8;
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cache->saved_regs[SPARC_SP_REGNUM].addr = sigcontext_addr + 8;
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cache->saved_regs[SPARC64_PC_REGNUM].addr = sigcontext_addr + 16;
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cache->saved_regs[SPARC64_NPC_REGNUM].addr = sigcontext_addr + 24;
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cache->saved_regs[SPARC64_STATE_REGNUM].addr = sigcontext_addr + 32;
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cache->saved_regs[SPARC_G1_REGNUM].addr = sigcontext_addr + 40;
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cache->saved_regs[SPARC_O0_REGNUM].addr = sigcontext_addr + 48;
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/* The remaining `global' registers and %y are saved in the `local'
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registers. */
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delta = SPARC_L0_REGNUM - SPARC_G0_REGNUM;
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for (regnum = SPARC_G2_REGNUM; regnum <= SPARC_G7_REGNUM; regnum++)
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cache->saved_regs[regnum].realreg = regnum + delta;
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cache->saved_regs[SPARC64_Y_REGNUM].realreg = SPARC_L1_REGNUM;
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/* The remaining `out' registers can be found in the current frame's
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`in' registers. */
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delta = SPARC_I0_REGNUM - SPARC_O0_REGNUM;
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for (regnum = SPARC_O1_REGNUM; regnum <= SPARC_O5_REGNUM; regnum++)
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cache->saved_regs[regnum].realreg = regnum + delta;
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cache->saved_regs[SPARC_O7_REGNUM].realreg = SPARC_I7_REGNUM;
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/* The `local' and `in' registers have been saved in the register
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save area. */
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addr = cache->saved_regs[SPARC_SP_REGNUM].addr;
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sp = get_frame_memory_unsigned (next_frame, addr, 8);
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for (regnum = SPARC_L0_REGNUM, addr = sp + BIAS;
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regnum <= SPARC_I7_REGNUM; regnum++, addr += 8)
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cache->saved_regs[regnum].addr = addr;
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/* TODO: Handle the floating-point registers. */
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addr = cache->base + BIAS + 128 + 8;
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cache->saved_regs = sparc64nbsd_sigcontext_saved_regs (addr, next_frame);
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return cache;
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}
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@ -243,6 +253,4 @@ _initialize_sparc64nbsd_tdep (void)
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{
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gdbarch_register_osabi (bfd_arch_sparc, bfd_mach_sparc_v9,
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GDB_OSABI_NETBSD_ELF, sparc64nbsd_init_abi);
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gdbarch_register_osabi (bfd_arch_sparc, bfd_mach_sparc_v9,
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GDB_OSABI_OPENBSD_ELF, sparc64nbsd_init_abi);
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}
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210
gdb/sparc64obsd-tdep.c
Normal file
210
gdb/sparc64obsd-tdep.c
Normal file
@ -0,0 +1,210 @@
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/* Target-dependent code for OpenBSD/sparc64.
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Copyright 2004 Free Software Foundation, Inc.
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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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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2 of the License, or
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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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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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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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along with this program; if not, write to the Free Software
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Foundation, Inc., 59 Temple Place - Suite 330,
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Boston, MA 02111-1307, USA. */
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#include "defs.h"
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#include "frame.h"
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#include "frame-unwind.h"
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#include "osabi.h"
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#include "regset.h"
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#include "symtab.h"
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#include "solib-svr4.h"
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#include "trad-frame.h"
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#include "gdb_assert.h"
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#include "sparc64-tdep.h"
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#include "nbsd-tdep.h"
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/* OpenBSD uses the traditional NetBSD core file format, even for
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ports that use ELF. The core files don't use multiple register
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sets. Instead, the general-purpose and floating-point registers
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are lumped together in a single section. Unlike on NetBSD, OpenBSD
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uses a different layout for its general-purpose registers than the
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layout used for ptrace(2). */
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/* From <machine/reg.h>. */
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const struct sparc_gregset sparc64obsd_core_gregset =
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{
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0 * 8, /* "tstate" */
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1 * 8, /* %pc */
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2 * 8, /* %npc */
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3 * 8, /* %y */
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-1, /* %fprs */
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-1,
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7 * 8, /* %g1 */
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22 * 8, /* %l0 */
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4 /* sizeof (%y) */
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};
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static void
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sparc64obsd_supply_gregset (const struct regset *regset,
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struct regcache *regcache,
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int regnum, const void *gregs, size_t len)
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{
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const char *regs = gregs;
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sparc64_supply_gregset (regset->descr, regcache, regnum, regs);
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sparc64_supply_fpregset (regcache, regnum, regs + 288);
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}
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/* Signal trampolines. */
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/* The OpenBSD kernel maps the signal trampoline at some random
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location in user space, which means that the traditional BSD way of
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detecting it won't work.
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The signal trampoline will be mapped at an address that is page
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aligned. We recognize the signal trampoline by the looking for the
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sigreturn system call. */
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static const int sparc64obsd_page_size = 8192;
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static int
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sparc64obsd_pc_in_sigtramp (CORE_ADDR pc, char *name)
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{
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CORE_ADDR start_pc = (pc & ~(sparc64obsd_page_size - 1));
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unsigned long insn;
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if (name)
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return 0;
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/* Check for "restore %g0, SYS_sigreturn, %g1". */
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insn = sparc_fetch_instruction (start_pc + 0xe8);
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if (insn != 0x83e82067)
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return 0;
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/* Check for "t ST_SYSCALL". */
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insn = sparc_fetch_instruction (start_pc + 0xf0);
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if (insn != 0x91d02000)
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return 0;
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return 1;
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}
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static struct sparc_frame_cache *
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sparc64obsd_frame_cache (struct frame_info *next_frame, void **this_cache)
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{
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struct sparc_frame_cache *cache;
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CORE_ADDR addr;
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|
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if (*this_cache)
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return *this_cache;
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cache = sparc_frame_cache (next_frame, this_cache);
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gdb_assert (cache == *this_cache);
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/* If we couldn't find the frame's function, we're probably dealing
|
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with an on-stack signal trampoline. */
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if (cache->pc == 0)
|
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{
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cache->pc = frame_pc_unwind (next_frame);
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cache->pc &= ~(sparc64obsd_page_size - 1);
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/* Since we couldn't find the frame's function, the cache was
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initialized under the assumption that we're frameless. */
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cache->frameless_p = 0;
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addr = frame_unwind_register_unsigned (next_frame, SPARC_FP_REGNUM);
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cache->base = addr;
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}
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/* We find the appropriate instance of `struct sigcontext' at a
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fixed offset in the signal frame. */
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addr = cache->base + BIAS + 128 + 16;
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cache->saved_regs = sparc64nbsd_sigcontext_saved_regs (addr, next_frame);
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return cache;
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}
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static void
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sparc64obsd_frame_this_id (struct frame_info *next_frame, void **this_cache,
|
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struct frame_id *this_id)
|
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{
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struct sparc_frame_cache *cache =
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sparc64obsd_frame_cache (next_frame, this_cache);
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(*this_id) = frame_id_build (cache->base, cache->pc);
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}
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static void
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sparc64obsd_frame_prev_register (struct frame_info *next_frame,
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void **this_cache,
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int regnum, int *optimizedp,
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enum lval_type *lvalp, CORE_ADDR *addrp,
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int *realnump, void *valuep)
|
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{
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struct sparc_frame_cache *cache =
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sparc64obsd_frame_cache (next_frame, this_cache);
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|
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trad_frame_prev_register (next_frame, cache->saved_regs, regnum,
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optimizedp, lvalp, addrp, realnump, valuep);
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}
|
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|
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static const struct frame_unwind sparc64obsd_frame_unwind =
|
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{
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SIGTRAMP_FRAME,
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sparc64obsd_frame_this_id,
|
||||
sparc64obsd_frame_prev_register
|
||||
};
|
||||
|
||||
static const struct frame_unwind *
|
||||
sparc64obsd_sigtramp_frame_sniffer (struct frame_info *next_frame)
|
||||
{
|
||||
CORE_ADDR pc = frame_pc_unwind (next_frame);
|
||||
char *name;
|
||||
|
||||
find_pc_partial_function (pc, &name, NULL, NULL);
|
||||
if (sparc64obsd_pc_in_sigtramp (pc, name))
|
||||
return &sparc64obsd_frame_unwind;
|
||||
|
||||
return NULL;
|
||||
}
|
||||
|
||||
|
||||
static void
|
||||
sparc64obsd_init_abi (struct gdbarch_info info, struct gdbarch *gdbarch)
|
||||
{
|
||||
struct gdbarch_tdep *tdep = gdbarch_tdep (gdbarch);
|
||||
|
||||
tdep->gregset = XMALLOC (struct regset);
|
||||
tdep->gregset->descr = &sparc64obsd_core_gregset;
|
||||
tdep->gregset->supply_regset = sparc64obsd_supply_gregset;
|
||||
tdep->sizeof_gregset = 832;
|
||||
|
||||
set_gdbarch_pc_in_sigtramp (gdbarch, sparc64obsd_pc_in_sigtramp);
|
||||
frame_unwind_append_sniffer (gdbarch, sparc64obsd_sigtramp_frame_sniffer);
|
||||
|
||||
sparc64_init_abi (info, gdbarch);
|
||||
|
||||
set_solib_svr4_fetch_link_map_offsets
|
||||
(gdbarch, nbsd_lp64_solib_svr4_fetch_link_map_offsets);
|
||||
}
|
||||
|
||||
|
||||
/* Provide a prototype to silence -Wmissing-prototypes. */
|
||||
void _initialize_sparc64obsd_tdep (void);
|
||||
|
||||
void
|
||||
_initialize_sparc64obsd_tdep (void)
|
||||
{
|
||||
gdbarch_register_osabi (bfd_arch_sparc, bfd_mach_sparc_v9,
|
||||
GDB_OSABI_OPENBSD_ELF, sparc64obsd_init_abi);
|
||||
}
|
||||
Loading…
Reference in New Issue
Block a user