Copyright 1990, 1991, 1993, 1994 Free Software Foundation, Inc.
Contributed by Cygnus Support. Written by Jim Kingdon.
-This file is part of GDB.
+ This file is part of GDB.
-This program is free software; you can redistribute it and/or modify
-it under the terms of the GNU General Public License as published by
-the Free Software Foundation; either version 2 of the License, or
-(at your option) any later version.
+ This program is free software; you can redistribute it and/or modify
+ it under the terms of the GNU General Public License as published by
+ the Free Software Foundation; either version 2 of the License, or
+ (at your option) any later version.
-This program is distributed in the hope that it will be useful,
-but WITHOUT ANY WARRANTY; without even the implied warranty of
-MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
-GNU General Public License for more details.
+ This program is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ GNU General Public License for more details.
-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., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */
+ 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., 59 Temple Place - Suite 330,
+ Boston, MA 02111-1307, USA. */
/* Parameters for an EB29K (a board which plugs into a PC and is
accessed through EBMON software running on the PC, which we
/*
* Converts an sdb register number to an internal gdb register number.
* Currently under epi, gr96->0...gr127->31...lr0->32...lr127->159, or...
- * gr64->0...gr95->31, lr0->32...lr127->159.
+ * gr64->0...gr95->31, lr0->32...lr127->159.
*/
#define SDB_REG_TO_REGNUM(value) \
(((value) >= 96 && (value) <= 127) ? ((value) - 96) : \
* register sets. Namely, gcc can compile (-mkernel-registers) so that
* it uses gr64-gr95 in stead of gr96-gr127.
*/
-#define MSP_HW_REGNUM 125 /* gr125 */
-#define RAB_HW_REGNUM 126 /* gr126 */
+#define MSP_HW_REGNUM 125 /* gr125 */
+#define RAB_HW_REGNUM 126 /* gr126 */
/* Convert Processor Special register #x to REGISTER_NAMES register # */
#define SR_REGNUM(x) \
/* This needs to be the memory stack pointer, not the register stack pointer,
to make call_function work right. */
#define SP_REGNUM MSP_REGNUM
-#define FP_REGNUM 33 /* lr1 */
+#define FP_REGNUM 33 /* lr1 */
/* Return register for transparent calling convention (gr122). */
#define TPC_REGNUM (122 - 96 + GR96_REGNUM)
#define RBP_REGNUM (VAB_REGNUM + 7)
#define TMC_REGNUM (VAB_REGNUM + 8)
#define TMR_REGNUM (VAB_REGNUM + 9)
-#define NPC_REGNUM (VAB_REGNUM + 10) /* pc0 */
-#define PC_REGNUM (VAB_REGNUM + 11) /* pc1 */
+#define NPC_REGNUM (VAB_REGNUM + 10) /* pc0 */
+#define PC_REGNUM (VAB_REGNUM + 11) /* pc1 */
#define PC2_REGNUM (VAB_REGNUM + 12)
#define MMU_REGNUM (VAB_REGNUM + 13)
#define LRU_REGNUM (VAB_REGNUM + 14)
#define IPA_REGNUM (VAB_REGNUM + 22)
#define IPB_REGNUM (VAB_REGNUM + 23)
-#endif /* !defined(REGISTER_NAMES) */
+#endif /* !defined(REGISTER_NAMES) */
/* Total amount of space needed to store our copies of the machine's
register state, the array `registers'. */
write_register_bytes (REGISTER_BYTE (RETURN_REGNUM), (char *)(VALBUF), \
TYPE_LENGTH (TYPE)); \
}
-\f
-/* *INDENT-OFF* */
+\f/* *INDENT-OFF* */
/* The a29k user's guide documents well what the stacks look like.
But what isn't so clear there is how this interracts with the
symbols, or with GDB.
alloca()), the result of the calculation msp + msize.
LOC_ARG, LOC_LOCAL - For GCC, these are relative to saved_msp.
- For high C, these are relative to msp (making alloca impossible).
+ For high C, these are relative to msp (making alloca impossible).
LOC_REGISTER, LOC_REGPARM - The register number is the number at the
- time the function is running (after the prologue), or in the case
- of LOC_REGPARM, may be a register number in the range 160-175.
+ time the function is running (after the prologue), or in the case
+ of LOC_REGPARM, may be a register number in the range 160-175.
The compilers do things like store an argument into memory, and then put out
a LOC_ARG for it, or put it into global registers and put out a
registers need to be filled in the function epilogue.
Consider the code:
- < call bar>
- loc1: . . .
- bar: sub gr1,gr1,rsize_b
- . . .
- add mfp,msp,0
- sub msp,msp,msize_b
- . . .
- < call foo >
- loc2: . . .
- foo: sub gr1,gr1,rsize_f
- . . .
- add mfp,msp,0
- sub msp,msp,msize_f
- . . .
- loc3: < suppose the inferior stops here >
-
- memory stack register stack
- | | |____________|
- | | |____loc1____|
- +------->|___________| | | ^
- | | ^ | | locals_b | |
- | | | | |____________| |
- | | | | | | | rsize_b
- | | | msize_b | | args_to_f | |
- | | | | |____________| |
- | | | | |____lr1_____| V
- | | V | |____loc2____|<----------------+
- | +--->|___________|<---------mfp | ^ |
- | | | ^ | | locals_f | | |
- | | | | msize_f | |____________| | |
- | | | | | | | | rsize_f |
- | | | V | | args | | |
- | | |___________|<msp |____________| | |
- | | |_____lr1____| V |
- | | |___garbage__| <- gr1 <----+ |
- | | | |
- | | | |
- | | pc=loc3 | |
- | | | |
- | | | |
- | | frame cache | |
- | | |_________________| | |
- | | |rsize=rsize_b | | |
- | | |msize=msize_b | | |
- +---|--------saved_msp | | |
- | |frame------------------------------------|---+
- | |pc=loc2 | |
- | |_________________| |
- | |rsize=rsize_f | |
- | |msize=msize_f | |
- +--------saved_msp | |
- |frame------------------------------------+
- |pc=loc3 |
- |_________________|
+ < call bar>
+ loc1: . . .
+ bar: sub gr1,gr1,rsize_b
+ . . .
+ add mfp,msp,0
+ sub msp,msp,msize_b
+ . . .
+ < call foo >
+ loc2: . . .
+ foo: sub gr1,gr1,rsize_f
+ . . .
+ add mfp,msp,0
+ sub msp,msp,msize_f
+ . . .
+ loc3: < suppose the inferior stops here >
+
+ memory stack register stack
+ | | |____________|
+ | | |____loc1____|
+ +------->|___________| | | ^
+ | | ^ | | locals_b | |
+ | | | | |____________| |
+ | | | | | | | rsize_b
+ | | | msize_b | | args_to_f | |
+ | | | | |____________| |
+ | | | | |____lr1_____| V
+ | | V | |____loc2____|<----------------+
+ | +--->|___________|<---------mfp | ^ |
+ | | | ^ | | locals_f | | |
+ | | | | msize_f | |____________| | |
+ | | | | | | | | rsize_f |
+ | | | V | | args | | |
+ | | |___________|<msp |____________| | |
+ | | |_____lr1____| V |
+ | | |___garbage__| <- gr1 <----+ |
+ | | | |
+ | | | |
+ | | pc=loc3 | |
+ | | | |
+ | | | |
+ | | frame cache | |
+ | | |_________________| | |
+ | | |rsize=rsize_b | | |
+ | | |msize=msize_b | | |
+ +---|--------saved_msp | | |
+ | |frame------------------------------------|---+
+ | |pc=loc2 | |
+ | |_________________| |
+ | |rsize=rsize_f | |
+ | |msize=msize_f | |
+ +--------saved_msp | |
+ |frame------------------------------------+
+ |pc=loc3 |
+ |_________________|
So, is that sufficiently confusing? Welcome to the 29000.
Notes:
* The frame for foo uses a memory frame pointer but the frame for
- bar does not. In the latter case the saved_msp is
- computed by adding msize to the saved_msp of the
- next frame.
+ bar does not. In the latter case the saved_msp is
+ computed by adding msize to the saved_msp of the
+ next frame.
* msize is in the frame cache only for high C's sake. */
/* *INDENT-ON* */
+
void read_register_stack ();
long read_register_stack_integer ();
\f
-#define FRAME_INIT_SAVED_REGS(fi) /*no-op*/
+#define FRAME_INIT_SAVED_REGS(fi) /*no-op */
#define EXTRA_FRAME_INFO \
CORE_ADDR saved_msp; \
#define INIT_FRAME_PC(fromleaf, fci) init_frame_pc(fromleaf, fci)
void init_frame_pc ();
-
\f
+
/* FRAME_CHAIN takes a FRAME
and produces the frame's chain-pointer.
enum lval_type;
struct frame_info;
#endif
-void a29k_get_saved_register PARAMS ((char *raw_buffer, int *optimized, CORE_ADDR *addrp, struct frame_info *frame, int regnum, enum lval_type *lvalp));
+void a29k_get_saved_register PARAMS ((char *raw_buffer, int *optimized, CORE_ADDR * addrp, struct frame_info * frame, int regnum, enum lval_type * lvalp));
#define GET_SAVED_REGISTER(raw_buffer, optimized, addrp, frame, regnum, lval) \
a29k_get_saved_register (raw_buffer, optimized, addrp, frame, regnum, lval)
\f
retaddr_dummy: This points to a breakpoint instruction in the dummy. */
/* *INDENT-ON* */
\f
+
+
/* Rsize for dummy frame, in bytes. */
/* Bytes for outgoing args, lr1, and retaddr. */
mtsrim cr, 15
loadm 0, 0, lr2, msp ; load first 16 words of arguments into registers
add msp, msp, 16 * 4 ; point to the remaining arguments
- CONST_INSN:
- const lr0,inf ; (replaced by half of target addr)
- consth lr0,inf ; (replaced by other half of target addr)
+ CONST_INSN:
+ const lr0,inf ; (replaced by half of target addr)
+ consth lr0,inf ; (replaced by other half of target addr)
calli lr0, lr0
aseq 0x40,gr1,gr1 ; nop
- BREAKPT_INSN:
- asneq 0x50,gr1,gr1 ; breakpoint (replaced by local breakpoint insn)
- */
+ BREAKPT_INSN:
+ asneq 0x50,gr1,gr1 ; breakpoint (replaced by local breakpoint insn)
+ */
#if TARGET_BYTE_ORDER == HOST_BYTE_ORDER
#define BS(const) const
BS(0x72500101)}
#define CALL_DUMMY_LENGTH (8 * 4)
-#define CALL_DUMMY_START_OFFSET 0 /* Start execution at beginning of dummy */
+#define CALL_DUMMY_START_OFFSET 0 /* Start execution at beginning of dummy */
/* Helper macro for FIX_CALL_DUMMY. WORDP is a long * which points to a
word in target byte order; bits 0-7 and 16-23 of *WORDP are replaced with
#else /* Target is little endian. */
#define STUFF_I16(WORDP, DATA) \
{
- *(char *)(WORDP) = ((DATA) & 0xff);
- *((char *)(WORDP) + 2) = (((DATA) >> 8) & 0xff);
- }
+*(char *) (WORDP) = ((DATA) & 0xff);
+*((char *) (WORDP) + 2) = (((DATA) >> 8) & 0xff);
+}
#endif /* Target is little endian. */
/* Insert the specified number of args and function address
(num), SYMBOL_SOURCE_NAME (sym)), (num) \
: (num))
-extern enum a29k_processor_types {
+extern enum a29k_processor_types
+{
a29k_unknown,
/* Bit 0x400 of the CPS does *not* identify freeze mode, i.e. 29000,
/* Bit 0x400 of the CPS does identify freeze mode, i.e. 29050. */
a29k_freeze_mode
-} processor_type;
+}
+processor_type;
/* We need three arguments for a general frame specification for the
"frame" or "info frame" command. */
projects / thirdparty / binutils-gdb.git / blobdiff