Free Software Foundation, Inc.
Contributed by IBM Corporation.
-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. */
-#ifdef __STDC__ /* Forward decls for prototypes */
+/* Forward decls for prototypes */
struct frame_info;
struct type;
struct value;
-#endif
/* Minimum possible text address in AIX */
/* We are missing register descriptions in the system header files. Sigh! */
-struct regs {
- int gregs [32]; /* general purpose registers */
- int pc; /* program conter */
- int ps; /* processor status, or machine state */
-};
+struct regs
+ {
+ int gregs[32]; /* general purpose registers */
+ int pc; /* program conter */
+ int ps; /* processor status, or machine state */
+ };
-struct fp_status {
- double fpregs [32]; /* floating GP registers */
-};
+struct fp_status
+ {
+ double fpregs[32]; /* floating GP registers */
+ };
/* To be used by skip_prologue. */
-struct rs6000_framedata {
- int offset; /* total size of frame --- the distance
- by which we decrement sp to allocate
- the frame */
- int saved_gpr; /* smallest # of saved gpr */
- int saved_fpr; /* smallest # of saved fpr */
- int alloca_reg; /* alloca register number (frame ptr) */
- char frameless; /* true if frameless functions. */
- char nosavedpc; /* true if pc not saved. */
- int gpr_offset; /* offset of saved gprs from prev sp */
- int fpr_offset; /* offset of saved fprs from prev sp */
- int lr_offset; /* offset of saved lr */
- int cr_offset; /* offset of saved cr */
-};
+struct rs6000_framedata
+ {
+ int offset; /* total size of frame --- the distance
+ by which we decrement sp to allocate
+ the frame */
+ int saved_gpr; /* smallest # of saved gpr */
+ int saved_fpr; /* smallest # of saved fpr */
+ int alloca_reg; /* alloca register number (frame ptr) */
+ char frameless; /* true if frameless functions. */
+ char nosavedpc; /* true if pc not saved. */
+ int gpr_offset; /* offset of saved gprs from prev sp */
+ int fpr_offset; /* offset of saved fprs from prev sp */
+ int lr_offset; /* offset of saved lr */
+ int cr_offset; /* offset of saved cr */
+ };
/* Define the byte order of the machine. */
/* Advance PC across any function entry prologue instructions
to reach some "real" code. */
-#define SKIP_PROLOGUE(pc) \
-do { \
- struct rs6000_framedata _frame; \
- pc = skip_prologue (pc, &_frame); \
-} while (0)
+extern CORE_ADDR rs6000_skip_prologue PARAMS ((CORE_ADDR));
+#define SKIP_PROLOGUE(pc) (rs6000_skip_prologue (pc))
-extern CORE_ADDR skip_prologue PARAMS((CORE_ADDR, struct rs6000_framedata *));
+extern CORE_ADDR skip_prologue PARAMS ((CORE_ADDR, struct rs6000_framedata *));
/* If PC is in some function-call trampoline code, return the PC
#define PROCESS_LINENUMBER_HOOK() aix_process_linenos ()
extern void aix_process_linenos PARAMS ((void));
-
+
/* Immediately after a function call, return the saved pc.
Can't go through the frames for this because on some machines
the new frame is not set up until the new function executes
handle it. */
#define PUSH_ARGUMENTS(nargs, args, sp, struct_return, struct_addr) \
- sp = push_arguments((nargs), (args), (sp), (struct_return), (struct_addr))
-extern CORE_ADDR push_arguments PARAMS ((int, struct value **, CORE_ADDR,
- int, CORE_ADDR));
+ (rs6000_push_arguments((nargs), (args), (sp), (struct_return), (struct_addr)))
+extern CORE_ADDR rs6000_push_arguments PARAMS ((int, struct value **, CORE_ADDR, int, CORE_ADDR));
/* BREAKPOINT_FROM_PC uses the program counter value to determine the
breakpoint that should be used */
#define FP0_REGNUM 32 /* Floating point register 0 */
#define GP0_REGNUM 0 /* GPR register 0 */
#define FP0_REGNUM 32 /* FPR (Floating point) register 0 */
-#define FPLAST_REGNUM 63 /* Last floating point register */
+#define FPLAST_REGNUM 63 /* Last floating point register */
/* Special purpose registers... */
/* P.S. keep these in the same order as in /usr/mstsave.h `mstsave'
structure, for easier processing */
-#define PC_REGNUM 64 /* Program counter (instruction address %iar)*/
+#define PC_REGNUM 64 /* Program counter (instruction address %iar) */
#define PS_REGNUM 65 /* Processor (or machine) status (%msr) */
#define CR_REGNUM 66 /* Condition register */
#define LR_REGNUM 67 /* Link register */
/* Total amount of space needed to store our copies of the machine's
register state, the array `registers'.
- 32 4-byte gpr's
- 32 8-byte fpr's
- 7 4-byte UISA special purpose registers,
- 16 4-byte segment registers,
- 32 4-byte standard OEA special-purpose registers,
+ 32 4-byte gpr's
+ 32 8-byte fpr's
+ 7 4-byte UISA special purpose registers,
+ 16 4-byte segment registers,
+ 32 4-byte standard OEA special-purpose registers,
and up to 64 4-byte non-standard OEA special purpose regs.
total: (+ (* 32 4) (* 32 8) (* 7 4) (* 16 4) (* 32 4) (* 64 4)) 860 bytes
Keep some extra space for now, in case to add more. */
into VALBUF. */
/* #define EXTRACT_RETURN_VALUE(TYPE,REGBUF,VALBUF) \
- memcpy (VALBUF, REGBUF, TYPE_LENGTH (TYPE)) */
+ memcpy (VALBUF, REGBUF, TYPE_LENGTH (TYPE)) */
#define EXTRACT_RETURN_VALUE(TYPE,REGBUF,VALBUF) \
extract_return_value(TYPE,REGBUF,VALBUF)
-extern void extract_return_value PARAMS ((struct type *, char [], char *));
+extern void extract_return_value PARAMS ((struct type *, char[], char *));
/* Write into appropriate registers a function return value
of type TYPE, given in virtual format. */
by FI does not have a frame on the stack associated with it. If it
does not, FRAMELESS is set to 1, else 0. */
-#define FRAMELESS_FUNCTION_INVOCATION(FI, FRAMELESS) \
- FRAMELESS = frameless_function_invocation (FI)
-
-extern int frameless_function_invocation PARAMS((struct frame_info *));
+extern int rs6000_frameless_function_invocation (struct frame_info *);
+#define FRAMELESS_FUNCTION_INVOCATION(FI) \
+ (rs6000_frameless_function_invocation (FI))
#define INIT_FRAME_PC_FIRST(fromleaf, prev) \
prev->pc = (fromleaf ? SAVED_PC_AFTER_CALL (prev->next) : \
prev->next ? FRAME_SAVED_PC (prev->next) : read_pc ());
-#define INIT_FRAME_PC(fromleaf, prev) /* nothing */
+#define INIT_FRAME_PC(fromleaf, prev) /* nothing */
extern void rs6000_init_extra_frame_info (int fromleaf, struct frame_info *);
#define INIT_EXTRA_FRAME_INFO(fromleaf, fi) rs6000_init_extra_frame_info (fromleaf, fi)
#define DEFAULT_LR_SAVE 8
/* Return saved PC from a frame */
-#define FRAME_SAVED_PC(FRAME) frame_saved_pc (FRAME)
+#define FRAME_SAVED_PC(FRAME) rs6000_frame_saved_pc (FRAME)
-extern unsigned long frame_saved_pc PARAMS ((struct frame_info *));
+extern unsigned long rs6000_frame_saved_pc (struct frame_info *);
extern CORE_ADDR rs6000_frame_args_address PARAMS ((struct frame_info *));
#define FRAME_ARGS_ADDRESS(FI) rs6000_frame_args_address (FI)
/* We can't tell how many args there are
now that the C compiler delays popping them. */
-#define FRAME_NUM_ARGS(val,fi) (val = -1)
+#define FRAME_NUM_ARGS(fi) (-1)
/* Return number of bytes at start of arglist that are not really args. */
/* This sequence of words is the instructions:
- mflr r0 // 0x7c0802a6
- // save fpr's
- stfd r?, num(r1) // 0xd8010000 there should be 32 of this??
- // save gpr's
- stm r0, num(r1) // 0xbc010000
- stu r1, num(r1) // 0x94210000
-
- // the function we want to branch might be in a different load
- // segment. reset the toc register. Note that the actual toc address
- // will be fix by fix_call_dummy () along with function address.
-
- st r2, 0x14(r1) // 0x90410014 save toc register
- liu r2, 0x1234 // 0x3c401234 reset a new toc value 0x12345678
- oril r2, r2,0x5678 // 0x60425678
-
- // load absolute address 0x12345678 to r0
- liu r0, 0x1234 // 0x3c001234
- oril r0, r0,0x5678 // 0x60005678
- mtctr r0 // 0x7c0903a6 ctr <- r0
- bctrl // 0x4e800421 jump subroutine 0x12345678 (%ctr)
- cror 0xf, 0xf, 0xf // 0x4def7b82
- brpt // 0x7d821008, breakpoint
- cror 0xf, 0xf, 0xf // 0x4def7b82 (for 8 byte alignment)
-
-
- We actually start executing by saving the toc register first, since the pushing
- of the registers is done by PUSH_DUMMY_FRAME. If this were real code,
- the arguments for the function called by the `bctrl' would be pushed
- between the `stu' and the `bctrl', and we could allow it to execute through.
- But the arguments have to be pushed by GDB after the PUSH_DUMMY_FRAME is done,
- and we cannot allow to push the registers again.
-*/
-
+ mflr r0 // 0x7c0802a6
+ // save fpr's
+ stfd r?, num(r1) // 0xd8010000 there should be 32 of this??
+ // save gpr's
+ stm r0, num(r1) // 0xbc010000
+ stu r1, num(r1) // 0x94210000
+
+ // the function we want to branch might be in a different load
+ // segment. reset the toc register. Note that the actual toc address
+ // will be fix by fix_call_dummy () along with function address.
+
+ st r2, 0x14(r1) // 0x90410014 save toc register
+ liu r2, 0x1234 // 0x3c401234 reset a new toc value 0x12345678
+ oril r2, r2,0x5678 // 0x60425678
+
+ // load absolute address 0x12345678 to r0
+ liu r0, 0x1234 // 0x3c001234
+ oril r0, r0,0x5678 // 0x60005678
+ mtctr r0 // 0x7c0903a6 ctr <- r0
+ bctrl // 0x4e800421 jump subroutine 0x12345678 (%ctr)
+ cror 0xf, 0xf, 0xf // 0x4def7b82
+ brpt // 0x7d821008, breakpoint
+ cror 0xf, 0xf, 0xf // 0x4def7b82 (for 8 byte alignment)
+
+
+ We actually start executing by saving the toc register first, since the pushing
+ of the registers is done by PUSH_DUMMY_FRAME. If this were real code,
+ the arguments for the function called by the `bctrl' would be pushed
+ between the `stu' and the `bctrl', and we could allow it to execute through.
+ But the arguments have to be pushed by GDB after the PUSH_DUMMY_FRAME is done,
+ and we cannot allow to push the registers again.
+ */
+
#define CALL_DUMMY {0x7c0802a6, 0xd8010000, 0xbc010000, 0x94210000, \
0x90410014, 0x3c401234, 0x60425678, \
0x3c001234, 0x60005678, 0x7c0903a6, 0x4e800421, \
/* Hook in rs6000-tdep.c for determining the TOC address when
calling functions in the inferior. */
-extern CORE_ADDR (*find_toc_address_hook) PARAMS ((CORE_ADDR));
+extern
+CORE_ADDR (*find_toc_address_hook) PARAMS ((CORE_ADDR));
/* xcoffread.c provides a function to determine the TOC offset
for a given object file.
It is used under native AIX configurations for determining the
TOC address when calling functions in the inferior. */
-#ifdef __STDC__
+
struct objfile;
-#endif
extern CORE_ADDR get_toc_offset PARAMS ((struct objfile *));
/* Usually a function pointer's representation is simply the address
#define CONVERT_FROM_FUNC_PTR_ADDR(ADDR) \
(is_magic_function_pointer (ADDR) ? read_memory_integer (ADDR, 4) : (ADDR))
-extern int is_magic_function_pointer PARAMS ((CORE_ADDR));
+ extern int is_magic_function_pointer PARAMS ((CORE_ADDR));
/* Flag for machine-specific stuff in shared files. FIXME */
#define IBM6000_TARGET
/* RS6000/AIX does not support PT_STEP. Has to be simulated. */
#define SOFTWARE_SINGLE_STEP_P 1
-extern void rs6000_software_single_step PARAMS ((unsigned int, int));
+ extern void rs6000_software_single_step PARAMS ((unsigned int, int));
#define SOFTWARE_SINGLE_STEP(sig,bp_p) rs6000_software_single_step (sig, bp_p)
/* If the current gcc for for this target does not produce correct debugging
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