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| author | Randolph Chung <tausq@debian.org> | 2004-12-14 16:35:37 +0000 |
|---|---|---|
| committer | Randolph Chung <tausq@debian.org> | 2004-12-14 16:35:37 +0000 |
| commit | 1fb249302e4d9394a63c0b167c431de33872bc09 (patch) | |
| tree | 7f6f95df8ce8c91c9fde8170dc0718114545080d /gdb | |
| parent | 3ffc5b9b5bf3e21f985f48097333d58e1630b774 (diff) | |
| download | gdb-1fb249302e4d9394a63c0b167c431de33872bc09.zip gdb-1fb249302e4d9394a63c0b167c431de33872bc09.tar.gz gdb-1fb249302e4d9394a63c0b167c431de33872bc09.tar.bz2 | |
2004-12-14 Randolph Chung <tausq@debian.org>
* hppa-tdep.c (hppa_in_function_epilogue_p): New function.
(hppa_gdbarch_init): Set in_epilogue_p method.
Diffstat (limited to 'gdb')
| -rw-r--r-- | gdb/ChangeLog | 5 | ||||
| -rw-r--r-- | gdb/hppa-tdep.c | 40 |
2 files changed, 45 insertions, 0 deletions
diff --git a/gdb/ChangeLog b/gdb/ChangeLog index 12036a3..fd7e2fd 100644 --- a/gdb/ChangeLog +++ b/gdb/ChangeLog @@ -1,3 +1,8 @@ +2004-12-14 Randolph Chung <tausq@debian.org> + + * hppa-tdep.c (hppa_in_function_epilogue_p): New function. + (hppa_gdbarch_init): Set in_epilogue_p method. + 2004-12-14 Corinna Vinschen <vinschen@redhat.com> * sh-tdep.c (sh_extract_return_value_nofpu): Rename from diff --git a/gdb/hppa-tdep.c b/gdb/hppa-tdep.c index c17965b..44c6f8d 100644 --- a/gdb/hppa-tdep.c +++ b/gdb/hppa-tdep.c @@ -625,6 +625,44 @@ find_unwind_entry (CORE_ADDR pc) return NULL; } +/* The epilogue is defined here as the area either on the `bv' instruction + itself or an instruction which destroys the function's stack frame. + + We do not assume that the epilogue is at the end of a function as we can + also have return sequences in the middle of a function. */ +static int +hppa_in_function_epilogue_p (struct gdbarch *gdbarch, CORE_ADDR pc) +{ + unsigned long status; + unsigned int inst; + char buf[4]; + int off; + + status = deprecated_read_memory_nobpt (pc, buf, 4); + if (status != 0) + return 0; + + inst = extract_unsigned_integer (buf, 4); + + /* The most common way to perform a stack adjustment ldo X(sp),sp + We are destroying a stack frame if the offset is negative. */ + if ((inst & 0xffffc000) == 0x37de0000 + && hppa_extract_14 (inst) < 0) + return 1; + + /* ldw,mb D(sp),X or ldd,mb D(sp),X */ + if (((inst & 0x0fc010e0) == 0x0fc010e0 + || (inst & 0x0fc010e0) == 0x0fc010e0) + && hppa_extract_14 (inst) < 0) + return 1; + + /* bv %r0(%rp) or bv,n %r0(%rp) */ + if (inst == 0xe840c000 || inst == 0xe840c002) + return 1; + + return 0; +} + static const unsigned char * hppa_breakpoint_from_pc (CORE_ADDR *pc, int *len) { @@ -2578,6 +2616,8 @@ hppa_gdbarch_init (struct gdbarch_info info, struct gdbarch_list *arches) /* The following gdbarch vector elements do not depend on the address size, or in any other gdbarch element previously set. */ set_gdbarch_skip_prologue (gdbarch, hppa_skip_prologue); + set_gdbarch_in_function_epilogue_p (gdbarch, + hppa_in_function_epilogue_p); set_gdbarch_inner_than (gdbarch, core_addr_greaterthan); set_gdbarch_sp_regnum (gdbarch, HPPA_SP_REGNUM); set_gdbarch_fp0_regnum (gdbarch, HPPA_FP0_REGNUM); |