/* Target-dependent code for AMD64.
- Copyright (C) 2001-2012 Free Software Foundation, Inc.
+ Copyright (C) 2001-2013 Free Software Foundation, Inc.
Contributed by Jiri Smid, SuSE Labs.
#include "features/i386/amd64.c"
#include "features/i386/amd64-avx.c"
+#include "features/i386/amd64-mpx.c"
#include "features/i386/x32.c"
#include "features/i386/x32-avx.c"
"ymm12h", "ymm13h", "ymm14h", "ymm15h"
};
-/* The registers used to pass integer arguments during a function call. */
-static int amd64_dummy_call_integer_regs[] =
+static const char *amd64_mpx_names[] =
{
- AMD64_RDI_REGNUM, /* %rdi */
- AMD64_RSI_REGNUM, /* %rsi */
- AMD64_RDX_REGNUM, /* %rdx */
- AMD64_RCX_REGNUM, /* %rcx */
- 8, /* %r8 */
- 9 /* %r9 */
+ "bnd0raw", "bnd1raw", "bnd2raw", "bnd3raw", "bndcfgu", "bndstatus"
};
/* DWARF Register Number Mapping as defined in the System V psABI,
AMD64_RSP_REGNUM,
/* Extended Integer Registers 8 - 15. */
- 8, 9, 10, 11, 12, 13, 14, 15,
+ AMD64_R8_REGNUM, /* %r8 */
+ AMD64_R9_REGNUM, /* %r9 */
+ AMD64_R10_REGNUM, /* %r10 */
+ AMD64_R11_REGNUM, /* %r11 */
+ AMD64_R12_REGNUM, /* %r12 */
+ AMD64_R13_REGNUM, /* %r13 */
+ AMD64_R14_REGNUM, /* %r14 */
+ AMD64_R15_REGNUM, /* %r15 */
/* Return Address RA. Mapped to RIP. */
AMD64_RIP_REGNUM,
\f
+/* Register classes as defined in the psABI. */
+
+enum amd64_reg_class
+{
+ AMD64_INTEGER,
+ AMD64_SSE,
+ AMD64_SSEUP,
+ AMD64_X87,
+ AMD64_X87UP,
+ AMD64_COMPLEX_X87,
+ AMD64_NO_CLASS,
+ AMD64_MEMORY
+};
+
/* Return the union class of CLASS1 and CLASS2. See the psABI for
details. */
return AMD64_SSE;
}
+static void amd64_classify (struct type *type, enum amd64_reg_class class[2]);
+
/* Return non-zero if TYPE is a non-POD structure or union type. */
static int
/* Classify TYPE, and store the result in CLASS. */
-void
+static void
amd64_classify (struct type *type, enum amd64_reg_class class[2])
{
enum type_code code = TYPE_CODE (type);
struct type *type, struct regcache *regcache,
gdb_byte *readbuf, const gdb_byte *writebuf)
{
- struct gdbarch_tdep *tdep = gdbarch_tdep (gdbarch);
enum amd64_reg_class class[2];
int len = TYPE_LENGTH (type);
static int integer_regnum[] = { AMD64_RAX_REGNUM, AMD64_RDX_REGNUM };
int i;
gdb_assert (!(readbuf && writebuf));
- gdb_assert (tdep->classify);
/* 1. Classify the return type with the classification algorithm. */
- tdep->classify (type, class);
+ amd64_classify (type, class);
/* 2. If the type has class MEMORY, then the caller provides space
for the return value and passes the address of this storage in
amd64_push_arguments (struct regcache *regcache, int nargs,
struct value **args, CORE_ADDR sp, int struct_return)
{
- struct gdbarch *gdbarch = get_regcache_arch (regcache);
- struct gdbarch_tdep *tdep = gdbarch_tdep (gdbarch);
- int *integer_regs = tdep->call_dummy_integer_regs;
- int num_integer_regs = tdep->call_dummy_num_integer_regs;
-
+ static int integer_regnum[] =
+ {
+ AMD64_RDI_REGNUM, /* %rdi */
+ AMD64_RSI_REGNUM, /* %rsi */
+ AMD64_RDX_REGNUM, /* %rdx */
+ AMD64_RCX_REGNUM, /* %rcx */
+ AMD64_R8_REGNUM, /* %r8 */
+ AMD64_R9_REGNUM /* %r9 */
+ };
static int sse_regnum[] =
{
/* %xmm0 ... %xmm7 */
AMD64_XMM0_REGNUM + 6, AMD64_XMM0_REGNUM + 7,
};
struct value **stack_args = alloca (nargs * sizeof (struct value *));
- /* An array that mirrors the stack_args array. For all arguments
- that are passed by MEMORY, if that argument's address also needs
- to be stored in a register, the ARG_ADDR_REGNO array will contain
- that register number (or a negative value otherwise). */
- int *arg_addr_regno = alloca (nargs * sizeof (int));
int num_stack_args = 0;
int num_elements = 0;
int element = 0;
int sse_reg = 0;
int i;
- gdb_assert (tdep->classify);
-
/* Reserve a register for the "hidden" argument. */
if (struct_return)
integer_reg++;
int j;
/* Classify argument. */
- tdep->classify (type, class);
+ amd64_classify (type, class);
/* Calculate the number of integer and SSE registers needed for
this argument. */
/* Check whether enough registers are available, and if the
argument should be passed in registers at all. */
- if (integer_reg + needed_integer_regs > num_integer_regs
+ if (integer_reg + needed_integer_regs > ARRAY_SIZE (integer_regnum)
|| sse_reg + needed_sse_regs > ARRAY_SIZE (sse_regnum)
|| (needed_integer_regs == 0 && needed_sse_regs == 0))
{
/* The argument will be passed on the stack. */
num_elements += ((len + 7) / 8);
- stack_args[num_stack_args] = args[i];
- /* If this is an AMD64_MEMORY argument whose address must also
- be passed in one of the integer registers, reserve that
- register and associate this value to that register so that
- we can store the argument address as soon as we know it. */
- if (class[0] == AMD64_MEMORY
- && tdep->memory_args_by_pointer
- && integer_reg < tdep->call_dummy_num_integer_regs)
- arg_addr_regno[num_stack_args] =
- tdep->call_dummy_integer_regs[integer_reg++];
- else
- arg_addr_regno[num_stack_args] = -1;
- num_stack_args++;
+ stack_args[num_stack_args++] = args[i];
}
else
{
switch (class[j])
{
case AMD64_INTEGER:
- regnum = integer_regs[integer_reg++];
+ regnum = integer_regnum[integer_reg++];
break;
case AMD64_SSE:
{
struct type *type = value_type (stack_args[i]);
const gdb_byte *valbuf = value_contents (stack_args[i]);
- CORE_ADDR arg_addr = sp + element * 8;
-
- write_memory (arg_addr, valbuf, TYPE_LENGTH (type));
- if (arg_addr_regno[i] >= 0)
- {
- /* We also need to store the address of that argument in
- the given register. */
- gdb_byte buf[8];
- enum bfd_endian byte_order = gdbarch_byte_order (gdbarch);
-
- store_unsigned_integer (buf, 8, byte_order, arg_addr);
- regcache_cooked_write (regcache, arg_addr_regno[i], buf);
- }
- element += ((TYPE_LENGTH (type) + 7) / 8);
+ int len = TYPE_LENGTH (type);
+
+ write_memory (sp + element * 8, valbuf, len);
+ element += ((len + 7) / 8);
}
/* The psABI says that "For calls that may call functions that use
int struct_return, CORE_ADDR struct_addr)
{
enum bfd_endian byte_order = gdbarch_byte_order (gdbarch);
- struct gdbarch_tdep *tdep = gdbarch_tdep (gdbarch);
gdb_byte buf[8];
/* Pass arguments. */
/* Pass "hidden" argument". */
if (struct_return)
{
- /* The "hidden" argument is passed throught the first argument
- register. */
- const int arg_regnum = tdep->call_dummy_integer_regs[0];
-
store_unsigned_integer (buf, 8, byte_order, struct_addr);
- regcache_cooked_write (regcache, arg_regnum, buf);
+ regcache_cooked_write (regcache, AMD64_RDI_REGNUM, buf);
}
- /* Reserve some memory on the stack for the integer-parameter registers,
- if required by the ABI. */
- if (tdep->integer_param_regs_saved_in_caller_frame)
- sp -= tdep->call_dummy_num_integer_regs * 8;
-
/* Store return address. */
sp -= 8;
store_unsigned_integer (buf, 8, byte_order, bp_addr);
/* Where "ret" in the original code will return to. */
ret_addr = oldloc + insn_length;
push_buf[0] = 0x68; /* pushq $... */
- memcpy (&push_buf[1], &ret_addr, 4);
+ store_unsigned_integer (&push_buf[1], 4, byte_order, ret_addr);
/* Push the push. */
append_insns (to, 5, push_buf);
int reg, r;
int offset, offset_and;
- if (target_read_memory (pc, buf, sizeof buf))
+ if (target_read_code (pc, buf, sizeof buf))
return pc;
/* Check caller-saved saved register. The first instruction has
else
pc = amd64_analyze_stack_align (pc, current_pc, cache);
- op = read_memory_unsigned_integer (pc, 1, byte_order);
+ op = read_code_unsigned_integer (pc, 1, byte_order);
if (op == 0x55) /* pushq %rbp */
{
if (current_pc <= pc + 1)
return current_pc;
- read_memory (pc + 1, buf, 3);
+ read_code (pc + 1, buf, 3);
/* Check for `movq %rsp, %rbp'. */
if (memcmp (buf, mov_rsp_rbp_1, 3) == 0
return pc;
/* START_PC can be from overlayed memory, ignored here. */
- if (target_read_memory (next_sal.pc - 4, buf, sizeof (buf)) != 0)
+ if (target_read_code (next_sal.pc - 4, buf, sizeof (buf)) != 0)
return pc;
/* test %al,%al */
{
struct amd64_frame_cache cache;
CORE_ADDR pc;
+ CORE_ADDR func_addr;
+
+ if (find_pc_partial_function (start_pc, NULL, &func_addr, NULL))
+ {
+ CORE_ADDR post_prologue_pc
+ = skip_prologue_using_sal (gdbarch, func_addr);
+ struct symtab *s = find_pc_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);
+ }
amd64_init_frame_cache (&cache);
pc = amd64_analyze_prologue (gdbarch, start_pc, 0xffffffffffffffffLL,
amd64_frame_cache (this_frame, this_cache);
if (!cache->base_p)
- return;
-
- /* This marks the outermost frame. */
- if (cache->base == 0)
- return;
-
- (*this_id) = frame_id_build (cache->base + 16, cache->pc);
+ (*this_id) = frame_id_build_unavailable_stack (cache->pc);
+ else if (cache->base == 0)
+ {
+ /* This marks the outermost frame. */
+ return;
+ }
+ else
+ (*this_id) = frame_id_build (cache->base + 16, cache->pc);
}
static struct value *
amd64_sigtramp_frame_cache (this_frame, this_cache);
if (!cache->base_p)
- return;
-
- (*this_id) = frame_id_build (cache->base + 16, get_frame_pc (this_frame));
+ (*this_id) = frame_id_build_unavailable_stack (get_frame_pc (this_frame));
+ else if (cache->base == 0)
+ {
+ /* This marks the outermost frame. */
+ return;
+ }
+ else
+ (*this_id) = frame_id_build (cache->base + 16, get_frame_pc (this_frame));
}
static struct value *
this_cache);
if (!cache->base_p)
- return;
-
- (*this_id) = frame_id_build (cache->base + 8, cache->pc);
+ (*this_id) = frame_id_build_unavailable_stack (cache->pc);
+ else
+ (*this_id) = frame_id_build (cache->base + 8, cache->pc);
}
static const struct frame_unwind amd64_epilogue_frame_unwind =
{
struct gdbarch_tdep *tdep = gdbarch_tdep (gdbarch);
const struct target_desc *tdesc = info.target_desc;
+ static const char *const stap_integer_prefixes[] = { "$", NULL };
+ static const char *const stap_register_prefixes[] = { "%", NULL };
+ static const char *const stap_register_indirection_prefixes[] = { "(",
+ NULL };
+ static const char *const stap_register_indirection_suffixes[] = { ")",
+ NULL };
/* AMD64 generally uses `fxsave' instead of `fsave' for saving its
floating-point registers. */
tdep->ymm0h_regnum = AMD64_YMM0H_REGNUM;
}
+ if (tdesc_find_feature (tdesc, "org.gnu.gdb.i386.mpx") != NULL)
+ {
+ tdep->mpx_register_names = amd64_mpx_names;
+ tdep->bndcfgu_regnum = AMD64_BNDCFGU_REGNUM;
+ tdep->bnd0r_regnum = AMD64_BND0R_REGNUM;
+ }
+
tdep->num_byte_regs = 20;
tdep->num_word_regs = 16;
tdep->num_dword_regs = 16;
set_gdbarch_push_dummy_call (gdbarch, amd64_push_dummy_call);
set_gdbarch_frame_align (gdbarch, amd64_frame_align);
set_gdbarch_frame_red_zone_size (gdbarch, 128);
- tdep->call_dummy_num_integer_regs =
- ARRAY_SIZE (amd64_dummy_call_integer_regs);
- tdep->call_dummy_integer_regs = amd64_dummy_call_integer_regs;
- tdep->classify = amd64_classify;
set_gdbarch_convert_register_p (gdbarch, i387_convert_register_p);
set_gdbarch_register_to_value (gdbarch, i387_register_to_value);
set_gdbarch_gen_return_address (gdbarch, amd64_gen_return_address);
/* SystemTap variables and functions. */
- set_gdbarch_stap_integer_prefix (gdbarch, "$");
- set_gdbarch_stap_register_prefix (gdbarch, "%");
- set_gdbarch_stap_register_indirection_prefix (gdbarch, "(");
- set_gdbarch_stap_register_indirection_suffix (gdbarch, ")");
+ set_gdbarch_stap_integer_prefixes (gdbarch, stap_integer_prefixes);
+ set_gdbarch_stap_register_prefixes (gdbarch, stap_register_prefixes);
+ set_gdbarch_stap_register_indirection_prefixes (gdbarch,
+ stap_register_indirection_prefixes);
+ set_gdbarch_stap_register_indirection_suffixes (gdbarch,
+ stap_register_indirection_suffixes);
set_gdbarch_stap_is_single_operand (gdbarch,
i386_stap_is_single_operand);
set_gdbarch_stap_parse_special_token (gdbarch,
{
initialize_tdesc_amd64 ();
initialize_tdesc_amd64_avx ();
+ initialize_tdesc_amd64_mpx ();
initialize_tdesc_x32 ();
initialize_tdesc_x32_avx ();
}
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