/* Intel 386 target-dependent stuff.
- Copyright (C) 1988-2014 Free Software Foundation, Inc.
+ Copyright (C) 1988-2017 Free Software Foundation, Inc.
This file is part of GDB.
#include "dis-asm.h"
#include "disasm.h"
#include "remote.h"
-#include "exceptions.h"
#include "i386-tdep.h"
#include "i387-tdep.h"
#include "x86-xstate.h"
#include "record.h"
#include "record-full.h"
-#include <stdint.h>
-
#include "features/i386/i386.c"
#include "features/i386/i386-avx.c"
#include "features/i386/i386-mpx.c"
-#include "features/i386/i386-avx512.c"
+#include "features/i386/i386-avx-mpx.c"
+#include "features/i386/i386-avx-avx512.c"
+#include "features/i386/i386-avx-mpx-avx512-pku.c"
#include "features/i386/i386-mmx.c"
#include "ax.h"
#include "expression.h"
#include "parser-defs.h"
#include <ctype.h>
+#include <algorithm>
/* Register names. */
"bnd0raw", "bnd1raw", "bnd2raw", "bnd3raw", "bndcfgu", "bndstatus"
};
+static const char* i386_pkeys_names[] =
+{
+ "pkru"
+};
+
/* Register names for MPX pseudo-registers. */
static const char *i386_bnd_names[] =
return regnum >= 0 && regnum < I387_NUM_MPX_CTRL_REGS;
}
+/* PKRU register? */
+
+bool
+i386_pkru_regnum_p (struct gdbarch *gdbarch, int regnum)
+{
+ struct gdbarch_tdep *tdep = gdbarch_tdep (gdbarch);
+ int pkru_regnum = tdep->pkru_regnum;
+
+ if (pkru_regnum < 0)
+ return false;
+
+ regnum -= pkru_regnum;
+ return regnum >= 0 && regnum < I387_NUM_PKEYS_REGS;
+}
+
/* Return the name of register REGNUM, or the empty string if it is
an anonymous register. */
return gdbarch_num_regs (gdbarch) + gdbarch_num_pseudo_regs (gdbarch);
}
-/* Convert SVR4 register number REG to the appropriate register number
+/* Convert SVR4 DWARF register number REG to the appropriate register number
used by GDB. */
static int
-i386_svr4_reg_to_regnum (struct gdbarch *gdbarch, int reg)
+i386_svr4_dwarf_reg_to_regnum (struct gdbarch *gdbarch, int reg)
{
struct gdbarch_tdep *tdep = gdbarch_tdep (gdbarch);
case 45: return I386_GS_REGNUM;
}
- /* This will hopefully provoke a warning. */
- return gdbarch_num_regs (gdbarch) + gdbarch_num_pseudo_regs (gdbarch);
+ return -1;
+}
+
+/* Wrapper on i386_svr4_dwarf_reg_to_regnum to return
+ num_regs + num_pseudo_regs for other debug formats. */
+
+static int
+i386_svr4_reg_to_regnum (struct gdbarch *gdbarch, int reg)
+{
+ int regnum = i386_svr4_dwarf_reg_to_regnum (gdbarch, reg);
+
+ if (regnum == -1)
+ return gdbarch_num_regs (gdbarch) + gdbarch_num_pseudo_regs (gdbarch);
+ return regnum;
}
\f
This function is 64-bit safe. */
-static const gdb_byte *
-i386_breakpoint_from_pc (struct gdbarch *gdbarch, CORE_ADDR *pc, int *len)
-{
- static gdb_byte break_insn[] = { 0xcc }; /* int 3 */
+constexpr gdb_byte i386_break_insn[] = { 0xcc }; /* int 3 */
+
+typedef BP_MANIPULATION (i386_break_insn) i386_breakpoint;
- *len = sizeof (break_insn);
- return break_insn;
-}
\f
/* Displaced instruction handling. */
struct regcache *regs)
{
size_t len = gdbarch_max_insn_length (gdbarch);
- gdb_byte *buf = xmalloc (len);
+ gdb_byte *buf = (gdb_byte *) xmalloc (len);
read_memory (from, buf, len);
if (current_pc > pc + offset_and)
cache->saved_sp_reg = regnums[reg];
- return min (pc + offset + 3, current_pc);
+ return std::min (pc + offset + 3, current_pc);
}
/* Maximum instruction length we need to handle. */
{
CORE_ADDR post_prologue_pc
= skip_prologue_using_sal (gdbarch, func_addr);
- struct symtab *s = find_pc_symtab (func_addr);
+ struct compunit_symtab *cust = find_pc_compunit_symtab (func_addr);
/* Clang always emits a line note before the prologue and another
one after. We trust clang to emit usable line notes. */
if (post_prologue_pc
- && (s != NULL
- && s->producer != NULL
- && strncmp (s->producer, "clang ", sizeof ("clang ") - 1) == 0))
- return max (start_pc, post_prologue_pc);
+ && (cust != NULL
+ && COMPUNIT_PRODUCER (cust) != NULL
+ && startswith (COMPUNIT_PRODUCER (cust), "clang ")))
+ return std::max (start_pc, post_prologue_pc);
}
cache.locals = -1;
static struct i386_frame_cache *
i386_frame_cache (struct frame_info *this_frame, void **this_cache)
{
- volatile struct gdb_exception ex;
struct i386_frame_cache *cache;
if (*this_cache)
- return *this_cache;
+ return (struct i386_frame_cache *) *this_cache;
cache = i386_alloc_frame_cache ();
*this_cache = cache;
- TRY_CATCH (ex, RETURN_MASK_ERROR)
+ TRY
{
i386_frame_cache_1 (this_frame, cache);
}
- if (ex.reason < 0 && ex.error != NOT_AVAILABLE_ERROR)
- throw_exception (ex);
+ CATCH (ex, RETURN_MASK_ERROR)
+ {
+ if (ex.error != NOT_AVAILABLE_ERROR)
+ throw_exception (ex);
+ }
+ END_CATCH
return cache;
}
/* Normal frames, but in a function epilogue. */
-/* The epilogue is defined here as the 'ret' instruction, which will
+/* Implement the stack_frame_destroyed_p gdbarch method.
+
+ The epilogue is defined here as the 'ret' instruction, which will
follow any instruction such as 'leave' or 'pop %ebp' that destroys
the function's stack frame. */
static int
-i386_in_function_epilogue_p (struct gdbarch *gdbarch, CORE_ADDR pc)
+i386_stack_frame_destroyed_p (struct gdbarch *gdbarch, CORE_ADDR pc)
{
gdb_byte insn;
- struct symtab *symtab;
+ struct compunit_symtab *cust;
- symtab = find_pc_symtab (pc);
- if (symtab && symtab->epilogue_unwind_valid)
+ cust = find_pc_compunit_symtab (pc);
+ if (cust != NULL && COMPUNIT_EPILOGUE_UNWIND_VALID (cust))
return 0;
if (target_read_memory (pc, &insn, 1))
void **this_prologue_cache)
{
if (frame_relative_level (this_frame) == 0)
- return i386_in_function_epilogue_p (get_frame_arch (this_frame),
- get_frame_pc (this_frame));
+ return i386_stack_frame_destroyed_p (get_frame_arch (this_frame),
+ get_frame_pc (this_frame));
else
return 0;
}
static struct i386_frame_cache *
i386_epilogue_frame_cache (struct frame_info *this_frame, void **this_cache)
{
- volatile struct gdb_exception ex;
struct i386_frame_cache *cache;
CORE_ADDR sp;
if (*this_cache)
- return *this_cache;
+ return (struct i386_frame_cache *) *this_cache;
cache = i386_alloc_frame_cache ();
*this_cache = cache;
- TRY_CATCH (ex, RETURN_MASK_ERROR)
+ TRY
{
cache->pc = get_frame_func (this_frame);
cache->base_p = 1;
}
- if (ex.reason < 0 && ex.error != NOT_AVAILABLE_ERROR)
- throw_exception (ex);
+ CATCH (ex, RETURN_MASK_ERROR)
+ {
+ if (ex.error != NOT_AVAILABLE_ERROR)
+ throw_exception (ex);
+ }
+ END_CATCH
return cache;
}
struct gdbarch *gdbarch = get_frame_arch (this_frame);
struct gdbarch_tdep *tdep = gdbarch_tdep (gdbarch);
enum bfd_endian byte_order = gdbarch_byte_order (gdbarch);
- volatile struct gdb_exception ex;
struct i386_frame_cache *cache;
CORE_ADDR addr;
gdb_byte buf[4];
if (*this_cache)
- return *this_cache;
+ return (struct i386_frame_cache *) *this_cache;
cache = i386_alloc_frame_cache ();
- TRY_CATCH (ex, RETURN_MASK_ERROR)
+ TRY
{
get_frame_register (this_frame, I386_ESP_REGNUM, buf);
cache->base = extract_unsigned_integer (buf, 4, byte_order) - 4;
cache->base_p = 1;
}
- if (ex.reason < 0 && ex.error != NOT_AVAILABLE_ERROR)
- throw_exception (ex);
+ CATCH (ex, RETURN_MASK_ERROR)
+ {
+ if (ex.error != NOT_AVAILABLE_ERROR)
+ throw_exception (ex);
+ }
+ END_CATCH
*this_cache = cache;
return cache;
if (!tdep->i386_bnd_type)
{
- struct type *t, *bound_t;
+ struct type *t;
const struct builtin_type *bt = builtin_type (gdbarch);
/* The type we're building is described bellow: */
}
else if (i386_byte_regnum_p (gdbarch, regnum))
{
- /* Check byte pseudo registers last since this function will
- be called from amd64_pseudo_register_read, which handles
- byte pseudo registers differently. */
int gpnum = regnum - tdep->al_regnum;
/* Extract (always little endian). We read both lower and
}
else if (i386_byte_regnum_p (gdbarch, regnum))
{
- /* Check byte pseudo registers last since this function will
- be called from amd64_pseudo_register_read, which handles
- byte pseudo registers differently. */
int gpnum = regnum - tdep->al_regnum;
/* Read ... We read both lower and upper registers. */
internal_error (__FILE__, __LINE__, _("invalid regnum"));
}
}
+
+/* Implement the 'ax_pseudo_register_collect' gdbarch method. */
+
+int
+i386_ax_pseudo_register_collect (struct gdbarch *gdbarch,
+ struct agent_expr *ax, int regnum)
+{
+ struct gdbarch_tdep *tdep = gdbarch_tdep (gdbarch);
+
+ if (i386_mmx_regnum_p (gdbarch, regnum))
+ {
+ /* MMX to FPU register mapping depends on current TOS. Let's just
+ not care and collect everything... */
+ int i;
+
+ ax_reg_mask (ax, I387_FSTAT_REGNUM (tdep));
+ for (i = 0; i < 8; i++)
+ ax_reg_mask (ax, I387_ST0_REGNUM (tdep) + i);
+ return 0;
+ }
+ else if (i386_bnd_regnum_p (gdbarch, regnum))
+ {
+ regnum -= tdep->bnd0_regnum;
+ ax_reg_mask (ax, I387_BND0R_REGNUM (tdep) + regnum);
+ return 0;
+ }
+ else if (i386_k_regnum_p (gdbarch, regnum))
+ {
+ regnum -= tdep->k0_regnum;
+ ax_reg_mask (ax, tdep->k0_regnum + regnum);
+ return 0;
+ }
+ else if (i386_zmm_regnum_p (gdbarch, regnum))
+ {
+ regnum -= tdep->zmm0_regnum;
+ if (regnum < num_lower_zmm_regs)
+ {
+ ax_reg_mask (ax, I387_XMM0_REGNUM (tdep) + regnum);
+ ax_reg_mask (ax, tdep->ymm0h_regnum + regnum);
+ }
+ else
+ {
+ ax_reg_mask (ax, I387_XMM16_REGNUM (tdep) + regnum
+ - num_lower_zmm_regs);
+ ax_reg_mask (ax, I387_YMM16H_REGNUM (tdep) + regnum
+ - num_lower_zmm_regs);
+ }
+ ax_reg_mask (ax, tdep->zmm0h_regnum + regnum);
+ return 0;
+ }
+ else if (i386_ymm_regnum_p (gdbarch, regnum))
+ {
+ regnum -= tdep->ymm0_regnum;
+ ax_reg_mask (ax, I387_XMM0_REGNUM (tdep) + regnum);
+ ax_reg_mask (ax, tdep->ymm0h_regnum + regnum);
+ return 0;
+ }
+ else if (i386_ymm_avx512_regnum_p (gdbarch, regnum))
+ {
+ regnum -= tdep->ymm16_regnum;
+ ax_reg_mask (ax, I387_XMM16_REGNUM (tdep) + regnum);
+ ax_reg_mask (ax, tdep->ymm16h_regnum + regnum);
+ return 0;
+ }
+ else if (i386_word_regnum_p (gdbarch, regnum))
+ {
+ int gpnum = regnum - tdep->ax_regnum;
+
+ ax_reg_mask (ax, gpnum);
+ return 0;
+ }
+ else if (i386_byte_regnum_p (gdbarch, regnum))
+ {
+ int gpnum = regnum - tdep->al_regnum;
+
+ ax_reg_mask (ax, gpnum % 4);
+ return 0;
+ }
+ else
+ internal_error (__FILE__, __LINE__, _("invalid regnum"));
+ return 1;
+}
\f
/* Return the register number of the register allocated by GCC after
{
struct gdbarch *gdbarch = get_regcache_arch (regcache);
const struct gdbarch_tdep *tdep = gdbarch_tdep (gdbarch);
- const gdb_byte *regs = gregs;
+ const gdb_byte *regs = (const gdb_byte *) gregs;
int i;
- gdb_assert (len == tdep->sizeof_gregset);
+ gdb_assert (len >= tdep->sizeof_gregset);
for (i = 0; i < tdep->gregset_num_regs; i++)
{
{
struct gdbarch *gdbarch = get_regcache_arch (regcache);
const struct gdbarch_tdep *tdep = gdbarch_tdep (gdbarch);
- gdb_byte *regs = gregs;
+ gdb_byte *regs = (gdb_byte *) gregs;
int i;
- gdb_assert (len == tdep->sizeof_gregset);
+ gdb_assert (len >= tdep->sizeof_gregset);
for (i = 0; i < tdep->gregset_num_regs; i++)
{
return;
}
- gdb_assert (len == tdep->sizeof_fpregset);
+ gdb_assert (len >= tdep->sizeof_fpregset);
i387_supply_fsave (regcache, regnum, fpregs);
}
return;
}
- gdb_assert (len == tdep->sizeof_fpregset);
+ gdb_assert (len >= tdep->sizeof_fpregset);
i387_collect_fsave (regcache, regnum, fpregs);
}
-/* Similar to i386_supply_fpregset, but use XSAVE extended state. */
-
-static void
-i386_supply_xstateregset (const struct regset *regset,
- struct regcache *regcache, int regnum,
- const void *xstateregs, size_t len)
-{
- i387_supply_xsave (regcache, regnum, xstateregs);
-}
-
-/* Similar to i386_collect_fpregset , but use XSAVE extended state. */
-
-static void
-i386_collect_xstateregset (const struct regset *regset,
- const struct regcache *regcache,
- int regnum, void *xstateregs, size_t len)
-{
- i387_collect_xsave (regcache, regnum, xstateregs, 1);
-}
-
/* Register set definitions. */
const struct regset i386_gregset =
NULL, i386_supply_gregset, i386_collect_gregset
};
-static const struct regset i386_fpregset =
+const struct regset i386_fpregset =
{
NULL, i386_supply_fpregset, i386_collect_fpregset
};
-static const struct regset i386_xstateregset =
- {
- NULL, i386_supply_xstateregset, i386_collect_xstateregset
- };
+/* Default iterator over core file register note sections. */
-/* Return the appropriate register set for the core section identified
- by SECT_NAME and SECT_SIZE. */
-
-const struct regset *
-i386_regset_from_core_section (struct gdbarch *gdbarch,
- const char *sect_name, size_t sect_size)
+void
+i386_iterate_over_regset_sections (struct gdbarch *gdbarch,
+ iterate_over_regset_sections_cb *cb,
+ void *cb_data,
+ const struct regcache *regcache)
{
struct gdbarch_tdep *tdep = gdbarch_tdep (gdbarch);
- if (strcmp (sect_name, ".reg") == 0 && sect_size == tdep->sizeof_gregset)
- return &i386_gregset;
-
- if ((strcmp (sect_name, ".reg2") == 0 && sect_size == tdep->sizeof_fpregset)
- || (strcmp (sect_name, ".reg-xfp") == 0
- && sect_size == I387_SIZEOF_FXSAVE))
- return &i386_fpregset;
-
- if (strcmp (sect_name, ".reg-xstate") == 0)
- return &i386_xstateregset;
-
- return NULL;
+ cb (".reg", tdep->sizeof_gregset, &i386_gregset, NULL, cb_data);
+ if (tdep->sizeof_fpregset)
+ cb (".reg2", tdep->sizeof_fpregset, tdep->fpregset, NULL, cb_data);
}
\f
if (symname)
{
- if (strncmp (symname, "__imp_", 6) == 0
- || strncmp (symname, "_imp_", 5) == 0)
+ if (startswith (symname, "__imp_")
+ || startswith (symname, "_imp_"))
return name ? 1 :
read_memory_unsigned_integer (indirect, 4, byte_order);
}
return 0;
len = s - start - 1;
- regname = alloca (len + 1);
+ regname = (char *) alloca (len + 1);
strncpy (regname, start, len);
regname[len] = '\0';
return 0;
len_base = s - start;
- base = alloca (len_base + 1);
+ base = (char *) alloca (len_base + 1);
strncpy (base, start, len_base);
base[len_base] = '\0';
++s;
len_index = s - start;
- index = alloca (len_index + 1);
+ index = (char *) alloca (len_index + 1);
strncpy (index, start, len_index);
index[len_index] = '\0';
TRIPLET,
THREE_ARG_DISPLACEMENT,
DONE
- } current_state;
+ };
+ int current_state;
current_state = TRIPLET;
\f
+/* gdbarch gnu_triplet_regexp method. Both arches are acceptable as GDB always
+ also supplies -m64 or -m32 by gdbarch_gcc_target_options. */
+
+static const char *
+i386_gnu_triplet_regexp (struct gdbarch *gdbarch)
+{
+ return "(x86_64|i.86)";
+}
+
+\f
+
/* Generic ELF. */
void
i386_stap_is_single_operand);
set_gdbarch_stap_parse_special_token (gdbarch,
i386_stap_parse_special_token);
+
+ set_gdbarch_gnu_triplet_regexp (gdbarch, i386_gnu_triplet_regexp);
}
/* System V Release 4 (SVR4). */
set_gdbarch_sdb_reg_to_regnum (gdbarch, i386_svr4_reg_to_regnum);
set_gdbarch_has_dos_based_file_system (gdbarch, 1);
+
+ set_gdbarch_gnu_triplet_regexp (gdbarch, i386_gnu_triplet_regexp);
}
\f
ymm_regnum_p, ymmh_regnum_p, ymm_avx512_regnum_p, ymmh_avx512_regnum_p,
bndr_regnum_p, bnd_regnum_p, k_regnum_p, zmm_regnum_p, zmmh_regnum_p,
zmm_avx512_regnum_p, mpx_ctrl_regnum_p, xmm_avx512_regnum_p,
- avx512_p, avx_p, sse_p;
+ avx512_p, avx_p, sse_p, pkru_regnum_p;
/* Don't include pseudo registers, except for MMX, in any register
groups. */
if (group == i386_mmx_reggroup)
return mmx_regnum_p;
+ pkru_regnum_p = i386_pkru_regnum_p(gdbarch, regnum);
xmm_regnum_p = i386_xmm_regnum_p (gdbarch, regnum);
xmm_avx512_regnum_p = i386_xmm_avx512_regnum_p (gdbarch, regnum);
mxcsr_regnum_p = i386_mxcsr_regnum_p (gdbarch, regnum);
ymm_avx512_regnum_p = i386_ymm_avx512_regnum_p (gdbarch, regnum);
zmm_regnum_p = i386_zmm_regnum_p (gdbarch, regnum);
- avx512_p = ((tdep->xcr0 & X86_XSTATE_AVX512_MASK)
- == X86_XSTATE_AVX512_MASK);
- avx_p = ((tdep->xcr0 & X86_XSTATE_AVX512_MASK)
+ avx512_p = ((tdep->xcr0 & X86_XSTATE_AVX_AVX512_MASK)
+ == X86_XSTATE_AVX_AVX512_MASK);
+ avx_p = ((tdep->xcr0 & X86_XSTATE_AVX_AVX512_MASK)
== X86_XSTATE_AVX_MASK) && !avx512_p;
- sse_p = ((tdep->xcr0 & X86_XSTATE_AVX512_MASK)
+ sse_p = ((tdep->xcr0 & X86_XSTATE_AVX_AVX512_MASK)
== X86_XSTATE_SSE_MASK) && !avx512_p && ! avx_p;
if (group == vector_reggroup)
&& !bnd_regnum_p
&& !mpx_ctrl_regnum_p
&& !zmm_regnum_p
- && !zmmh_regnum_p);
+ && !zmmh_regnum_p
+ && !pkru_regnum_p);
return default_register_reggroup_p (gdbarch, regnum, group);
}
return read_memory_unsigned_integer (sp + (4 * (argi + 1)), 4, byte_order);
}
-static void
-i386_skip_permanent_breakpoint (struct regcache *regcache)
-{
- CORE_ADDR current_pc = regcache_read_pc (regcache);
-
- /* On i386, breakpoint is exactly 1 byte long, so we just
- adjust the PC in the regcache. */
- current_pc += 1;
- regcache_write_pc (regcache, current_pc);
-}
-
-
#define PREFIX_REPZ 0x01
#define PREFIX_REPNZ 0x02
#define PREFIX_LOCK 0x04
{
if (record_full_memory_query)
{
- int q;
-
- target_terminal_ours ();
- q = yquery (_("\
+ if (yquery (_("\
Process record ignores the memory change of instruction at address %s\n\
because it can't get the value of the segment register.\n\
Do you want to stop the program?"),
- paddress (gdbarch, irp->orig_addr));
- target_terminal_inferior ();
- if (q)
- return -1;
+ paddress (gdbarch, irp->orig_addr)))
+ return -1;
}
return 0;
I386_RECORD_FULL_ARCH_LIST_ADD_REG (X86_RECORD_EFLAGS_REGNUM);
break;
- case 0x0fc7: /* cmpxchg8b */
+ case 0x0fc7: /* cmpxchg8b / rdrand / rdseed */
if (i386_record_modrm (&ir))
return -1;
if (ir.mod == 3)
{
- ir.addr -= 2;
- opcode = opcode << 8 | ir.modrm;
- goto no_support;
+ /* rdrand and rdseed use the 3 bits of the REG field of ModR/M as
+ an extended opcode. rdrand has bits 110 (/6) and rdseed
+ has bits 111 (/7). */
+ if (ir.reg == 6 || ir.reg == 7)
+ {
+ /* The storage register is described by the 3 R/M bits, but the
+ REX.B prefix may be used to give access to registers
+ R8~R15. In this case ir.rex_b + R/M will give us the register
+ in the range R8~R15.
+
+ REX.W may also be used to access 64-bit registers, but we
+ already record entire registers and not just partial bits
+ of them. */
+ I386_RECORD_FULL_ARCH_LIST_ADD_REG (ir.rex_b + ir.rm);
+ /* These instructions also set conditional bits. */
+ I386_RECORD_FULL_ARCH_LIST_ADD_REG (X86_RECORD_EFLAGS_REGNUM);
+ break;
+ }
+ else
+ {
+ /* We don't handle this particular instruction yet. */
+ ir.addr -= 2;
+ opcode = opcode << 8 | ir.modrm;
+ goto no_support;
+ }
}
I386_RECORD_FULL_ARCH_LIST_ADD_REG (X86_RECORD_REAX_REGNUM);
I386_RECORD_FULL_ARCH_LIST_ADD_REG (X86_RECORD_REDX_REGNUM);
{
if (record_full_memory_query)
{
- int q;
-
- target_terminal_ours ();
- q = yquery (_("\
+ if (yquery (_("\
Process record ignores the memory change of instruction at address %s\n\
because it can't get the value of the segment register.\n\
Do you want to stop the program?"),
- paddress (gdbarch, ir.orig_addr));
- target_terminal_inferior ();
- if (q)
+ paddress (gdbarch, ir.orig_addr)))
return -1;
}
}
/* addr += ((uint32_t) read_register (I386_ES_REGNUM)) << 4; */
if (record_full_memory_query)
{
- int q;
-
- target_terminal_ours ();
- q = yquery (_("\
+ if (yquery (_("\
Process record ignores the memory change of instruction at address %s\n\
because it can't get the value of the segment register.\n\
Do you want to stop the program?"),
- paddress (gdbarch, ir.orig_addr));
- target_terminal_inferior ();
- if (q)
+ paddress (gdbarch, ir.orig_addr)))
return -1;
}
}
{
if (record_full_memory_query)
{
- int q;
-
- target_terminal_ours ();
- q = yquery (_("\
+ if (yquery (_("\
Process record ignores the memory change of instruction at address %s\n\
because it can't get the value of the segment register.\n\
Do you want to stop the program?"),
- paddress (gdbarch, ir.orig_addr));
- target_terminal_inferior ();
- if (q)
- return -1;
+ paddress (gdbarch, ir.orig_addr)))
+ return -1;
}
}
else
{
if (record_full_memory_query)
{
- int q;
-
- target_terminal_ours ();
- q = yquery (_("\
+ if (yquery (_("\
Process record ignores the memory change of instruction at address %s\n\
because it can't get the value of the segment register.\n\
Do you want to stop the program?"),
- paddress (gdbarch, ir.orig_addr));
- target_terminal_inferior ();
- if (q)
+ paddress (gdbarch, ir.orig_addr)))
return -1;
}
}
string. */
static int
-i386_fast_tracepoint_valid_at (struct gdbarch *gdbarch,
- CORE_ADDR addr, int *isize, char **msg)
+i386_fast_tracepoint_valid_at (struct gdbarch *gdbarch, CORE_ADDR addr,
+ char **msg)
{
int len, jumplen;
- static struct ui_file *gdb_null = NULL;
/* Ask the target for the minimum instruction length supported. */
jumplen = target_get_min_fast_tracepoint_insn_len ();
jumplen = (register_size (gdbarch, 0) == 8) ? 5 : 4;
}
- /* Dummy file descriptor for the disassembler. */
- if (!gdb_null)
- gdb_null = ui_file_new ();
-
/* Check for fit. */
- len = gdb_print_insn (gdbarch, addr, gdb_null, NULL);
- if (isize)
- *isize = len;
+ len = gdb_insn_length (gdbarch, addr);
if (len < jumplen)
{
}
}
+/* Return a floating-point format for a floating-point variable of
+ length LEN in bits. If non-NULL, NAME is the name of its type.
+ If no suitable type is found, return NULL. */
+
+const struct floatformat **
+i386_floatformat_for_type (struct gdbarch *gdbarch,
+ const char *name, int len)
+{
+ if (len == 128 && name)
+ if (strcmp (name, "__float128") == 0
+ || strcmp (name, "_Float128") == 0
+ || strcmp (name, "complex _Float128") == 0)
+ return floatformats_ia64_quad;
+
+ return default_floatformat_for_type (gdbarch, name, len);
+}
+
static int
i386_validate_tdesc_p (struct gdbarch_tdep *tdep,
struct tdesc_arch_data *tdesc_data)
const struct tdesc_feature *feature_core;
const struct tdesc_feature *feature_sse, *feature_avx, *feature_mpx,
- *feature_avx512;
+ *feature_avx512, *feature_pkeys;
int i, num_regs, valid_p;
if (! tdesc_has_registers (tdesc))
/* Try AVX512 registers. */
feature_avx512 = tdesc_find_feature (tdesc, "org.gnu.gdb.i386.avx512");
+ /* Try PKEYS */
+ feature_pkeys = tdesc_find_feature (tdesc, "org.gnu.gdb.i386.pkeys");
+
valid_p = 1;
/* The XCR0 bits. */
if (!feature_avx)
return 0;
- tdep->xcr0 = X86_XSTATE_MPX_AVX512_MASK;
+ tdep->xcr0 = X86_XSTATE_AVX_AVX512_MASK;
/* It may have been set by OSABI initialization function. */
if (tdep->k0_regnum < 0)
tdep->mpx_register_names[i]);
}
+ if (feature_pkeys)
+ {
+ tdep->xcr0 |= X86_XSTATE_PKRU;
+ if (tdep->pkru_regnum < 0)
+ {
+ tdep->pkeys_register_names = i386_pkeys_names;
+ tdep->pkru_regnum = I386_PKRU_REGNUM;
+ tdep->num_pkeys_regs = 1;
+ }
+
+ for (i = 0; i < I387_NUM_PKEYS_REGS; i++)
+ valid_p &= tdesc_numbered_register (feature_pkeys, tdesc_data,
+ I387_PKRU_REGNUM (tdep) + i,
+ tdep->pkeys_register_names[i]);
+ }
+
return valid_p;
}
\f
+/* Note: This is called for both i386 and amd64. */
+
static struct gdbarch *
i386_gdbarch_init (struct gdbarch_info info, struct gdbarch_list *arches)
{
int ymm0_regnum;
int bnd0_regnum;
int num_bnd_cooked;
- int k0_regnum;
- int zmm0_regnum;
/* If there is already a candidate, use it. */
arches = gdbarch_list_lookup_by_info (arches, &info);
if (arches != NULL)
return arches->gdbarch;
- /* Allocate space for the new architecture. */
+ /* Allocate space for the new architecture. Assume i386 for now. */
tdep = XCNEW (struct gdbarch_tdep);
gdbarch = gdbarch_alloc (&info, tdep);
/* Floating-point registers. */
tdep->sizeof_fpregset = I387_SIZEOF_FSAVE;
+ tdep->fpregset = &i386_fpregset;
/* The default settings include the FPU registers, the MMX registers
and the SSE registers. This can be overridden for a specific ABI
alignment. */
set_gdbarch_long_double_bit (gdbarch, 96);
+ /* Support for floating-point data type variants. */
+ set_gdbarch_floatformat_for_type (gdbarch, i386_floatformat_for_type);
+
/* Register numbers of various important registers. */
set_gdbarch_sp_regnum (gdbarch, I386_ESP_REGNUM); /* %esp */
set_gdbarch_pc_regnum (gdbarch, I386_EIP_REGNUM); /* %eip */
set_gdbarch_sdb_reg_to_regnum (gdbarch, i386_dbx_reg_to_regnum);
/* Use the SVR4 register numbering scheme for DWARF 2. */
- set_gdbarch_dwarf2_reg_to_regnum (gdbarch, i386_svr4_reg_to_regnum);
+ set_gdbarch_dwarf2_reg_to_regnum (gdbarch, i386_svr4_dwarf_reg_to_regnum);
/* We don't set gdbarch_stab_reg_to_regnum, since ECOFF doesn't seem to
be in use on any of the supported i386 targets. */
/* Stack grows downward. */
set_gdbarch_inner_than (gdbarch, core_addr_lessthan);
- set_gdbarch_breakpoint_from_pc (gdbarch, i386_breakpoint_from_pc);
+ set_gdbarch_breakpoint_kind_from_pc (gdbarch, i386_breakpoint::kind_from_pc);
+ set_gdbarch_sw_breakpoint_from_kind (gdbarch, i386_breakpoint::bp_from_kind);
+
set_gdbarch_decr_pc_after_break (gdbarch, 1);
set_gdbarch_max_insn_length (gdbarch, I386_MAX_INSN_LEN);
set_gdbarch_pseudo_register_read_value (gdbarch,
i386_pseudo_register_read_value);
set_gdbarch_pseudo_register_write (gdbarch, i386_pseudo_register_write);
+ set_gdbarch_ax_pseudo_register_collect (gdbarch,
+ i386_ax_pseudo_register_collect);
set_tdesc_pseudo_register_type (gdbarch, i386_pseudo_register_type);
set_tdesc_pseudo_register_name (gdbarch, i386_pseudo_register_name);
/* Even though the default ABI only includes general-purpose registers,
floating-point registers and the SSE registers, we have to leave a
gap for the upper AVX, MPX and AVX512 registers. */
- set_gdbarch_num_regs (gdbarch, I386_AVX512_NUM_REGS);
+ set_gdbarch_num_regs (gdbarch, I386_PKEYS_NUM_REGS);
+
+ set_gdbarch_gnu_triplet_regexp (gdbarch, i386_gnu_triplet_regexp);
/* Get the x86 target description from INFO. */
tdesc = info.target_desc;
tdep->num_ymm_avx512_regs = 0;
tdep->num_xmm_avx512_regs = 0;
+ /* No PKEYS registers */
+ tdep->pkru_regnum = -1;
+ tdep->num_pkeys_regs = 0;
+
tdesc_data = tdesc_data_alloc ();
set_gdbarch_relocate_instruction (gdbarch, i386_relocate_instruction);
set_gdbarch_insn_is_ret (gdbarch, i386_insn_is_ret);
set_gdbarch_insn_is_jump (gdbarch, i386_insn_is_jump);
- /* Hook in ABI-specific overrides, if they have been registered. */
- info.tdep_info = (void *) tdesc_data;
+ /* Hook in ABI-specific overrides, if they have been registered.
+ Note: If INFO specifies a 64 bit arch, this is where we turn
+ a 32-bit i386 into a 64-bit amd64. */
+ info.tdep_info = tdesc_data;
gdbarch_init_osabi (info, gdbarch);
if (!i386_validate_tdesc_p (tdep, tdesc_data))
/* If we have a register mapping, enable the generic core file
support, unless it has already been enabled. */
if (tdep->gregset_reg_offset
- && !gdbarch_regset_from_core_section_p (gdbarch))
- set_gdbarch_regset_from_core_section (gdbarch,
- i386_regset_from_core_section);
-
- set_gdbarch_skip_permanent_breakpoint (gdbarch,
- i386_skip_permanent_breakpoint);
+ && !gdbarch_iterate_over_regset_sections_p (gdbarch))
+ set_gdbarch_iterate_over_regset_sections
+ (gdbarch, i386_iterate_over_regset_sections);
set_gdbarch_fast_tracepoint_valid_at (gdbarch,
i386_fast_tracepoint_valid_at);
}
\f
+/* Return the target description for a specified XSAVE feature mask. */
+
+const struct target_desc *
+i386_target_description (uint64_t xcr0)
+{
+ switch (xcr0 & X86_XSTATE_ALL_MASK)
+ {
+ case X86_XSTATE_AVX_MPX_AVX512_PKU_MASK:
+ return tdesc_i386_avx_mpx_avx512_pku;
+ case X86_XSTATE_AVX_AVX512_MASK:
+ return tdesc_i386_avx_avx512;
+ case X86_XSTATE_AVX_MPX_MASK:
+ return tdesc_i386_avx_mpx;
+ case X86_XSTATE_MPX_MASK:
+ return tdesc_i386_mpx;
+ case X86_XSTATE_AVX_MASK:
+ return tdesc_i386_avx;
+ default:
+ return tdesc_i386;
+ }
+}
+
+#define MPX_BASE_MASK (~(ULONGEST) 0xfff)
+
+/* Find the bound directory base address. */
+
+static unsigned long
+i386_mpx_bd_base (void)
+{
+ struct regcache *rcache;
+ struct gdbarch_tdep *tdep;
+ ULONGEST ret;
+ enum register_status regstatus;
+
+ rcache = get_current_regcache ();
+ tdep = gdbarch_tdep (get_regcache_arch (rcache));
+
+ regstatus = regcache_raw_read_unsigned (rcache, tdep->bndcfgu_regnum, &ret);
+
+ if (regstatus != REG_VALID)
+ error (_("BNDCFGU register invalid, read status %d."), regstatus);
+
+ return ret & MPX_BASE_MASK;
+}
+
+int
+i386_mpx_enabled (void)
+{
+ const struct gdbarch_tdep *tdep = gdbarch_tdep (get_current_arch ());
+ const struct target_desc *tdesc = tdep->tdesc;
+
+ return (tdesc_find_feature (tdesc, "org.gnu.gdb.i386.mpx") != NULL);
+}
+
+#define MPX_BD_MASK 0xfffffff00000ULL /* select bits [47:20] */
+#define MPX_BT_MASK 0x0000000ffff8 /* select bits [19:3] */
+#define MPX_BD_MASK_32 0xfffff000 /* select bits [31:12] */
+#define MPX_BT_MASK_32 0x00000ffc /* select bits [11:2] */
+
+/* Find the bound table entry given the pointer location and the base
+ address of the table. */
+
+static CORE_ADDR
+i386_mpx_get_bt_entry (CORE_ADDR ptr, CORE_ADDR bd_base)
+{
+ CORE_ADDR offset1;
+ CORE_ADDR offset2;
+ CORE_ADDR mpx_bd_mask, bd_ptr_r_shift, bd_ptr_l_shift;
+ CORE_ADDR bt_mask, bt_select_r_shift, bt_select_l_shift;
+ CORE_ADDR bd_entry_addr;
+ CORE_ADDR bt_addr;
+ CORE_ADDR bd_entry;
+ struct gdbarch *gdbarch = get_current_arch ();
+ struct type *data_ptr_type = builtin_type (gdbarch)->builtin_data_ptr;
+
+
+ if (gdbarch_ptr_bit (gdbarch) == 64)
+ {
+ mpx_bd_mask = (CORE_ADDR) MPX_BD_MASK;
+ bd_ptr_r_shift = 20;
+ bd_ptr_l_shift = 3;
+ bt_select_r_shift = 3;
+ bt_select_l_shift = 5;
+ bt_mask = (CORE_ADDR) MPX_BT_MASK;
+
+ if ( sizeof (CORE_ADDR) == 4)
+ error (_("bound table examination not supported\
+ for 64-bit process with 32-bit GDB"));
+ }
+ else
+ {
+ mpx_bd_mask = MPX_BD_MASK_32;
+ bd_ptr_r_shift = 12;
+ bd_ptr_l_shift = 2;
+ bt_select_r_shift = 2;
+ bt_select_l_shift = 4;
+ bt_mask = MPX_BT_MASK_32;
+ }
+
+ offset1 = ((ptr & mpx_bd_mask) >> bd_ptr_r_shift) << bd_ptr_l_shift;
+ bd_entry_addr = bd_base + offset1;
+ bd_entry = read_memory_typed_address (bd_entry_addr, data_ptr_type);
+
+ if ((bd_entry & 0x1) == 0)
+ error (_("Invalid bounds directory entry at %s."),
+ paddress (get_current_arch (), bd_entry_addr));
+
+ /* Clearing status bit. */
+ bd_entry--;
+ bt_addr = bd_entry & ~bt_select_r_shift;
+ offset2 = ((ptr & bt_mask) >> bt_select_r_shift) << bt_select_l_shift;
+
+ return bt_addr + offset2;
+}
+
+/* Print routine for the mpx bounds. */
+
+static void
+i386_mpx_print_bounds (const CORE_ADDR bt_entry[4])
+{
+ struct ui_out *uiout = current_uiout;
+ LONGEST size;
+ struct gdbarch *gdbarch = get_current_arch ();
+ CORE_ADDR onecompl = ~((CORE_ADDR) 0);
+ int bounds_in_map = ((~bt_entry[1] == 0 && bt_entry[0] == onecompl) ? 1 : 0);
+
+ if (bounds_in_map == 1)
+ {
+ uiout->text ("Null bounds on map:");
+ uiout->text (" pointer value = ");
+ uiout->field_core_addr ("pointer-value", gdbarch, bt_entry[2]);
+ uiout->text (".");
+ uiout->text ("\n");
+ }
+ else
+ {
+ uiout->text ("{lbound = ");
+ uiout->field_core_addr ("lower-bound", gdbarch, bt_entry[0]);
+ uiout->text (", ubound = ");
+
+ /* The upper bound is stored in 1's complement. */
+ uiout->field_core_addr ("upper-bound", gdbarch, ~bt_entry[1]);
+ uiout->text ("}: pointer value = ");
+ uiout->field_core_addr ("pointer-value", gdbarch, bt_entry[2]);
+
+ if (gdbarch_ptr_bit (gdbarch) == 64)
+ size = ( (~(int64_t) bt_entry[1]) - (int64_t) bt_entry[0]);
+ else
+ size = ( ~((int32_t) bt_entry[1]) - (int32_t) bt_entry[0]);
+
+ /* In case the bounds are 0x0 and 0xffff... the difference will be -1.
+ -1 represents in this sense full memory access, and there is no need
+ one to the size. */
+
+ size = (size > -1 ? size + 1 : size);
+ uiout->text (", size = ");
+ uiout->field_fmt ("size", "%s", plongest (size));
+
+ uiout->text (", metadata = ");
+ uiout->field_core_addr ("metadata", gdbarch, bt_entry[3]);
+ uiout->text ("\n");
+ }
+}
+
+/* Implement the command "show mpx bound". */
+
+static void
+i386_mpx_info_bounds (char *args, int from_tty)
+{
+ CORE_ADDR bd_base = 0;
+ CORE_ADDR addr;
+ CORE_ADDR bt_entry_addr = 0;
+ CORE_ADDR bt_entry[4];
+ int i;
+ struct gdbarch *gdbarch = get_current_arch ();
+ struct type *data_ptr_type = builtin_type (gdbarch)->builtin_data_ptr;
+
+ if (gdbarch_bfd_arch_info (gdbarch)->arch != bfd_arch_i386
+ || !i386_mpx_enabled ())
+ {
+ printf_unfiltered (_("Intel Memory Protection Extensions not "
+ "supported on this target.\n"));
+ return;
+ }
+
+ if (args == NULL)
+ {
+ printf_unfiltered (_("Address of pointer variable expected.\n"));
+ return;
+ }
+
+ addr = parse_and_eval_address (args);
+
+ bd_base = i386_mpx_bd_base ();
+ bt_entry_addr = i386_mpx_get_bt_entry (addr, bd_base);
+
+ memset (bt_entry, 0, sizeof (bt_entry));
+
+ for (i = 0; i < 4; i++)
+ bt_entry[i] = read_memory_typed_address (bt_entry_addr
+ + i * TYPE_LENGTH (data_ptr_type),
+ data_ptr_type);
+
+ i386_mpx_print_bounds (bt_entry);
+}
+
+/* Implement the command "set mpx bound". */
+
+static void
+i386_mpx_set_bounds (char *args, int from_tty)
+{
+ CORE_ADDR bd_base = 0;
+ CORE_ADDR addr, lower, upper;
+ CORE_ADDR bt_entry_addr = 0;
+ CORE_ADDR bt_entry[2];
+ const char *input = args;
+ int i;
+ struct gdbarch *gdbarch = get_current_arch ();
+ enum bfd_endian byte_order = gdbarch_byte_order (gdbarch);
+ struct type *data_ptr_type = builtin_type (gdbarch)->builtin_data_ptr;
+
+ if (gdbarch_bfd_arch_info (gdbarch)->arch != bfd_arch_i386
+ || !i386_mpx_enabled ())
+ error (_("Intel Memory Protection Extensions not supported\
+ on this target."));
+
+ if (args == NULL)
+ error (_("Pointer value expected."));
+
+ addr = value_as_address (parse_to_comma_and_eval (&input));
+
+ if (input[0] == ',')
+ ++input;
+ if (input[0] == '\0')
+ error (_("wrong number of arguments: missing lower and upper bound."));
+ lower = value_as_address (parse_to_comma_and_eval (&input));
+
+ if (input[0] == ',')
+ ++input;
+ if (input[0] == '\0')
+ error (_("Wrong number of arguments; Missing upper bound."));
+ upper = value_as_address (parse_to_comma_and_eval (&input));
+
+ bd_base = i386_mpx_bd_base ();
+ bt_entry_addr = i386_mpx_get_bt_entry (addr, bd_base);
+ for (i = 0; i < 2; i++)
+ bt_entry[i] = read_memory_typed_address (bt_entry_addr
+ + i * TYPE_LENGTH (data_ptr_type),
+ data_ptr_type);
+ bt_entry[0] = (uint64_t) lower;
+ bt_entry[1] = ~(uint64_t) upper;
+
+ for (i = 0; i < 2; i++)
+ write_memory_unsigned_integer (bt_entry_addr
+ + i * TYPE_LENGTH (data_ptr_type),
+ TYPE_LENGTH (data_ptr_type), byte_order,
+ bt_entry[i]);
+}
+
+static struct cmd_list_element *mpx_set_cmdlist, *mpx_show_cmdlist;
+
+/* Helper function for the CLI commands. */
+
+static void
+set_mpx_cmd (char *args, int from_tty)
+{
+ help_list (mpx_set_cmdlist, "set mpx ", all_commands, gdb_stdout);
+}
+
+/* Helper function for the CLI commands. */
+
+static void
+show_mpx_cmd (char *args, int from_tty)
+{
+ cmd_show_list (mpx_show_cmdlist, from_tty, "");
+}
+
/* Provide a prototype to silence -Wmissing-prototypes. */
void _initialize_i386_tdep (void);
NULL, /* FIXME: i18n: */
&setlist, &showlist);
+ /* Add "mpx" prefix for the set commands. */
+
+ add_prefix_cmd ("mpx", class_support, set_mpx_cmd, _("\
+Set Intel Memory Protection Extensions specific variables."),
+ &mpx_set_cmdlist, "set mpx ",
+ 0 /* allow-unknown */, &setlist);
+
+ /* Add "mpx" prefix for the show commands. */
+
+ add_prefix_cmd ("mpx", class_support, show_mpx_cmd, _("\
+Show Intel Memory Protection Extensions specific variables."),
+ &mpx_show_cmdlist, "show mpx ",
+ 0 /* allow-unknown */, &showlist);
+
+ /* Add "bound" command for the show mpx commands list. */
+
+ add_cmd ("bound", no_class, i386_mpx_info_bounds,
+ "Show the memory bounds for a given array/pointer storage\
+ in the bound table.",
+ &mpx_show_cmdlist);
+
+ /* Add "bound" command for the set mpx commands list. */
+
+ add_cmd ("bound", no_class, i386_mpx_set_bounds,
+ "Set the memory bounds for a given array/pointer storage\
+ in the bound table.",
+ &mpx_set_cmdlist);
+
gdbarch_register_osabi_sniffer (bfd_arch_i386, bfd_target_coff_flavour,
i386_coff_osabi_sniffer);
initialize_tdesc_i386_mmx ();
initialize_tdesc_i386_avx ();
initialize_tdesc_i386_mpx ();
- initialize_tdesc_i386_avx512 ();
+ initialize_tdesc_i386_avx_mpx ();
+ initialize_tdesc_i386_avx_avx512 ();
+ initialize_tdesc_i386_avx_mpx_avx512_pku ();
/* Tell remote stub that we support XML target description. */
register_remote_support_xml ("i386");
projects / deliverable / binutils-gdb.git / blobdiff