| /* Target-dependent code for UltraSPARC. |
| |
| Copyright 2003, 2004, 2005 Free Software Foundation, Inc. |
| |
| 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. */ |
| |
| #include "defs.h" |
| #include "arch-utils.h" |
| #include "floatformat.h" |
| #include "frame.h" |
| #include "frame-base.h" |
| #include "frame-unwind.h" |
| #include "gdbcore.h" |
| #include "gdbtypes.h" |
| #include "inferior.h" |
| #include "symtab.h" |
| #include "objfiles.h" |
| #include "osabi.h" |
| #include "regcache.h" |
| #include "target.h" |
| #include "value.h" |
| |
| #include "gdb_assert.h" |
| #include "gdb_string.h" |
| |
| #include "sparc64-tdep.h" |
| |
| /* This file implements the The SPARC 64-bit ABI as defined by the |
| section "Low-Level System Information" of the SPARC Compliance |
| Definition (SCD) 2.4.1, which is the 64-bit System V psABI for |
| SPARC. */ |
| |
| /* Please use the sparc32_-prefix for 32-bit specific code, the |
| sparc64_-prefix for 64-bit specific code and the sparc_-prefix for |
| code can handle both. */ |
| |
| /* The functions on this page are intended to be used to classify |
| function arguments. */ |
| |
| /* Check whether TYPE is "Integral or Pointer". */ |
| |
| static int |
| sparc64_integral_or_pointer_p (const struct type *type) |
| { |
| switch (TYPE_CODE (type)) |
| { |
| case TYPE_CODE_INT: |
| case TYPE_CODE_BOOL: |
| case TYPE_CODE_CHAR: |
| case TYPE_CODE_ENUM: |
| case TYPE_CODE_RANGE: |
| { |
| int len = TYPE_LENGTH (type); |
| gdb_assert (len == 1 || len == 2 || len == 4 || len == 8); |
| } |
| return 1; |
| case TYPE_CODE_PTR: |
| case TYPE_CODE_REF: |
| { |
| int len = TYPE_LENGTH (type); |
| gdb_assert (len == 8); |
| } |
| return 1; |
| default: |
| break; |
| } |
| |
| return 0; |
| } |
| |
| /* Check whether TYPE is "Floating". */ |
| |
| static int |
| sparc64_floating_p (const struct type *type) |
| { |
| switch (TYPE_CODE (type)) |
| { |
| case TYPE_CODE_FLT: |
| { |
| int len = TYPE_LENGTH (type); |
| gdb_assert (len == 4 || len == 8 || len == 16); |
| } |
| return 1; |
| default: |
| break; |
| } |
| |
| return 0; |
| } |
| |
| /* Check whether TYPE is "Structure or Union". */ |
| |
| static int |
| sparc64_structure_or_union_p (const struct type *type) |
| { |
| switch (TYPE_CODE (type)) |
| { |
| case TYPE_CODE_STRUCT: |
| case TYPE_CODE_UNION: |
| return 1; |
| default: |
| break; |
| } |
| |
| return 0; |
| } |
| |
| /* Register information. */ |
| |
| struct sparc64_register_info |
| { |
| char *name; |
| struct type **type; |
| }; |
| |
| static struct sparc64_register_info sparc64_register_info[] = |
| { |
| { "g0", &builtin_type_int64 }, |
| { "g1", &builtin_type_int64 }, |
| { "g2", &builtin_type_int64 }, |
| { "g3", &builtin_type_int64 }, |
| { "g4", &builtin_type_int64 }, |
| { "g5", &builtin_type_int64 }, |
| { "g6", &builtin_type_int64 }, |
| { "g7", &builtin_type_int64 }, |
| |
| { "o0", &builtin_type_int64 }, |
| { "o1", &builtin_type_int64 }, |
| { "o2", &builtin_type_int64 }, |
| { "o3", &builtin_type_int64 }, |
| { "o4", &builtin_type_int64 }, |
| { "o5", &builtin_type_int64 }, |
| { "sp", &builtin_type_void_data_ptr }, |
| { "o7", &builtin_type_int64 }, |
| |
| { "l0", &builtin_type_int64 }, |
| { "l1", &builtin_type_int64 }, |
| { "l2", &builtin_type_int64 }, |
| { "l3", &builtin_type_int64 }, |
| { "l4", &builtin_type_int64 }, |
| { "l5", &builtin_type_int64 }, |
| { "l6", &builtin_type_int64 }, |
| { "l7", &builtin_type_int64 }, |
| |
| { "i0", &builtin_type_int64 }, |
| { "i1", &builtin_type_int64 }, |
| { "i2", &builtin_type_int64 }, |
| { "i3", &builtin_type_int64 }, |
| { "i4", &builtin_type_int64 }, |
| { "i5", &builtin_type_int64 }, |
| { "fp", &builtin_type_void_data_ptr }, |
| { "i7", &builtin_type_int64 }, |
| |
| { "f0", &builtin_type_float }, |
| { "f1", &builtin_type_float }, |
| { "f2", &builtin_type_float }, |
| { "f3", &builtin_type_float }, |
| { "f4", &builtin_type_float }, |
| { "f5", &builtin_type_float }, |
| { "f6", &builtin_type_float }, |
| { "f7", &builtin_type_float }, |
| { "f8", &builtin_type_float }, |
| { "f9", &builtin_type_float }, |
| { "f10", &builtin_type_float }, |
| { "f11", &builtin_type_float }, |
| { "f12", &builtin_type_float }, |
| { "f13", &builtin_type_float }, |
| { "f14", &builtin_type_float }, |
| { "f15", &builtin_type_float }, |
| { "f16", &builtin_type_float }, |
| { "f17", &builtin_type_float }, |
| { "f18", &builtin_type_float }, |
| { "f19", &builtin_type_float }, |
| { "f20", &builtin_type_float }, |
| { "f21", &builtin_type_float }, |
| { "f22", &builtin_type_float }, |
| { "f23", &builtin_type_float }, |
| { "f24", &builtin_type_float }, |
| { "f25", &builtin_type_float }, |
| { "f26", &builtin_type_float }, |
| { "f27", &builtin_type_float }, |
| { "f28", &builtin_type_float }, |
| { "f29", &builtin_type_float }, |
| { "f30", &builtin_type_float }, |
| { "f31", &builtin_type_float }, |
| { "f32", &builtin_type_double }, |
| { "f34", &builtin_type_double }, |
| { "f36", &builtin_type_double }, |
| { "f38", &builtin_type_double }, |
| { "f40", &builtin_type_double }, |
| { "f42", &builtin_type_double }, |
| { "f44", &builtin_type_double }, |
| { "f46", &builtin_type_double }, |
| { "f48", &builtin_type_double }, |
| { "f50", &builtin_type_double }, |
| { "f52", &builtin_type_double }, |
| { "f54", &builtin_type_double }, |
| { "f56", &builtin_type_double }, |
| { "f58", &builtin_type_double }, |
| { "f60", &builtin_type_double }, |
| { "f62", &builtin_type_double }, |
| |
| { "pc", &builtin_type_void_func_ptr }, |
| { "npc", &builtin_type_void_func_ptr }, |
| |
| /* This raw register contains the contents of %cwp, %pstate, %asi |
| and %ccr as laid out in a %tstate register. */ |
| /* FIXME: Give it a name until we start using register groups. */ |
| { "state", &builtin_type_int64 }, |
| |
| { "fsr", &builtin_type_int64 }, |
| { "fprs", &builtin_type_int64 }, |
| |
| /* "Although Y is a 64-bit register, its high-order 32 bits are |
| reserved and always read as 0." */ |
| { "y", &builtin_type_int64 } |
| }; |
| |
| /* Total number of registers. */ |
| #define SPARC64_NUM_REGS ARRAY_SIZE (sparc64_register_info) |
| |
| /* We provide the aliases %d0..%d62 and %q0..%q60 for the floating |
| registers as "psuedo" registers. */ |
| |
| static struct sparc64_register_info sparc64_pseudo_register_info[] = |
| { |
| { "cwp", &builtin_type_int64 }, |
| { "pstate", &builtin_type_int64 }, |
| { "asi", &builtin_type_int64 }, |
| { "ccr", &builtin_type_int64 }, |
| |
| { "d0", &builtin_type_double }, |
| { "d2", &builtin_type_double }, |
| { "d4", &builtin_type_double }, |
| { "d6", &builtin_type_double }, |
| { "d8", &builtin_type_double }, |
| { "d10", &builtin_type_double }, |
| { "d12", &builtin_type_double }, |
| { "d14", &builtin_type_double }, |
| { "d16", &builtin_type_double }, |
| { "d18", &builtin_type_double }, |
| { "d20", &builtin_type_double }, |
| { "d22", &builtin_type_double }, |
| { "d24", &builtin_type_double }, |
| { "d26", &builtin_type_double }, |
| { "d28", &builtin_type_double }, |
| { "d30", &builtin_type_double }, |
| { "d32", &builtin_type_double }, |
| { "d34", &builtin_type_double }, |
| { "d36", &builtin_type_double }, |
| { "d38", &builtin_type_double }, |
| { "d40", &builtin_type_double }, |
| { "d42", &builtin_type_double }, |
| { "d44", &builtin_type_double }, |
| { "d46", &builtin_type_double }, |
| { "d48", &builtin_type_double }, |
| { "d50", &builtin_type_double }, |
| { "d52", &builtin_type_double }, |
| { "d54", &builtin_type_double }, |
| { "d56", &builtin_type_double }, |
| { "d58", &builtin_type_double }, |
| { "d60", &builtin_type_double }, |
| { "d62", &builtin_type_double }, |
| |
| { "q0", &builtin_type_long_double }, |
| { "q4", &builtin_type_long_double }, |
| { "q8", &builtin_type_long_double }, |
| { "q12", &builtin_type_long_double }, |
| { "q16", &builtin_type_long_double }, |
| { "q20", &builtin_type_long_double }, |
| { "q24", &builtin_type_long_double }, |
| { "q28", &builtin_type_long_double }, |
| { "q32", &builtin_type_long_double }, |
| { "q36", &builtin_type_long_double }, |
| { "q40", &builtin_type_long_double }, |
| { "q44", &builtin_type_long_double }, |
| { "q48", &builtin_type_long_double }, |
| { "q52", &builtin_type_long_double }, |
| { "q56", &builtin_type_long_double }, |
| { "q60", &builtin_type_long_double } |
| }; |
| |
| /* Total number of pseudo registers. */ |
| #define SPARC64_NUM_PSEUDO_REGS ARRAY_SIZE (sparc64_pseudo_register_info) |
| |
| /* Return the name of register REGNUM. */ |
| |
| static const char * |
| sparc64_register_name (int regnum) |
| { |
| if (regnum >= 0 && regnum < SPARC64_NUM_REGS) |
| return sparc64_register_info[regnum].name; |
| |
| if (regnum >= SPARC64_NUM_REGS |
| && regnum < SPARC64_NUM_REGS + SPARC64_NUM_PSEUDO_REGS) |
| return sparc64_pseudo_register_info[regnum - SPARC64_NUM_REGS].name; |
| |
| return NULL; |
| } |
| |
| /* Return the GDB type object for the "standard" data type of data in |
| register REGNUM. */ |
| |
| static struct type * |
| sparc64_register_type (struct gdbarch *gdbarch, int regnum) |
| { |
| if (regnum >= SPARC64_NUM_REGS |
| && regnum < SPARC64_NUM_REGS + SPARC64_NUM_PSEUDO_REGS) |
| return *sparc64_pseudo_register_info[regnum - SPARC64_NUM_REGS].type; |
| |
| gdb_assert (regnum >= 0 && regnum < SPARC64_NUM_REGS); |
| return *sparc64_register_info[regnum].type; |
| } |
| |
| static void |
| sparc64_pseudo_register_read (struct gdbarch *gdbarch, |
| struct regcache *regcache, |
| int regnum, void *buf) |
| { |
| gdb_assert (regnum >= SPARC64_NUM_REGS); |
| |
| if (regnum >= SPARC64_D0_REGNUM && regnum <= SPARC64_D30_REGNUM) |
| { |
| regnum = SPARC_F0_REGNUM + 2 * (regnum - SPARC64_D0_REGNUM); |
| regcache_raw_read (regcache, regnum, buf); |
| regcache_raw_read (regcache, regnum + 1, ((char *)buf) + 4); |
| } |
| else if (regnum >= SPARC64_D32_REGNUM && regnum <= SPARC64_D62_REGNUM) |
| { |
| regnum = SPARC64_F32_REGNUM + (regnum - SPARC64_D32_REGNUM); |
| regcache_raw_read (regcache, regnum, buf); |
| } |
| else if (regnum >= SPARC64_Q0_REGNUM && regnum <= SPARC64_Q28_REGNUM) |
| { |
| regnum = SPARC_F0_REGNUM + 4 * (regnum - SPARC64_Q0_REGNUM); |
| regcache_raw_read (regcache, regnum, buf); |
| regcache_raw_read (regcache, regnum + 1, ((char *)buf) + 4); |
| regcache_raw_read (regcache, regnum + 2, ((char *)buf) + 8); |
| regcache_raw_read (regcache, regnum + 3, ((char *)buf) + 12); |
| } |
| else if (regnum >= SPARC64_Q32_REGNUM && regnum <= SPARC64_Q60_REGNUM) |
| { |
| regnum = SPARC64_F32_REGNUM + 2 * (regnum - SPARC64_Q32_REGNUM); |
| regcache_raw_read (regcache, regnum, buf); |
| regcache_raw_read (regcache, regnum + 1, ((char *)buf) + 8); |
| } |
| else if (regnum == SPARC64_CWP_REGNUM |
| || regnum == SPARC64_PSTATE_REGNUM |
| || regnum == SPARC64_ASI_REGNUM |
| || regnum == SPARC64_CCR_REGNUM) |
| { |
| ULONGEST state; |
| |
| regcache_raw_read_unsigned (regcache, SPARC64_STATE_REGNUM, &state); |
| switch (regnum) |
| { |
| case SPARC64_CWP_REGNUM: |
| state = (state >> 0) & ((1 << 5) - 1); |
| break; |
| case SPARC64_PSTATE_REGNUM: |
| state = (state >> 8) & ((1 << 12) - 1); |
| break; |
| case SPARC64_ASI_REGNUM: |
| state = (state >> 24) & ((1 << 8) - 1); |
| break; |
| case SPARC64_CCR_REGNUM: |
| state = (state >> 32) & ((1 << 8) - 1); |
| break; |
| } |
| store_unsigned_integer (buf, 8, state); |
| } |
| } |
| |
| static void |
| sparc64_pseudo_register_write (struct gdbarch *gdbarch, |
| struct regcache *regcache, |
| int regnum, const void *buf) |
| { |
| gdb_assert (regnum >= SPARC64_NUM_REGS); |
| |
| if (regnum >= SPARC64_D0_REGNUM && regnum <= SPARC64_D30_REGNUM) |
| { |
| regnum = SPARC_F0_REGNUM + 2 * (regnum - SPARC64_D0_REGNUM); |
| regcache_raw_write (regcache, regnum, buf); |
| regcache_raw_write (regcache, regnum + 1, ((const char *)buf) + 4); |
| } |
| else if (regnum >= SPARC64_D32_REGNUM && regnum <= SPARC64_D62_REGNUM) |
| { |
| regnum = SPARC64_F32_REGNUM + (regnum - SPARC64_D32_REGNUM); |
| regcache_raw_write (regcache, regnum, buf); |
| } |
| else if (regnum >= SPARC64_Q0_REGNUM && regnum <= SPARC64_Q28_REGNUM) |
| { |
| regnum = SPARC_F0_REGNUM + 4 * (regnum - SPARC64_Q0_REGNUM); |
| regcache_raw_write (regcache, regnum, buf); |
| regcache_raw_write (regcache, regnum + 1, ((const char *)buf) + 4); |
| regcache_raw_write (regcache, regnum + 2, ((const char *)buf) + 8); |
| regcache_raw_write (regcache, regnum + 3, ((const char *)buf) + 12); |
| } |
| else if (regnum >= SPARC64_Q32_REGNUM && regnum <= SPARC64_Q60_REGNUM) |
| { |
| regnum = SPARC64_F32_REGNUM + 2 * (regnum - SPARC64_Q32_REGNUM); |
| regcache_raw_write (regcache, regnum, buf); |
| regcache_raw_write (regcache, regnum + 1, ((const char *)buf) + 8); |
| } |
| else if (regnum == SPARC64_CWP_REGNUM |
| || regnum == SPARC64_PSTATE_REGNUM |
| || regnum == SPARC64_ASI_REGNUM |
| || regnum == SPARC64_CCR_REGNUM) |
| { |
| ULONGEST state, bits; |
| |
| regcache_raw_read_unsigned (regcache, SPARC64_STATE_REGNUM, &state); |
| bits = extract_unsigned_integer (buf, 8); |
| switch (regnum) |
| { |
| case SPARC64_CWP_REGNUM: |
| state |= ((bits & ((1 << 5) - 1)) << 0); |
| break; |
| case SPARC64_PSTATE_REGNUM: |
| state |= ((bits & ((1 << 12) - 1)) << 8); |
| break; |
| case SPARC64_ASI_REGNUM: |
| state |= ((bits & ((1 << 8) - 1)) << 24); |
| break; |
| case SPARC64_CCR_REGNUM: |
| state |= ((bits & ((1 << 8) - 1)) << 32); |
| break; |
| } |
| regcache_raw_write_unsigned (regcache, SPARC64_STATE_REGNUM, state); |
| } |
| } |
| |
| |
| /* Return PC of first real instruction of the function starting at |
| START_PC. */ |
| |
| static CORE_ADDR |
| sparc64_skip_prologue (CORE_ADDR start_pc) |
| { |
| struct symtab_and_line sal; |
| CORE_ADDR func_start, func_end; |
| struct sparc_frame_cache cache; |
| |
| /* This is the preferred method, find the end of the prologue by |
| using the debugging information. */ |
| if (find_pc_partial_function (start_pc, NULL, &func_start, &func_end)) |
| { |
| sal = find_pc_line (func_start, 0); |
| |
| if (sal.end < func_end |
| && start_pc <= sal.end) |
| return sal.end; |
| } |
| |
| return sparc_analyze_prologue (start_pc, 0xffffffffffffffffULL, &cache); |
| } |
| |
| /* Normal frames. */ |
| |
| static struct sparc_frame_cache * |
| sparc64_frame_cache (struct frame_info *next_frame, void **this_cache) |
| { |
| return sparc_frame_cache (next_frame, this_cache); |
| } |
| |
| static void |
| sparc64_frame_this_id (struct frame_info *next_frame, void **this_cache, |
| struct frame_id *this_id) |
| { |
| struct sparc_frame_cache *cache = |
| sparc64_frame_cache (next_frame, this_cache); |
| |
| /* This marks the outermost frame. */ |
| if (cache->base == 0) |
| return; |
| |
| (*this_id) = frame_id_build (cache->base, cache->pc); |
| } |
| |
| static void |
| sparc64_frame_prev_register (struct frame_info *next_frame, void **this_cache, |
| int regnum, int *optimizedp, |
| enum lval_type *lvalp, CORE_ADDR *addrp, |
| int *realnump, void *valuep) |
| { |
| struct sparc_frame_cache *cache = |
| sparc64_frame_cache (next_frame, this_cache); |
| |
| if (regnum == SPARC64_PC_REGNUM || regnum == SPARC64_NPC_REGNUM) |
| { |
| *optimizedp = 0; |
| *lvalp = not_lval; |
| *addrp = 0; |
| *realnump = -1; |
| if (valuep) |
| { |
| CORE_ADDR pc = (regnum == SPARC64_NPC_REGNUM) ? 4 : 0; |
| |
| regnum = cache->frameless_p ? SPARC_O7_REGNUM : SPARC_I7_REGNUM; |
| pc += frame_unwind_register_unsigned (next_frame, regnum) + 8; |
| store_unsigned_integer (valuep, 8, pc); |
| } |
| return; |
| } |
| |
| /* The previous frame's `local' and `in' registers have been saved |
| in the register save area. */ |
| if (!cache->frameless_p |
| && regnum >= SPARC_L0_REGNUM && regnum <= SPARC_I7_REGNUM) |
| { |
| *optimizedp = 0; |
| *lvalp = lval_memory; |
| *addrp = cache->base + BIAS + (regnum - SPARC_L0_REGNUM) * 8; |
| *realnump = -1; |
| if (valuep) |
| { |
| struct gdbarch *gdbarch = get_frame_arch (next_frame); |
| |
| /* Read the value in from memory. */ |
| read_memory (*addrp, valuep, register_size (gdbarch, regnum)); |
| } |
| return; |
| } |
| |
| /* The previous frame's `out' registers are accessable as the |
| current frame's `in' registers. */ |
| if (!cache->frameless_p |
| && regnum >= SPARC_O0_REGNUM && regnum <= SPARC_O7_REGNUM) |
| regnum += (SPARC_I0_REGNUM - SPARC_O0_REGNUM); |
| |
| *optimizedp = 0; |
| *lvalp = lval_register; |
| *addrp = 0; |
| *realnump = regnum; |
| if (valuep) |
| frame_unwind_register (next_frame, regnum, valuep); |
| } |
| |
| static const struct frame_unwind sparc64_frame_unwind = |
| { |
| NORMAL_FRAME, |
| sparc64_frame_this_id, |
| sparc64_frame_prev_register |
| }; |
| |
| static const struct frame_unwind * |
| sparc64_frame_sniffer (struct frame_info *next_frame) |
| { |
| return &sparc64_frame_unwind; |
| } |
| |
| |
| static CORE_ADDR |
| sparc64_frame_base_address (struct frame_info *next_frame, void **this_cache) |
| { |
| struct sparc_frame_cache *cache = |
| sparc64_frame_cache (next_frame, this_cache); |
| |
| return cache->base + BIAS; |
| } |
| |
| static const struct frame_base sparc64_frame_base = |
| { |
| &sparc64_frame_unwind, |
| sparc64_frame_base_address, |
| sparc64_frame_base_address, |
| sparc64_frame_base_address |
| }; |
| |
| /* Check whether TYPE must be 16-byte aligned. */ |
| |
| static int |
| sparc64_16_byte_align_p (struct type *type) |
| { |
| if (sparc64_floating_p (type) && TYPE_LENGTH (type) == 16) |
| return 1; |
| |
| if (sparc64_structure_or_union_p (type)) |
| { |
| int i; |
| |
| for (i = 0; i < TYPE_NFIELDS (type); i++) |
| { |
| struct type *subtype = check_typedef (TYPE_FIELD_TYPE (type, i)); |
| |
| if (sparc64_16_byte_align_p (subtype)) |
| return 1; |
| } |
| } |
| |
| return 0; |
| } |
| |
| /* Store floating fields of element ELEMENT of an "parameter array" |
| that has type TYPE and is stored at BITPOS in VALBUF in the |
| apropriate registers of REGCACHE. This function can be called |
| recursively and therefore handles floating types in addition to |
| structures. */ |
| |
| static void |
| sparc64_store_floating_fields (struct regcache *regcache, struct type *type, |
| char *valbuf, int element, int bitpos) |
| { |
| gdb_assert (element < 16); |
| |
| if (sparc64_floating_p (type)) |
| { |
| int len = TYPE_LENGTH (type); |
| int regnum; |
| |
| if (len == 16) |
| { |
| gdb_assert (bitpos == 0); |
| gdb_assert ((element % 2) == 0); |
| |
| regnum = SPARC64_Q0_REGNUM + element / 2; |
| regcache_cooked_write (regcache, regnum, valbuf); |
| } |
| else if (len == 8) |
| { |
| gdb_assert (bitpos == 0 || bitpos == 64); |
| |
| regnum = SPARC64_D0_REGNUM + element + bitpos / 64; |
| regcache_cooked_write (regcache, regnum, valbuf + (bitpos / 8)); |
| } |
| else |
| { |
| gdb_assert (len == 4); |
| gdb_assert (bitpos % 32 == 0 && bitpos >= 0 && bitpos < 128); |
| |
| regnum = SPARC_F0_REGNUM + element * 2 + bitpos / 32; |
| regcache_cooked_write (regcache, regnum, valbuf + (bitpos / 8)); |
| } |
| } |
| else if (sparc64_structure_or_union_p (type)) |
| { |
| int i; |
| |
| for (i = 0; i < TYPE_NFIELDS (type); i++) |
| { |
| struct type *subtype = check_typedef (TYPE_FIELD_TYPE (type, i)); |
| int subpos = bitpos + TYPE_FIELD_BITPOS (type, i); |
| |
| sparc64_store_floating_fields (regcache, subtype, valbuf, |
| element, subpos); |
| } |
| |
| /* GCC has an interesting bug. If TYPE is a structure that has |
| a single `float' member, GCC doesn't treat it as a structure |
| at all, but rather as an ordinary `float' argument. This |
| argument will be stored in %f1, as required by the psABI. |
| However, as a member of a structure the psABI requires it to |
| be stored in %f0. This bug is present in GCC 3.3.2, but |
| probably in older releases to. To appease GCC, if a |
| structure has only a single `float' member, we store its |
| value in %f1 too (we already have stored in %f0). */ |
| if (TYPE_NFIELDS (type) == 1) |
| { |
| struct type *subtype = check_typedef (TYPE_FIELD_TYPE (type, 0)); |
| |
| if (sparc64_floating_p (subtype) && TYPE_LENGTH (subtype) == 4) |
| regcache_cooked_write (regcache, SPARC_F1_REGNUM, valbuf); |
| } |
| } |
| } |
| |
| /* Fetch floating fields from a variable of type TYPE from the |
| appropriate registers for BITPOS in REGCACHE and store it at BITPOS |
| in VALBUF. This function can be called recursively and therefore |
| handles floating types in addition to structures. */ |
| |
| static void |
| sparc64_extract_floating_fields (struct regcache *regcache, struct type *type, |
| char *valbuf, int bitpos) |
| { |
| if (sparc64_floating_p (type)) |
| { |
| int len = TYPE_LENGTH (type); |
| int regnum; |
| |
| if (len == 16) |
| { |
| gdb_assert (bitpos == 0 || bitpos == 128); |
| |
| regnum = SPARC64_Q0_REGNUM + bitpos / 128; |
| regcache_cooked_read (regcache, regnum, valbuf + (bitpos / 8)); |
| } |
| else if (len == 8) |
| { |
| gdb_assert (bitpos % 64 == 0 && bitpos >= 0 && bitpos < 256); |
| |
| regnum = SPARC64_D0_REGNUM + bitpos / 64; |
| regcache_cooked_read (regcache, regnum, valbuf + (bitpos / 8)); |
| } |
| else |
| { |
| gdb_assert (len == 4); |
| gdb_assert (bitpos % 32 == 0 && bitpos >= 0 && bitpos < 256); |
| |
| regnum = SPARC_F0_REGNUM + bitpos / 32; |
| regcache_cooked_read (regcache, regnum, valbuf + (bitpos / 8)); |
| } |
| } |
| else if (sparc64_structure_or_union_p (type)) |
| { |
| int i; |
| |
| for (i = 0; i < TYPE_NFIELDS (type); i++) |
| { |
| struct type *subtype = check_typedef (TYPE_FIELD_TYPE (type, i)); |
| int subpos = bitpos + TYPE_FIELD_BITPOS (type, i); |
| |
| sparc64_extract_floating_fields (regcache, subtype, valbuf, subpos); |
| } |
| } |
| } |
| |
| /* Store the NARGS arguments ARGS and STRUCT_ADDR (if STRUCT_RETURN is |
| non-zero) in REGCACHE and on the stack (starting from address SP). */ |
| |
| static CORE_ADDR |
| sparc64_store_arguments (struct regcache *regcache, int nargs, |
| struct value **args, CORE_ADDR sp, |
| int struct_return, CORE_ADDR struct_addr) |
| { |
| /* Number of extended words in the "parameter array". */ |
| int num_elements = 0; |
| int element = 0; |
| int i; |
| |
| /* Take BIAS into account. */ |
| sp += BIAS; |
| |
| /* First we calculate the number of extended words in the "parameter |
| array". While doing so we also convert some of the arguments. */ |
| |
| if (struct_return) |
| num_elements++; |
| |
| for (i = 0; i < nargs; i++) |
| { |
| struct type *type = value_type (args[i]); |
| int len = TYPE_LENGTH (type); |
| |
| if (sparc64_structure_or_union_p (type)) |
| { |
| /* Structure or Union arguments. */ |
| if (len <= 16) |
| { |
| if (num_elements % 2 && sparc64_16_byte_align_p (type)) |
| num_elements++; |
| num_elements += ((len + 7) / 8); |
| } |
| else |
| { |
| /* The psABI says that "Structures or unions larger than |
| sixteen bytes are copied by the caller and passed |
| indirectly; the caller will pass the address of a |
| correctly aligned structure value. This sixty-four |
| bit address will occupy one word in the parameter |
| array, and may be promoted to an %o register like any |
| other pointer value." Allocate memory for these |
| values on the stack. */ |
| sp -= len; |
| |
| /* Use 16-byte alignment for these values. That's |
| always correct, and wasting a few bytes shouldn't be |
| a problem. */ |
| sp &= ~0xf; |
| |
| write_memory (sp, value_contents (args[i]), len); |
| args[i] = value_from_pointer (lookup_pointer_type (type), sp); |
| num_elements++; |
| } |
| } |
| else if (sparc64_floating_p (type)) |
| { |
| /* Floating arguments. */ |
| |
| if (len == 16) |
| { |
| /* The psABI says that "Each quad-precision parameter |
| value will be assigned to two extended words in the |
| parameter array. */ |
| num_elements += 2; |
| |
| /* The psABI says that "Long doubles must be |
| quad-aligned, and thus a hole might be introduced |
| into the parameter array to force alignment." Skip |
| an element if necessary. */ |
| if (num_elements % 2) |
| num_elements++; |
| } |
| else |
| num_elements++; |
| } |
| else |
| { |
| /* Integral and pointer arguments. */ |
| gdb_assert (sparc64_integral_or_pointer_p (type)); |
| |
| /* The psABI says that "Each argument value of integral type |
| smaller than an extended word will be widened by the |
| caller to an extended word according to the signed-ness |
| of the argument type." */ |
| if (len < 8) |
| args[i] = value_cast (builtin_type_int64, args[i]); |
| num_elements++; |
| } |
| } |
| |
| /* Allocate the "parameter array". */ |
| sp -= num_elements * 8; |
| |
| /* The psABI says that "Every stack frame must be 16-byte aligned." */ |
| sp &= ~0xf; |
| |
| /* Now we store the arguments in to the "paramater array". Some |
| Integer or Pointer arguments and Structure or Union arguments |
| will be passed in %o registers. Some Floating arguments and |
| floating members of structures are passed in floating-point |
| registers. However, for functions with variable arguments, |
| floating arguments are stored in an %0 register, and for |
| functions without a prototype floating arguments are stored in |
| both a floating-point and an %o registers, or a floating-point |
| register and memory. To simplify the logic here we always pass |
| arguments in memory, an %o register, and a floating-point |
| register if appropriate. This should be no problem since the |
| contents of any unused memory or registers in the "parameter |
| array" are undefined. */ |
| |
| if (struct_return) |
| { |
| regcache_cooked_write_unsigned (regcache, SPARC_O0_REGNUM, struct_addr); |
| element++; |
| } |
| |
| for (i = 0; i < nargs; i++) |
| { |
| char *valbuf = value_contents (args[i]); |
| struct type *type = value_type (args[i]); |
| int len = TYPE_LENGTH (type); |
| int regnum = -1; |
| char buf[16]; |
| |
| if (sparc64_structure_or_union_p (type)) |
| { |
| /* Structure or Union arguments. */ |
| gdb_assert (len <= 16); |
| memset (buf, 0, sizeof (buf)); |
| valbuf = memcpy (buf, valbuf, len); |
| |
| if (element % 2 && sparc64_16_byte_align_p (type)) |
| element++; |
| |
| if (element < 6) |
| { |
| regnum = SPARC_O0_REGNUM + element; |
| if (len > 8 && element < 5) |
| regcache_cooked_write (regcache, regnum + 1, valbuf + 8); |
| } |
| |
| if (element < 16) |
| sparc64_store_floating_fields (regcache, type, valbuf, element, 0); |
| } |
| else if (sparc64_floating_p (type)) |
| { |
| /* Floating arguments. */ |
| if (len == 16) |
| { |
| if (element % 2) |
| element++; |
| if (element < 16) |
| regnum = SPARC64_Q0_REGNUM + element / 2; |
| } |
| else if (len == 8) |
| { |
| if (element < 16) |
| regnum = SPARC64_D0_REGNUM + element; |
| } |
| else |
| { |
| /* The psABI says "Each single-precision parameter value |
| will be assigned to one extended word in the |
| parameter array, and right-justified within that |
| word; the left half (even floatregister) is |
| undefined." Even though the psABI says that "the |
| left half is undefined", set it to zero here. */ |
| memset (buf, 0, 4); |
| memcpy (buf + 4, valbuf, 4); |
| valbuf = buf; |
| len = 8; |
| if (element < 16) |
| regnum = SPARC64_D0_REGNUM + element; |
| } |
| } |
| else |
| { |
| /* Integral and pointer arguments. */ |
| gdb_assert (len == 8); |
| if (element < 6) |
| regnum = SPARC_O0_REGNUM + element; |
| } |
| |
| if (regnum != -1) |
| { |
| regcache_cooked_write (regcache, regnum, valbuf); |
| |
| /* If we're storing the value in a floating-point register, |
| also store it in the corresponding %0 register(s). */ |
| if (regnum >= SPARC64_D0_REGNUM && regnum <= SPARC64_D10_REGNUM) |
| { |
| gdb_assert (element < 6); |
| regnum = SPARC_O0_REGNUM + element; |
| regcache_cooked_write (regcache, regnum, valbuf); |
| } |
| else if (regnum >= SPARC64_Q0_REGNUM && regnum <= SPARC64_Q8_REGNUM) |
| { |
| gdb_assert (element < 6); |
| regnum = SPARC_O0_REGNUM + element; |
| regcache_cooked_write (regcache, regnum, valbuf); |
| regcache_cooked_write (regcache, regnum + 1, valbuf + 8); |
| } |
| } |
| |
| /* Always store the argument in memory. */ |
| write_memory (sp + element * 8, valbuf, len); |
| element += ((len + 7) / 8); |
| } |
| |
| gdb_assert (element == num_elements); |
| |
| /* Take BIAS into account. */ |
| sp -= BIAS; |
| return sp; |
| } |
| |
| static CORE_ADDR |
| sparc64_push_dummy_call (struct gdbarch *gdbarch, struct value *function, |
| struct regcache *regcache, CORE_ADDR bp_addr, |
| int nargs, struct value **args, CORE_ADDR sp, |
| int struct_return, CORE_ADDR struct_addr) |
| { |
| /* Set return address. */ |
| regcache_cooked_write_unsigned (regcache, SPARC_O7_REGNUM, bp_addr - 8); |
| |
| /* Set up function arguments. */ |
| sp = sparc64_store_arguments (regcache, nargs, args, sp, |
| struct_return, struct_addr); |
| |
| /* Allocate the register save area. */ |
| sp -= 16 * 8; |
| |
| /* Stack should be 16-byte aligned at this point. */ |
| gdb_assert ((sp + BIAS) % 16 == 0); |
| |
| /* Finally, update the stack pointer. */ |
| regcache_cooked_write_unsigned (regcache, SPARC_SP_REGNUM, sp); |
| |
| return sp; |
| } |
| |
| |
| /* Extract from an array REGBUF containing the (raw) register state, a |
| function return value of TYPE, and copy that into VALBUF. */ |
| |
| static void |
| sparc64_extract_return_value (struct type *type, struct regcache *regcache, |
| void *valbuf) |
| { |
| int len = TYPE_LENGTH (type); |
| char buf[32]; |
| int i; |
| |
| if (sparc64_structure_or_union_p (type)) |
| { |
| /* Structure or Union return values. */ |
| gdb_assert (len <= 32); |
| |
| for (i = 0; i < ((len + 7) / 8); i++) |
| regcache_cooked_read (regcache, SPARC_O0_REGNUM + i, buf + i * 8); |
| if (TYPE_CODE (type) != TYPE_CODE_UNION) |
| sparc64_extract_floating_fields (regcache, type, buf, 0); |
| memcpy (valbuf, buf, len); |
| } |
| else if (sparc64_floating_p (type)) |
| { |
| /* Floating return values. */ |
| for (i = 0; i < len / 4; i++) |
| regcache_cooked_read (regcache, SPARC_F0_REGNUM + i, buf + i * 4); |
| memcpy (valbuf, buf, len); |
| } |
| else |
| { |
| /* Integral and pointer return values. */ |
| gdb_assert (sparc64_integral_or_pointer_p (type)); |
| |
| /* Just stripping off any unused bytes should preserve the |
| signed-ness just fine. */ |
| regcache_cooked_read (regcache, SPARC_O0_REGNUM, buf); |
| memcpy (valbuf, buf + 8 - len, len); |
| } |
| } |
| |
| /* Write into the appropriate registers a function return value stored |
| in VALBUF of type TYPE. */ |
| |
| static void |
| sparc64_store_return_value (struct type *type, struct regcache *regcache, |
| const void *valbuf) |
| { |
| int len = TYPE_LENGTH (type); |
| char buf[16]; |
| int i; |
| |
| if (sparc64_structure_or_union_p (type)) |
| { |
| /* Structure or Union return values. */ |
| gdb_assert (len <= 32); |
| |
| /* Simplify matters by storing the complete value (including |
| floating members) into %o0 and %o1. Floating members are |
| also store in the appropriate floating-point registers. */ |
| memset (buf, 0, sizeof (buf)); |
| memcpy (buf, valbuf, len); |
| for (i = 0; i < ((len + 7) / 8); i++) |
| regcache_cooked_write (regcache, SPARC_O0_REGNUM + i, buf + i * 8); |
| if (TYPE_CODE (type) != TYPE_CODE_UNION) |
| sparc64_store_floating_fields (regcache, type, buf, 0, 0); |
| } |
| else if (sparc64_floating_p (type)) |
| { |
| /* Floating return values. */ |
| memcpy (buf, valbuf, len); |
| for (i = 0; i < len / 4; i++) |
| regcache_cooked_write (regcache, SPARC_F0_REGNUM + i, buf + i * 4); |
| } |
| else |
| { |
| /* Integral and pointer return values. */ |
| gdb_assert (sparc64_integral_or_pointer_p (type)); |
| |
| /* ??? Do we need to do any sign-extension here? */ |
| memset (buf, 0, 8); |
| memcpy (buf + 8 - len, valbuf, len); |
| regcache_cooked_write (regcache, SPARC_O0_REGNUM, buf); |
| } |
| } |
| |
| static enum return_value_convention |
| sparc64_return_value (struct gdbarch *gdbarch, struct type *type, |
| struct regcache *regcache, void *readbuf, |
| const void *writebuf) |
| { |
| if (TYPE_LENGTH (type) > 32) |
| return RETURN_VALUE_STRUCT_CONVENTION; |
| |
| if (readbuf) |
| sparc64_extract_return_value (type, regcache, readbuf); |
| if (writebuf) |
| sparc64_store_return_value (type, regcache, writebuf); |
| |
| return RETURN_VALUE_REGISTER_CONVENTION; |
| } |
| |
| |
| void |
| sparc64_init_abi (struct gdbarch_info info, struct gdbarch *gdbarch) |
| { |
| struct gdbarch_tdep *tdep = gdbarch_tdep (gdbarch); |
| |
| tdep->pc_regnum = SPARC64_PC_REGNUM; |
| tdep->npc_regnum = SPARC64_NPC_REGNUM; |
| |
| /* This is what all the fuss is about. */ |
| set_gdbarch_long_bit (gdbarch, 64); |
| set_gdbarch_long_long_bit (gdbarch, 64); |
| set_gdbarch_ptr_bit (gdbarch, 64); |
| |
| set_gdbarch_num_regs (gdbarch, SPARC64_NUM_REGS); |
| set_gdbarch_register_name (gdbarch, sparc64_register_name); |
| set_gdbarch_register_type (gdbarch, sparc64_register_type); |
| set_gdbarch_num_pseudo_regs (gdbarch, SPARC64_NUM_PSEUDO_REGS); |
| set_gdbarch_pseudo_register_read (gdbarch, sparc64_pseudo_register_read); |
| set_gdbarch_pseudo_register_write (gdbarch, sparc64_pseudo_register_write); |
| |
| /* Register numbers of various important registers. */ |
| set_gdbarch_pc_regnum (gdbarch, SPARC64_PC_REGNUM); /* %pc */ |
| |
| /* Call dummy code. */ |
| set_gdbarch_call_dummy_location (gdbarch, AT_ENTRY_POINT); |
| set_gdbarch_push_dummy_code (gdbarch, NULL); |
| set_gdbarch_push_dummy_call (gdbarch, sparc64_push_dummy_call); |
| |
| set_gdbarch_return_value (gdbarch, sparc64_return_value); |
| set_gdbarch_stabs_argument_has_addr |
| (gdbarch, default_stabs_argument_has_addr); |
| |
| set_gdbarch_skip_prologue (gdbarch, sparc64_skip_prologue); |
| |
| frame_unwind_append_sniffer (gdbarch, sparc64_frame_sniffer); |
| frame_base_set_default (gdbarch, &sparc64_frame_base); |
| } |
| |
| |
| /* Helper functions for dealing with register sets. */ |
| |
| #define TSTATE_CWP 0x000000000000001fULL |
| #define TSTATE_ICC 0x0000000f00000000ULL |
| #define TSTATE_XCC 0x000000f000000000ULL |
| |
| #define PSR_S 0x00000080 |
| #define PSR_ICC 0x00f00000 |
| #define PSR_VERS 0x0f000000 |
| #define PSR_IMPL 0xf0000000 |
| #define PSR_V8PLUS 0xff000000 |
| #define PSR_XCC 0x000f0000 |
| |
| void |
| sparc64_supply_gregset (const struct sparc_gregset *gregset, |
| struct regcache *regcache, |
| int regnum, const void *gregs) |
| { |
| int sparc32 = (gdbarch_ptr_bit (current_gdbarch) == 32); |
| const char *regs = gregs; |
| int i; |
| |
| if (sparc32) |
| { |
| if (regnum == SPARC32_PSR_REGNUM || regnum == -1) |
| { |
| int offset = gregset->r_tstate_offset; |
| ULONGEST tstate, psr; |
| char buf[4]; |
| |
| tstate = extract_unsigned_integer (regs + offset, 8); |
| psr = ((tstate & TSTATE_CWP) | PSR_S | ((tstate & TSTATE_ICC) >> 12) |
| | ((tstate & TSTATE_XCC) >> 20) | PSR_V8PLUS); |
| store_unsigned_integer (buf, 4, psr); |
| regcache_raw_supply (regcache, SPARC32_PSR_REGNUM, buf); |
| } |
| |
| if (regnum == SPARC32_PC_REGNUM || regnum == -1) |
| regcache_raw_supply (regcache, SPARC32_PC_REGNUM, |
| regs + gregset->r_pc_offset + 4); |
| |
| if (regnum == SPARC32_NPC_REGNUM || regnum == -1) |
| regcache_raw_supply (regcache, SPARC32_NPC_REGNUM, |
| regs + gregset->r_npc_offset + 4); |
| |
| if (regnum == SPARC32_Y_REGNUM || regnum == -1) |
| { |
| int offset = gregset->r_y_offset + 8 - gregset->r_y_size; |
| regcache_raw_supply (regcache, SPARC32_Y_REGNUM, regs + offset); |
| } |
| } |
| else |
| { |
| if (regnum == SPARC64_STATE_REGNUM || regnum == -1) |
| regcache_raw_supply (regcache, SPARC64_STATE_REGNUM, |
| regs + gregset->r_tstate_offset); |
| |
| if (regnum == SPARC64_PC_REGNUM || regnum == -1) |
| regcache_raw_supply (regcache, SPARC64_PC_REGNUM, |
| regs + gregset->r_pc_offset); |
| |
| if (regnum == SPARC64_NPC_REGNUM || regnum == -1) |
| regcache_raw_supply (regcache, SPARC64_NPC_REGNUM, |
| regs + gregset->r_npc_offset); |
| |
| if (regnum == SPARC64_Y_REGNUM || regnum == -1) |
| { |
| char buf[8]; |
| |
| memset (buf, 0, 8); |
| memcpy (buf + 8 - gregset->r_y_size, |
| regs + gregset->r_y_offset, gregset->r_y_size); |
| regcache_raw_supply (regcache, SPARC64_Y_REGNUM, buf); |
| } |
| |
| if ((regnum == SPARC64_FPRS_REGNUM || regnum == -1) |
| && gregset->r_fprs_offset != -1) |
| regcache_raw_supply (regcache, SPARC64_FPRS_REGNUM, |
| regs + gregset->r_fprs_offset); |
| } |
| |
| if (regnum == SPARC_G0_REGNUM || regnum == -1) |
| regcache_raw_supply (regcache, SPARC_G0_REGNUM, NULL); |
| |
| if ((regnum >= SPARC_G1_REGNUM && regnum <= SPARC_O7_REGNUM) || regnum == -1) |
| { |
| int offset = gregset->r_g1_offset; |
| |
| if (sparc32) |
| offset += 4; |
| |
| for (i = SPARC_G1_REGNUM; i <= SPARC_O7_REGNUM; i++) |
| { |
| if (regnum == i || regnum == -1) |
| regcache_raw_supply (regcache, i, regs + offset); |
| offset += 8; |
| } |
| } |
| |
| if ((regnum >= SPARC_L0_REGNUM && regnum <= SPARC_I7_REGNUM) || regnum == -1) |
| { |
| /* Not all of the register set variants include Locals and |
| Inputs. For those that don't, we read them off the stack. */ |
| if (gregset->r_l0_offset == -1) |
| { |
| ULONGEST sp; |
| |
| regcache_cooked_read_unsigned (regcache, SPARC_SP_REGNUM, &sp); |
| sparc_supply_rwindow (regcache, sp, regnum); |
| } |
| else |
| { |
| int offset = gregset->r_l0_offset; |
| |
| if (sparc32) |
| offset += 4; |
| |
| for (i = SPARC_L0_REGNUM; i <= SPARC_I7_REGNUM; i++) |
| { |
| if (regnum == i || regnum == -1) |
| regcache_raw_supply (regcache, i, regs + offset); |
| offset += 8; |
| } |
| } |
| } |
| } |
| |
| void |
| sparc64_collect_gregset (const struct sparc_gregset *gregset, |
| const struct regcache *regcache, |
| int regnum, void *gregs) |
| { |
| int sparc32 = (gdbarch_ptr_bit (current_gdbarch) == 32); |
| char *regs = gregs; |
| int i; |
| |
| if (sparc32) |
| { |
| if (regnum == SPARC32_PSR_REGNUM || regnum == -1) |
| { |
| int offset = gregset->r_tstate_offset; |
| ULONGEST tstate, psr; |
| char buf[8]; |
| |
| tstate = extract_unsigned_integer (regs + offset, 8); |
| regcache_raw_collect (regcache, SPARC32_PSR_REGNUM, buf); |
| psr = extract_unsigned_integer (buf, 4); |
| tstate |= (psr & PSR_ICC) << 12; |
| if ((psr & (PSR_VERS | PSR_IMPL)) == PSR_V8PLUS) |
| tstate |= (psr & PSR_XCC) << 20; |
| store_unsigned_integer (buf, 8, tstate); |
| memcpy (regs + offset, buf, 8); |
| } |
| |
| if (regnum == SPARC32_PC_REGNUM || regnum == -1) |
| regcache_raw_collect (regcache, SPARC32_PC_REGNUM, |
| regs + gregset->r_pc_offset + 4); |
| |
| if (regnum == SPARC32_NPC_REGNUM || regnum == -1) |
| regcache_raw_collect (regcache, SPARC32_NPC_REGNUM, |
| regs + gregset->r_npc_offset + 4); |
| |
| if (regnum == SPARC32_Y_REGNUM || regnum == -1) |
| { |
| int offset = gregset->r_y_offset + 8 - gregset->r_y_size; |
| regcache_raw_collect (regcache, SPARC32_Y_REGNUM, regs + offset); |
| } |
| } |
| else |
| { |
| if (regnum == SPARC64_STATE_REGNUM || regnum == -1) |
| regcache_raw_collect (regcache, SPARC64_STATE_REGNUM, |
| regs + gregset->r_tstate_offset); |
| |
| if (regnum == SPARC64_PC_REGNUM || regnum == -1) |
| regcache_raw_collect (regcache, SPARC64_PC_REGNUM, |
| regs + gregset->r_pc_offset); |
| |
| if (regnum == SPARC64_NPC_REGNUM || regnum == -1) |
| regcache_raw_collect (regcache, SPARC64_NPC_REGNUM, |
| regs + gregset->r_npc_offset); |
| |
| if (regnum == SPARC64_Y_REGNUM || regnum == -1) |
| { |
| char buf[8]; |
| |
| regcache_raw_collect (regcache, SPARC64_Y_REGNUM, buf); |
| memcpy (regs + gregset->r_y_offset, |
| buf + 8 - gregset->r_y_size, gregset->r_y_size); |
| } |
| |
| if ((regnum == SPARC64_FPRS_REGNUM || regnum == -1) |
| && gregset->r_fprs_offset != -1) |
| regcache_raw_collect (regcache, SPARC64_FPRS_REGNUM, |
| regs + gregset->r_fprs_offset); |
| |
| } |
| |
| if ((regnum >= SPARC_G1_REGNUM && regnum <= SPARC_O7_REGNUM) || regnum == -1) |
| { |
| int offset = gregset->r_g1_offset; |
| |
| if (sparc32) |
| offset += 4; |
| |
| /* %g0 is always zero. */ |
| for (i = SPARC_G1_REGNUM; i <= SPARC_O7_REGNUM; i++) |
| { |
| if (regnum == i || regnum == -1) |
| regcache_raw_collect (regcache, i, regs + offset); |
| offset += 8; |
| } |
| } |
| |
| if ((regnum >= SPARC_L0_REGNUM && regnum <= SPARC_I7_REGNUM) || regnum == -1) |
| { |
| /* Not all of the register set variants include Locals and |
| Inputs. For those that don't, we read them off the stack. */ |
| if (gregset->r_l0_offset != -1) |
| { |
| int offset = gregset->r_l0_offset; |
| |
| if (sparc32) |
| offset += 4; |
| |
| for (i = SPARC_L0_REGNUM; i <= SPARC_I7_REGNUM; i++) |
| { |
| if (regnum == i || regnum == -1) |
| regcache_raw_collect (regcache, i, regs + offset); |
| offset += 8; |
| } |
| } |
| } |
| } |
| |
| void |
| sparc64_supply_fpregset (struct regcache *regcache, |
| int regnum, const void *fpregs) |
| { |
| int sparc32 = (gdbarch_ptr_bit (current_gdbarch) == 32); |
| const char *regs = fpregs; |
| int i; |
| |
| for (i = 0; i < 32; i++) |
| { |
| if (regnum == (SPARC_F0_REGNUM + i) || regnum == -1) |
| regcache_raw_supply (regcache, SPARC_F0_REGNUM + i, regs + (i * 4)); |
| } |
| |
| if (sparc32) |
| { |
| if (regnum == SPARC32_FSR_REGNUM || regnum == -1) |
| regcache_raw_supply (regcache, SPARC32_FSR_REGNUM, |
| regs + (32 * 4) + (16 * 8) + 4); |
| } |
| else |
| { |
| for (i = 0; i < 16; i++) |
| { |
| if (regnum == (SPARC64_F32_REGNUM + i) || regnum == -1) |
| regcache_raw_supply (regcache, SPARC64_F32_REGNUM + i, |
| regs + (32 * 4) + (i * 8)); |
| } |
| |
| if (regnum == SPARC64_FSR_REGNUM || regnum == -1) |
| regcache_raw_supply (regcache, SPARC64_FSR_REGNUM, |
| regs + (32 * 4) + (16 * 8)); |
| } |
| } |
| |
| void |
| sparc64_collect_fpregset (const struct regcache *regcache, |
| int regnum, void *fpregs) |
| { |
| int sparc32 = (gdbarch_ptr_bit (current_gdbarch) == 32); |
| char *regs = fpregs; |
| int i; |
| |
| for (i = 0; i < 32; i++) |
| { |
| if (regnum == (SPARC_F0_REGNUM + i) || regnum == -1) |
| regcache_raw_collect (regcache, SPARC_F0_REGNUM + i, regs + (i * 4)); |
| } |
| |
| if (sparc32) |
| { |
| if (regnum == SPARC32_FSR_REGNUM || regnum == -1) |
| regcache_raw_collect (regcache, SPARC32_FSR_REGNUM, |
| regs + (32 * 4) + (16 * 8) + 4); |
| } |
| else |
| { |
| for (i = 0; i < 16; i++) |
| { |
| if (regnum == (SPARC64_F32_REGNUM + i) || regnum == -1) |
| regcache_raw_collect (regcache, SPARC64_F32_REGNUM + i, |
| regs + (32 * 4) + (i * 8)); |
| } |
| |
| if (regnum == SPARC64_FSR_REGNUM || regnum == -1) |
| regcache_raw_collect (regcache, SPARC64_FSR_REGNUM, |
| regs + (32 * 4) + (16 * 8)); |
| } |
| } |