From 14cd51f7793a9ce07bc435069f57269450141363 Mon Sep 17 00:00:00 2001
From: Stan Shebs <shebs@apple.com>
Date: Fri, 16 Apr 1999 01:35:26 +0000
Subject: Initial revision

---
 gdb/config/pa/tm-hppao.h | 96 ++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 96 insertions(+)
 create mode 100644 gdb/config/pa/tm-hppao.h

(limited to 'gdb/config/pa/tm-hppao.h')

diff --git a/gdb/config/pa/tm-hppao.h b/gdb/config/pa/tm-hppao.h
new file mode 100644
index 00000000000..7df42474744
--- /dev/null
+++ b/gdb/config/pa/tm-hppao.h
@@ -0,0 +1,96 @@
+/* Parameters for execution on an HP PA-RISC machine running OSF1, for GDB.
+   Contributed by the Center for Software Science at the
+   University of Utah (pa-gdb-bugs@cs.utah.edu).  */
+
+/* Define offsets to access CPROC stack when it does not have
+ * a kernel thread.
+ */
+#define MACHINE_CPROC_SP_OFFSET 20
+#define MACHINE_CPROC_PC_OFFSET 16
+#define MACHINE_CPROC_FP_OFFSET 12
+
+/*
+ * Software defined PSW masks.
+ */
+#define PSW_SS  0x10000000      /* Kernel managed single step */
+
+/* Thread flavors used in re-setting the T bit.
+ * @@ this is also bad for cross debugging.
+ */
+#define TRACE_FLAVOR		HP800_THREAD_STATE
+#define TRACE_FLAVOR_SIZE	HP800_THREAD_STATE_COUNT
+#define TRACE_SET(x,state) \
+	((struct hp800_thread_state *)state)->cr22 |= PSW_SS
+#define TRACE_CLEAR(x,state) \
+  	((((struct hp800_thread_state *)state)->cr22 &= ~PSW_SS), 1)
+
+/* For OSF1 (Should be close if not identical to BSD, but I haven't
+   tested it yet):
+
+   The signal context structure pointer is always saved at the base
+   of the frame + 0x4.
+
+   We get the PC & SP directly from the sigcontext structure itself.
+   For other registers we have to dive in a little deeper: 
+
+   The hardware save state pointer is at offset 0x10 within the 
+   signal context structure.
+
+   Within the hardware save state, registers are found in the same order
+   as the register numbers in GDB. */
+
+#define FRAME_SAVED_PC_IN_SIGTRAMP(FRAME, TMP) \
+{ \
+  *(TMP) = read_memory_integer ((FRAME)->frame + 0x4, 4); \
+  *(TMP) = read_memory_integer (*(TMP) + 0x18, 4); \
+}
+
+#define FRAME_BASE_BEFORE_SIGTRAMP(FRAME, TMP) \
+{ \
+  *(TMP) = read_memory_integer ((FRAME)->frame + 0x4, 4); \
+  *(TMP) = read_memory_integer (*(TMP) + 0x8, 4); \
+}
+
+#define FRAME_FIND_SAVED_REGS_IN_SIGTRAMP(FRAME, FSR) \
+{ \
+  int i; \
+  CORE_ADDR TMP; \
+  TMP = read_memory_integer ((FRAME)->frame + 0x4, 4); \
+  TMP = read_memory_integer (TMP + 0x10, 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; \
+    } \
+}
+
+/* OSF1 does not need the pc space queue restored.  */
+#define NO_PC_SPACE_QUEUE_RESTORE
+
+/* The mach kernel uses the recovery counter to implement single
+   stepping.  While this greatly simplifies the kernel support
+   necessary for single stepping, it unfortunately does the wrong
+   thing in the presense of a nullified instruction (gives control
+   back two insns after the nullifed insn).  This is an artifact
+   of the HP architecture (recovery counter doesn't tick for
+   nullified insns).
+
+   Do our best to avoid losing in such situations.  */
+#define INSTRUCTION_NULLIFIED \
+(({ \
+    int ipsw = (int)read_register(IPSW_REGNUM); \
+    if (ipsw & PSW_N)  \
+      { \
+        int pcoqt = (int)read_register(PCOQ_TAIL_REGNUM); \
+        write_register(PCOQ_HEAD_REGNUM, pcoqt); \
+        write_register(PCOQ_TAIL_REGNUM, pcoqt + 0x4); \
+        write_register(IPSW_REGNUM, ipsw & ~(PSW_N | PSW_B | PSW_X)); \
+        stop_pc = pcoqt; \
+      } \
+   }), 0) 
+
+/* It's mostly just the common stuff.  */
+
+#include "pa/tm-hppa.h"
-- 
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