/* Parameters for target execution on an RS6000, for GDB, the GNU debugger.
- Copyright 1986, 1987, 1989, 1991, 1992, 1993, 1994, 1997
+ Copyright 1986, 1987, 1989, 1991, 1992, 1993, 1994, 1995, 1996, 1997,
+ 1998, 1999, 2000
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 */
-struct frame_info;
-struct type;
-struct value;
-#endif
+#define GDB_MULTI_ARCH 1
/* Minimum possible text address in AIX */
#define TEXT_SEGMENT_BASE 0x10000000
-/* Load segment of a given pc value. */
-
-#define PC_LOAD_SEGMENT(PC) pc_load_segment_name(PC)
-extern char *pc_load_segment_name PARAMS ((CORE_ADDR));
-
-/* AIX cc seems to get this right. */
-
-#define BELIEVE_PCC_PROMOTION 1
-
-/* return true if a given `pc' value is in `call dummy' function. */
-/* FIXME: This just checks for the end of the stack, which is broken
- for things like stepping through gcc nested function stubs. */
-#define PC_IN_CALL_DUMMY(STOP_PC, STOP_SP, STOP_FRAME_ADDR) \
- (STOP_SP < STOP_PC && STOP_PC < STACK_END_ADDR)
-
-#if 0
-extern unsigned int text_start, data_start;
-extern char *corefile;
-#endif
-extern int inferior_pid;
-
-/* 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 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 */
-};
-
-/* Define the byte order of the machine. */
-
-#define TARGET_BYTE_ORDER BIG_ENDIAN
-
-/* AIX's assembler doesn't grok dollar signs in identifiers.
- So we use dots instead. This item must be coordinated with G++. */
-#undef CPLUS_MARKER
-#define CPLUS_MARKER '.'
-
-/* Offset from address of function to start of its code.
- Zero on most machines. */
-
-#define FUNCTION_START_OFFSET 0
-
-/* 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 skip_prologue PARAMS((CORE_ADDR, struct rs6000_framedata *));
+/* Return whether PC in function NAME is in code that should be skipped when
+ single-stepping. */
+#define IN_SOLIB_RETURN_TRAMPOLINE(pc, name) \
+ rs6000_in_solib_return_trampoline (pc, name)
+extern int rs6000_in_solib_return_trampoline (CORE_ADDR, char *);
/* If PC is in some function-call trampoline code, return the PC
where the function itself actually starts. If not, return NULL. */
-#define SKIP_TRAMPOLINE_CODE(pc) skip_trampoline_code (pc)
-extern CORE_ADDR skip_trampoline_code PARAMS ((CORE_ADDR));
+#define SKIP_TRAMPOLINE_CODE(pc) rs6000_skip_trampoline_code (pc)
+extern CORE_ADDR rs6000_skip_trampoline_code (CORE_ADDR);
/* Number of trap signals we need to skip over, once the inferior process
starts running. */
once, when we are closing the current symbol table in end_symtab(). */
#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
- some instructions. */
-
-#define SAVED_PC_AFTER_CALL(frame) read_register (LR_REGNUM)
-
-/* Address of end of stack space. */
-
-#define STACK_END_ADDR 0x2ff80000
-
-/* Stack grows downward. */
-
-#define INNER_THAN(lhs,rhs) ((lhs) < (rhs))
-
-/* This is how arguments pushed onto stack or passed in registers.
- Stack must be aligned on 64-bit boundaries when synthesizing
- function calls. We don't need STACK_ALIGN, PUSH_ARGUMENTS will
- 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));
-
-/* BREAKPOINT_FROM_PC uses the program counter value to determine the
- breakpoint that should be used */
-extern breakpoint_from_pc_fn rs6000_breakpoint_from_pc;
-#define BREAKPOINT_FROM_PC(pcptr, lenptr) rs6000_breakpoint_from_pc (pcptr, lenptr)
-
-/* Amount PC must be decremented by after a breakpoint.
- This is often the number of bytes in BREAKPOINT
- but not always. */
-
-#define DECR_PC_AFTER_BREAK 0
-
-/* Say how long (ordinary) registers are. This is a piece of bogosity
- used in push_word and a few other places; REGISTER_RAW_SIZE is the
- real way to know how big a register is. */
-
-#define REGISTER_SIZE 4
-
-/* Number of machine registers */
-
-#define NUM_REGS 71
-
-/* Initializer for an array of names of registers.
- There should be NUM_REGS strings in this initializer. */
-
-#define REGISTER_NAMES \
- {"r0", "r1", "r2", "r3", "r4", "r5", "r6", "r7", \
- "r8", "r9", "r10","r11","r12","r13","r14","r15", \
- "r16","r17","r18","r19","r20","r21","r22","r23", \
- "r24","r25","r26","r27","r28","r29","r30","r31", \
- "f0", "f1", "f2", "f3", "f4", "f5", "f6", "f7", \
- "f8", "f9", "f10","f11","f12","f13","f14","f15", \
- "f16","f17","f18","f19","f20","f21","f22","f23", \
- "f24","f25","f26","f27","f28","f29","f30","f31", \
- "pc", "ps", "cnd", "lr", "cnt", "xer", "mq" }
+extern void aix_process_linenos (void);
/* Register numbers of various important registers.
Note that some of these values are "real" register numbers,
to be actual register numbers as far as the user is concerned
but do serve to get the desired values when passed to read_register. */
-#define FP_REGNUM 1 /* Contains address of executing stack frame */
-#define SP_REGNUM 1 /* Contains address of top of stack */
-#define TOC_REGNUM 2 /* TOC register */
#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 */
-
-/* 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 PS_REGNUM 65 /* Processor (or machine) status (%msr) */
-#define CR_REGNUM 66 /* Condition register */
-#define LR_REGNUM 67 /* Link register */
-#define CTR_REGNUM 68 /* Count register */
-#define XER_REGNUM 69 /* Fixed point exception registers */
-#define MQ_REGNUM 70 /* Multiply/quotient register */
-
-#define FIRST_SP_REGNUM 64 /* first special register number */
-#define LAST_SP_REGNUM 70 /* last special register number */
-
-/* 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 special purpose registers,
-
- total 416 bytes. Keep some extra space for now, in case to add more. */
-
-#define REGISTER_BYTES 420
-
-
-/* Index within `registers' of the first byte of the space for
- register N. */
-
-#define REGISTER_BYTE(N) \
- ( \
- ((N) > FPLAST_REGNUM) ? ((((N) - FPLAST_REGNUM -1) * 4) + 384)\
- :((N) >= FP0_REGNUM) ? ((((N) - FP0_REGNUM) * 8) + 128) \
- :((N) * 4) )
-
-/* Number of bytes of storage in the actual machine representation
- for register N. */
-/* Note that the unsigned cast here forces the result of the
- subtractiion to very high positive values if N < FP0_REGNUM */
-
-#define REGISTER_RAW_SIZE(N) (((unsigned)(N) - FP0_REGNUM) < 32 ? 8 : 4)
-
-/* Number of bytes of storage in the program's representation
- for register N. On the RS6000, all regs are 4 bytes
- except the floating point regs which are 8-byte doubles. */
-
-#define REGISTER_VIRTUAL_SIZE(N) (((unsigned)(N) - FP0_REGNUM) < 32 ? 8 : 4)
-
-/* Largest value REGISTER_RAW_SIZE can have. */
-
-#define MAX_REGISTER_RAW_SIZE 8
-
-/* Largest value REGISTER_VIRTUAL_SIZE can have. */
-
-#define MAX_REGISTER_VIRTUAL_SIZE 8
-
-/* convert a dbx stab register number (from `r' declaration) to a gdb REGNUM */
-
-#define STAB_REG_TO_REGNUM(value) (value)
-
-/* Nonzero if register N requires conversion
- from raw format to virtual format.
- The register format for rs6000 floating point registers is always
- double, we need a conversion if the memory format is float. */
-
-#define REGISTER_CONVERTIBLE(N) ((N) >= FP0_REGNUM && (N) <= FPLAST_REGNUM)
-
-/* Convert data from raw format for register REGNUM in buffer FROM
- to virtual format with type TYPE in buffer TO. */
-
-#define REGISTER_CONVERT_TO_VIRTUAL(REGNUM,TYPE,FROM,TO) \
-{ \
- if (TYPE_LENGTH (TYPE) != REGISTER_RAW_SIZE (REGNUM)) \
- { \
- double val = extract_floating ((FROM), REGISTER_RAW_SIZE (REGNUM)); \
- store_floating ((TO), TYPE_LENGTH (TYPE), val); \
- } \
- else \
- memcpy ((TO), (FROM), REGISTER_RAW_SIZE (REGNUM)); \
-}
-
-/* Convert data from virtual format with type TYPE in buffer FROM
- to raw format for register REGNUM in buffer TO. */
-
-#define REGISTER_CONVERT_TO_RAW(TYPE,REGNUM,FROM,TO) \
-{ \
- if (TYPE_LENGTH (TYPE) != REGISTER_RAW_SIZE (REGNUM)) \
- { \
- double val = extract_floating ((FROM), TYPE_LENGTH (TYPE)); \
- store_floating ((TO), REGISTER_RAW_SIZE (REGNUM), val); \
- } \
- else \
- memcpy ((TO), (FROM), REGISTER_RAW_SIZE (REGNUM)); \
-}
-
-/* Return the GDB type object for the "standard" data type
- of data in register N. */
-
-#define REGISTER_VIRTUAL_TYPE(N) \
- (((unsigned)(N) - FP0_REGNUM) < 32 ? builtin_type_double : builtin_type_int)
-
-/* Store the address of the place in which to copy the structure the
- subroutine will return. This is called from call_function. */
-/* in RS6000, struct return addresses are passed as an extra parameter in r3.
- In function return, callee is not responsible of returning this address back.
- Since gdb needs to find it, we will store in a designated variable
- `rs6000_struct_return_address'. */
-
-extern CORE_ADDR rs6000_struct_return_address;
-
-#define STORE_STRUCT_RETURN(ADDR, SP) \
- { write_register (3, (ADDR)); \
- rs6000_struct_return_address = (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, 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 *));
-
-/* Write into appropriate registers a function return value
- of type TYPE, given in virtual format. */
-
-#define STORE_RETURN_VALUE(TYPE,VALBUF) \
- { \
- if (TYPE_CODE (TYPE) == TYPE_CODE_FLT) \
- \
- /* Floating point values are returned starting from FPR1 and up. \
- Say a double_double_double type could be returned in \
- FPR1/FPR2/FPR3 triple. */ \
- \
- write_register_bytes (REGISTER_BYTE (FP0_REGNUM+1), (VALBUF), \
- TYPE_LENGTH (TYPE)); \
- else \
- /* Everything else is returned in GPR3 and up. */ \
- write_register_bytes (REGISTER_BYTE (GP0_REGNUM+3), (VALBUF), \
- TYPE_LENGTH (TYPE)); \
- }
-
-
-/* Extract from an array REGBUF containing the (raw) register state
- the address in which a function should return its structure value,
- as a CORE_ADDR (or an expression that can be used as one). */
-
-#define EXTRACT_STRUCT_VALUE_ADDRESS(REGBUF) rs6000_struct_return_address
-\f
-/* Describe the pointer in each stack frame to the previous stack frame
- (its caller). */
-
-/* FRAME_CHAIN takes a frame's nominal address
- and produces the frame's chain-pointer. */
-
-/* In the case of the RS6000, the frame's nominal address
- is the address of a 4-byte word containing the calling frame's address. */
-
-#define FRAME_CHAIN(thisframe) rs6000_frame_chain (thisframe)
-CORE_ADDR rs6000_frame_chain PARAMS ((struct frame_info *));
+#define FPLAST_REGNUM 63 /* Last floating point register */
/* Define other aspects of the stack frame. */
-/* A macro that tells us whether the function invocation represented
- 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 *));
-
-/* Functions calling alloca() change the value of the stack pointer. We
- need to use initial stack pointer (which is saved in r31 by gcc) in
- such cases. If a compiler emits traceback table, then we should use the
- alloca register specified in traceback table. FIXME. */
-/* Also, it is a good idea to cache information about frame's saved registers
- in the frame structure to speed things up. See tm-m88k.h. FIXME. */
-
-#define EXTRA_FRAME_INFO \
- CORE_ADDR initial_sp; /* initial stack pointer. */ \
- struct frame_saved_regs *cache_fsr; /* saved registers */
-
-#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_EXTRA_FRAME_INFO(fromleaf, fi) \
- fi->initial_sp = 0; \
- fi->cache_fsr = 0; \
- if (fi->next != (CORE_ADDR)0 \
- && fi->pc < TEXT_SEGMENT_BASE) \
- /* We're in get_prev_frame_info */ \
- /* and this is a special signal frame. */ \
- /* (fi->pc will be some low address in the kernel, */ \
- /* to which the signal handler returns). */ \
- fi->signal_handler_caller = 1;
-
-/* If the kernel has to deliver a signal, it pushes a sigcontext
- structure on the stack and then calls the signal handler, passing
- the address of the sigcontext in an argument register. Usually
- the signal handler doesn't save this register, so we have to
- access the sigcontext structure via an offset from the signal handler
- frame.
- The following constants were determined by experimentation on AIX 3.2. */
-#define SIG_FRAME_PC_OFFSET 96
-#define SIG_FRAME_LR_OFFSET 108
-#define SIG_FRAME_FP_OFFSET 284
-
-/* Default offset from SP where the LR is stored */
-#define DEFAULT_LR_SAVE 8
-
-/* Return saved PC from a frame */
-#define FRAME_SAVED_PC(FRAME) frame_saved_pc (FRAME)
-
-extern unsigned long frame_saved_pc PARAMS ((struct frame_info *));
-
-#define FRAME_ARGS_ADDRESS(FI) \
- (((struct frame_info*)(FI))->initial_sp ? \
- ((struct frame_info*)(FI))->initial_sp : \
- frame_initial_stack_address (FI))
-extern CORE_ADDR frame_initial_stack_address PARAMS ((struct frame_info *));
-
-#define FRAME_LOCALS_ADDRESS(FI) FRAME_ARGS_ADDRESS(FI)
-
-
-/* Set VAL to the number of args passed to frame described by FI.
- Can set VAL to -1, meaning no way to tell. */
-
-/* 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)
-
-/* Return number of bytes at start of arglist that are not really args. */
-
-#define FRAME_ARGS_SKIP 8 /* Not sure on this. FIXMEmgo */
-
-/* Put here the code to store, into a struct frame_saved_regs,
- the addresses of the saved registers of frame described by FRAME_INFO.
- This includes special registers such as pc and fp saved in special
- ways in the stack frame. sp is even more special:
- the address we return for it IS the sp for the next frame. */
-/* In the following implementation for RS6000, we did *not* save sp. I am
- not sure if it will be needed. The following macro takes care of gpr's
- and fpr's only. */
-
-#define FRAME_FIND_SAVED_REGS(FRAME_INFO, FRAME_SAVED_REGS) \
-{ \
- int ii; \
- CORE_ADDR frame_addr, func_start; \
- struct rs6000_framedata fdata; \
- \
- /* find the start of the function and collect info about its frame. */ \
- \
- func_start = get_pc_function_start ((FRAME_INFO)->pc) + FUNCTION_START_OFFSET; \
- (void) skip_prologue (func_start, &fdata); \
- memset (&(FRAME_SAVED_REGS), '\0', sizeof (FRAME_SAVED_REGS)); \
- \
- /* if there were any saved registers, figure out parent's stack pointer. */ \
- /* the following is true only if the frame doesn't have a call to alloca(), \
- FIXME. */ \
- if (fdata.saved_fpr == 0 && fdata.saved_gpr == 0 && \
- fdata.lr_offset == 0 && fdata.cr_offset == 0) { \
- frame_addr = 0; \
- \
- } else if ((FRAME_INFO)->prev && (FRAME_INFO)->prev->frame) { \
- frame_addr = (FRAME_INFO)->prev->frame; \
- \
- } else { \
- frame_addr = read_memory_integer ((FRAME_INFO)->frame, 4); \
- } \
- \
- /* if != -1, fdata.saved_fpr is the smallest number of saved_fpr. All \
- fpr's from saved_fpr to f31 are saved. */ \
- if (fdata.saved_fpr >= 0) { \
- int fpr_offset = frame_addr + fdata.fpr_offset; \
- for (ii = fdata.saved_fpr; ii < 32; ii++) { \
- (FRAME_SAVED_REGS).regs [FP0_REGNUM + ii] = fpr_offset; \
- fpr_offset += 8; \
- } \
- } \
- \
- /* if != -1, fdata.saved_gpr is the smallest number of saved_gpr. All \
- gpr's from saved_gpr to r31 are saved. */ \
- if (fdata.saved_gpr >= 0) { \
- int gpr_offset = frame_addr + fdata.gpr_offset; \
- for (ii = fdata.saved_gpr; ii < 32; ii++) { \
- (FRAME_SAVED_REGS).regs [ii] = gpr_offset; \
- gpr_offset += 4; \
- } \
- } \
- \
- /* If != 0, fdata.cr_offset is the offset from the frame that holds \
- the CR */ \
- if (fdata.cr_offset != 0) { \
- (FRAME_SAVED_REGS).regs [CR_REGNUM] = frame_addr + fdata.cr_offset; \
- } \
- \
- /* If != 0, fdata.cr_offset is the offset from the frame that holds \
- the LR */ \
- if (fdata.lr_offset != 0) { \
- (FRAME_SAVED_REGS).regs [LR_REGNUM] = frame_addr + fdata.lr_offset; \
- } \
-}
-
-\f
-/* Things needed for making the inferior call functions. */
-
-/* Push an empty stack frame, to record the current PC, etc. */
-/* Change these names into rs6k_{push, pop}_frame(). FIXMEmgo. */
-
-#define PUSH_DUMMY_FRAME push_dummy_frame ()
-extern void push_dummy_frame PARAMS ((void));
-
-/* Discard from the stack the innermost frame,
- restoring all saved registers. */
-
-#define POP_FRAME pop_frame ()
-extern void pop_frame PARAMS ((void));
-
-/* 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.
-*/
-
-#define CALL_DUMMY {0x7c0802a6, 0xd8010000, 0xbc010000, 0x94210000, \
- 0x90410014, 0x3c401234, 0x60425678, \
- 0x3c001234, 0x60005678, 0x7c0903a6, 0x4e800421, \
- 0x4def7b82, 0x7d821008, 0x4def7b82 }
+#define DEPRECATED_INIT_FRAME_PC_FIRST(fromleaf, prev) \
+ (fromleaf ? SAVED_PC_AFTER_CALL (prev->next) : \
+ prev->next ? FRAME_SAVED_PC (prev->next) : read_pc ())
+#define INIT_FRAME_PC(fromleaf, prev) (init_frame_pc_noop (fromleaf, prev))
+/* Flag for machine-specific stuff in shared files. FIXME */
+#define IBM6000_TARGET
-/* keep this as multiple of 8 (%sp requires 8 byte alignment) */
-#define CALL_DUMMY_LENGTH 56
+/* RS6000/AIX does not support PT_STEP. Has to be simulated. */
-#define CALL_DUMMY_START_OFFSET 16
+#define SOFTWARE_SINGLE_STEP_P() 1
+extern void rs6000_software_single_step (enum target_signal, int);
+#define SOFTWARE_SINGLE_STEP(sig,bp_p) rs6000_software_single_step (sig, bp_p)
-/* Insert the specified number of args and function address into a
- call sequence of the above form stored at DUMMYNAME. */
+/* Notice when a new child process is started. */
-#define FIX_CALL_DUMMY(dummyname, pc, fun, nargs, args, type, gcc_p) \
- rs6000_fix_call_dummy (dummyname, pc, fun, nargs, args, type, gcc_p)
-extern void rs6000_fix_call_dummy PARAMS ((char *, CORE_ADDR, CORE_ADDR,
- int, struct value **,
- struct type *, int));
+#define TARGET_CREATE_INFERIOR_HOOK rs6000_create_inferior
+extern void rs6000_create_inferior (int);
/* 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));
-/* 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
- of the function. On the RS/6000 however, a function pointer is
- represented by a pointer to a TOC entry. This TOC entry contains
- three words, the first word is the address of the function, the
- second word is the TOC pointer (r2), and the third word is the
- static chain value. Throughout GDB it is currently assumed that a
- function pointer contains the address of the function, which is not
- easy to fix. In addition, the conversion of a function address to
- a function pointer would require allocation of a TOC entry in the
- inferior's memory space, with all its drawbacks. To be able to
- call C++ virtual methods in the inferior (which are called via
- function pointers), find_function_addr uses this macro to get the
- function address from a function pointer. */
+extern CORE_ADDR (*rs6000_find_toc_address_hook) (CORE_ADDR);
-#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));
+/* Hook in rs6000-tdep.c to set the current architecture when starting a
+ child process. */
-/* Flag for machine-specific stuff in shared files. FIXME */
-#define IBM6000_TARGET
+extern void (*rs6000_set_host_arch_hook) (int);
-/* 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));
-#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
- information for float parameters, both prototyped and unprototyped, then
- define this macro. This forces gdb to always assume that floats are
- passed as doubles and then converted in the callee.
-
- For the PowerPC, it appears that the debug info marks the parameters as
- floats regardless of whether the function is prototyped, but the actual
- values are always passed in as doubles. Thus by setting this to 1, both
- types of calls will work. */
-
-#define COERCE_FLOAT_TO_DOUBLE 1
+/* We need solib.h for building cross debuggers. However, we don't want
+ to clobber any special solib support required by native debuggers, so
+ only include solib.h if SOLIB_ADD is not defined. */
+#ifndef SOLIB_ADD
+#include "solib.h"
+#endif
projects / deliverable / binutils-gdb.git / blobdiff