diff options
Diffstat (limited to 'gdb/x86-64-tdep.c')
| -rw-r--r-- | gdb/x86-64-tdep.c | 999 |
1 files changed, 0 insertions, 999 deletions
diff --git a/gdb/x86-64-tdep.c b/gdb/x86-64-tdep.c deleted file mode 100644 index f02f2b65bb3..00000000000 --- a/gdb/x86-64-tdep.c +++ /dev/null @@ -1,999 +0,0 @@ -/* Target-dependent code for the x86-64 for GDB, the GNU debugger. - Copyright 2001 - Free Software Foundation, Inc. - Contributed by Jiri Smid, SuSE Labs. - - 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 "inferior.h" -#include "gdbcore.h" -#include "gdbcmd.h" -#include "arch-utils.h" -#include "regcache.h" -#include "symfile.h" -#include "x86-64-tdep.h" -#include "dwarf2cfi.h" -#include "value.h" - - -/* Register numbers of various important registers. */ -#define RAX_REGNUM 0 -#define RDX_REGNUM 1 -#define RDI_REGNUM 5 -#define EFLAGS_REGNUM 17 -#define XMM1_REGNUM 35 - -/* x86_64_register_raw_size_table[i] is the number of bytes of storage in - GDB's register array occupied by register i. */ -int x86_64_register_raw_size_table[X86_64_NUM_REGS] = { - 8, 8, 8, 8, - 8, 8, 8, 8, - 8, 8, 8, 8, - 8, 8, 8, 8, - 8, 4, - 10, 10, 10, 10, - 10, 10, 10, 10, - 4, 4, 4, 4, - 4, 4, 4, 4, - 16, 16, 16, 16, - 16, 16, 16, 16, - 16, 16, 16, 16, - 16, 16, 16, 16, - 4 -}; - -/* Number of bytes of storage in the actual machine representation for - register REGNO. */ -int -x86_64_register_raw_size (int regno) -{ - return x86_64_register_raw_size_table[regno]; -} - -/* x86_64_register_byte_table[i] is the offset into the register file of the - start of register number i. We initialize this from - x86_64_register_raw_size_table. */ -int x86_64_register_byte_table[X86_64_NUM_REGS]; - -/* Index within `registers' of the first byte of the space for register REGNO. */ -int -x86_64_register_byte (int regno) -{ - return x86_64_register_byte_table[regno]; -} - -/* Return the GDB type object for the "standard" data type of data in - register N. */ -static struct type * -x86_64_register_virtual_type (int regno) -{ - if (regno == PC_REGNUM || regno == SP_REGNUM) - return lookup_pointer_type (builtin_type_void); - if (IS_FP_REGNUM (regno)) - return builtin_type_long_double; - if (IS_SSE_REGNUM (regno)) - return builtin_type_v4sf; - if (IS_FPU_CTRL_REGNUM (regno) || regno == MXCSR_REGNUM - || regno == EFLAGS_REGNUM) - return builtin_type_int; - return builtin_type_long; -} - -/* x86_64_register_convertible is true if register N's virtual format is - different from its raw format. Note that this definition assumes - that the host supports IEEE 32-bit floats, since it doesn't say - that SSE registers need conversion. Even if we can't find a - counterexample, this is still sloppy. */ -int -x86_64_register_convertible (int regno) -{ - return IS_FP_REGNUM (regno); -} - -/* Convert data from raw format for register REGNUM in buffer FROM to - virtual format with type TYPE in buffer TO. In principle both - formats are identical except that the virtual format has two extra - bytes appended that aren't used. We set these to zero. */ -void -x86_64_register_convert_to_virtual (int regnum, struct type *type, - char *from, char *to) -{ -/* Copy straight over, but take care of the padding. */ - memcpy (to, from, FPU_REG_RAW_SIZE); - memset (to + FPU_REG_RAW_SIZE, 0, TYPE_LENGTH (type) - FPU_REG_RAW_SIZE); -} - -/* Convert data from virtual format with type TYPE in buffer FROM to - raw format for register REGNUM in buffer TO. Simply omit the two - unused bytes. */ - -void -x86_64_register_convert_to_raw (struct type *type, int regnum, - char *from, char *to) -{ - memcpy (to, from, FPU_REG_RAW_SIZE); -} - - -/* This is the variable that is set with "set disassembly-flavour", and - its legitimate values. */ -static const char att_flavour[] = "att"; -static const char intel_flavour[] = "intel"; -static const char *valid_flavours[] = { - att_flavour, - intel_flavour, - NULL -}; -static const char *disassembly_flavour = att_flavour; - -static CORE_ADDR -x86_64_push_return_address (CORE_ADDR pc, CORE_ADDR sp) -{ - char buf[8]; - - store_unsigned_integer (buf, 8, CALL_DUMMY_ADDRESS ()); - - write_memory (sp - 8, buf, 8); - return sp - 8; -} - -void -x86_64_pop_frame (void) -{ - generic_pop_current_frame (cfi_pop_frame); -} - - -/* The returning of values is done according to the special algorithm. - Some types are returned in registers an some (big structures) in memory. - See ABI for details. - */ - -#define MAX_CLASSES 4 - -enum x86_64_reg_class -{ - X86_64_NO_CLASS, - X86_64_INTEGER_CLASS, - X86_64_INTEGERSI_CLASS, - X86_64_SSE_CLASS, - X86_64_SSESF_CLASS, - X86_64_SSEDF_CLASS, - X86_64_SSEUP_CLASS, - X86_64_X87_CLASS, - X86_64_X87UP_CLASS, - X86_64_MEMORY_CLASS -}; - -/* Return the union class of CLASS1 and CLASS2. - See the x86-64 ABI for details. */ - -static enum x86_64_reg_class -merge_classes (enum x86_64_reg_class class1, enum x86_64_reg_class class2) -{ - /* Rule #1: If both classes are equal, this is the resulting class. */ - if (class1 == class2) - return class1; - - /* Rule #2: If one of the classes is NO_CLASS, the resulting class is - the other class. */ - if (class1 == X86_64_NO_CLASS) - return class2; - if (class2 == X86_64_NO_CLASS) - return class1; - - /* Rule #3: If one of the classes is MEMORY, the result is MEMORY. */ - if (class1 == X86_64_MEMORY_CLASS || class2 == X86_64_MEMORY_CLASS) - return X86_64_MEMORY_CLASS; - - /* Rule #4: If one of the classes is INTEGER, the result is INTEGER. */ - if ((class1 == X86_64_INTEGERSI_CLASS && class2 == X86_64_SSESF_CLASS) - || (class2 == X86_64_INTEGERSI_CLASS && class1 == X86_64_SSESF_CLASS)) - return X86_64_INTEGERSI_CLASS; - if (class1 == X86_64_INTEGER_CLASS || class1 == X86_64_INTEGERSI_CLASS - || class2 == X86_64_INTEGER_CLASS || class2 == X86_64_INTEGERSI_CLASS) - return X86_64_INTEGER_CLASS; - - /* Rule #5: If one of the classes is X87 or X87UP class, MEMORY is used. */ - if (class1 == X86_64_X87_CLASS || class1 == X86_64_X87UP_CLASS - || class2 == X86_64_X87_CLASS || class2 == X86_64_X87UP_CLASS) - return X86_64_MEMORY_CLASS; - - /* Rule #6: Otherwise class SSE is used. */ - return X86_64_SSE_CLASS; -} - - -/* Classify the argument type. - CLASSES will be filled by the register class used to pass each word - of the operand. The number of words is returned. In case the parameter - should be passed in memory, 0 is returned. As a special case for zero - sized containers, classes[0] will be NO_CLASS and 1 is returned. - - See the x86-64 PS ABI for details. -*/ - -static int -classify_argument (struct type *type, - enum x86_64_reg_class classes[MAX_CLASSES], int bit_offset) -{ - int bytes = TYPE_LENGTH (type); - int words = (bytes + 8 - 1) / 8; - - switch (TYPE_CODE (type)) - { - case TYPE_CODE_ARRAY: - case TYPE_CODE_STRUCT: - case TYPE_CODE_UNION: - { - int i; - enum x86_64_reg_class subclasses[MAX_CLASSES]; - - /* On x86-64 we pass structures larger than 16 bytes on the stack. */ - if (bytes > 16) - return 0; - - for (i = 0; i < words; i++) - classes[i] = X86_64_NO_CLASS; - - /* Zero sized arrays or structures are NO_CLASS. We return 0 to - signalize memory class, so handle it as special case. */ - if (!words) - { - classes[0] = X86_64_NO_CLASS; - return 1; - } - switch (TYPE_CODE (type)) - { - case TYPE_CODE_STRUCT: - { - int j; - for (j = 0; j < type->nfields; ++j) - { - int num = classify_argument (type->fields[j].type, - subclasses, - (type->fields[j].loc.bitpos - + bit_offset) % 256); - if (!num) - return 0; - for (i = 0; i < num; i++) - { - int pos = - (type->fields[j].loc.bitpos + bit_offset) / 8 / 8; - classes[i + pos] = - merge_classes (subclasses[i], classes[i + pos]); - } - } - } - break; - case TYPE_CODE_ARRAY: - { - int num; - - num = classify_argument (type->target_type, - subclasses, bit_offset); - if (!num) - return 0; - - /* The partial classes are now full classes. */ - if (subclasses[0] == X86_64_SSESF_CLASS && bytes != 4) - subclasses[0] = X86_64_SSE_CLASS; - if (subclasses[0] == X86_64_INTEGERSI_CLASS && bytes != 4) - subclasses[0] = X86_64_INTEGER_CLASS; - - for (i = 0; i < words; i++) - classes[i] = subclasses[i % num]; - } - break; - case TYPE_CODE_UNION: - { - int j; - { - for (j = 0; j < type->nfields; ++j) - { - int num; - num = classify_argument (type->fields[j].type, - subclasses, bit_offset); - if (!num) - return 0; - for (i = 0; i < num; i++) - classes[i] = merge_classes (subclasses[i], classes[i]); - } - } - } - break; - } - /* Final merger cleanup. */ - for (i = 0; i < words; i++) - { - /* If one class is MEMORY, everything should be passed in - memory. */ - if (classes[i] == X86_64_MEMORY_CLASS) - return 0; - - /* The X86_64_SSEUP_CLASS should be always preceeded by - X86_64_SSE_CLASS. */ - if (classes[i] == X86_64_SSEUP_CLASS - && (i == 0 || classes[i - 1] != X86_64_SSE_CLASS)) - classes[i] = X86_64_SSE_CLASS; - - /* X86_64_X87UP_CLASS should be preceeded by X86_64_X87_CLASS. */ - if (classes[i] == X86_64_X87UP_CLASS - && (i == 0 || classes[i - 1] != X86_64_X87_CLASS)) - classes[i] = X86_64_SSE_CLASS; - } - return words; - } - break; - case TYPE_CODE_FLT: - switch (bytes) - { - case 4: - if (!(bit_offset % 64)) - classes[0] = X86_64_SSESF_CLASS; - else - classes[0] = X86_64_SSE_CLASS; - return 1; - case 8: - classes[0] = X86_64_SSEDF_CLASS; - return 1; - case 16: - classes[0] = X86_64_X87_CLASS; - classes[1] = X86_64_X87UP_CLASS; - return 2; - } - break; - case TYPE_CODE_INT: - case TYPE_CODE_PTR: - switch (bytes) - { - case 1: - case 2: - case 4: - case 8: - if (bytes * 8 + bit_offset <= 32) - classes[0] = X86_64_INTEGERSI_CLASS; - else - classes[0] = X86_64_INTEGER_CLASS; - return 1; - case 16: - classes[0] = classes[1] = X86_64_INTEGER_CLASS; - return 2; - default: - break; - } - case TYPE_CODE_VOID: - return 0; - } - internal_error (__FILE__, __LINE__, "classify_argument: unknown argument type"); -} - -/* Examine the argument and return set number of register required in each - class. Return 0 ifif parameter should be passed in memory. */ - -static int -examine_argument (enum x86_64_reg_class classes[MAX_CLASSES], - int n, int *int_nregs, int *sse_nregs) -{ - *int_nregs = 0; - *sse_nregs = 0; - if (!n) - return 0; - for (n--; n >= 0; n--) - switch (classes[n]) - { - case X86_64_INTEGER_CLASS: - case X86_64_INTEGERSI_CLASS: - (*int_nregs)++; - break; - case X86_64_SSE_CLASS: - case X86_64_SSESF_CLASS: - case X86_64_SSEDF_CLASS: - (*sse_nregs)++; - break; - case X86_64_NO_CLASS: - case X86_64_SSEUP_CLASS: - case X86_64_X87_CLASS: - case X86_64_X87UP_CLASS: - break; - case X86_64_MEMORY_CLASS: - internal_error (__FILE__, __LINE__, "examine_argument: unexpected memory class"); - } - return 1; -} - -#define RET_INT_REGS 2 -#define RET_SSE_REGS 2 - -/* Check if the structure in value_type is returned in registers or in - memory. If this function returns 1, gdb will call STORE_STRUCT_RETURN and - EXTRACT_STRUCT_VALUE_ADDRESS else STORE_RETURN_VALUE and EXTRACT_RETURN_VALUE - will be used. */ -int -x86_64_use_struct_convention (int gcc_p, struct type *value_type) -{ - enum x86_64_reg_class class[MAX_CLASSES]; - int n = classify_argument (value_type, class, 0); - int needed_intregs; - int needed_sseregs; - - return (!n || - !examine_argument (class, n, &needed_intregs, &needed_sseregs) || - needed_intregs > RET_INT_REGS || needed_sseregs > RET_SSE_REGS); -} - - -/* Extract from an array REGBUF containing the (raw) register state, a - function return value of TYPE, and copy that, in virtual format, - into VALBUF. */ - -void -x86_64_extract_return_value (struct type *type, char *regbuf, char *valbuf) -{ - enum x86_64_reg_class class[MAX_CLASSES]; - int n = classify_argument (type, class, 0); - int needed_intregs; - int needed_sseregs; - int intreg = 0; - int ssereg = 0; - int offset = 0; - int ret_int_r[RET_INT_REGS] = { RAX_REGNUM, RDX_REGNUM }; - int ret_sse_r[RET_SSE_REGS] = { XMM0_REGNUM, XMM1_REGNUM }; - - if (!n || - !examine_argument (class, n, &needed_intregs, &needed_sseregs) || - needed_intregs > RET_INT_REGS || needed_sseregs > RET_SSE_REGS) - { /* memory class */ - CORE_ADDR addr; - memcpy (&addr, regbuf, REGISTER_RAW_SIZE (RAX_REGNUM)); - read_memory (addr, valbuf, TYPE_LENGTH (type)); - return; - } - else - { - int i; - for (i = 0; i < n; i++) - { - switch (class[i]) - { - case X86_64_NO_CLASS: - break; - case X86_64_INTEGER_CLASS: - memcpy (valbuf + offset, - regbuf + REGISTER_BYTE (ret_int_r[(intreg + 1) / 2]), - 8); - offset += 8; - intreg += 2; - break; - case X86_64_INTEGERSI_CLASS: - memcpy (valbuf + offset, - regbuf + REGISTER_BYTE (ret_int_r[intreg / 2]), 4); - offset += 8; - intreg++; - break; - case X86_64_SSEDF_CLASS: - case X86_64_SSESF_CLASS: - case X86_64_SSE_CLASS: - memcpy (valbuf + offset, - regbuf + REGISTER_BYTE (ret_sse_r[(ssereg + 1) / 2]), - 8); - offset += 8; - ssereg += 2; - break; - case X86_64_SSEUP_CLASS: - memcpy (valbuf + offset + 8, - regbuf + REGISTER_BYTE (ret_sse_r[ssereg / 2]), 8); - offset += 8; - ssereg++; - break; - case X86_64_X87_CLASS: - memcpy (valbuf + offset, regbuf + REGISTER_BYTE (FP0_REGNUM), - 8); - offset += 8; - break; - case X86_64_X87UP_CLASS: - memcpy (valbuf + offset, - regbuf + REGISTER_BYTE (FP0_REGNUM) + 8, 8); - offset += 8; - break; - case X86_64_MEMORY_CLASS: - default: - internal_error (__FILE__, __LINE__, - "Unexpected argument class"); - } - } - } -} - -/* Handled by unwind informations. */ -static void -x86_64_frame_init_saved_regs (struct frame_info *fi) -{ -} - -#define INT_REGS 6 -#define SSE_REGS 16 - -/* Push onto the stack the specified value VALUE. Pad it correctly for - it to be an argument to a function. */ - -static CORE_ADDR -value_push (register CORE_ADDR sp, struct value *arg) -{ - register int len = TYPE_LENGTH (VALUE_ENCLOSING_TYPE (arg)); - register int container_len = len; - - /* How big is the container we're going to put this value in? */ - if (PARM_BOUNDARY) - container_len = ((len + PARM_BOUNDARY / TARGET_CHAR_BIT - 1) - & ~(PARM_BOUNDARY / TARGET_CHAR_BIT - 1)); - - sp -= container_len; - write_memory (sp, VALUE_CONTENTS_ALL (arg), len); - - return sp; -} - -CORE_ADDR -x86_64_push_arguments (int nargs, struct value **args, CORE_ADDR sp, - int struct_return, CORE_ADDR struct_addr) -{ - int intreg = 0; - int ssereg = 0; - int i; - static int int_parameter_registers[INT_REGS] = {5 /*RDI*/, 4 /*RSI*/, - 1 /*RDX*/, 2 /*RCX*/, - 8 /*R8 */, 9 /*R9 */}; - /* XMM0 - XMM15 */ - static int sse_parameter_registers[SSE_REGS] = {34, 35, 36, 37, - 38, 39, 40, 41, - 42, 43, 44, 45, - 46, 47, 48, 49}; - for (i = 0; i < nargs; i++) - { - enum x86_64_reg_class class[MAX_CLASSES]; - int n = classify_argument (args[i]->type, class, 0); - int needed_intregs; - int needed_sseregs; - - if (!n || - !examine_argument (class, n, &needed_intregs, &needed_sseregs) - || intreg + needed_intregs > INT_REGS - || ssereg + needed_sseregs > SSE_REGS) - { /* memory class */ - sp = value_push (sp, args[i]); - } - else - { - int j; - for (j = 0; j < n; j++) - { - int offset = 0; - switch (class[j]) - { - case X86_64_NO_CLASS: - break; - case X86_64_INTEGER_CLASS: - write_register_gen (int_parameter_registers[(intreg + 1) / 2], - VALUE_CONTENTS_ALL (args[i]) + offset); - offset += 8; - intreg += 2; - break; - case X86_64_INTEGERSI_CLASS: - write_register_gen (int_parameter_registers[intreg / 2], - VALUE_CONTENTS_ALL (args[i]) + offset); - offset += 8; - intreg++; - break; - case X86_64_SSEDF_CLASS: - case X86_64_SSESF_CLASS: - case X86_64_SSE_CLASS: - write_register_gen (sse_parameter_registers[(ssereg + 1) / 2], - VALUE_CONTENTS_ALL (args[i]) + offset); - offset += 8; - ssereg += 2; - break; - case X86_64_SSEUP_CLASS: - write_register_gen (sse_parameter_registers[ssereg / 2], - VALUE_CONTENTS_ALL (args[i]) + offset); - offset += 8; - ssereg++; - break; - case X86_64_X87_CLASS: - case X86_64_X87UP_CLASS: - case X86_64_MEMORY_CLASS: - sp = value_push (sp, args[i]); - break; - default: - internal_error (__FILE__, __LINE__, - "Unexpected argument class"); - } - intreg += intreg % 2; - ssereg += ssereg % 2; - } - } - } - return sp; -} - -/* Write into the appropriate registers a function return value stored - in VALBUF of type TYPE, given in virtual format. */ -void -x86_64_store_return_value (struct type *type, char *valbuf) -{ - int len = TYPE_LENGTH (type); - - if (TYPE_CODE_FLT == TYPE_CODE (type)) - { - /* Floating-point return values can be found in %st(0). */ - if (len == TARGET_LONG_DOUBLE_BIT / TARGET_CHAR_BIT - && TARGET_LONG_DOUBLE_FORMAT == &floatformat_i387_ext) - { - /* Copy straight over. */ - write_register_bytes (REGISTER_BYTE (FP0_REGNUM), valbuf, - FPU_REG_RAW_SIZE); - } - else - { - char buf[FPU_REG_RAW_SIZE]; - DOUBLEST val; - - /* Convert the value found in VALBUF to the extended - floating point format used by the FPU. This is probably - not exactly how it would happen on the target itself, but - it is the best we can do. */ - val = extract_floating (valbuf, TYPE_LENGTH (type)); - floatformat_from_doublest (&floatformat_i387_ext, &val, buf); - write_register_bytes (REGISTER_BYTE (FP0_REGNUM), buf, - FPU_REG_RAW_SIZE); - } - } - else - { - int low_size = REGISTER_RAW_SIZE (0); - int high_size = REGISTER_RAW_SIZE (1); - - if (len <= low_size) - write_register_bytes (REGISTER_BYTE (0), valbuf, len); - else if (len <= (low_size + high_size)) - { - write_register_bytes (REGISTER_BYTE (0), valbuf, low_size); - write_register_bytes (REGISTER_BYTE (1), - valbuf + low_size, len - low_size); - } - else - internal_error (__FILE__, __LINE__, - "Cannot store return value of %d bytes long.", len); - } -} - - -static char * -x86_64_register_name (int reg_nr) -{ - static char *register_names[] = { - "rax", "rdx", "rcx", "rbx", - "rsi", "rdi", "rbp", "rsp", - "r8", "r9", "r10", "r11", - "r12", "r13", "r14", "r15", - "rip", "eflags", - "st0", "st1", "st2", "st3", - "st4", "st5", "st6", "st7", - "fctrl", "fstat", "ftag", "fiseg", - "fioff", "foseg", "fooff", "fop", - "xmm0", "xmm1", "xmm2", "xmm3", - "xmm4", "xmm5", "xmm6", "xmm7", - "xmm8", "xmm9", "xmm10", "xmm11", - "xmm12", "xmm13", "xmm14", "xmm15", - "mxcsr" - }; - if (reg_nr < 0) - return NULL; - if (reg_nr >= (sizeof (register_names) / sizeof (*register_names))) - return NULL; - return register_names[reg_nr]; -} - - - -/* We have two flavours of disassembly. The machinery on this page - deals with switching between those. */ - -static int -gdb_print_insn_x86_64 (bfd_vma memaddr, disassemble_info * info) -{ - if (disassembly_flavour == att_flavour) - return print_insn_i386_att (memaddr, info); - else if (disassembly_flavour == intel_flavour) - return print_insn_i386_intel (memaddr, info); - /* Never reached -- disassembly_flavour is always either att_flavour - or intel_flavour. */ - internal_error (__FILE__, __LINE__, "failed internal consistency check"); -} - - -/* Store the address of the place in which to copy the structure the - subroutine will return. This is called from call_function. */ -void -x86_64_store_struct_return (CORE_ADDR addr, CORE_ADDR sp) -{ - write_register (RDI_REGNUM, addr); -} - -int -x86_64_frameless_function_invocation (struct frame_info *frame) -{ - return 0; -} - -/* On x86_64 there are no reasonable prologs. */ -CORE_ADDR -x86_64_skip_prologue (CORE_ADDR pc) -{ - return pc; -} - -/* Sequence of bytes for breakpoint instruction. */ -static unsigned char * -x86_64_breakpoint_from_pc (CORE_ADDR *pc, int *lenptr) -{ - static unsigned char breakpoint[] = { 0xcc }; - *lenptr = 1; - return breakpoint; -} - -static struct gdbarch * -i386_gdbarch_init (struct gdbarch_info info, struct gdbarch_list *arches) -{ - struct gdbarch *gdbarch; - struct gdbarch_tdep *tdep; - - /* Find a candidate among the list of pre-declared architectures. */ - for (arches = gdbarch_list_lookup_by_info (arches, &info); - arches != NULL; - arches = gdbarch_list_lookup_by_info (arches->next, &info)) - { - switch (info.bfd_arch_info->mach) - { - case bfd_mach_x86_64: - case bfd_mach_x86_64_intel_syntax: - switch (gdbarch_bfd_arch_info (arches->gdbarch)->mach) - { - case bfd_mach_x86_64: - case bfd_mach_x86_64_intel_syntax: - return arches->gdbarch; - case bfd_mach_i386_i386: - case bfd_mach_i386_i8086: - case bfd_mach_i386_i386_intel_syntax: - break; - default: - internal_error (__FILE__, __LINE__, - "i386_gdbarch_init: unknown machine type"); - } - break; - case bfd_mach_i386_i386: - case bfd_mach_i386_i8086: - case bfd_mach_i386_i386_intel_syntax: - switch (gdbarch_bfd_arch_info (arches->gdbarch)->mach) - { - case bfd_mach_x86_64: - case bfd_mach_x86_64_intel_syntax: - break; - case bfd_mach_i386_i386: - case bfd_mach_i386_i8086: - case bfd_mach_i386_i386_intel_syntax: - return arches->gdbarch; - default: - internal_error (__FILE__, __LINE__, - "i386_gdbarch_init: unknown machine type"); - } - break; - default: - internal_error (__FILE__, __LINE__, - "i386_gdbarch_init: unknown machine type"); - } - } - - tdep = (struct gdbarch_tdep *) xmalloc (sizeof (struct gdbarch_tdep)); - gdbarch = gdbarch_alloc (&info, tdep); - - switch (info.bfd_arch_info->mach) - { - case bfd_mach_x86_64: - case bfd_mach_x86_64_intel_syntax: - tdep->num_xmm_regs = 16; - break; - case bfd_mach_i386_i386: - case bfd_mach_i386_i8086: - case bfd_mach_i386_i386_intel_syntax: - /* This is place for definition of i386 target vector. */ - break; - default: - internal_error (__FILE__, __LINE__, - "i386_gdbarch_init: unknown machine type"); - } - - set_gdbarch_long_bit (gdbarch, 64); - set_gdbarch_long_long_bit (gdbarch, 64); - set_gdbarch_ptr_bit (gdbarch, 64); - - set_gdbarch_long_double_format (gdbarch, &floatformat_i387_ext); - - set_gdbarch_num_regs (gdbarch, X86_64_NUM_REGS); - set_gdbarch_register_name (gdbarch, x86_64_register_name); - set_gdbarch_register_size (gdbarch, 8); - set_gdbarch_register_raw_size (gdbarch, x86_64_register_raw_size); - set_gdbarch_max_register_raw_size (gdbarch, 16); - set_gdbarch_register_byte (gdbarch, x86_64_register_byte); - /* Total amount of space needed to store our copies of the machine's register - (SIZEOF_GREGS + SIZEOF_FPU_REGS + SIZEOF_FPU_CTRL_REGS + SIZEOF_SSE_REGS) */ - set_gdbarch_register_bytes (gdbarch, - (18 * 8) + (8 * 10) + (8 * 4) + (8 * 16 + 4)); - set_gdbarch_register_virtual_size (gdbarch, generic_register_virtual_size); - set_gdbarch_max_register_virtual_size (gdbarch, 16); - - set_gdbarch_register_virtual_type (gdbarch, x86_64_register_virtual_type); - - set_gdbarch_register_convertible (gdbarch, x86_64_register_convertible); - set_gdbarch_register_convert_to_virtual (gdbarch, - x86_64_register_convert_to_virtual); - set_gdbarch_register_convert_to_raw (gdbarch, - x86_64_register_convert_to_raw); - -/* Register numbers of various important registers. */ - set_gdbarch_sp_regnum (gdbarch, 7); /* (rsp) Contains address of top of stack. */ - set_gdbarch_fp_regnum (gdbarch, 6); /* (rbp) */ - set_gdbarch_pc_regnum (gdbarch, 16); /* (rip) Contains program counter. */ - - set_gdbarch_fp0_regnum (gdbarch, 18); /* First FPU floating-point register. */ - - set_gdbarch_read_fp (gdbarch, cfi_read_fp); - set_gdbarch_write_fp (gdbarch, cfi_write_fp); - -/* Discard from the stack the innermost frame, restoring all registers. */ - set_gdbarch_pop_frame (gdbarch, x86_64_pop_frame); - - /* FRAME_CHAIN takes a frame's nominal address and produces the frame's - chain-pointer. */ - set_gdbarch_frame_chain (gdbarch, cfi_frame_chain); - - set_gdbarch_frameless_function_invocation (gdbarch, - x86_64_frameless_function_invocation); - set_gdbarch_frame_saved_pc (gdbarch, x86_64_linux_frame_saved_pc); - - set_gdbarch_frame_args_address (gdbarch, default_frame_address); - set_gdbarch_frame_locals_address (gdbarch, default_frame_address); - -/* Return number of bytes at start of arglist that are not really args. */ - set_gdbarch_frame_args_skip (gdbarch, 8); - - set_gdbarch_frame_init_saved_regs (gdbarch, x86_64_frame_init_saved_regs); - -/* Frame pc initialization is handled by unwind informations. */ - set_gdbarch_init_frame_pc (gdbarch, cfi_init_frame_pc); - -/* Initialization of unwind informations. */ - set_gdbarch_init_extra_frame_info (gdbarch, cfi_init_extra_frame_info); - -/* Getting saved registers is handled by unwind informations. */ - set_gdbarch_get_saved_register (gdbarch, cfi_get_saved_register); - - set_gdbarch_frame_init_saved_regs (gdbarch, x86_64_frame_init_saved_regs); - -/* Cons up virtual frame pointer for trace */ - set_gdbarch_virtual_frame_pointer (gdbarch, cfi_virtual_frame_pointer); - - - set_gdbarch_frame_chain_valid (gdbarch, generic_file_frame_chain_valid); - - set_gdbarch_use_generic_dummy_frames (gdbarch, 1); - set_gdbarch_call_dummy_location (gdbarch, AT_ENTRY_POINT); - set_gdbarch_call_dummy_address (gdbarch, entry_point_address); - set_gdbarch_call_dummy_length (gdbarch, 0); - set_gdbarch_call_dummy_breakpoint_offset (gdbarch, 0); - set_gdbarch_call_dummy_breakpoint_offset_p (gdbarch, 1); - set_gdbarch_pc_in_call_dummy (gdbarch, pc_in_call_dummy_at_entry_point); - set_gdbarch_call_dummy_words (gdbarch, 0); - set_gdbarch_sizeof_call_dummy_words (gdbarch, 0); - set_gdbarch_call_dummy_stack_adjust_p (gdbarch, 0); - set_gdbarch_call_dummy_p (gdbarch, 1); - set_gdbarch_call_dummy_start_offset (gdbarch, 0); - set_gdbarch_push_dummy_frame (gdbarch, generic_push_dummy_frame); - set_gdbarch_fix_call_dummy (gdbarch, generic_fix_call_dummy); - set_gdbarch_push_return_address (gdbarch, x86_64_push_return_address); - set_gdbarch_push_arguments (gdbarch, x86_64_push_arguments); - -/* Return number of args passed to a frame, no way to tell. */ - set_gdbarch_frame_num_args (gdbarch, frame_num_args_unknown); -/* Don't use default structure extract routine */ - set_gdbarch_extract_struct_value_address (gdbarch, 0); - -/* If USE_STRUCT_CONVENTION retruns 0, then gdb uses STORE_RETURN_VALUE - and EXTRACT_RETURN_VALUE to store/fetch the functions return value. It is - the case when structure is returned in registers. */ - set_gdbarch_use_struct_convention (gdbarch, x86_64_use_struct_convention); - -/* Store the address of the place in which to copy the structure the - subroutine will return. This is called from call_function. */ - set_gdbarch_store_struct_return (gdbarch, x86_64_store_struct_return); - -/* 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. */ - set_gdbarch_extract_return_value (gdbarch, x86_64_extract_return_value); - - -/* Write into the appropriate registers a function return value stored - in VALBUF of type TYPE, given in virtual format. */ - set_gdbarch_store_return_value (gdbarch, x86_64_store_return_value); - - -/* Offset from address of function to start of its code. */ - set_gdbarch_function_start_offset (gdbarch, 0); - - set_gdbarch_skip_prologue (gdbarch, x86_64_skip_prologue); - - set_gdbarch_saved_pc_after_call (gdbarch, x86_64_linux_saved_pc_after_call); - - set_gdbarch_inner_than (gdbarch, core_addr_lessthan); - - set_gdbarch_breakpoint_from_pc (gdbarch, x86_64_breakpoint_from_pc); - - -/* Amount PC must be decremented by after a breakpoint. This is often the - number of bytes in BREAKPOINT but not always. */ - set_gdbarch_decr_pc_after_break (gdbarch, 1); - -/* Use dwarf2 debug frame informations. */ - set_gdbarch_dwarf2_build_frame_info (gdbarch, dwarf2_build_frame_info); - return gdbarch; -} - -void -_initialize_x86_64_tdep (void) -{ - register_gdbarch_init (bfd_arch_i386, i386_gdbarch_init); - - /* Initialize the table saying where each register starts in the - register file. */ - { - int i, offset; - - offset = 0; - for (i = 0; i < X86_64_NUM_REGS; i++) - { - x86_64_register_byte_table[i] = offset; - offset += x86_64_register_raw_size_table[i]; - } - } - - tm_print_insn = gdb_print_insn_x86_64; - tm_print_insn_info.mach = bfd_lookup_arch (bfd_arch_i386, 3)->mach; - - /* Add the variable that controls the disassembly flavour. */ - { - struct cmd_list_element *new_cmd; - - new_cmd = add_set_enum_cmd ("disassembly-flavour", no_class, - valid_flavours, &disassembly_flavour, "\ -Set the disassembly flavour, the valid values are \"att\" and \"intel\", \ -and the default value is \"att\".", &setlist); - add_show_from_set (new_cmd, &showlist); - } -} |