/* Parameters for execution on any Hewlett-Packard PA-RISC machine.
- Copyright 1986, 1987, 1989, 1990, 1991, 1992, 1993, 1995
- Free Software Foundation, Inc.
+
+ Copyright 1986, 1987, 1989, 1990, 1991, 1992, 1993, 1994, 1995, 1996, 1998,
+ 1999, 2000, 2001, 2002, 2003, 2004, 2007 Free Software Foundation, Inc.
Contributed by the Center for Software Science at the
University of Utah (pa-gdb-bugs@cs.utah.edu).
-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 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. */
-
-/* Forward declarations of some types we use in prototypes */
-
-#ifdef __STDC__
-struct frame_info;
-struct frame_saved_regs;
-struct value;
-struct type;
-struct inferior_status;
-#endif
-
-/* Target system byte order. */
-
-#define TARGET_BYTE_ORDER BIG_ENDIAN
-
-/* By default assume we don't have to worry about software floating point. */
-#ifndef SOFT_FLOAT
-#define SOFT_FLOAT 0
-#endif
-
-/* Get at various relevent fields of an instruction word. */
-
-#define MASK_5 0x1f
-#define MASK_11 0x7ff
-#define MASK_14 0x3fff
-#define MASK_21 0x1fffff
-
-/* This macro gets bit fields using HP's numbering (MSB = 0) */
-#ifndef GET_FIELD
-#define GET_FIELD(X, FROM, TO) \
- ((X) >> (31 - (TO)) & ((1 << ((TO) - (FROM) + 1)) - 1))
-#endif
-
-/* Watch out for NaNs */
-
-#define IEEE_FLOAT
-
-/* On the PA, any pass-by-value structure > 8 bytes is actually
- passed via a pointer regardless of its type or the compiler
- used. */
-
-#define REG_STRUCT_HAS_ADDR(gcc_p,type) \
- (TYPE_LENGTH (type) > 8)
-
-/* 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. */
-
-extern CORE_ADDR hppa_skip_prologue PARAMS ((CORE_ADDR));
-#define SKIP_PROLOGUE(pc) (hppa_skip_prologue (pc))
-
-/* 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, NULL)
-extern CORE_ADDR skip_trampoline_code PARAMS ((CORE_ADDR, char *));
-
-/* Return non-zero if we are in an appropriate trampoline. */
-
-#define IN_SOLIB_CALL_TRAMPOLINE(pc, name) \
- in_solib_call_trampoline (pc, name)
-extern int in_solib_call_trampoline PARAMS ((CORE_ADDR, char *));
-
-#define IN_SOLIB_RETURN_TRAMPOLINE(pc, name) \
- in_solib_return_trampoline (pc, name)
-extern int in_solib_return_trampoline PARAMS ((CORE_ADDR, char *));
-
-/* 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. */
-
-#undef SAVED_PC_AFTER_CALL
-#define SAVED_PC_AFTER_CALL(frame) saved_pc_after_call (frame)
-extern CORE_ADDR saved_pc_after_call PARAMS ((struct frame_info *));
-
-/* Stack grows upward */
-#define INNER_THAN(lhs,rhs) ((lhs) > (rhs))
-
-/* elz: adjust the quantity to the next highest value which is 64-bit aligned.
- This is used in valops.c, when the sp is adjusted.
- On hppa the sp must always be kept 64-bit aligned*/
-
-#define STACK_ALIGN(arg) ( ((arg)%8) ? (((arg)+7)&-8) : (arg))
-#define NO_EXTRA_ALIGNMENT_NEEDED 1
-
-/* Sequence of bytes for breakpoint instruction. */
-
-#define BREAKPOINT {0x00, 0x01, 0x00, 0x04}
-#define BREAKPOINT32 0x10004
-
-/* Amount PC must be decremented by after a breakpoint.
- This is often the number of bytes in BREAKPOINT
- but not always.
-
- Not on the PA-RISC */
-
-#define DECR_PC_AFTER_BREAK 0
-
-/* Sometimes we may pluck out a minimal symbol that has a negative
- address.
-
- An example of this occurs when an a.out is linked against a foo.sl.
- The foo.sl defines a global bar(), and the a.out declares a signature
- for bar(). However, the a.out doesn't directly call bar(), but passes
- its address in another call.
-
- If you have this scenario and attempt to "break bar" before running,
- gdb will find a minimal symbol for bar() in the a.out. But that
- symbol's address will be negative. What this appears to denote is
- an index backwards from the base of the procedure linkage table (PLT)
- into the data linkage table (DLT), the end of which is contiguous
- with the start of the PLT. This is clearly not a valid address for
- us to set a breakpoint on.
-
- Note that one must be careful in how one checks for a negative address.
- 0xc0000000 is a legitimate address of something in a shared text
- segment, for example. Since I don't know what the possible range
- is of these "really, truly negative" addresses that come from the
- minimal symbols, I'm resorting to the gross hack of checking the
- top byte of the address for all 1's. Sigh.
- */
-#define PC_REQUIRES_RUN_BEFORE_USE(pc) \
- (! target_has_stack && (pc & 0xFF000000))
-
-/* return instruction is bv r0(rp) or bv,n r0(rp)*/
-
-#define ABOUT_TO_RETURN(pc) ((read_memory_integer (pc, 4) | 0x2) == 0xE840C002)
-
-/* 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 128
-
-/* Initializer for an array of names of registers.
- There should be NUM_REGS strings in this initializer.
- They are in rows of eight entries */
-
-#define REGISTER_NAMES \
- {"flags", "r1", "rp", "r3", "r4", "r5", "r6", "r7", \
- "r8", "r9", "r10", "r11", "r12", "r13", "r14", "r15", \
- "r16", "r17", "r18", "r19", "r20", "r21", "r22", "r23", \
- "r24", "r25", "r26", "dp", "ret0", "ret1", "sp", "r31", \
- "sar", "pcoqh", "pcsqh", "pcoqt", "pcsqt", "eiem", "iir", "isr", \
- "ior", "ipsw", "goto", "sr4", "sr0", "sr1", "sr2", "sr3", \
- "sr5", "sr6", "sr7", "cr0", "cr8", "cr9", "ccr", "cr12", \
- "cr13", "cr24", "cr25", "cr26", "mpsfu_high","mpsfu_low","mpsfu_ovflo","pad",\
- "fpsr", "fpe1", "fpe2", "fpe3", "fpe4", "fpe5", "fpe6", "fpe7", \
- "fr4", "fr4R", "fr5", "fr5R", "fr6", "fr6R", "fr7", "fr7R", \
- "fr8", "fr8R", "fr9", "fr9R", "fr10", "fr10R", "fr11", "fr11R", \
- "fr12", "fr12R", "fr13", "fr13R", "fr14", "fr14R", "fr15", "fr15R", \
- "fr16", "fr16R", "fr17", "fr17R", "fr18", "fr18R", "fr19", "fr19R", \
- "fr20", "fr20R", "fr21", "fr21R", "fr22", "fr22R", "fr23", "fr23R", \
- "fr24", "fr24R", "fr25", "fr25R", "fr26", "fr26R", "fr27", "fr27R", \
- "fr28", "fr28R", "fr29", "fr29R", "fr30", "fr30R", "fr31", "fr31R"}
-
-/* Register numbers of various important registers.
- Note that some of these values are "real" register numbers,
- and correspond to the general registers of the machine,
- and some are "phony" register numbers which are too large
- 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 R0_REGNUM 0 /* Doesn't actually exist, used as base for
- other r registers. */
-#define FLAGS_REGNUM 0 /* Various status flags */
-#define RP_REGNUM 2 /* return pointer */
-#define FP_REGNUM 3 /* Contains address of executing stack */
- /* frame */
-#define SP_REGNUM 30 /* Contains address of top of stack */
-#define SAR_REGNUM 32 /* Shift Amount Register */
-#define IPSW_REGNUM 41 /* Interrupt Processor Status Word */
-#define PCOQ_HEAD_REGNUM 33 /* instruction offset queue head */
-#define PCSQ_HEAD_REGNUM 34 /* instruction space queue head */
-#define PCOQ_TAIL_REGNUM 35 /* instruction offset queue tail */
-#define PCSQ_TAIL_REGNUM 36 /* instruction space queue tail */
-#define EIEM_REGNUM 37 /* External Interrupt Enable Mask */
-#define IIR_REGNUM 38 /* Interrupt Instruction Register */
-#define IOR_REGNUM 40 /* Interrupt Offset Register */
-#define SR4_REGNUM 43 /* space register 4 */
-#define RCR_REGNUM 51 /* Recover Counter (also known as cr0) */
-#define CCR_REGNUM 54 /* Coprocessor Configuration Register */
-#define TR0_REGNUM 57 /* Temporary Registers (cr24 -> cr31) */
-#define CR27_REGNUM 60 /* Base register for thread-local storage, cr27 */
-#define FP0_REGNUM 64 /* floating point reg. 0 (fspr)*/
-#define FP4_REGNUM 72
-
-#define ARG0_REGNUM 26 /* The first argument of a callee. */
-#define ARG1_REGNUM 25 /* The second argument of a callee. */
-#define ARG2_REGNUM 24 /* The third argument of a callee. */
-#define ARG3_REGNUM 23 /* The fourth argument of a callee. */
-
-/* compatibility with the rest of gdb. */
-#define PC_REGNUM PCOQ_HEAD_REGNUM
-#define NPC_REGNUM PCOQ_TAIL_REGNUM
-
-/*
- * Processor Status Word Masks
- */
-
-#define PSW_T 0x01000000 /* Taken Branch Trap Enable */
-#define PSW_H 0x00800000 /* Higher-Privilege Transfer Trap Enable */
-#define PSW_L 0x00400000 /* Lower-Privilege Transfer Trap Enable */
-#define PSW_N 0x00200000 /* PC Queue Front Instruction Nullified */
-#define PSW_X 0x00100000 /* Data Memory Break Disable */
-#define PSW_B 0x00080000 /* Taken Branch in Previous Cycle */
-#define PSW_C 0x00040000 /* Code Address Translation Enable */
-#define PSW_V 0x00020000 /* Divide Step Correction */
-#define PSW_M 0x00010000 /* High-Priority Machine Check Disable */
-#define PSW_CB 0x0000ff00 /* Carry/Borrow Bits */
-#define PSW_R 0x00000010 /* Recovery Counter Enable */
-#define PSW_Q 0x00000008 /* Interruption State Collection Enable */
-#define PSW_P 0x00000004 /* Protection ID Validation Enable */
-#define PSW_D 0x00000002 /* Data Address Translation Enable */
-#define PSW_I 0x00000001 /* External, Power Failure, Low-Priority */
- /* Machine Check Interruption Enable */
-
-/* When fetching register values from an inferior or a core file,
- clean them up using this macro. BUF is a char pointer to
- the raw value of the register in the registers[] array. */
-
-#define CLEAN_UP_REGISTER_VALUE(regno, buf) \
- do { \
- if ((regno) == PCOQ_HEAD_REGNUM || (regno) == PCOQ_TAIL_REGNUM) \
- (buf)[3] &= ~0x3; \
- } while (0)
-
-/* Define DO_REGISTERS_INFO() to do machine-specific formatting
- of register dumps. */
-
-#define DO_REGISTERS_INFO(_regnum, fp) pa_do_registers_info (_regnum, fp)
-extern void pa_do_registers_info PARAMS ((int, int));
-
-#if 0
-#define STRCAT_REGISTER(regnum, fpregs, stream, precision) pa_do_strcat_registers_info (regnum, fpregs, stream, precision)
-extern void pa_do_strcat_registers_info PARAMS ((int, int, GDB_FILE *, enum precision_type));
-#endif
-
-/* PA specific macro to see if the current instruction is nullified. */
-#ifndef INSTRUCTION_NULLIFIED
-#define INSTRUCTION_NULLIFIED \
- (((int)read_register (IPSW_REGNUM) & 0x00200000) && \
- !((int)read_register (FLAGS_REGNUM) & 0x2))
-#endif
-
-/* Number of bytes of storage in the actual machine representation
- for register N. On the PA-RISC, all regs are 4 bytes, including
- the FP registers (they're accessed as two 4 byte halves). */
-
-#define REGISTER_RAW_SIZE(N) 4
-
-/* Total amount of space needed to store our copies of the machine's
- register state, the array `registers'. */
-#define REGISTER_BYTES (NUM_REGS * 4)
-
-/* Index within `registers' of the first byte of the space for
- register N. */
-
-#define REGISTER_BYTE(N) (N) * 4
-
-/* Number of bytes of storage in the program's representation
- for register N. */
-
-#define REGISTER_VIRTUAL_SIZE(N) REGISTER_RAW_SIZE(N)
-
-/* Largest value REGISTER_RAW_SIZE can have. */
-
-#define MAX_REGISTER_RAW_SIZE 4
-
-/* Largest value REGISTER_VIRTUAL_SIZE can have. */
-
-#define MAX_REGISTER_VIRTUAL_SIZE 8
-
-/* Return the GDB type object for the "standard" data type
- of data in register N. */
-
-#define REGISTER_VIRTUAL_TYPE(N) \
- ((N) < FP4_REGNUM ? builtin_type_int : builtin_type_float)
-
-/* Store the address of the place in which to copy the structure the
- subroutine will return. This is called from call_function. */
-
-#define STORE_STRUCT_RETURN(ADDR, SP) {write_register (28, (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.
-
- elz: changed what to return when length is > 4: the stored result is
- in register 28 and in register 29, with the lower order word being in reg 29,
- so we must start reading it from somehere in the middle of reg28
-
- FIXME: Not sure what to do for soft float here. */
-
-#define EXTRACT_RETURN_VALUE(TYPE,REGBUF,VALBUF) \
- { \
- if (TYPE_CODE (TYPE) == TYPE_CODE_FLT && !SOFT_FLOAT) \
- memcpy ((VALBUF), \
- ((char *)(REGBUF)) + REGISTER_BYTE (FP4_REGNUM), \
- TYPE_LENGTH (TYPE)); \
- else \
- memcpy ((VALBUF), \
- (char *)(REGBUF) + REGISTER_BYTE (28) + \
- (TYPE_LENGTH (TYPE) > 4 ? (8 - TYPE_LENGTH (TYPE)) : (4 - TYPE_LENGTH (TYPE))), \
- TYPE_LENGTH (TYPE)); \
- }
-
-
- /* elz: decide whether the function returning a value of type type
- will put it on the stack or in the registers.
- The pa calling convention says that:
- register 28 (called ret0 by gdb) contains any ASCII char,
- and any non_floating point value up to 32-bits.
- reg 28 and 29 contain non-floating point up tp 64 bits and larger
- than 32 bits. (higer order word in reg 28).
- fr4: floating point up to 64 bits
- sr1: space identifier (32-bit)
- stack: any lager than 64-bit, with the address in r28
- */
-extern use_struct_convention_fn hppa_use_struct_convention;
-#define USE_STRUCT_CONVENTION(gcc_p,type) hppa_use_struct_convention (gcc_p,type)
-
-/* Write into appropriate registers a function return value
- of type TYPE, given in virtual format.
-
- For software floating point the return value goes into the integer
- registers. But we don't have any flag to key this on, so we always
- store the value into the integer registers, and if it's a float value,
- then we put it in the float registers too. */
-
-#define STORE_RETURN_VALUE(TYPE,VALBUF) \
- write_register_bytes (REGISTER_BYTE (28),(VALBUF), TYPE_LENGTH (TYPE)) ; \
- if (!SOFT_FLOAT) \
- write_register_bytes ((TYPE_CODE(TYPE) == TYPE_CODE_FLT \
- ? REGISTER_BYTE (FP4_REGNUM) \
- : REGISTER_BYTE (28)), \
- (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) \
- (*(int *)((REGBUF) + REGISTER_BYTE (28)))
-
-/* elz: Return a large value, which is stored on the stack at addr.
- This is defined only for the hppa, at this moment.
- The above macro EXTRACT_STRUCT_VALUE_ADDRESS is not called anymore,
- because it assumes that on exit from a called function which returns
- a large structure on the stack, the address of the ret structure is
- still in register 28. Unfortunately this register is usually overwritten
- by the called function itself, on hppa. This is specified in the calling
- convention doc. As far as I know, the only way to get the return value
- is to have the caller tell us where it told the callee to put it, rather
- than have the callee tell us.
-*/
-#define VALUE_RETURNED_FROM_STACK(valtype,addr) \
- hppa_value_returned_from_stack (valtype, addr)
-
-/*
- * This macro defines the register numbers (from REGISTER_NAMES) that
- * are effectively unavailable to the user through ptrace(). It allows
- * us to include the whole register set in REGISTER_NAMES (inorder to
- * better support remote debugging). If it is used in
- * fetch/store_inferior_registers() gdb will not complain about I/O errors
- * on fetching these registers. If all registers in REGISTER_NAMES
- * are available, then return false (0).
- */
-
-#define CANNOT_STORE_REGISTER(regno) \
- ((regno) == 0) || \
- ((regno) == PCSQ_HEAD_REGNUM) || \
- ((regno) >= PCSQ_TAIL_REGNUM && (regno) < IPSW_REGNUM) || \
- ((regno) > IPSW_REGNUM && (regno) < FP4_REGNUM)
-
-#define INIT_EXTRA_FRAME_INFO(fromleaf, frame) init_extra_frame_info (fromleaf, frame)
-extern void init_extra_frame_info PARAMS ((int, struct frame_info *));
-
-/* 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.
-
- FRAME_CHAIN_COMBINE takes the chain pointer and the frame's nominal address
- and produces the nominal address of the caller frame.
-
- However, if FRAME_CHAIN_VALID returns zero,
- it means the given frame is the outermost one and has no caller.
- In that case, FRAME_CHAIN_COMBINE is not used. */
-
-/* In the case of the PA-RISC, the frame's nominal address
- is the address of a 4-byte word containing the calling frame's
- address (previous FP). */
-
-#define FRAME_CHAIN(thisframe) frame_chain (thisframe)
-extern CORE_ADDR frame_chain PARAMS ((struct frame_info *));
-
-extern int hppa_frame_chain_valid PARAMS ((CORE_ADDR, struct frame_info *));
-#define FRAME_CHAIN_VALID(chain, thisframe) hppa_frame_chain_valid (chain, thisframe)
-
-#define FRAME_CHAIN_COMBINE(chain, thisframe) (chain)
-
-/* 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 *));
-
-extern CORE_ADDR hppa_frame_saved_pc PARAMS ((struct frame_info *frame));
-#define FRAME_SAVED_PC(FRAME) hppa_frame_saved_pc (FRAME)
-
-#define FRAME_ARGS_ADDRESS(fi) ((fi)->frame)
-
-#define FRAME_LOCALS_ADDRESS(fi) ((fi)->frame)
-/* 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 0
-
-#define FRAME_FIND_SAVED_REGS(frame_info, frame_saved_regs) \
- hppa_frame_find_saved_regs (frame_info, &frame_saved_regs)
-extern void
-hppa_frame_find_saved_regs PARAMS ((struct frame_info *,
- struct frame_saved_regs *));
-
-\f
-/* Things needed for making the inferior call functions. */
-
-/* Push an empty stack frame, to record the current PC, etc. */
-
-#define PUSH_DUMMY_FRAME push_dummy_frame (inf_status)
-extern void push_dummy_frame PARAMS ((struct inferior_status *));
-
-/* Discard from the stack the innermost frame,
- restoring all saved registers. */
-#define POP_FRAME hppa_pop_frame ()
-extern void hppa_pop_frame PARAMS ((void));
-
-#define INSTRUCTION_SIZE 4
-
-#ifndef PA_LEVEL_0
-
-/* Non-level zero PA's have space registers (but they don't always have
- floating-point, do they???? */
-
-/* This sequence of words is the instructions
-
-; Call stack frame has already been built by gdb. Since we could be calling
-; a varargs function, and we do not have the benefit of a stub to put things in
-; the right place, we load the first 4 word of arguments into both the general
-; and fp registers.
-call_dummy
- ldw -36(sp), arg0
- ldw -40(sp), arg1
- ldw -44(sp), arg2
- ldw -48(sp), arg3
- ldo -36(sp), r1
- fldws 0(0, r1), fr4
- fldds -4(0, r1), fr5
- fldws -8(0, r1), fr6
- fldds -12(0, r1), fr7
- ldil 0, r22 ; FUNC_LDIL_OFFSET must point here
- ldo 0(r22), r22 ; FUNC_LDO_OFFSET must point here
- ldsid (0,r22), r4
- ldil 0, r1 ; SR4EXPORT_LDIL_OFFSET must point here
- ldo 0(r1), r1 ; SR4EXPORT_LDO_OFFSET must point here
- ldsid (0,r1), r20
- combt,=,n r4, r20, text_space ; If target is in data space, do a
- ble 0(sr5, r22) ; "normal" procedure call
- copy r31, r2
- break 4, 8
- mtsp r21, sr0
- ble,n 0(sr0, r22)
-text_space ; Otherwise, go through _sr4export,
- ble (sr4, r1) ; which will return back here.
- stw r31,-24(r30)
- break 4, 8
- mtsp r21, sr0
- ble,n 0(sr0, r22)
- nop ; To avoid kernel bugs
- nop ; and keep the dummy 8 byte aligned
-
- The dummy decides if the target is in text space or data space. If
- it's in data space, there's no problem because the target can
- return back to the dummy. However, if the target is in text space,
- the dummy calls the secret, undocumented routine _sr4export, which
- calls a function in text space and can return to any space. Instead
- of including fake instructions to represent saved registers, we
- know that the frame is associated with the call dummy and treat it
- specially.
-
- The trailing NOPs are needed to avoid a bug in HPUX, BSD and OSF1
- kernels. If the memory at the location pointed to by the PC is
- 0xffffffff then a ptrace step call will fail (even if the instruction
- is nullified).
-
- The code to pop a dummy frame single steps three instructions
- starting with the last mtsp. This includes the nullified "instruction"
- following the ble (which is uninitialized junk). If the
- "instruction" following the last BLE is 0xffffffff, then the ptrace
- will fail and the dummy frame is not correctly popped.
-
- By placing a NOP in the delay slot of the BLE instruction we can be
- sure that we never try to execute a 0xffffffff instruction and
- avoid the kernel bug. The second NOP is needed to keep the call
- dummy 8 byte aligned. */
-
-/* Define offsets into the call dummy for the target function address */
-#define FUNC_LDIL_OFFSET (INSTRUCTION_SIZE * 9)
-#define FUNC_LDO_OFFSET (INSTRUCTION_SIZE * 10)
-
-/* Define offsets into the call dummy for the _sr4export address */
-#define SR4EXPORT_LDIL_OFFSET (INSTRUCTION_SIZE * 12)
-#define SR4EXPORT_LDO_OFFSET (INSTRUCTION_SIZE * 13)
-
-#define CALL_DUMMY {0x4BDA3FB9, 0x4BD93FB1, 0x4BD83FA9, 0x4BD73FA1,\
- 0x37C13FB9, 0x24201004, 0x2C391005, 0x24311006,\
- 0x2C291007, 0x22C00000, 0x36D60000, 0x02C010A4,\
- 0x20200000, 0x34210000, 0x002010b4, 0x82842022,\
- 0xe6c06000, 0x081f0242, 0x00010004, 0x00151820,\
- 0xe6c00002, 0xe4202000, 0x6bdf3fd1, 0x00010004,\
- 0x00151820, 0xe6c00002, 0x08000240, 0x08000240}
-
-#define CALL_DUMMY_LENGTH (INSTRUCTION_SIZE * 28)
-
-#else /* defined PA_LEVEL_0 */
-
-/* This is the call dummy for a level 0 PA. Level 0's don't have space
- registers (or floating point??), so we skip all that inter-space call stuff,
- and avoid touching the fp regs.
-
-call_dummy
-
- ldw -36(%sp), %arg0
- ldw -40(%sp), %arg1
- ldw -44(%sp), %arg2
- ldw -48(%sp), %arg3
- ldil 0, %r31 ; FUNC_LDIL_OFFSET must point here
- ldo 0(%r31), %r31 ; FUNC_LDO_OFFSET must point here
- ble 0(%sr0, %r31)
- copy %r31, %r2
- break 4, 8
- nop ; restore_pc_queue expects these
- bv,n 0(%r22) ; instructions to be here...
- nop
-*/
-
-/* Define offsets into the call dummy for the target function address */
-#define FUNC_LDIL_OFFSET (INSTRUCTION_SIZE * 4)
-#define FUNC_LDO_OFFSET (INSTRUCTION_SIZE * 5)
-
-#define CALL_DUMMY {0x4bda3fb9, 0x4bd93fb1, 0x4bd83fa9, 0x4bd73fa1,\
- 0x23e00000, 0x37ff0000, 0xe7e00000, 0x081f0242,\
- 0x00010004, 0x08000240, 0xeac0c002, 0x08000240}
-
-#define CALL_DUMMY_LENGTH (INSTRUCTION_SIZE * 12)
-
-#endif
-
-#define CALL_DUMMY_START_OFFSET 0
-
-/* If we've reached a trap instruction within the call dummy, then
- we'll consider that to mean that we've reached the call dummy's
- end after its successful completion. */
-#define CALL_DUMMY_HAS_COMPLETED(pc, sp, frame_address) \
- (PC_IN_CALL_DUMMY((pc), (sp), (frame_address)) && \
- (read_memory_integer((pc), 4) == BREAKPOINT32))
-
-/*
- * Insert the specified number of args and function address
- * into a call sequence of the above form stored at DUMMYNAME.
- *
- * On the hppa we need to call the stack dummy through $$dyncall.
- * Therefore our version of FIX_CALL_DUMMY takes an extra argument,
- * real_pc, which is the location where gdb should start up the
- * inferior to do the function call.
- */
-
-#define FIX_CALL_DUMMY hppa_fix_call_dummy
-
-extern CORE_ADDR
-hppa_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 = hppa_push_arguments((nargs), (args), (sp), (struct_return), (struct_addr))
-extern CORE_ADDR
-hppa_push_arguments PARAMS ((int, struct value **, CORE_ADDR, int,
- CORE_ADDR));
-\f
-/* The low two bits of the PC on the PA contain the privilege level. Some
- genius implementing a (non-GCC) compiler apparently decided this means
- that "addresses" in a text section therefore include a privilege level,
- and thus symbol tables should contain these bits. This seems like a
- bonehead thing to do--anyway, it seems to work for our purposes to just
- ignore those bits. */
-#define SMASH_TEXT_ADDRESS(addr) ((addr) &= ~0x3)
-
-#define GDB_TARGET_IS_HPPA
-
-#define BELIEVE_PCC_PROMOTION 1
-
-/*
- * Unwind table and descriptor.
- */
-
-struct unwind_table_entry {
- unsigned int region_start;
- unsigned int region_end;
-
- unsigned int Cannot_unwind : 1; /* 0 */
- unsigned int Millicode : 1; /* 1 */
- unsigned int Millicode_save_sr0 : 1; /* 2 */
- unsigned int Region_description : 2; /* 3..4 */
- unsigned int reserved1 : 1; /* 5 */
- unsigned int Entry_SR : 1; /* 6 */
- unsigned int Entry_FR : 4; /* number saved */ /* 7..10 */
- unsigned int Entry_GR : 5; /* number saved */ /* 11..15 */
- unsigned int Args_stored : 1; /* 16 */
- unsigned int Variable_Frame : 1; /* 17 */
- unsigned int Separate_Package_Body : 1; /* 18 */
- unsigned int Frame_Extension_Millicode:1; /* 19 */
- unsigned int Stack_Overflow_Check : 1; /* 20 */
- unsigned int Two_Instruction_SP_Increment:1; /* 21 */
- unsigned int Ada_Region : 1; /* 22 */
- unsigned int cxx_info : 1; /* 23 */
- unsigned int cxx_try_catch : 1; /* 24 */
- unsigned int sched_entry_seq : 1; /* 25 */
- unsigned int reserved2 : 1; /* 26 */
- unsigned int Save_SP : 1; /* 27 */
- unsigned int Save_RP : 1; /* 28 */
- unsigned int Save_MRP_in_frame : 1; /* 29 */
- unsigned int extn_ptr_defined : 1; /* 30 */
- unsigned int Cleanup_defined : 1; /* 31 */
-
- unsigned int MPE_XL_interrupt_marker: 1; /* 0 */
- unsigned int HP_UX_interrupt_marker: 1; /* 1 */
- unsigned int Large_frame : 1; /* 2 */
- unsigned int Pseudo_SP_Set : 1; /* 3 */
- unsigned int reserved4 : 1; /* 4 */
- unsigned int Total_frame_size : 27; /* 5..31 */
-
- /* This is *NOT* part of an actual unwind_descriptor in an object
- file. It is *ONLY* part of the "internalized" descriptors that
- we create from those in a file.
- */
- struct {
- unsigned int stub_type : 4; /* 0..3 */
- unsigned int padding : 28; /* 4..31 */
- } stub_unwind;
-};
-
-/* HP linkers also generate unwinds for various linker-generated stubs.
- GDB reads in the stubs from the $UNWIND_END$ subspace, then
- "converts" them into normal unwind entries using some of the reserved
- fields to store the stub type. */
-
-struct stub_unwind_entry
-{
- /* The offset within the executable for the associated stub. */
- unsigned stub_offset;
-
- /* The type of stub this unwind entry describes. */
- char type;
-
- /* Unknown. Not needed by GDB at this time. */
- char prs_info;
-
- /* Length (in instructions) of the associated stub. */
- short stub_length;
-};
-
-/* Sizes (in bytes) of the native unwind entries. */
-#define UNWIND_ENTRY_SIZE 16
-#define STUB_UNWIND_ENTRY_SIZE 8
-
-/* The gaps represent linker stubs used in MPE and space for future
- expansion. */
-enum unwind_stub_types
-{
- LONG_BRANCH = 1,
- PARAMETER_RELOCATION = 2,
- EXPORT = 10,
- IMPORT = 11,
-};
-
-/* We use the objfile->obj_private pointer for two things:
- *
- * 1. An unwind table;
- *
- * 2. A pointer to any associated shared library object.
- *
- * #defines are used to help refer to these objects.
- */
-
-/* Info about the unwind table associated with an object file.
- *
- * This is hung off of the "objfile->obj_private" pointer, and
- * is allocated in the objfile's psymbol obstack. This allows
- * us to have unique unwind info for each executable and shared
- * library that we are debugging.
- */
-struct obj_unwind_info {
- struct unwind_table_entry *table; /* Pointer to unwind info */
- struct unwind_table_entry *cache; /* Pointer to last entry we found */
- int last; /* Index of last entry */
-};
-
-typedef struct obj_private_struct {
- struct obj_unwind_info *unwind_info; /* a pointer */
- struct so_list *so_info; /* a pointer */
-} obj_private_data_t;
-
-#if 0
-extern void target_write_pc PARAMS ((CORE_ADDR, int))
-extern CORE_ADDR target_read_pc PARAMS ((int));
-extern CORE_ADDR skip_trampoline_code PARAMS ((CORE_ADDR, char *));
-#endif
-
-#define TARGET_READ_PC(pid) target_read_pc (pid)
-extern CORE_ADDR target_read_pc PARAMS ((int));
-
-#define TARGET_WRITE_PC(v,pid) target_write_pc (v,pid)
-extern void target_write_pc PARAMS ((CORE_ADDR, int));
-
-#define TARGET_READ_FP() target_read_fp (inferior_pid)
-extern CORE_ADDR target_read_fp PARAMS ((int));
+ This file is part of GDB.
-/* For a number of horrible reasons we may have to adjust the location
- of variables on the stack. Ugh. */
-#define HPREAD_ADJUST_STACK_ADDRESS(ADDR) hpread_adjust_stack_address(ADDR)
+ 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.
-extern int hpread_adjust_stack_address PARAMS ((CORE_ADDR));
+ 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.
-/* 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.
+ 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. */
- For the pa, it appears that the debug info marks the parameters as
- floats regardless of whether the function is prototyped, but the actual
- values are passed as doubles for the non-prototyped case and floats for
- the prototyped case. Thus we choose to make the non-prototyped case work
- for C and break the prototyped case, since the non-prototyped case is
- probably much more common. (FIXME). */
+#include "regcache.h"
-#define COERCE_FLOAT_TO_DOUBLE (current_language -> la_language == language_c)
+extern int hppa_pc_requires_run_before_use (CORE_ADDR pc);
+#define DEPRECATED_PC_REQUIRES_RUN_BEFORE_USE(pc) hppa_pc_requires_run_before_use (pc)
projects / thirdparty / binutils-gdb.git / blobdiff