#include "frame.h"
#include "inferior.h"
#include "gdbcore.h"
+#include "objfiles.h"
#include "target.h"
#include "floatformat.h"
#include "symfile.h"
#include "doublest.h"
#include "value.h"
#include "gdb_assert.h"
+#include "reggroups.h"
+#include "dummy-frame.h"
#include "i386-tdep.h"
#include "i387-tdep.h"
#define MM0_REGNUM (NUM_REGS)
static int
-mmx_regnum_p (int reg)
+i386_mmx_regnum_p (int reg)
{
return (reg >= MM0_REGNUM && reg < MM0_REGNUM + mmx_num_regs);
}
+/* FP register? */
+
+int
+i386_fp_regnum_p (int regnum)
+{
+ return (regnum < NUM_REGS
+ && (FP0_REGNUM && FP0_REGNUM <= (regnum) && (regnum) < FPC_REGNUM));
+}
+
+int
+i386_fpc_regnum_p (int regnum)
+{
+ return (regnum < NUM_REGS
+ && (FPC_REGNUM <= (regnum) && (regnum) < XMM0_REGNUM));
+}
+
+/* SSE register? */
+
+int
+i386_sse_regnum_p (int regnum)
+{
+ return (regnum < NUM_REGS
+ && (XMM0_REGNUM <= (regnum) && (regnum) < MXCSR_REGNUM));
+}
+
+int
+i386_mxcsr_regnum_p (int regnum)
+{
+ return (regnum < NUM_REGS
+ && (regnum == MXCSR_REGNUM));
+}
+
/* Return the name of register REG. */
const char *
{
if (reg < 0)
return NULL;
- if (mmx_regnum_p (reg))
+ if (i386_mmx_regnum_p (reg))
return i386_mmx_names[reg - MM0_REGNUM];
if (reg >= sizeof (i386_register_names) / sizeof (*i386_register_names))
return NULL;
frame -- that is, the frame which was in progress when the signal
trampoline was entered. GDB mostly treats this frame pointer value
as a magic cookie. We detect the case of a signal trampoline by
- looking at the SIGNAL_HANDLER_CALLER field, which is set based on
- PC_IN_SIGTRAMP.
+ testing for get_frame_type() == SIGTRAMP_FRAME, which is set based
+ on PC_IN_SIGTRAMP.
When a signal trampoline is invoked from a frameless function, we
essentially have two frameless functions in a row. In this case,
we use the same magic cookie for three frames in a row. We detect
- this case by seeing whether the next frame has
- SIGNAL_HANDLER_CALLER set, and, if it does, checking whether the
- current frame is actually frameless. In this case, we need to get
- the PC by looking at the SP register value stored in the signal
- context.
+ this case by seeing whether the next frame is a SIGTRAMP_FRAME,
+ and, if it does, checking whether the current frame is actually
+ frameless. In this case, we need to get the PC by looking at the
+ SP register value stored in the signal context.
This should work in most cases except in horrible situations where
a signal occurs just as we enter a function but before the frame
/* Return non-zero if we're dealing with a frameless signal, that is,
a signal trampoline invoked from a frameless function. */
-static int
+int
i386_frameless_signal_p (struct frame_info *frame)
{
- return (frame->next && frame->next->signal_handler_caller
+ return (frame->next && get_frame_type (frame->next) == SIGTRAMP_FRAME
&& (frameless_look_for_prologue (frame)
|| frame->pc == get_pc_function_start (frame->pc)));
}
static CORE_ADDR
i386_frame_chain (struct frame_info *frame)
{
- if (PC_IN_CALL_DUMMY (frame->pc, 0, 0))
+ if (pc_in_dummy_frame (frame->pc))
return frame->frame;
- if (frame->signal_handler_caller
+ if (get_frame_type (frame) == SIGTRAMP_FRAME
|| i386_frameless_signal_p (frame))
return frame->frame;
static int
i386_frameless_function_invocation (struct frame_info *frame)
{
- if (frame->signal_handler_caller)
+ if (get_frame_type (frame) == SIGTRAMP_FRAME)
return 0;
return frameless_look_for_prologue (frame);
static CORE_ADDR
i386_frame_saved_pc (struct frame_info *frame)
{
- if (PC_IN_CALL_DUMMY (frame->pc, 0, 0))
- return generic_read_register_dummy (frame->pc, frame->frame,
- PC_REGNUM);
+ if (pc_in_dummy_frame (frame->pc))
+ {
+ ULONGEST pc;
+
+ frame_unwind_unsigned_register (frame, PC_REGNUM, &pc);
+ return pc;
+ }
- if (frame->signal_handler_caller)
+ if (get_frame_type (frame) == SIGTRAMP_FRAME)
return i386_sigtramp_saved_pc (frame);
if (i386_frameless_signal_p (frame))
static CORE_ADDR
i386_saved_pc_after_call (struct frame_info *frame)
{
- if (frame->signal_handler_caller)
+ if (get_frame_type (frame) == SIGTRAMP_FRAME)
return i386_sigtramp_saved_pc (frame);
return read_memory_unsigned_integer (read_register (SP_REGNUM), 4);
int regnum;
char regbuf[I386_MAX_REGISTER_SIZE];
- fp = FRAME_FP (frame);
+ fp = get_frame_base (frame);
i386_frame_init_saved_regs (frame);
for (regnum = 0; regnum < NUM_REGS; regnum++)
if (addr)
{
read_memory (addr, regbuf, REGISTER_RAW_SIZE (regnum));
- write_register_bytes (REGISTER_BYTE (regnum), regbuf,
- REGISTER_RAW_SIZE (regnum));
+ deprecated_write_register_gen (regnum, regbuf);
}
}
write_register (FP_REGNUM, read_memory_integer (fp, 4));
static void
i386_extract_return_value (struct type *type, struct regcache *regcache,
- char *valbuf)
+ void *dst)
{
+ bfd_byte *valbuf = dst;
int len = TYPE_LENGTH (type);
char buf[I386_MAX_REGISTER_SIZE];
in VALBUF of type TYPE, given in virtual format. */
static void
-i386_store_return_value (struct type *type, char *valbuf)
+i386_store_return_value (struct type *type, struct regcache *regcache,
+ const void *valbuf)
{
int len = TYPE_LENGTH (type);
if (TYPE_CODE (type) == TYPE_CODE_STRUCT
&& TYPE_NFIELDS (type) == 1)
{
- i386_store_return_value (TYPE_FIELD_TYPE (type, 0), valbuf);
+ i386_store_return_value (TYPE_FIELD_TYPE (type, 0), regcache, valbuf);
return;
}
if (TYPE_CODE (type) == TYPE_CODE_FLT)
{
- unsigned int fstat;
+ ULONGEST fstat;
char buf[FPU_REG_RAW_SIZE];
if (FP0_REGNUM == 0)
not exactly how it would happen on the target itself, but
it is the best we can do. */
convert_typed_floating (valbuf, type, buf, builtin_type_i387_ext);
- write_register_bytes (REGISTER_BYTE (FP0_REGNUM), buf,
- FPU_REG_RAW_SIZE);
+ regcache_raw_write (regcache, FP0_REGNUM, buf);
/* Set the top of the floating-point register stack to 7. The
actual value doesn't really matter, but 7 is what a normal
function return would end up with if the program started out
with a freshly initialized FPU. */
- fstat = read_register (FSTAT_REGNUM);
+ regcache_raw_read_unsigned (regcache, FSTAT_REGNUM, &fstat);
fstat |= (7 << 11);
- write_register (FSTAT_REGNUM, fstat);
+ regcache_raw_write_unsigned (regcache, FSTAT_REGNUM, fstat);
/* Mark %st(1) through %st(7) as empty. Since we set the top of
the floating-point register stack to 7, the appropriate value
for the tag word is 0x3fff. */
- write_register (FTAG_REGNUM, 0x3fff);
+ regcache_raw_write_unsigned (regcache, FTAG_REGNUM, 0x3fff);
}
else
{
int high_size = REGISTER_RAW_SIZE (HIGH_RETURN_REGNUM);
if (len <= low_size)
- write_register_bytes (REGISTER_BYTE (LOW_RETURN_REGNUM), valbuf, len);
+ regcache_raw_write_part (regcache, LOW_RETURN_REGNUM, 0, len, valbuf);
else if (len <= (low_size + high_size))
{
- write_register_bytes (REGISTER_BYTE (LOW_RETURN_REGNUM),
- valbuf, low_size);
- write_register_bytes (REGISTER_BYTE (HIGH_RETURN_REGNUM),
- valbuf + low_size, len - low_size);
+ regcache_raw_write (regcache, LOW_RETURN_REGNUM, valbuf);
+ regcache_raw_write_part (regcache, HIGH_RETURN_REGNUM, 0,
+ len - low_size, (char *) valbuf + low_size);
}
else
internal_error (__FILE__, __LINE__,
}
}
-/* Extract from an array REGBUF containing the (raw) register state
- the address in which a function should return its structure value,
- as a CORE_ADDR. */
+/* Extract from REGCACHE, which contains the (raw) register state, the
+ address in which a function should return its structure value, as a
+ CORE_ADDR. */
static CORE_ADDR
i386_extract_struct_value_address (struct regcache *regcache)
{
- /* NOTE: cagney/2002-08-12: Replaced a call to
- regcache_raw_read_as_address() with a call to
- regcache_cooked_read_unsigned(). The old, ...as_address function
- was eventually calling extract_unsigned_integer (via
- extract_address) to unpack the registers value. The below is
- doing an unsigned extract so that it is functionally equivalent.
- The read needs to be cooked as, otherwise, it will never
- correctly return the value of a register in the [NUM_REGS
- .. NUM_REGS+NUM_PSEUDO_REGS) range. */
- ULONGEST val;
- regcache_cooked_read_unsigned (regcache, LOW_RETURN_REGNUM, &val);
- return val;
+ ULONGEST addr;
+
+ regcache_raw_read_unsigned (regcache, LOW_RETURN_REGNUM, &addr);
+ return addr;
}
\f
if (regnum == PC_REGNUM || regnum == FP_REGNUM || regnum == SP_REGNUM)
return lookup_pointer_type (builtin_type_void);
- if (IS_FP_REGNUM (regnum))
+ if (i386_fp_regnum_p (regnum))
return builtin_type_i387_ext;
- if (IS_SSE_REGNUM (regnum))
+ if (i386_sse_regnum_p (regnum))
return builtin_type_vec128i;
- if (mmx_regnum_p (regnum))
+ if (i386_mmx_regnum_p (regnum))
return builtin_type_vec64i;
return builtin_type_int;
i386_pseudo_register_read (struct gdbarch *gdbarch, struct regcache *regcache,
int regnum, void *buf)
{
- if (mmx_regnum_p (regnum))
+ if (i386_mmx_regnum_p (regnum))
{
char *mmx_buf = alloca (MAX_REGISTER_RAW_SIZE);
int fpnum = mmx_regnum_to_fp_regnum (regcache, regnum);
i386_pseudo_register_write (struct gdbarch *gdbarch, struct regcache *regcache,
int regnum, const void *buf)
{
- if (mmx_regnum_p (regnum))
+ if (i386_mmx_regnum_p (regnum))
{
char *mmx_buf = alloca (MAX_REGISTER_RAW_SIZE);
int fpnum = mmx_regnum_to_fp_regnum (regcache, regnum);
static int
i386_register_convertible (int regnum)
{
- return IS_FP_REGNUM (regnum);
+ return i386_fp_regnum_p (regnum);
}
/* Convert data from raw format for register REGNUM in buffer FROM to
i386_register_convert_to_virtual (int regnum, struct type *type,
char *from, char *to)
{
- gdb_assert (IS_FP_REGNUM (regnum));
+ gdb_assert (i386_fp_regnum_p (regnum));
/* We only support floating-point values. */
if (TYPE_CODE (type) != TYPE_CODE_FLT)
i386_register_convert_to_raw (struct type *type, int regnum,
char *from, char *to)
{
- gdb_assert (IS_FP_REGNUM (regnum));
+ gdb_assert (i386_fp_regnum_p (regnum));
/* We only support floating-point values. */
if (TYPE_CODE (type) != TYPE_CODE_FLT)
deals with switching between those. */
static int
-gdb_print_insn_i386 (bfd_vma memaddr, disassemble_info *info)
+i386_print_insn (bfd_vma pc, disassemble_info *info)
{
- if (disassembly_flavor == att_flavor)
- return print_insn_i386_att (memaddr, info);
- else if (disassembly_flavor == intel_flavor)
- return print_insn_i386_intel (memaddr, info);
- /* Never reached -- disassembly_flavour is always either att_flavor
- or intel_flavor. */
- internal_error (__FILE__, __LINE__, "failed internal consistency check");
+ gdb_assert (disassembly_flavor == att_flavor
+ || disassembly_flavor == intel_flavor);
+
+ /* FIXME: kettenis/20020915: Until disassembler_options is properly
+ constified, cast to prevent a compiler warning. */
+ info->disassembler_options = (char *) disassembly_flavor;
+ info->mach = gdbarch_bfd_arch_info (current_gdbarch)->mach;
+
+ return print_insn_i386 (pc, info);
}
\f
/* System V Release 4 uses ELF. */
i386_elf_init_abi (info, gdbarch);
+ /* System V Release 4 has shared libraries. */
+ set_gdbarch_in_solib_call_trampoline (gdbarch, in_plt_section);
+ set_gdbarch_skip_trampoline_code (gdbarch, find_solib_trampoline_target);
+
/* FIXME: kettenis/20020511: Why do we override this function here? */
- set_gdbarch_frame_chain_valid (gdbarch, func_frame_chain_valid);
+ set_gdbarch_frame_chain_valid (gdbarch, generic_func_frame_chain_valid);
set_gdbarch_pc_in_sigtramp (gdbarch, i386_svr4_pc_in_sigtramp);
tdep->sigcontext_addr = i386_svr4_sigcontext_addr;
struct gdbarch_tdep *tdep = gdbarch_tdep (gdbarch);
/* FIXME: kettenis/20020511: Why do we override this function here? */
- set_gdbarch_frame_chain_valid (gdbarch, func_frame_chain_valid);
+ set_gdbarch_frame_chain_valid (gdbarch, generic_func_frame_chain_valid);
tdep->jb_pc_offset = 24;
}
\f
+/* i386 register groups. In addition to the normal groups, add "mmx"
+ and "sse". */
+
+static struct reggroup *i386_sse_reggroup;
+static struct reggroup *i386_mmx_reggroup;
+
+static void
+i386_init_reggroups (void)
+{
+ i386_sse_reggroup = reggroup_new ("sse", USER_REGGROUP);
+ i386_mmx_reggroup = reggroup_new ("mmx", USER_REGGROUP);
+}
+
+static void
+i386_add_reggroups (struct gdbarch *gdbarch)
+{
+ reggroup_add (gdbarch, i386_sse_reggroup);
+ reggroup_add (gdbarch, i386_mmx_reggroup);
+ reggroup_add (gdbarch, general_reggroup);
+ reggroup_add (gdbarch, float_reggroup);
+ reggroup_add (gdbarch, all_reggroup);
+ reggroup_add (gdbarch, save_reggroup);
+ reggroup_add (gdbarch, restore_reggroup);
+ reggroup_add (gdbarch, vector_reggroup);
+ reggroup_add (gdbarch, system_reggroup);
+}
+
+int
+i386_register_reggroup_p (struct gdbarch *gdbarch, int regnum,
+ struct reggroup *group)
+{
+ int sse_regnum_p = (i386_sse_regnum_p (regnum)
+ || i386_mxcsr_regnum_p (regnum));
+ int fp_regnum_p = (i386_fp_regnum_p (regnum)
+ || i386_fpc_regnum_p (regnum));
+ int mmx_regnum_p = (i386_mmx_regnum_p (regnum));
+ if (group == i386_mmx_reggroup)
+ return mmx_regnum_p;
+ if (group == i386_sse_reggroup)
+ return sse_regnum_p;
+ if (group == vector_reggroup)
+ return (mmx_regnum_p || sse_regnum_p);
+ if (group == float_reggroup)
+ return fp_regnum_p;
+ if (group == general_reggroup)
+ return (!fp_regnum_p && !mmx_regnum_p && !sse_regnum_p);
+ return default_register_reggroup_p (gdbarch, regnum, group);
+}
+
+\f
static struct gdbarch *
i386_gdbarch_init (struct gdbarch_info info, struct gdbarch_list *arches)
{
tdep = XMALLOC (struct gdbarch_tdep);
gdbarch = gdbarch_alloc (&info, tdep);
+ /* NOTE: cagney/2002-12-06: This can be deleted when this arch is
+ ready to unwind the PC first (see frame.c:get_prev_frame()). */
+ set_gdbarch_deprecated_init_frame_pc (gdbarch, init_frame_pc_default);
+
tdep->osabi = osabi;
/* The i386 default settings don't include the SSE registers.
on having a `long double' that's not `long' at all. */
set_gdbarch_long_double_format (gdbarch, &floatformat_i387_ext);
- /* Although the i386 extended floating-point has only 80 significant
+ /* Although the i387 extended floating-point has only 80 significant
bits, a `long double' actually takes up 96, probably to enforce
alignment. */
set_gdbarch_long_double_bit (gdbarch, 96);
tm-symmetry.h currently override this. Sigh. */
set_gdbarch_num_regs (gdbarch, I386_NUM_GREGS + I386_NUM_FREGS);
- set_gdbarch_sp_regnum (gdbarch, 4);
- set_gdbarch_fp_regnum (gdbarch, 5);
- set_gdbarch_pc_regnum (gdbarch, 8);
- set_gdbarch_ps_regnum (gdbarch, 9);
- set_gdbarch_fp0_regnum (gdbarch, 16);
+ set_gdbarch_sp_regnum (gdbarch, 4); /* %esp */
+ set_gdbarch_fp_regnum (gdbarch, 5); /* %ebp */
+ set_gdbarch_pc_regnum (gdbarch, 8); /* %eip */
+ set_gdbarch_ps_regnum (gdbarch, 9); /* %eflags */
+ set_gdbarch_fp0_regnum (gdbarch, 16); /* %st(0) */
/* Use the "default" register numbering scheme for stabs and COFF. */
set_gdbarch_stab_reg_to_regnum (gdbarch, i386_stab_reg_to_regnum);
set_gdbarch_get_longjmp_target (gdbarch, i386_get_longjmp_target);
- set_gdbarch_use_generic_dummy_frames (gdbarch, 1);
-
/* Call dummy code. */
- set_gdbarch_call_dummy_location (gdbarch, AT_ENTRY_POINT);
set_gdbarch_call_dummy_address (gdbarch, entry_point_address);
set_gdbarch_call_dummy_start_offset (gdbarch, 0);
set_gdbarch_call_dummy_breakpoint_offset (gdbarch, 0);
i386_register_convert_to_virtual);
set_gdbarch_register_convert_to_raw (gdbarch, i386_register_convert_to_raw);
- set_gdbarch_get_saved_register (gdbarch, generic_unwind_get_saved_register);
- set_gdbarch_push_arguments (gdbarch, i386_push_arguments);
-
- set_gdbarch_pc_in_call_dummy (gdbarch, pc_in_call_dummy_at_entry_point);
-
/* "An argument's size is increased, if necessary, to make it a
multiple of [32-bit] words. This may require tail padding,
depending on the size of the argument" -- from the x86 ABI. */
set_gdbarch_frame_chain (gdbarch, i386_frame_chain);
set_gdbarch_frame_chain_valid (gdbarch, generic_file_frame_chain_valid);
set_gdbarch_frame_saved_pc (gdbarch, i386_frame_saved_pc);
- set_gdbarch_frame_args_address (gdbarch, default_frame_address);
- set_gdbarch_frame_locals_address (gdbarch, default_frame_address);
set_gdbarch_saved_pc_after_call (gdbarch, i386_saved_pc_after_call);
set_gdbarch_frame_num_args (gdbarch, i386_frame_num_args);
set_gdbarch_pc_in_sigtramp (gdbarch, i386_pc_in_sigtramp);
set_gdbarch_pseudo_register_read (gdbarch, i386_pseudo_register_read);
set_gdbarch_pseudo_register_write (gdbarch, i386_pseudo_register_write);
+ set_gdbarch_print_insn (gdbarch, i386_print_insn);
+
+ /* Add the i386 register groups. */
+ i386_add_reggroups (gdbarch);
+ set_gdbarch_register_reggroup_p (gdbarch, i386_register_reggroup_p);
+
/* Hook in ABI-specific overrides, if they have been registered. */
gdbarch_init_osabi (info, gdbarch, osabi);
{
register_gdbarch_init (bfd_arch_i386, i386_gdbarch_init);
- tm_print_insn = gdb_print_insn_i386;
- tm_print_insn_info.mach = bfd_lookup_arch (bfd_arch_i386, 0)->mach;
-
/* Add the variable that controls the disassembly flavor. */
{
struct cmd_list_element *new_cmd;
struct cmd_list_element *new_cmd;
new_cmd = add_set_enum_cmd ("struct-convention", no_class,
- valid_conventions,
+ valid_conventions,
&struct_convention, "\
Set the convention for returning small structs, valid values \
are \"default\", \"pcc\" and \"reg\", and the default value is \"default\".",
gdbarch_register_osabi_sniffer (bfd_arch_i386, bfd_target_nlm_flavour,
i386_nlm_osabi_sniffer);
- gdbarch_register_osabi (bfd_arch_i386, GDB_OSABI_SVR4,
+ gdbarch_register_osabi (bfd_arch_i386, 0, GDB_OSABI_SVR4,
i386_svr4_init_abi);
- gdbarch_register_osabi (bfd_arch_i386, GDB_OSABI_GO32,
+ gdbarch_register_osabi (bfd_arch_i386, 0, GDB_OSABI_GO32,
i386_go32_init_abi);
- gdbarch_register_osabi (bfd_arch_i386, GDB_OSABI_NETWARE,
+ gdbarch_register_osabi (bfd_arch_i386, 0, GDB_OSABI_NETWARE,
i386_nw_init_abi);
+
+ /* Initialize the i386 specific register groups. */
+ i386_init_reggroups ();
}
projects / deliverable / binutils-gdb.git / blobdiff