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authorMartin Hunt <hunt@redhat.com>1996-10-22 17:27:51 +0000
committerMartin Hunt <hunt@redhat.com>1996-10-22 17:27:51 +0000
commit7eb7c902a92ef033de35e139c168c78cf1cdb314 (patch)
tree3561a3bd5c9d3610741321cbcb38e8c4a75ab95c /gdb/config/d10v
parent3b1af95c73bd9de8b85c7f66fc06ce9c0ec7cb79 (diff)
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Tue Oct 22 10:25:29 1996 Martin M. Hunt <hunt@pizza.cygnus.com>
* tm-d10v.h: Changes to allow stack backtraces and inferior function calls.
Diffstat (limited to 'gdb/config/d10v')
-rw-r--r--gdb/config/d10v/tm-d10v.h81
1 files changed, 51 insertions, 30 deletions
diff --git a/gdb/config/d10v/tm-d10v.h b/gdb/config/d10v/tm-d10v.h
index eb508e2..3b1cffe 100644
--- a/gdb/config/d10v/tm-d10v.h
+++ b/gdb/config/d10v/tm-d10v.h
@@ -19,15 +19,12 @@ Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */
/* Contributed by Martin Hunt, hunt@cygnus.com */
-
#define GDB_TARGET_IS_D10V
-
/* Define the bit, byte, and word ordering of the machine. */
#define TARGET_BYTE_ORDER BIG_ENDIAN
-
/* Offset from address of function to start of its code.
Zero on most machines. */
@@ -40,21 +37,12 @@ extern CORE_ADDR d10v_skip_prologue ();
#define SKIP_PROLOGUE(ip) \
{(ip) = d10v_skip_prologue(ip);}
-
-/* Immediately after a function call, return the saved pc.
- Can't always go through the frames for this because on some machines
- the new frame is not set up until the new function executes
- some instructions.
-
- The return address is the value saved in the PR register + 4 */
-
#define SAVED_PC_AFTER_CALL(frame) (read_register(LR_REGNUM) << 2 )
/* Stack grows downward. */
-
#define INNER_THAN <
- /* for a breakpoint, use "dbt || nop" */
+/* for a breakpoint, use "dbt || nop" */
#define BREAKPOINT {0x2f, 0x90, 0x5e, 0x00}
/* If your kernel resets the pc after the trap happens you may need to
@@ -127,13 +115,6 @@ extern CORE_ADDR d10v_skip_prologue ();
#define STORE_STRUCT_RETURN(ADDR, SP) \
{ write_register (2, (ADDR)); }
-/* Extract from an array REGBUF containing the (raw) register state
- a function return value of type TYPE, and copy that, in virtual format,
- into VALBUF. */
-
-#define EXTRACT_RETURN_VALUE(TYPE,REGBUF,VALBUF) \
- memcpy (VALBUF, (char *)(REGBUF), TYPE_LENGTH(TYPE))
-
/* Write into appropriate registers a function return value
of type TYPE, given in virtual format.
@@ -157,6 +138,7 @@ extern CORE_ADDR d10v_skip_prologue ();
#define EXTRA_FRAME_INFO \
CORE_ADDR return_pc; \
+ int dummy; \
int size;
#define INIT_EXTRA_FRAME_INFO(fromleaf, fi) \
@@ -195,25 +177,65 @@ extern CORE_ADDR d10v_skip_prologue ();
d10v_frame_find_saved_regs(frame_info, &(frame_saved_regs))
#define NAMES_HAVE_UNDERSCORE
+
+/*
+DUMMY FRAMES. Need these to support inferior function calls. They work
+like this on D10V: First we set a breakpoint at 0 or __start. Then we push
+all the registers onto the stack. Then put the function arguments in the proper
+registers and set r13 to our breakpoint address. Finally call the function directly.
+When it hits the breakpoint, clear the break point and pop the old register contents
+off the stack.
+*/
+
+#define CALL_DUMMY { }
+#define PUSH_DUMMY_FRAME
+#define CALL_DUMMY_START_OFFSET 0
+#define CALL_DUMMY_LOCATION AT_ENTRY_POINT
+#define CALL_DUMMY_BREAKPOINT_OFFSET (0)
+
+extern CORE_ADDR d10v_call_dummy_address PARAMS ((void));
+#define CALL_DUMMY_ADDRESS() d10v_call_dummy_address()
+
+#define FIX_CALL_DUMMY(dummyname, pc, fun, nargs, args, type, gcc_p) \
+d10v_fix_call_dummy (dummyname, pc, fun, nargs, args, type, gcc_p)
+
+#define PC_IN_CALL_DUMMY(pc, sp, frame_address) \
+ ((pc>>2) >= CALL_DUMMY_ADDRESS () \
+ && (pc>>2) <= (CALL_DUMMY_ADDRESS () + DECR_PC_AFTER_BREAK))
+
+#ifdef __STDC__ /* Forward decls for prototypes */
+struct type;
+struct value;
+#endif
+extern void d10v_fix_call_dummy PARAMS ((char *, CORE_ADDR, CORE_ADDR,
+ int, struct value **,
+ struct type *, int));
+#define PUSH_ARGUMENTS(nargs, args, sp, struct_return, struct_addr) \
+ sp = d10v_push_arguments((nargs), (args), (sp), (struct_return), (struct_addr))
+extern CORE_ADDR d10v_push_arguments PARAMS ((int, struct value **, CORE_ADDR, int, CORE_ADDR));
-typedef unsigned short INSN_WORD;
-#define ADDR_BITS_REMOVE(addr) ((addr))
+/* Extract from an array REGBUF containing the (raw) register state
+ a function return value of type TYPE, and copy that, in virtual format,
+ into VALBUF. */
+
+#define EXTRACT_RETURN_VALUE(TYPE,REGBUF,VALBUF) \
+d10v_extract_return_value(TYPE, REGBUF, VALBUF)
+ extern void
+d10v_extract_return_value PARAMS ((struct type *, char *, char *));
-#define CALL_DUMMY_LENGTH 10
/* Discard from the stack the innermost frame,
restoring all saved registers. */
-
#define POP_FRAME d10v_pop_frame();
#define REGISTER_SIZE 2
-# ifdef CC_HAS_LONG_LONG
-# define LONGEST long long
-# else
-# define LONGEST long
-# endif
+#ifdef CC_HAS_LONG_LONG
+# define LONGEST long long
+#else
+# define LONGEST long
+#endif
void d10v_write_register_pid PARAMS (( int regno, LONGEST val, int pid));
CORE_ADDR d10v_read_register_pid PARAMS ((int regno, int pid));
@@ -221,7 +243,6 @@ CORE_ADDR d10v_read_register_pid PARAMS ((int regno, int pid));
#define TARGET_READ_PC(pid) d10v_read_register_pid (PC_REGNUM, pid)
#define TARGET_WRITE_PC(val,pid) d10v_write_register_pid (PC_REGNUM, val, pid)
-
/* Number of bits in the appropriate type */
#define TARGET_INT_BIT (2 * TARGET_CHAR_BIT)
#define TARGET_PTR_BIT (2 * TARGET_CHAR_BIT)