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| author | Peter Schauer <Peter.Schauer@mytum.de> | 1993-08-17 08:49:07 +0000 |
|---|---|---|
| committer | Peter Schauer <Peter.Schauer@mytum.de> | 1993-08-17 08:49:07 +0000 |
| commit | 7b98a091361fd9660ed38f0e196a605bf324e160 (patch) | |
| tree | d09e33c33861ec3c806103e1accd9bb08a8e79e4 /gdb/config/vax | |
| parent | d541211d612abbf36c99e7204b7cf3db6ba81aa5 (diff) | |
| download | gdb-7b98a091361fd9660ed38f0e196a605bf324e160.zip gdb-7b98a091361fd9660ed38f0e196a605bf324e160.tar.gz gdb-7b98a091361fd9660ed38f0e196a605bf324e160.tar.bz2 | |
* config/i386/tm-i386bsd.h (SIGTRAMP_START, SIGTRAMP_END, FRAME_CHAIN,
FRAMELESS_FUNCTION_INVOCATION, FRAME_SAVED_PC, SIGCONTEXT_PC_OFFSET):
Define to make backtracing through sigtramp work.
* config/vax/tm-vax.h (SIGTRAMP_START, SIGTRAMP_END, TARGET_UPAGES,
FRAME_SAVED_PC, SIGCONTEXT_PC_OFFSET): Ditto.
Diffstat (limited to 'gdb/config/vax')
| -rw-r--r-- | gdb/config/vax/tm-vax.h | 36 |
1 files changed, 12 insertions, 24 deletions
diff --git a/gdb/config/vax/tm-vax.h b/gdb/config/vax/tm-vax.h index 6fd2454..856b889 100644 --- a/gdb/config/vax/tm-vax.h +++ b/gdb/config/vax/tm-vax.h @@ -17,26 +17,6 @@ You should have received a copy of the GNU General Public License along with this program; if not, write to the Free Software Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. */ -/* There is one known bug with VAX support that I don't know how to - fix: if you do a backtrace from a signal handler, you get something - like: -#0 0xbc in kill (592, 3) -#1 0x7f in hand (...) (...) -#2 0x7fffec7e in ?? (2, 0, 2147478112, 94) - ^^ GDB doesn't know about sigtramp -#3 0x7fffec70 in ?? (592, 2) - ^^^^^^^^^^ wrong address -#4 0xae in main (...) (...) - -when the correct backtrace (as given by adb) is: -_kill(250,3) from _hand+21 -_hand(2,0,7fffea60,5e) from 7fffec7e -sigtramp(2,0,7fffea60,5e) from _kill+4 -_kill(250,2) from _main+2e -_main(1,7fffeac4,7fffeacc) from start+3d - -If anyone knows enough about VAX BSD to fix this, please send the -fix to bug-gdb@prep.ai.mit.edu. */ #define TARGET_BYTE_ORDER LITTLE_ENDIAN @@ -76,14 +56,15 @@ fix to bug-gdb@prep.ai.mit.edu. */ #define SAVED_PC_AFTER_CALL(frame) FRAME_SAVED_PC(frame) -#define TARGET_UPAGES 10 +#define TARGET_UPAGES 14 #define TARGET_NBPG 512 #define STACK_END_ADDR (0x80000000 - (TARGET_UPAGES * TARGET_NBPG)) /* On the VAX, sigtramp is in the u area. Can't check the exact addresses because for cross-debugging we don't have VAX include files around. This should be close enough. */ -#define IN_SIGTRAMP(pc, name) ((pc) >= STACK_END_ADDR && (pc < 0x80000000)) +#define SIGTRAMP_START STACK_END_ADDR +#define SIGTRAMP_END 0x80000000 /* Stack grows downward. */ @@ -231,9 +212,16 @@ fix to bug-gdb@prep.ai.mit.edu. */ /* On the vax, all functions have frames. */ #define FRAMELESS_FUNCTION_INVOCATION(FI, FRAMELESS) {(FRAMELESS) = 0;} -/* Saved Pc. */ +/* Saved Pc. Get it from sigcontext if within sigtramp. */ -#define FRAME_SAVED_PC(FRAME) (read_memory_integer ((FRAME)->frame + 16, 4)) +/* Offset to saved PC in sigcontext, from <sys/signal.h>. */ +#define SIGCONTEXT_PC_OFFSET 12 + +#define FRAME_SAVED_PC(FRAME) \ + (((FRAME)->signal_handler_caller \ + ? sigtramp_saved_pc (FRAME) \ + : read_memory_integer ((FRAME)->frame + 16, 4)) \ + ) /* Cannot find the AP register value directly from the FP value. Must find it saved in the frame called by this one, or in the AP |