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authorJ.T. Conklin <jtc@acorntoolworks.com>1994-08-19 00:06:47 +0000
committerJ.T. Conklin <jtc@acorntoolworks.com>1994-08-19 00:06:47 +0000
commitef4b379aabdb863aa520a9d66ec4d823e918ab1f (patch)
treee750a228afb13a5fffb66603ce28bca5b800968a /gdb
parentf4945271925a907e49f0d0a0b2ef8a9eab3998a2 (diff)
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* nlm/i386.c, nlm/i386.h: New files that contain i386 specific code.
Diffstat (limited to 'gdb')
-rw-r--r--gdb/ChangeLog4
-rw-r--r--gdb/nlm/i386.c88
-rw-r--r--gdb/nlm/i386.h13
3 files changed, 105 insertions, 0 deletions
diff --git a/gdb/ChangeLog b/gdb/ChangeLog
index 9325d41..c099f95 100644
--- a/gdb/ChangeLog
+++ b/gdb/ChangeLog
@@ -1,3 +1,7 @@
+Thu Aug 18 17:01:35 1994 J.T. Conklin (jtc@rtl.cygnus.com)
+
+ * nlm/i386.c, nlm/i386.h: New files that contain i386 specific code.
+
Thu Aug 18 14:39:46 1994 Stan Shebs (shebs@andros.cygnus.com)
* README: Grammar improvements, clarifications, updates.
diff --git a/gdb/nlm/i386.c b/gdb/nlm/i386.c
new file mode 100644
index 0000000..68132ce
--- /dev/null
+++ b/gdb/nlm/i386.c
@@ -0,0 +1,88 @@
+#include "i386.h"
+
+/* Get the registers out of the frame information. */
+
+static void
+frame_to_registers (frame, regs)
+ struct StackFrame *frame;
+ char *regs;
+{
+ /* Copy EAX -> EDI */
+ mem2hex (&frame->ExceptionEAX, &regs[0 * 4 * 2], 4 * 8, 0);
+
+ /* Copy EIP & PS */
+ mem2hex (&frame->ExceptionPC, &regs[8 * 4 * 2], 4 * 2, 0);
+
+ /* Copy CS, SS, DS */
+ mem2hex (&frame->ExceptionCS, &regs[10 * 4 * 2], 4 * 3, 0);
+
+ /* Copy ES */
+ mem2hex (&frame->ExceptionES, &regs[13 * 4 * 2], 4 * 1, 0);
+
+ /* Copy FS & GS */
+ mem2hex (&frame->ExceptionFS, &regs[14 * 4 * 2], 4 * 2, 0);
+}
+
+/* Put the registers back into the frame information. */
+
+static void
+registers_to_frame (regs, frame)
+ char *regs;
+ struct StackFrame *frame;
+{
+ /* Copy EAX -> EDI */
+ hex2mem (&regs[0 * 4 * 2], &frame->ExceptionEAX, 4 * 8, 0);
+
+ /* Copy EIP & PS */
+ hex2mem (&regs[8 * 4 * 2], &frame->ExceptionPC, 4 * 2, 0);
+
+ /* Copy CS, SS, DS */
+ hex2mem (&regs[10 * 4 * 2], &frame->ExceptionCS, 4 * 3, 0);
+
+ /* Copy ES */
+ hex2mem (&regs[13 * 4 * 2], &frame->ExceptionES, 4 * 1, 0);
+
+ /* Copy FS & GS */
+ hex2mem (&regs[14 * 4 * 2], &frame->ExceptionFS, 4 * 2, 0);
+}
+
+static void
+set_step_traps (frame)
+ struct StackFrame *frame;
+{
+ frame->ExceptionSystemFlags |= 0x100;
+}
+
+static void
+clear_step_traps (frame)
+ struct StackFrame *frame;
+{
+ frame->ExceptionSystemFlags &= ~0x100;
+}
+
+static void
+do_status (ptr, frame)
+ char *ptr;
+ struct StackFrame *frame;
+{
+ int sigval;
+
+ sigval = computeSignal (frame->ExceptionNumber);
+
+ sprintf (ptr, "T%02x", sigval);
+ ptr += 3;
+
+ sprintf (ptr, "%02x:", PC_REGNUM);
+ ptr = mem2hex (&frame->ExceptionPC, ptr + 3, 4, 0);
+ *ptr++ = ';';
+
+ sprintf (ptr, "%02x:", SP_REGNUM);
+ ptr = mem2hex (&frame->ExceptionESP, ptr + 3, 4, 0);
+ *ptr++ = ';';
+
+ sprintf (ptr, "%02x:", FP_REGNUM);
+ ptr = mem2hex (&frame->ExceptionEBP, ptr + 3, 4, 0);
+ *ptr++ = ';';
+
+ *ptr = '\000';
+}
diff --git a/gdb/nlm/i386.h b/gdb/nlm/i386.h
new file mode 100644
index 0000000..155702b
--- /dev/null
+++ b/gdb/nlm/i386.h
@@ -0,0 +1,13 @@
+/* Register values. All of these values *MUST* agree with tm.h */
+#define SP_REGNUM 4 /* Contains address of top of stack */
+#define PC_REGNUM 8 /* Contains program counter */
+#define FP_REGNUM 5 /* Virtual frame pointer */
+#define NUM_REGS 16 /* Number of machine registers */
+#define REGISTER_BYTES (NUM_REGS * 4) /* Total size of registers array */
+
+#define ExceptionPC ExceptionEIP
+#define DECR_PC_AFTER_BREAK 1 /* int 3 leaves PC pointing after insn */
+#define BREAKPOINT {0xcc}
+#define BREAKPOINT_SIZE (sizeof breakpoint_insn)
+
+#define StackFrame T_TSS_StackFrame