diff options
author | Mark Kettenis <kettenis@gnu.org> | 2003-12-31 17:32:25 +0000 |
---|---|---|
committer | Mark Kettenis <kettenis@gnu.org> | 2003-12-31 17:32:25 +0000 |
commit | acf3eedced187efb86c3f1abcffa0c26d2ae1b8d (patch) | |
tree | 660f98a3e99781f2f7ac459583c0c7c55a4279fd | |
parent | 59f378c8e86a502ab0fdde716861b99027a76d0b (diff) | |
download | gdb-acf3eedced187efb86c3f1abcffa0c26d2ae1b8d.tar.gz |
* sparc64-sol2-tdep.c: Include "frame.h", "frame-unwind.h",
"trad-frame.h" and "gdb_assert.h".
(BIAS): Define if not already defined.
(sparc64_sol2_sigtramp_frame_cache)
(sparc64_sol2_sigtramp_frame_this_id)
(sparc64_sol2_sigtramp_frame_prev_register): New functions.
(sparc64_sol2_sigtramp_frame_unwind): New variable.
(sparc64_sol2_sigtramp_frame_sniffer): New function.
(sparc64_sol2_init_abi): Set pc_in_sigtramp and append
sparc64_sol2_sigtramp_sniffer.
-rw-r--r-- | gdb/ChangeLog | 11 | ||||
-rw-r--r-- | gdb/sparc64-sol2-tdep.c | 115 |
2 files changed, 126 insertions, 0 deletions
diff --git a/gdb/ChangeLog b/gdb/ChangeLog index 20574bbbc2f..a575fb88512 100644 --- a/gdb/ChangeLog +++ b/gdb/ChangeLog @@ -1,5 +1,16 @@ 2003-12-31 Mark Kettenis <kettenis@gnu.org> + * sparc64-sol2-tdep.c: Include "frame.h", "frame-unwind.h", + "trad-frame.h" and "gdb_assert.h". + (BIAS): Define if not already defined. + (sparc64_sol2_sigtramp_frame_cache) + (sparc64_sol2_sigtramp_frame_this_id) + (sparc64_sol2_sigtramp_frame_prev_register): New functions. + (sparc64_sol2_sigtramp_frame_unwind): New variable. + (sparc64_sol2_sigtramp_frame_sniffer): New function. + (sparc64_sol2_init_abi): Set pc_in_sigtramp and append + sparc64_sol2_sigtramp_sniffer. + * sparc-tdep.h (sparc_sol2_pc_in_sigtramp): New prototype. * sparc-sol2-tdep.c (sparc_sol2_pc_in_sigtramp): Make global. diff --git a/gdb/sparc64-sol2-tdep.c b/gdb/sparc64-sol2-tdep.c index c8305080d14..1686b6ca3f6 100644 --- a/gdb/sparc64-sol2-tdep.c +++ b/gdb/sparc64-sol2-tdep.c @@ -20,13 +20,24 @@ Boston, MA 02111-1307, USA. */ #include "defs.h" +#include "frame.h" +#include "frame-unwind.h" #include "gdbarch.h" #include "symtab.h" #include "objfiles.h" #include "osabi.h" +#include "trad-frame.h" + +#include "gdb_assert.h" #include "sparc64-tdep.h" +/* The stack pointer is offset from the stack frame by a BIAS of 2047 + (0x7ff) for 64-bit code. BIAS is likely to be defined on SPARC + hosts, so undefine it first. */ +#undef BIAS +#define BIAS 2047 + /* From <sys/regset.h>. */ const struct sparc_gregset sparc64_sol2_gregset = { @@ -42,11 +53,115 @@ const struct sparc_gregset sparc64_sol2_gregset = }; +static struct sparc_frame_cache * +sparc64_sol2_sigtramp_frame_cache (struct frame_info *next_frame, + void **this_cache) +{ + struct sparc_frame_cache *cache; + CORE_ADDR mcontext_addr, addr; + int regnum; + + if (*this_cache) + return *this_cache; + + cache = sparc_frame_cache (next_frame, this_cache); + gdb_assert (cache == *this_cache); + + cache->saved_regs = trad_frame_alloc_saved_regs (next_frame); + + /* The third argument is a pointer to an instance of `ucontext_t', + which has a member `uc_mcontext' that contains the saved + registers. */ + regnum = (cache->frameless_p ? SPARC_O2_REGNUM : SPARC_I2_REGNUM); + mcontext_addr = frame_unwind_register_unsigned (next_frame, regnum) + 64; + + cache->saved_regs[SPARC64_CCR_REGNUM].addr = mcontext_addr + 0 * 8; + cache->saved_regs[SPARC64_PC_REGNUM].addr = mcontext_addr + 1 * 8; + cache->saved_regs[SPARC64_NPC_REGNUM].addr = mcontext_addr + 2 * 8; + cache->saved_regs[SPARC64_Y_REGNUM].addr = mcontext_addr + 3 * 8; + cache->saved_regs[SPARC64_ASI_REGNUM].addr = mcontext_addr + 19 * 8; + cache->saved_regs[SPARC64_FPRS_REGNUM].addr = mcontext_addr + 20 * 8; + + /* Since %g0 is always zero, keep the identity encoding. */ + for (regnum = SPARC_G1_REGNUM, addr = mcontext_addr + 4 * 8; + regnum <= SPARC_O7_REGNUM; regnum++, addr += 8) + cache->saved_regs[regnum].addr = addr; + + if (get_frame_memory_unsigned (next_frame, mcontext_addr + 21 * 8, 8)) + { + /* The register windows haven't been flushed. */ + for (regnum = SPARC_L0_REGNUM; regnum <= SPARC_I7_REGNUM; regnum++) + trad_frame_set_unknown (cache->saved_regs, regnum); + } + else + { + CORE_ADDR sp; + + addr = cache->saved_regs[SPARC_SP_REGNUM].addr; + sp = get_frame_memory_unsigned (next_frame, addr, 8); + for (regnum = SPARC_L0_REGNUM, addr = sp + BIAS; + regnum <= SPARC_I7_REGNUM; regnum++, addr += 8) + cache->saved_regs[regnum].addr = addr; + } + + return cache; +} + +static void +sparc64_sol2_sigtramp_frame_this_id (struct frame_info *next_frame, + void **this_cache, + struct frame_id *this_id) +{ + struct sparc_frame_cache *cache = + sparc64_sol2_sigtramp_frame_cache (next_frame, this_cache); + + (*this_id) = frame_id_build (cache->base, cache->pc); +} + +static void +sparc64_sol2_sigtramp_frame_prev_register (struct frame_info *next_frame, + void **this_cache, + int regnum, int *optimizedp, + enum lval_type *lvalp, + CORE_ADDR *addrp, + int *realnump, void *valuep) +{ + struct sparc_frame_cache *cache = + sparc64_sol2_sigtramp_frame_cache (next_frame, this_cache); + + trad_frame_prev_register (next_frame, cache->saved_regs, regnum, + optimizedp, lvalp, addrp, realnump, valuep); +} + +static const struct frame_unwind sparc64_sol2_sigtramp_frame_unwind = +{ + SIGTRAMP_FRAME, + sparc64_sol2_sigtramp_frame_this_id, + sparc64_sol2_sigtramp_frame_prev_register +}; + +static const struct frame_unwind * +sparc64_sol2_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 (sparc_sol2_pc_in_sigtramp (pc, name)) + return &sparc64_sol2_sigtramp_frame_unwind; + + return NULL; +} + + void sparc64_sol2_init_abi (struct gdbarch_info info, struct gdbarch *gdbarch) { struct gdbarch_tdep *tdep = gdbarch_tdep (gdbarch); + set_gdbarch_pc_in_sigtramp (gdbarch, sparc_sol2_pc_in_sigtramp); + frame_unwind_append_sniffer (gdbarch, sparc64_sol2_sigtramp_frame_sniffer); + sparc64_init_abi (info, gdbarch); /* Solaris has SVR4-style shared libraries... */ |