/* 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.
static void
amd64_classify_aggregate (struct type *type, enum amd64_reg_class class[2])
{
- int len = TYPE_LENGTH (type);
-
/* 1. If the size of an object is larger than two eightbytes, or in
C++, is a non-POD structure or union type, or contains
unaligned fields, it has class memory. */
- if (len > 16 || amd64_non_pod_p (type))
+ if (TYPE_LENGTH (type) > 16 || amd64_non_pod_p (type))
{
class[0] = class[1] = AMD64_MEMORY;
return;
/* All fields in an array have the same type. */
amd64_classify (subtype, class);
- if (len > 8 && class[1] == AMD64_NO_CLASS)
+ if (TYPE_LENGTH (type) > 8 && class[1] == AMD64_NO_CLASS)
class[1] = class[0];
}
else
/* Class X87 and X87UP. */
class[0] = AMD64_X87, class[1] = AMD64_X87UP;
+ /* Arguments of complex T where T is one of the types float or
+ double get treated as if they are implemented as:
+
+ struct complexT {
+ T real;
+ T imag;
+ }; */
+ else if (code == TYPE_CODE_COMPLEX && len == 8)
+ class[0] = AMD64_SSE;
+ else if (code == TYPE_CODE_COMPLEX && len == 16)
+ class[0] = class[1] = AMD64_SSE;
+
+ /* A variable of type complex long double is classified as type
+ COMPLEX_X87. */
+ else if (code == TYPE_CODE_COMPLEX && len == 32)
+ class[0] = AMD64_COMPLEX_X87;
+
/* Aggregates. */
else if (code == TYPE_CODE_ARRAY || code == TYPE_CODE_STRUCT
|| code == TYPE_CODE_UNION)
return RETURN_VALUE_ABI_RETURNS_ADDRESS;
}
+ /* 8. If the class is COMPLEX_X87, the real part of the value is
+ returned in %st0 and the imaginary part in %st1. */
+ if (class[0] == AMD64_COMPLEX_X87)
+ {
+ if (readbuf)
+ {
+ regcache_raw_read (regcache, AMD64_ST0_REGNUM, readbuf);
+ regcache_raw_read (regcache, AMD64_ST1_REGNUM, readbuf + 16);
+ }
+
+ if (writebuf)
+ {
+ i387_return_value (gdbarch, regcache);
+ regcache_raw_write (regcache, AMD64_ST0_REGNUM, writebuf);
+ regcache_raw_write (regcache, AMD64_ST1_REGNUM, writebuf + 16);
+
+ /* Fix up the tag word such that both %st(0) and %st(1) are
+ marked as valid. */
+ regcache_raw_write_unsigned (regcache, AMD64_FTAG_REGNUM, 0xfff);
+ }
+
+ return RETURN_VALUE_REGISTER_CONVENTION;
+ }
+
gdb_assert (class[1] != AMD64_MEMORY);
gdb_assert (len <= 16);
{
struct type *type = value_type (stack_args[i]);
const gdb_byte *valbuf = value_contents (stack_args[i]);
- int len = TYPE_LENGTH (type);
CORE_ADDR arg_addr = sp + element * 8;
- write_memory (arg_addr, valbuf, len);
+ 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
store_unsigned_integer (buf, 8, byte_order, arg_addr);
regcache_cooked_write (regcache, arg_addr_regno[i], buf);
}
- element += ((len + 7) / 8);
+ element += ((TYPE_LENGTH (type) + 7) / 8);
}
/* The psABI says that "For calls that may call functions that use
/* 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);
{
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,
tdesc = tdesc_x32;
tdep->tdesc = tdesc;
- tdep->sp_regnum_from_eax = AMD64_RSP_REGNUM;
- tdep->pc_regnum_from_eax = AMD64_RIP_REGNUM;
-
tdep->num_dword_regs = 17;
set_tdesc_pseudo_register_type (gdbarch, amd64_x32_pseudo_register_type);