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- /* Target machine sub-parameters for SPARC64, for GDB, the GNU debugger.
- This is included by other tm-*.h files to define SPARC cpu-related info.
- Copyright 1986, 1987, 1989, 1991, 1992, 1993 Free Software Foundation, Inc.
- This is (obviously) based on the SPARC Vn (n<9) port.
- Contributed by Doug Evans (dje@cygnus.com).
-
- 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., 675 Mass Ave, Cambridge, MA 02139, USA. */
-
- #include "sparc/tm-sparc.h"
-
- /* We have long longs. */
- #define LONG_LONG
-
- /* When passing a structure to a function, Sun cc passes the address
- in a register, not the structure itself. It (under SunOS4) creates
- two symbols, so we get a LOC_ARG saying the address is on the stack
- (a lie, and a serious one since we don't know which register to
- use), and a LOC_REGISTER saying that the struct is in a register
- (sort of a lie, but fixable with REG_STRUCT_HAS_ADDR). Gcc version
- two (as of 1.92) behaves like sun cc. REG_STRUCT_HAS_ADDR is smart
- enough to distinguish between Sun cc, gcc version 1 and gcc version 2.
-
- This still doesn't work if the argument is not one passed in a
- register (i.e. it's the 7th or later argument). */
-
- #undef REG_STRUCT_HAS_ADDR
- #define REG_STRUCT_HAS_ADDR(gcc_p) (gcc_p != 1)
- #undef STRUCT_ARG_SYM_GARBAGE
- #define STRUCT_ARG_SYM_GARBAGE(gcc_p) (gcc_p != 1)
-
- /* Stack has strict alignment. */
-
- #undef STACK_ALIGN
- #define STACK_ALIGN(ADDR) (((ADDR)+15)&-16)
-
- /* Nonzero if instruction at PC is a return instruction. */
- /* For SPARC, this is either a "jmpl %o7+8,%g0" or "jmpl %i7+8,%g0".
-
- Note: this does not work for functions returning structures under SunOS.
- This should work for v9, however. */
- #undef ABOUT_TO_RETURN
- #define ABOUT_TO_RETURN(pc) \
- ((read_memory_integer (pc, 4)|0x00040000) == 0x81c7e008)
-
- /* Say how long (ordinary) registers are. */
-
- #undef REGISTER_TYPE
- #define REGISTER_TYPE long long
-
- /* Number of machine registers */
-
- #undef NUM_REGS
- #define NUM_REGS 127
-
- /* Initializer for an array of names of registers.
- There should be NUM_REGS strings in this initializer. */
- /* Some of these registers are only accessible from priviledged mode.
- They are here for kernel debuggers, etc. */
- /* FIXME: icc and xcc are currently considered separate registers.
- This may have to change and consider them as just one (ccr).
- Let's postpone this as long as we can. */
- /* FIXME: fcc0-3 are currently separate, even though they are also part of
- fsr. May have to remove them but let's postpone this as long as
- possible. */
- /* FIXME: cle and tle are new registers that haven't entered the docs yet.
- They stand for "current little endian format" and "trap little endian
- format". */
-
- #undef REGISTER_NAMES
- #define REGISTER_NAMES \
- { "g0", "g1", "g2", "g3", "g4", "g5", "g6", "g7", \
- "o0", "o1", "o2", "o3", "o4", "o5", "sp", "o7", \
- "l0", "l1", "l2", "l3", "l4", "l5", "l6", "l7", \
- "i0", "i1", "i2", "i3", "i4", "i5", "fp", "i7", \
- \
- "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", \
- "f32", "f34", "f36", "f38", "f40", "f42", "f44", "f46", \
- "f48", "f50", "f52", "f54", "f56", "f58", "f60", "f62", \
- \
- "ccr", "y", "pc", "npc", "asi", "cle", "tle", \
- "fsr", "fprs", "ver", "tick", "pil", "pstate", "wstate", \
- "tba", "tl", "tt", "tpc", "tnpc", "tstate", \
- "cwp", "cansave", "canrestore", "cleanwin", "otherwin", \
- "asr16", "asr17", "asr18", "asr19", "asr20", "asr21", \
- "asr22", "asr23", "asr24", "asr25", "asr26", "asr27", \
- "asr28", "asr29", "asr30", "asr31", \
- /* These are here at the end to simplify removing them if we have to. */ \
- "icc", "xcc", "fcc0", "fcc1", "fcc2", "fcc3" \
- }
-
- /* 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. */
-
- #if 0 /* defined in tm-sparc.h, replicated for doc purposes */
- #define G0_REGNUM 0 /* %g0 */
- #define G1_REGNUM 1 /* %g1 */
- #define O0_REGNUM 8 /* %o0 */
- #define SP_REGNUM 14 /* Contains address of top of stack, \
- which is also the bottom of the frame. */
- #define RP_REGNUM 15 /* Contains return address value, *before* \
- any windows get switched. */
- #define O7_REGNUM 15 /* Last local reg not saved on stack frame */
- #define L0_REGNUM 16 /* First local reg that's saved on stack frame
- rather than in machine registers */
- #define I0_REGNUM 24 /* %i0 */
- #define FP_REGNUM 30 /* Contains address of executing stack frame */
- #define I7_REGNUM 31 /* Last local reg saved on stack frame */
- #define FP0_REGNUM 32 /* Floating point register 0 */
- #endif
-
- #define FP_MAX_REGNUM 80 /* 1 + last fp reg number */
-
- /* #undef v8 misc. regs */
-
- #undef Y_REGNUM
- #undef PS_REGNUM
- #undef WIM_REGNUM
- #undef TBR_REGNUM
- #undef PC_REGNUM
- #undef NPC_REGNUM
- #undef FPS_REGNUM
- #undef CPS_REGNUM
-
- /* v9 misc. and priv. regs */
-
- #define C0_REGNUM 80 /* Start of control registers */
- #define CCR_REGNUM (C0_REGNUM + 0) /* Condition Code Register (%xcc,%icc) */
- #define Y_REGNUM (C0_REGNUM + 1) /* Temp register for multiplication, etc. */
- #define PC_REGNUM (C0_REGNUM + 2) /* floating point condition code reg 2 */
- #define NPC_REGNUM (C0_REGNUM + 3) /* floating point condition code reg 2 */
- #define ASI_REGNUM (C0_REGNUM + 4) /* Alternate Space Identifier */
- #define CLE_REGNUM (C0_REGNUM + 5) /* Current Little Endian format */
- #define TLE_REGNUM (C0_REGNUM + 6) /* Trap Little Endian format */
- #define FSR_REGNUM (C0_REGNUM + 7) /* Floating Point State */
- #define FPRS_REGNUM (C0_REGNUM + 8) /* Floating Point Registers State */
- #define VER_REGNUM (C0_REGNUM + 9) /* Version register */
- #define TICK_REGNUM (C0_REGNUM + 10) /* Tick register */
- #define PIL_REGNUM (C0_REGNUM + 11) /* Processor Interrupt Level */
- #define PSTATE_REGNUM (C0_REGNUM + 12) /* Processor State */
- #define WSTATE_REGNUM (C0_REGNUM + 13) /* Window State */
- #define TBA_REGNUM (C0_REGNUM + 14) /* floating point condition code reg 3 */
- #define TL_REGNUM (C0_REGNUM + 15) /* Trap Level */
- #define TT_REGNUM (C0_REGNUM + 16) /* Trap Type */
- #define TPC_REGNUM (C0_REGNUM + 17) /* Trap pc */
- #define TNPC_REGNUM (C0_REGNUM + 18) /* Trap npc */
- #define TSTATE_REGNUM (C0_REGNUM + 19) /* Trap State */
- #define CWP_REGNUM (C0_REGNUM + 20) /* Current Window Pointer */
- #define CANSAVE_REGNUM (C0_REGNUM + 21) /* Savable Windows */
- #define CANRESTORE_REGNUM (C0_REGNUM + 22) /* Restorable Windows */
- #define CLEANWIN_REGNUM (C0_REGNUM + 23) /* Clean Windows */
- #define OTHERWIN_REGNUM (C0_REGNUM + 24) /* Other Windows */
- #define ASR_REGNUM(n) (C0_REGNUM+(25-16)+(n)) /* Ancillary State Register
- (n = 16...31) */
- #define ICC_REGNUM (C0_REGNUM + 41) /* 32 bit condition codes */
- #define XCC_REGNUM (C0_REGNUM + 42) /* 64 bit condition codes */
- #define FCC0_REGNUM (C0_REGNUM + 43) /* floatpoint condition code reg 0 */
- #define FCC1_REGNUM (C0_REGNUM + 44) /* floating point condition code reg 0 */
- #define FCC2_REGNUM (C0_REGNUM + 45) /* floating point condition code reg 1 */
- #define FCC3_REGNUM (C0_REGNUM + 46) /* floating point condition code reg 2 */
-
- /* FIXME: PS_REGNUM, FPS_REGNUM, CPS_REGNUM are for priviledged v8 registers
- which don't exist in v9 (in the same form). We use bits of sparc-tdep.c
- which requires these, so define them here to be unused ASR regs so
- sparc-tdep.c will compile. What we really want to do is put some
- conditionals in sparc-tdep.c (run time or compile time) or separate the v8
- stuff out of sparc-tdep.c. */
-
- #define PS_REGNUM (ASR_REGNUM (29))
- #define FPS_REGNUM (ASR_REGNUM (30))
- #define CPS_REGNUM (ASR_REGNUM (31))
-
- /* Total amount of space needed to store our copies of the machine's
- register state, the array `registers'.
- Some of the registers aren't 64 bits, but it's a lot simpler just to assume
- they all are (since most of them are). */
- #undef REGISTER_BYTES
- #define REGISTER_BYTES (32*8+32*8+47*8)
-
- /* Index within `registers' of the first byte of the space for
- register N. */
- #undef REGISTER_BYTE
- #define REGISTER_BYTE(N) \
- ((N) < 32 ? (N)*8 \
- : (N) < 64 ? 32*8 + ((N)-32)*4 \
- : (N) < C0_REGNUM ? 32*8 + 32*4 + ((N)-64)*8 \
- : 64*8 + ((N)-C0_REGNUM)*8)
-
- /* Number of bytes of storage in the actual machine representation
- for register N. */
-
- #undef REGISTER_RAW_SIZE
- #define REGISTER_RAW_SIZE(N) (8)
-
- /* Number of bytes of storage in the program's representation
- for register N. */
-
- #undef REGISTER_VIRTUAL_SIZE
- #define REGISTER_VIRTUAL_SIZE(N) (8)
-
- /* Largest value REGISTER_RAW_SIZE can have. */
- /* tm-sparc.h defines this as 8, but play it safe. */
-
- #undef MAX_REGISTER_RAW_SIZE
- #define MAX_REGISTER_RAW_SIZE (8)
-
- /* Largest value REGISTER_VIRTUAL_SIZE can have. */
- /* tm-sparc.h defines this as 8, but play it safe. */
-
- #undef MAX_REGISTER_VIRTUAL_SIZE
- #define MAX_REGISTER_VIRTUAL_SIZE (8)
-
- /* Convert data from raw format for register REGNUM
- to virtual format for register REGNUM. */
- /* ??? Remove when tm-sparc.h is fixed. */
-
- #undef REGISTER_CONVERT_TO_VIRTUAL
- #define REGISTER_CONVERT_TO_VIRTUAL(REGNUM,FROM,TO) \
- { memcpy ((TO), (FROM), REGISTER_RAW_SIZE (0)); }
-
- /* Convert data from virtual format for register REGNUM
- to raw format for register REGNUM. */
- /* ??? Remove when tm-sparc.h is fixed. */
-
- #undef REGISTER_CONVERT_TO_RAW
- #define REGISTER_CONVERT_TO_RAW(REGNUM,FROM,TO) \
- { memcpy ((TO), (FROM), REGISTER_RAW_SIZE (0)); }
-
- /* Return the GDB type object for the "standard" data type
- of data in register N. */
-
- #undef REGISTER_VIRTUAL_TYPE
- #define REGISTER_VIRTUAL_TYPE(N) \
- ((N) < 32 ? builtin_type_long_long : (N) < 80 ? builtin_type_float : \
- builtin_type_long_long)
-
- /* We use to support both 32 bit and 64 bit pointers.
- We can't anymore because TARGET_PTR_BIT must now be a constant. */
- #undef TARGET_PTR_BIT
- #define TARGET_PTR_BIT 64
-
- /* Store the address of the place in which to copy the structure the
- subroutine will return. This is called from call_function. */
- /* FIXME: V9 uses %o0 for this. */
-
- #undef STORE_STRUCT_RETURN
- #define STORE_STRUCT_RETURN(ADDR, SP) \
- { target_write_memory ((SP)+(16*8), (char *)&(ADDR), 8); }
-
- /* 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. */ /* FIXME */
-
- #undef EXTRACT_RETURN_VALUE
- #define EXTRACT_RETURN_VALUE(TYPE,REGBUF,VALBUF) \
- { \
- if (TYPE_CODE (TYPE) == TYPE_CODE_FLT) \
- { \
- memcpy ((VALBUF), ((int *)(REGBUF))+FP0_REGNUM, TYPE_LENGTH(TYPE));\
- } \
- else \
- memcpy ((VALBUF), \
- (char *)(REGBUF) + 8 * 8 + \
- (TYPE_LENGTH(TYPE) >= 8 ? 0 : 8 - TYPE_LENGTH(TYPE)), \
- 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). */
-
- #undef EXTRACT_STRUCT_VALUE_ADDRESS
- #define EXTRACT_STRUCT_VALUE_ADDRESS(REGBUF) \
- (sparc64_extract_struct_value_address (REGBUF))
-
- extern CORE_ADDR
- sparc64_extract_struct_value_address PARAMS ((char [REGISTER_BYTES]));
-
- /* Return number of bytes at start of arglist that are not really args. */
-
- #undef FRAME_ARGS_SKIP
- #define FRAME_ARGS_SKIP 136
-
- /* Sparc has no reliable single step ptrace call */
-
- #undef NO_SINGLE_STEP
- #define NO_SINGLE_STEP 1
- extern void single_step ();
-
- /* We need two arguments (in general) to the "info frame" command.
- Note that the definition of this macro implies that there exists a
- function "setup_arbitrary_frame" in sparc-tdep.c */
-
- #undef SETUP_ARBITRARY_FRAME /*FIXME*/
- #undef FRAME_SPECIFICATION_DYADIC
- #define FRAME_SPECIFICATION_DYADIC
-
- /* To print every pair of float registers as a double, we use this hook.
- We also print the condition code registers in a readable format
- (FIXME: can expand this to all control regs). */
-
- #undef PRINT_REGISTER_HOOK
- #define PRINT_REGISTER_HOOK(regno) \
- sparc_print_register_hook (regno)
-
- /* Offsets into jmp_buf.
- FIXME: This was borrowed from the v8 stuff and will probably have to change
- for v9. */
-
- #define JB_ELEMENT_SIZE 8 /* Size of each element in jmp_buf */
-
- #define JB_ONSSTACK 0
- #define JB_SIGMASK 1
- #define JB_SP 2
- #define JB_PC 3
- #define JB_NPC 4
- #define JB_PSR 5
- #define JB_G1 6
- #define JB_O0 7
- #define JB_WBCNT 8
-
- /* Figure out where the longjmp will land. We expect that we have just entered
- longjmp and haven't yet setup the stack frame, so the args are still in the
- output regs. %o0 (O0_REGNUM) points at the jmp_buf structure from which we
- extract the pc (JB_PC) that we will land at. The pc is copied into ADDR.
- This routine returns true on success */
-
- extern int
- get_longjmp_target PARAMS ((CORE_ADDR *));
-
- #define GET_LONGJMP_TARGET(ADDR) get_longjmp_target(ADDR)
-