diff options
Diffstat (limited to 'gdb/config/sparc/tm-sparc.h')
| -rw-r--r-- | gdb/config/sparc/tm-sparc.h | 687 |
1 files changed, 443 insertions, 244 deletions
diff --git a/gdb/config/sparc/tm-sparc.h b/gdb/config/sparc/tm-sparc.h index 5419ecb88e2..63148ce08ce 100644 --- a/gdb/config/sparc/tm-sparc.h +++ b/gdb/config/sparc/tm-sparc.h @@ -21,103 +21,148 @@ Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */ -struct frame_info; struct type; struct value; +struct frame_info; -#define TARGET_BYTE_ORDER BIG_ENDIAN - -/* Floating point is IEEE compatible. */ -#define IEEE_FLOAT - -/* If an argument is declared "register", Sun cc will keep it in a register, - never saving it onto the stack. So we better not believe the "p" symbol - descriptor stab. */ - -#define USE_REGISTER_NOT_ARG - -/* When passing a structure to a function, Sun cc passes the address - not the structure itself. It (under SunOS4) creates two symbols, - which we need to combine to a LOC_REGPARM. 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. */ - -#define REG_STRUCT_HAS_ADDR(gcc_p,type) (gcc_p != 1) - -/* Sun /bin/cc gets this right as of SunOS 4.1.x. We need to define - BELIEVE_PCC_PROMOTION to get this right now that the code which - detects gcc2_compiled. is broken. This loses for SunOS 4.0.x and - earlier. */ +/* + * The following enums are purely for the convenience of the GDB + * developer, when debugging GDB. + */ -#define BELIEVE_PCC_PROMOTION 1 +enum { /* Sparc general registers, for all sparc versions. */ + G0_REGNUM, G1_REGNUM, G2_REGNUM, G3_REGNUM, + G4_REGNUM, G5_REGNUM, G6_REGNUM, G7_REGNUM, + O0_REGNUM, O1_REGNUM, O2_REGNUM, O3_REGNUM, + O4_REGNUM, O5_REGNUM, O6_REGNUM, O7_REGNUM, + L0_REGNUM, L1_REGNUM, L2_REGNUM, L3_REGNUM, + L4_REGNUM, L5_REGNUM, L6_REGNUM, L7_REGNUM, + I0_REGNUM, I1_REGNUM, I2_REGNUM, I3_REGNUM, + I4_REGNUM, I5_REGNUM, I6_REGNUM, I7_REGNUM, + FP0_REGNUM /* Floating point register 0 */ +}; + +enum { /* Sparc general registers, alternate names. */ + R0_REGNUM, R1_REGNUM, R2_REGNUM, R3_REGNUM, + R4_REGNUM, R5_REGNUM, R6_REGNUM, R7_REGNUM, + R8_REGNUM, R9_REGNUM, R10_REGNUM, R11_REGNUM, + R12_REGNUM, R13_REGNUM, R14_REGNUM, R15_REGNUM, + R16_REGNUM, R17_REGNUM, R18_REGNUM, R19_REGNUM, + R20_REGNUM, R21_REGNUM, R22_REGNUM, R23_REGNUM, + R24_REGNUM, R25_REGNUM, R26_REGNUM, R27_REGNUM, + R28_REGNUM, R29_REGNUM, R30_REGNUM, R31_REGNUM +}; + +enum { /* Sparc32 control registers. */ + PS_REGNUM = 65, /* PC, NPC, and Y are omitted because */ + WIM_REGNUM = 66, /* they have different values depending on */ + TBR_REGNUM = 67, /* 32-bit / 64-bit mode. */ + FPS_REGNUM = 70, + CPS_REGNUM = 71 +}; + +/* v9 misc. and priv. regs */ + +/* Note: specifying values explicitly for documentation purposes. */ +enum { /* Sparc64 control registers, excluding Y, PC, and NPC. */ + CCR_REGNUM = 82, /* Condition Code Register (%xcc,%icc) */ + FSR_REGNUM = 83, /* Floating Point State */ + FPRS_REGNUM = 84, /* Floating Point Registers State */ + ASI_REGNUM = 86, /* Alternate Space Identifier */ + VER_REGNUM = 87, /* Version register */ + TICK_REGNUM = 88, /* Tick register */ + PIL_REGNUM = 89, /* Processor Interrupt Level */ + PSTATE_REGNUM = 90, /* Processor State */ + TSTATE_REGNUM = 91, /* Trap State */ + TBA_REGNUM = 92, /* Trap Base Address */ + TL_REGNUM = 93, /* Trap Level */ + TT_REGNUM = 94, /* Trap Type */ + TPC_REGNUM = 95, /* Trap pc */ + TNPC_REGNUM = 96, /* Trap npc */ + WSTATE_REGNUM = 97, /* Window State */ + CWP_REGNUM = 98, /* Current Window Pointer */ + CANSAVE_REGNUM = 99, /* Savable Windows */ + CANRESTORE_REGNUM = 100, /* Restorable Windows */ + CLEANWIN_REGNUM = 101, /* Clean Windows */ + OTHERWIN_REGNUM = 102, /* Other Windows */ + ASR16_REGNUM = 103, /* Ancillary State Registers */ + ASR17_REGNUM = 104, + ASR18_REGNUM = 105, + ASR19_REGNUM = 106, + ASR20_REGNUM = 107, + ASR21_REGNUM = 108, + ASR22_REGNUM = 109, + ASR23_REGNUM = 110, + ASR24_REGNUM = 111, + ASR25_REGNUM = 112, + ASR26_REGNUM = 113, + ASR27_REGNUM = 114, + ASR28_REGNUM = 115, + ASR29_REGNUM = 116, + ASR30_REGNUM = 117, + ASR31_REGNUM = 118, + ICC_REGNUM = 119, /* 32 bit condition codes */ + XCC_REGNUM = 120, /* 64 bit condition codes */ + FCC0_REGNUM = 121, /* fp cc reg 0 */ + FCC1_REGNUM = 122, /* fp cc reg 1 */ + FCC2_REGNUM = 123, /* fp cc reg 2 */ + FCC3_REGNUM = 124 /* fp cc reg 3 */ +}; -/* For acc, there's no need to correct LBRAC entries by guessing how - they should work. In fact, this is harmful because the LBRAC - entries now all appear at the end of the function, not intermixed - with the SLINE entries. n_opt_found detects acc for Solaris binaries; - function_stab_type detects acc for SunOS4 binaries. +/* + * Make sparc target multi-archable: April 2000 + */ - For binary from SunOS4 /bin/cc, need to correct LBRAC's. +#if defined (GDB_MULTI_ARCH) && (GDB_MULTI_ARCH > 0) + +/* Multi-arch definition of TARGET_IS_SPARC64, TARGET_ELF64 */ +#undef GDB_TARGET_IS_SPARC64 +#define GDB_TARGET_IS_SPARC64 \ + (sparc_intreg_size () == 8) +#undef TARGET_ELF64 +#define TARGET_ELF64 \ + (sparc_intreg_size () == 8) +extern int sparc_intreg_size (void); +#else + +/* Non-multi-arch: if it isn't defined, define it to zero. */ +#ifndef GDB_TARGET_IS_SPARC64 +#define GDB_TARGET_IS_SPARC64 0 +#endif +#ifndef TARGET_ELF64 +#define TARGET_ELF64 0 +#endif +#endif - For gcc, like acc, don't correct. */ +#if !defined (GDB_MULTI_ARCH) || (GDB_MULTI_ARCH == 0) +/* + * The following defines must go away for MULTI_ARCH + */ -#define SUN_FIXED_LBRAC_BUG \ - (n_opt_found \ - || function_stab_type == N_STSYM \ - || function_stab_type == N_GSYM \ - || processing_gcc_compilation) +/* Initializer for an array of names of registers. + There should be NUM_REGS strings in this initializer. */ -/* Do variables in the debug stabs occur after the N_LBRAC or before it? - acc: after, gcc: before, SunOS4 /bin/cc: before. */ +#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", \ + \ + "y", "psr", "wim", "tbr", "pc", "npc", "fpsr", "cpsr" \ +} -#define VARIABLES_INSIDE_BLOCK(desc, gcc_p) \ - (!(gcc_p) \ - && (n_opt_found \ - || function_stab_type == N_STSYM \ - || function_stab_type == N_GSYM)) +#define TARGET_BYTE_ORDER BIG_ENDIAN /* 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. SKIP_PROLOGUE_FRAMELESS_P advances - the PC past some of the prologue, but stops as soon as it - knows that the function has a frame. Its result is equal - to its input PC if the function is frameless, unequal otherwise. */ - -#define SKIP_PROLOGUE(pc) (sparc_skip_prologue (pc, 0)) -#define SKIP_PROLOGUE_FRAMELESS_P(pc) (sparc_skip_prologue (pc, 1)) -extern CORE_ADDR sparc_skip_prologue PARAMS ((CORE_ADDR, int)); - -/* 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. */ - -/* On the Sun 4 under SunOS, the compile will leave a fake insn which - encodes the structure size being returned. If we detect such - a fake insn, step past it. */ - -#define PC_ADJUST(pc) sparc_pc_adjust(pc) -extern CORE_ADDR sparc_pc_adjust PARAMS ((CORE_ADDR)); - -#define SAVED_PC_AFTER_CALL(frame) PC_ADJUST (read_register (RP_REGNUM)) - -/* Stack grows downward. */ - -#define INNER_THAN(lhs,rhs) ((lhs) < (rhs)) - -/* Stack must be aligned on 64-bit boundaries when synthesizing - function calls. */ - -#define STACK_ALIGN(ADDR) (((ADDR) + 7) & -8) - -/* Sequence of bytes for breakpoint instruction (ta 1). */ - -#define BREAKPOINT {0x91, 0xd0, 0x20, 0x01} - /* Amount PC must be decremented by after a breakpoint. This is often the number of bytes in BREAKPOINT but not always. */ @@ -134,91 +179,48 @@ extern CORE_ADDR sparc_pc_adjust PARAMS ((CORE_ADDR)); #define NUM_REGS 72 -/* Initializer for an array of names of registers. - There should be NUM_REGS strings in this initializer. */ - -#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", \ - \ - "y", "psr", "wim", "tbr", "pc", "npc", "fpsr", "cpsr" } - -/* 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 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 */ + #define Y_REGNUM 64 /* Temp register for multiplication, etc. */ -#define PS_REGNUM 65 /* Contains processor status */ -#define PS_FLAG_CARRY 0x100000 /* Carry bit in PS */ -#define WIM_REGNUM 66 /* Window Invalid Mask (not really supported) */ -#define TBR_REGNUM 67 /* Trap Base Register (not really supported) */ + #define PC_REGNUM 68 /* Contains program counter */ + #define NPC_REGNUM 69 /* Contains next PC */ -#define FPS_REGNUM 70 /* Floating point status register */ -#define CPS_REGNUM 71 /* Coprocessor status register */ + /* Total amount of space needed to store our copies of the machine's register state, the array `registers'. On the sparc, `registers' contains the ins and locals, even though they are saved on the stack rather than with the other registers, and this causes hair - and confusion in places like pop_frame. It might be - better to remove the ins and locals from `registers', make sure - that get_saved_register can get them from the stack (even in the + and confusion in places like pop_frame. It might be better to + remove the ins and locals from `registers', make sure that + get_saved_register can get them from the stack (even in the innermost frame), and make this the way to access them. For the - frame pointer we would do that via TARGET_READ_FP. On the other hand, - that is likely to be confusing or worse for flat frames. */ + frame pointer we would do that via TARGET_READ_FP. On the other + hand, that is likely to be confusing or worse for flat frames. */ #define REGISTER_BYTES (32*4+32*4+8*4) /* Index within `registers' of the first byte of the space for register N. */ -/* ?? */ -#define REGISTER_BYTE(N) ((N)*4) -/* We need to override GET_SAVED_REGISTER so that we can deal with the way - outs change into ins in different frames. HAVE_REGISTER_WINDOWS can't - deal with this case and also handle flat frames at the same time. */ - -struct frame_info; -void sparc_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) \ - sparc_get_saved_register (raw_buffer, optimized, addrp, frame, regnum, lval) +#define REGISTER_BYTE(N) ((N)*4) -/* Number of bytes of storage in the actual machine representation - for register N. */ +/* Number of bytes of storage in the actual machine representation for + register N. */ -/* On the SPARC, all regs are 4 bytes. */ +/* On the SPARC, all regs are 4 bytes (except Sparc64, where they're 8). */ #define REGISTER_RAW_SIZE(N) (4) /* Number of bytes of storage in the program's representation for register N. */ -/* On the SPARC, all regs are 4 bytes. */ +/* On the SPARC, all regs are 4 bytes (except Sparc64, where they're 8). */ #define REGISTER_VIRTUAL_SIZE(N) (4) @@ -234,36 +236,40 @@ void sparc_get_saved_register PARAMS ((char *raw_buffer, int *optimized, CORE_AD of data in register N. */ #define REGISTER_VIRTUAL_TYPE(N) \ - ((N) < 32 ? builtin_type_int : (N) < 64 ? builtin_type_float : \ - builtin_type_int) + ((N) < 32 ? builtin_type_int : (N) < 64 ? builtin_type_float : \ + builtin_type_int) -/* Writing to %g0 is a noop (not an error or exception or anything like - that, however). */ +/* Sun /bin/cc gets this right as of SunOS 4.1.x. We need to define + BELIEVE_PCC_PROMOTION to get this right now that the code which + detects gcc2_compiled. is broken. This loses for SunOS 4.0.x and + earlier. */ -#define CANNOT_STORE_REGISTER(regno) ((regno) == G0_REGNUM) +#define BELIEVE_PCC_PROMOTION 1 -/* Store the address of the place in which to copy the structure the - subroutine will return. This is called from call_function_by_hand. - The ultimate mystery is, tho, what is the value "16"? */ +/* Advance PC across any function entry prologue instructions + to reach some "real" code. SKIP_PROLOGUE_FRAMELESS_P advances + the PC past some of the prologue, but stops as soon as it + knows that the function has a frame. Its result is equal + to its input PC if the function is frameless, unequal otherwise. */ -#define STORE_STRUCT_RETURN(ADDR, SP) \ - { char val[4]; \ - store_unsigned_integer (val, 4, (ADDR)); \ - write_memory ((SP)+(16*4), val, 4); } +#define SKIP_PROLOGUE(PC) sparc_skip_prologue (PC, 0) -/* 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. */ +/* 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 EXTRACT_RETURN_VALUE(TYPE,REGBUF,VALBUF) \ - sparc_extract_return_value(TYPE, REGBUF, VALBUF) -extern void -sparc_extract_return_value PARAMS ((struct type *, char[], char *)); +#define SAVED_PC_AFTER_CALL(FRAME) PC_ADJUST (read_register (RP_REGNUM)) + +/* Stack grows downward. */ + +#define INNER_THAN(LHS,RHS) ((LHS) < (RHS)) + +/* Write into appropriate registers a function return value of type + TYPE, given in virtual format. */ -/* Write into appropriate registers a function return value - of type TYPE, given in virtual format. */ -#define STORE_RETURN_VALUE(TYPE,VALBUF) \ - sparc_store_return_value(TYPE, VALBUF) +#define STORE_RETURN_VALUE(TYPE, VALBUF) \ + sparc_store_return_value (TYPE, VALBUF) extern void sparc_store_return_value PARAMS ((struct type *, char *)); /* Extract from an array REGBUF containing the (raw) register state @@ -271,11 +277,146 @@ extern void sparc_store_return_value PARAMS ((struct type *, char *)); as a CORE_ADDR (or an expression that can be used as one). */ #define EXTRACT_STRUCT_VALUE_ADDRESS(REGBUF) \ - (sparc_extract_struct_value_address (REGBUF)) + sparc_extract_struct_value_address (REGBUF) extern CORE_ADDR - sparc_extract_struct_value_address PARAMS ((char[REGISTER_BYTES])); - +sparc_extract_struct_value_address PARAMS ((char *)); + +/* 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. */ + +#define COERCE_FLOAT_TO_DOUBLE(FORMAL, ACTUAL) (1) + +/* Stack must be aligned on 64-bit boundaries when synthesizing + function calls (128-bit for sparc64). */ + +#define STACK_ALIGN(ADDR) sparc32_stack_align (ADDR) +extern CORE_ADDR sparc32_stack_align (CORE_ADDR addr); + +/* Floating point is IEEE compatible. */ +#define IEEE_FLOAT (1) + +/* The Sparc returns long doubles on the stack. */ + +#define RETURN_VALUE_ON_STACK(TYPE) \ + (TYPE_CODE(TYPE) == TYPE_CODE_FLT \ + && TYPE_LENGTH(TYPE) > 8) + +/* When passing a structure to a function, Sun cc passes the address + not the structure itself. It (under SunOS4) creates two symbols, + which we need to combine to a LOC_REGPARM. 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. */ + +#define REG_STRUCT_HAS_ADDR(GCC_P, TYPE) \ + sparc_reg_struct_has_addr (GCC_P, TYPE) +extern int sparc_reg_struct_has_addr (int, struct type *); + +#endif /* GDB_MULTI_ARCH */ + +#if defined (GDB_MULTI_ARCH) && (GDB_MULTI_ARCH > 0) +/* + * The following defines should ONLY appear for MULTI_ARCH. + */ + +/* Multi-arch the nPC and Y registers. */ +#define Y_REGNUM (sparc_y_regnum ()) +extern int sparc_npc_regnum (void); +extern int sparc_y_regnum (void); + +#endif /* GDB_MULTI_ARCH */ + +/* On the Sun 4 under SunOS, the compile will leave a fake insn which + encodes the structure size being returned. If we detect such + a fake insn, step past it. */ + +#define PC_ADJUST(PC) sparc_pc_adjust (PC) +extern CORE_ADDR sparc_pc_adjust PARAMS ((CORE_ADDR)); + +/* Advance PC across any function entry prologue instructions to reach + some "real" code. SKIP_PROLOGUE_FRAMELESS_P advances the PC past + some of the prologue, but stops as soon as it knows that the + function has a frame. Its result is equal to its input PC if the + function is frameless, unequal otherwise. */ + +#define SKIP_PROLOGUE_FRAMELESS_P(PC) sparc_skip_prologue (PC, 1) +extern CORE_ADDR sparc_skip_prologue PARAMS ((CORE_ADDR, int)); + +/* If an argument is declared "register", Sun cc will keep it in a register, + never saving it onto the stack. So we better not believe the "p" symbol + descriptor stab. */ + +#define USE_REGISTER_NOT_ARG + +/* For acc, there's no need to correct LBRAC entries by guessing how + they should work. In fact, this is harmful because the LBRAC + entries now all appear at the end of the function, not intermixed + with the SLINE entries. n_opt_found detects acc for Solaris binaries; + function_stab_type detects acc for SunOS4 binaries. + + For binary from SunOS4 /bin/cc, need to correct LBRAC's. + + For gcc, like acc, don't correct. */ + +#define SUN_FIXED_LBRAC_BUG \ + (n_opt_found \ + || function_stab_type == N_STSYM \ + || function_stab_type == N_GSYM \ + || processing_gcc_compilation) + +/* Do variables in the debug stabs occur after the N_LBRAC or before it? + acc: after, gcc: before, SunOS4 /bin/cc: before. */ + +#define VARIABLES_INSIDE_BLOCK(desc, gcc_p) \ + (!(gcc_p) \ + && (n_opt_found \ + || function_stab_type == N_STSYM \ + || function_stab_type == N_GSYM)) + +/* Sequence of bytes for breakpoint instruction (ta 1). */ + +#define BREAKPOINT {0x91, 0xd0, 0x20, 0x01} + +/* 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 G0_REGNUM 0 /* %g0 */ +#define G1_REGNUM 1 /* %g1 */ +#define O0_REGNUM 8 /* %o0 */ +#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 I7_REGNUM 31 /* Last local reg saved on stack frame */ +#define PS_REGNUM 65 /* Contains processor status */ +#define PS_FLAG_CARRY 0x100000 /* Carry bit in PS */ +#define WIM_REGNUM 66 /* Window Invalid Mask (not really supported) */ +#define TBR_REGNUM 67 /* Trap Base Register (not really supported) */ +#define FPS_REGNUM 70 /* Floating point status register */ +#define CPS_REGNUM 71 /* Coprocessor status register */ + +/* Writing to %g0 is a noop (not an error or exception or anything like + that, however). */ + +#define CANNOT_STORE_REGISTER(regno) ((regno) == G0_REGNUM) + +/* + * FRAME_CHAIN and FRAME_INFO definitions, collected here for convenience. + */ + +#if !defined (GDB_MULTI_ARCH) || (GDB_MULTI_ARCH == 0) +/* + * The following defines must go away for MULTI_ARCH. + */ /* Describe the pointer in each stack frame to the previous stack frame (its caller). */ @@ -310,64 +451,56 @@ extern CORE_ADDR GCC 2.6 and later can generate ``flat register window'' code that makes frames by explicitly saving those registers that need to be - saved. %i7 is used as the frame pointer, and the frame is laid out so - that flat and non-flat calls can be intermixed freely within a - program. Unfortunately for GDB, this means it must detect and record - the flatness of frames. + saved. %i7 is used as the frame pointer, and the frame is laid out + so that flat and non-flat calls can be intermixed freely within a + program. Unfortunately for GDB, this means it must detect and + record the flatness of frames. Since the prologue in a flat frame also tells us where fp and pc have been stashed (the frame is of variable size, so their location is not fixed), it's convenient to record them in the frame info. */ -#define EXTRA_FRAME_INFO \ - CORE_ADDR bottom; \ - int in_prologue; \ - int flat; \ +#define EXTRA_FRAME_INFO \ + CORE_ADDR bottom; \ + int in_prologue; \ + int flat; \ /* Following fields only relevant for flat frames. */ \ - CORE_ADDR pc_addr; \ - CORE_ADDR fp_addr; \ + CORE_ADDR pc_addr; \ + CORE_ADDR fp_addr; \ /* Add this to ->frame to get the value of the stack pointer at the */ \ /* time of the register saves. */ \ int sp_offset; -#define FRAME_INIT_SAVED_REGS(fp) /*no-op */ - -#define INIT_EXTRA_FRAME_INFO(fromleaf, fci) \ - sparc_init_extra_frame_info (fromleaf, fci) -extern void sparc_init_extra_frame_info PARAMS ((int, struct frame_info *)); +/* We need to override GET_SAVED_REGISTER so that we can deal with the way + outs change into ins in different frames. HAVE_REGISTER_WINDOWS can't + deal with this case and also handle flat frames at the same time. */ -#define PRINT_EXTRA_FRAME_INFO(fi) \ - { \ - if ((fi) && (fi)->flat) \ - printf_filtered (" flat, pc saved at 0x%s, fp saved at 0x%s\n", \ - paddr_nz ((fi)->pc_addr), paddr_nz ((fi)->fp_addr)); \ - } +void sparc_get_saved_register PARAMS ((char *raw_buffer, + int *optimized, + CORE_ADDR * addrp, + struct frame_info * frame, + int regnum, + enum lval_type * lvalp)); -#define FRAME_CHAIN(thisframe) (sparc_frame_chain (thisframe)) -extern CORE_ADDR sparc_frame_chain PARAMS ((struct frame_info *)); +#define GET_SAVED_REGISTER(RAW_BUFFER, OPTIMIZED, ADDRP, FRAME, REGNUM, LVAL) \ + sparc_get_saved_register (RAW_BUFFER, OPTIMIZED, ADDRP, \ + FRAME, REGNUM, LVAL) -/* INIT_EXTRA_FRAME_INFO needs the PC to detect flat frames. */ +#define FRAME_INIT_SAVED_REGS(FP) /*no-op */ -#define INIT_FRAME_PC(fromleaf, prev) /* nothing */ -#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_EXTRA_FRAME_INFO(FROMLEAF, FCI) \ + sparc_init_extra_frame_info (FROMLEAF, FCI) +extern void sparc_init_extra_frame_info PARAMS ((int, struct frame_info *)); -/* Define other aspects of the stack frame. */ +#define FRAME_CHAIN(THISFRAME) (sparc_frame_chain (THISFRAME)) +extern CORE_ADDR sparc_frame_chain PARAMS ((struct frame_info *)); /* 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_look_for_prologue(FI)) -/* The location of I0 w.r.t SP. This is actually dependent on how the system's - window overflow/underflow routines are written. Most vendors save the L regs - followed by the I regs (at the higher address). Some vendors get it wrong. - */ - -#define FRAME_SAVED_L0 0 -#define FRAME_SAVED_I0 (8 * REGISTER_RAW_SIZE (L0_REGNUM)) +#define FRAMELESS_FUNCTION_INVOCATION(FI) \ + frameless_look_for_prologue (FI) /* Where is the PC for a specific frame */ @@ -375,23 +508,46 @@ extern CORE_ADDR sparc_frame_chain PARAMS ((struct frame_info *)); extern CORE_ADDR sparc_frame_saved_pc PARAMS ((struct frame_info *)); /* If the argument is on the stack, it will be here. */ -#define FRAME_ARGS_ADDRESS(fi) ((fi)->frame) +#define FRAME_ARGS_ADDRESS(FI) ((FI)->frame) -#define FRAME_STRUCT_ARGS_ADDRESS(fi) ((fi)->frame) - -#define FRAME_LOCALS_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(fi) (-1) +#define FRAME_NUM_ARGS(FI) (-1) /* Return number of bytes at start of arglist that are not really args. */ #define FRAME_ARGS_SKIP 68 - + +#endif /* GDB_MULTI_ARCH */ + +#define PRINT_EXTRA_FRAME_INFO(FI) \ + sparc_print_extra_frame_info (FI) +extern void sparc_print_extra_frame_info (struct frame_info *); + +/* INIT_EXTRA_FRAME_INFO needs the PC to detect flat frames. */ + +#define INIT_FRAME_PC(FROMLEAF, PREV) /* nothing */ +#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 other aspects of the stack frame. */ + +/* The location of I0 w.r.t SP. This is actually dependent on how the + system's window overflow/underflow routines are written. Most + vendors save the L regs followed by the I regs (at the higher + address). Some vendors get it wrong. */ + +#define FRAME_SAVED_L0 0 +#define FRAME_SAVED_I0 (8 * REGISTER_RAW_SIZE (L0_REGNUM)) + +#define FRAME_STRUCT_ARGS_ADDRESS(FI) ((FI)->frame) + /* Things needed for making the inferior call functions. */ /* * First of all, let me give my opinion of what the DUMMY_FRAME @@ -455,20 +611,13 @@ extern CORE_ADDR sparc_frame_saved_pc PARAMS ((struct frame_info *)); * CALL_DUMMY, as directed by call_function). */ -/* Push an empty stack frame, to record the current PC, etc. */ - -#define PUSH_DUMMY_FRAME sparc_push_dummy_frame () -#define POP_FRAME sparc_pop_frame () - -void sparc_push_dummy_frame PARAMS ((void)), sparc_pop_frame PARAMS ((void)); - #ifndef CALL_DUMMY /* This sequence of words is the instructions - 0: bc 10 00 01 mov %g1, %fp - 4: 9d e3 80 00 save %sp, %g0, %sp - 8: bc 10 00 02 mov %g2, %fp - c: be 10 00 03 mov %g3, %i7 + 00: bc 10 00 01 mov %g1, %fp + 04: 9d e3 80 00 save %sp, %g0, %sp + 08: bc 10 00 02 mov %g2, %fp + 0c: be 10 00 03 mov %g3, %i7 10: da 03 a0 58 ld [ %sp + 0x58 ], %o5 14: d8 03 a0 54 ld [ %sp + 0x54 ], %o4 18: d6 03 a0 50 ld [ %sp + 0x50 ], %o3 @@ -485,7 +634,12 @@ void sparc_push_dummy_frame PARAMS ((void)), sparc_pop_frame PARAMS ((void)); * this is a multiple of 8 (not only 4) bytes. * the `call' insn is a relative, not an absolute call. * the `nop' at the end is needed to keep the trap from - clobbering things (if NPC pointed to garbage instead). + clobbering things (if NPC pointed to garbage instead). + */ + +#if !defined (GDB_MULTI_ARCH) || (GDB_MULTI_ARCH == 0) +/* + * The following defines must go away for MULTI_ARCH. */ #define CALL_DUMMY { 0xbc100001, 0x9de38000, 0xbc100002, 0xbe100003, \ @@ -506,26 +660,86 @@ void sparc_push_dummy_frame PARAMS ((void)), sparc_pop_frame PARAMS ((void)); #define CALL_DUMMY_CALL_OFFSET (CALL_DUMMY_START_OFFSET + 0x24) -/* Offset within CALL_DUMMY of the 'ta 1' instruction. */ +/* Offset within CALL_DUMMY of the 'ta 1' trap instruction. */ #define CALL_DUMMY_BREAKPOINT_OFFSET (CALL_DUMMY_START_OFFSET + 0x30) #define CALL_DUMMY_STACK_ADJUST 68 -#endif +/* Call dummy method (eg. on stack, at entry point, etc.) */ + +#define CALL_DUMMY_LOCATION ON_STACK + +/* Method for detecting dummy frames. */ + +#define PC_IN_CALL_DUMMY(PC, SP, FRAME_ADDRESS) \ + pc_in_call_dummy_on_stack (PC, SP, FRAME_ADDRESS) + +#endif /* GDB_MULTI_ARCH */ + +#endif /* CALL_DUMMY */ + +#if !defined (GDB_MULTI_ARCH) || (GDB_MULTI_ARCH == 0) +/* + * The following defines must go away for MULTI_ARCH. + */ + /* Insert the specified number of args and function address into a call sequence of the above form stored at DUMMYNAME. */ -#define FIX_CALL_DUMMY(dummyname, pc, fun, nargs, args, type, gcc_p) \ - sparc_fix_call_dummy (dummyname, pc, fun, type, gcc_p) +#define FIX_CALL_DUMMY(DUMMYNAME, PC, FUN, NARGS, ARGS, TYPE, GCC_P) \ + sparc_fix_call_dummy (DUMMYNAME, PC, FUN, TYPE, GCC_P) void sparc_fix_call_dummy PARAMS ((char *dummy, CORE_ADDR pc, CORE_ADDR fun, struct type * value_type, int using_gcc)); -/* The Sparc returns long doubles on the stack. */ +/* Arguments smaller than an int must be promoted to ints when + synthesizing function calls. */ + +/* Push an empty stack frame, to record the current PC, etc. */ + +#define PUSH_DUMMY_FRAME sparc_push_dummy_frame () +#define POP_FRAME sparc_pop_frame () + +void sparc_push_dummy_frame PARAMS ((void)); +void sparc_pop_frame PARAMS ((void)); + +#define PUSH_ARGUMENTS(NARGS, ARGS, SP, STRUCT_RETURN, STRUCT_ADDR) \ + sparc32_push_arguments (NARGS, ARGS, SP, STRUCT_RETURN, STRUCT_ADDR) + +extern CORE_ADDR +sparc32_push_arguments PARAMS ((int, + struct value **, + CORE_ADDR, + int, + CORE_ADDR)); + +/* Store the address of the place in which to copy the structure the + subroutine will return. This is called from call_function_by_hand. + The ultimate mystery is, tho, what is the value "16"? */ + +#define STORE_STRUCT_RETURN(ADDR, SP) \ + { char val[4]; \ + store_unsigned_integer (val, 4, (ADDR)); \ + write_memory ((SP)+(16*4), val, 4); } + +/* Default definition of USE_STRUCT_CONVENTION. */ + +#ifndef USE_STRUCT_CONVENTION +#define USE_STRUCT_CONVENTION(GCC_P, TYPE) \ + generic_use_struct_convention (GCC_P, TYPE) +#endif + +/* 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) \ + sparc32_extract_return_value (TYPE, REGBUF, VALBUF) +extern void +sparc32_extract_return_value PARAMS ((struct type *, char[], char *)); + +#endif /* GDB_MULTI_ARCH */ -#define RETURN_VALUE_ON_STACK(TYPE) \ - (TYPE_CODE(TYPE) == TYPE_CODE_FLT \ - && TYPE_LENGTH(TYPE) > 8) /* Sparc has no reliable single step ptrace call */ @@ -548,7 +762,6 @@ extern struct frame_info *setup_arbitrary_frame PARAMS ((int, CORE_ADDR *)); sparc_print_register_hook (regno) extern void sparc_print_register_hook PARAMS ((int regno)); - /* Optimization for storing registers to the inferior. The hook DO_DEFERRED_STORES actually executes any deferred stores. It is called any time @@ -564,21 +777,7 @@ extern int deferred_stores; #define CLEAR_DEFERRED_STORES \ deferred_stores = 0; -/* 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. */ - -#define COERCE_FLOAT_TO_DOUBLE(formal, actual) (1) - /* Select the sparc disassembler */ #define TM_PRINT_INSN_MACH bfd_mach_sparc -/* Arguments smaller than an int must promoted to ints when synthesizing - function calls. */ - -#define PUSH_ARGUMENTS(nargs, args, sp, struct_return, struct_addr) \ - (sparc_push_arguments((nargs), (args), (sp), (struct_return), (struct_addr))) -extern CORE_ADDR - sparc_push_arguments PARAMS ((int, struct value **, CORE_ADDR, int, CORE_ADDR)); |