along with this program; if not, write to the Free Software
Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. */
-/* Mostly it's common to all HPPA's. */
-#include "pa/tm-hppa.h"
-/* Saved PC's are different, since there is millicode. */
-extern CORE_ADDR millicode_start, millicode_end;
+/* Actually, for a PA running HPUX the kernel calls the signal handler
+ without an intermediate trampoline. Luckily the kernel always sets
+ the return pointer for the signal handler to point to _sigreturn. */
+#define IN_SIGTRAMP(pc, name) (name && STREQ ("_sigreturn", name))
+
+/* For HPUX:
+
+ The signal context structure pointer is always saved at the base
+ of the frame which "calls" the signal handler. We only want to find
+ the hardware save state structure, which lives 10 32bit words into
+ sigcontext structure.
+
+ Within the hardware save state structure, registers are found in the
+ same order as the register numbers in GDB.
+
+ The kernel apparently sets %r31 in the saved state structure to point
+ to the active instruction when the signal was taken. Everything
+ else looks fairly reasonable. (I assume the kernel fixes %r31 from
+ within _sigreturn?. */
+
+#define FRAME_SAVED_PC_IN_SIGTRAMP(FRAME, TMP) \
+{ \
+ *(TMP) = read_memory_integer ((FRAME)->frame + (41 * 4) , 4); \
+}
+
+#define FRAME_BASE_BEFORE_SIGTRAMP(FRAME, TMP) \
+{ \
+ *(TMP) = read_memory_integer ((FRAME)->frame + (40 * 4), 4); \
+}
+
+#define FRAME_FIND_SAVED_REGS_IN_SIGTRAMP(FRAME, FSR) \
+{ \
+ int i; \
+ CORE_ADDR TMP; \
+ TMP = (FRAME)->frame + (10 * 4); \
+ for (i = 0; i < NUM_REGS; i++) \
+ { \
+ if (i == SP_REGNUM) \
+ (FSR)->regs[SP_REGNUM] = read_memory_integer (TMP + SP_REGNUM * 4, 4); \
+ else \
+ (FSR)->regs[i] = TMP + i * 4; \
+ } \
+}
/* We need to figure out where the text region is so that we use the
appropriate ptrace operator to manipulate text. Simply reading/writing
user space will crap out HPUX. */
#define NEED_TEXT_START_END
+
+/* Mostly it's common to all HPPA's. */
+#include "pa/tm-hppa.h"