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| author | Peter Schauer <Peter.Schauer@mytum.de> | 1994-01-31 16:23:48 +0000 |
|---|---|---|
| committer | Peter Schauer <Peter.Schauer@mytum.de> | 1994-01-31 16:23:48 +0000 |
| commit | 0434c1a0c91e92d7a73affd5332583266b20b158 (patch) | |
| tree | e6509bf78c79b55724eebb62b0ce285b6f64fc2a /gdb/alpha-tdep.c | |
| parent | ede7bc1c605459a09542b86b7d4b3294721a05ff (diff) | |
| download | gdb-0434c1a0c91e92d7a73affd5332583266b20b158.zip gdb-0434c1a0c91e92d7a73affd5332583266b20b158.tar.gz gdb-0434c1a0c91e92d7a73affd5332583266b20b158.tar.bz2 | |
* mdebugread.c (parse_procedure): Remove _sigtramp kludges for
alpha and irix. The _sigtramp case has to be handled properly
in the tdep files if we have no ecoff debugging info.
* alpha-tdep.c (alpha_frame_saved_pc, alpha_frame_chain),
mips-tdep.c (mips_frame_saved_pc): Handle signal handler frames
without PC_REGNUM kludge.
* mdebugread.c (fixup_sigtramp), mips-tdep.c (read_next_frame_reg):
Clean up handling of mips sigtramp frames, improve comments.
Diffstat (limited to 'gdb/alpha-tdep.c')
| -rw-r--r-- | gdb/alpha-tdep.c | 25 |
1 files changed, 17 insertions, 8 deletions
diff --git a/gdb/alpha-tdep.c b/gdb/alpha-tdep.c index a1b53e6..81061d3 100644 --- a/gdb/alpha-tdep.c +++ b/gdb/alpha-tdep.c @@ -1,5 +1,5 @@ /* Target-dependent code for the ALPHA architecture, for GDB, the GNU Debugger. - Copyright 1993 Free Software Foundation, Inc. + Copyright 1993, 1994 Free Software Foundation, Inc. This file is part of GDB. @@ -165,7 +165,10 @@ alpha_frame_saved_pc(frame) FRAME frame; { alpha_extra_func_info_t proc_desc = frame->proc_desc; - int pcreg = proc_desc ? PROC_PC_REG(proc_desc) : RA_REGNUM; + /* We have to get the saved pc from the sigcontext + if it is a signal handler frame. */ + int pcreg = frame->signal_handler_caller ? PC_REGNUM + : (proc_desc ? PROC_PC_REG(proc_desc) : RA_REGNUM); if (proc_desc && PROC_DESC_IS_DUMMY(proc_desc)) return read_memory_integer(frame->frame - 8, 8); @@ -428,17 +431,23 @@ alpha_frame_chain(frame) we loop forever if we see a zero size frame. */ if (PROC_FRAME_REG (proc_desc) == SP_REGNUM && PROC_FRAME_OFFSET (proc_desc) == 0 - /* The alpha __sigtramp routine is frameless and has a frame size - of zero. Luckily it is the only procedure which has PC_REGNUM - as PROC_PC_REG. */ - && PROC_PC_REG (proc_desc) != PC_REGNUM /* The previous frame from a sigtramp frame might be frameless and have frame size zero. */ && !frame->signal_handler_caller) - return 0; + { + /* The alpha __sigtramp routine is frameless and has a frame size + of zero, but we are able to backtrace through it. */ + char *name; + find_pc_partial_function (saved_pc, &name, + (CORE_ADDR *)NULL, (CORE_ADDR *)NULL); + if (IN_SIGTRAMP (saved_pc, name)) + return frame->frame; + else + return 0; + } else return read_next_frame_reg(frame, PROC_FRAME_REG(proc_desc)) - + PROC_FRAME_OFFSET(proc_desc); + + PROC_FRAME_OFFSET(proc_desc); } void |