Boston, MA 02111-1307, USA. */
#include "defs.h"
+#include "doublest.h"
#include "frame.h"
#include "frame-unwind.h"
#include "frame-base.h"
#include "gdb_string.h"
#include "linespec.h"
#include "regcache.h"
-#include "doublest.h"
+#include "reggroups.h"
#include "arch-utils.h"
#include "osabi.h"
#include "block.h"
"f8", "f9", "f10", "f11", "f12", "f13", "f14", "f15",
"f16", "f17", "f18", "f19", "f20", "f21", "f22", "f23",
"f24", "f25", "f26", "f27", "f28", "f29", "f30", "fpcr",
- "pc", "vfp", "unique",
+ "pc", "", "unique"
};
if (regno < 0)
static int
alpha_cannot_fetch_register (int regno)
{
- return (regno == ALPHA_FP_REGNUM || regno == ALPHA_ZERO_REGNUM);
+ return regno == ALPHA_ZERO_REGNUM;
}
static int
alpha_cannot_store_register (int regno)
{
- return (regno == ALPHA_FP_REGNUM || regno == ALPHA_ZERO_REGNUM);
+ return regno == ALPHA_ZERO_REGNUM;
}
static int
static struct type *
alpha_register_virtual_type (int regno)
{
- return ((regno >= FP0_REGNUM && regno < (FP0_REGNUM+31))
- ? builtin_type_double : builtin_type_long);
+ if (regno == ALPHA_SP_REGNUM || regno == ALPHA_GP_REGNUM)
+ return builtin_type_void_data_ptr;
+ if (regno == ALPHA_PC_REGNUM)
+ return builtin_type_void_func_ptr;
+
+ /* Don't need to worry about little vs big endian until
+ some jerk tries to port to alpha-unicosmk. */
+ if (regno >= FP0_REGNUM && regno < FP0_REGNUM + 31)
+ return builtin_type_ieee_double_little;
+
+ return builtin_type_int64;
+}
+
+/* Is REGNUM a member of REGGROUP? */
+
+static int
+alpha_register_reggroup_p (struct gdbarch *gdbarch, int regnum,
+ struct reggroup *group)
+{
+ /* Filter out any registers eliminated, but whose regnum is
+ reserved for backward compatibility, e.g. the vfp. */
+ if (REGISTER_NAME (regnum) == NULL || *REGISTER_NAME (regnum) == '\0')
+ return 0;
+
+ /* Since we implement no pseudo registers, save/restore is equal to all. */
+ if (group == all_reggroup
+ || group == save_reggroup
+ || group == restore_reggroup)
+ return 1;
+
+ /* All other groups are non-overlapping. */
+
+ /* Since this is really a PALcode memory slot... */
+ if (regnum == ALPHA_UNIQUE_REGNUM)
+ return group == system_reggroup;
+
+ /* Force the FPCR to be considered part of the floating point state. */
+ if (regnum == ALPHA_FPCR_REGNUM)
+ return group == float_reggroup;
+
+ if (regnum >= ALPHA_FP0_REGNUM && regnum < ALPHA_FP0_REGNUM + 31)
+ return group == float_reggroup;
+ else
+ return group == general_reggroup;
}
static int
bytes or less, as the representation of integers in floating point
registers is different. */
+static void
+alpha_convert_flt_dbl (void *out, const void *in)
+{
+ DOUBLEST d = extract_typed_floating (in, builtin_type_ieee_single_little);
+ store_typed_floating (out, builtin_type_ieee_double_little, d);
+}
+
+static void
+alpha_convert_dbl_flt (void *out, const void *in)
+{
+ DOUBLEST d = extract_typed_floating (in, builtin_type_ieee_double_little);
+ store_typed_floating (out, builtin_type_ieee_single_little, d);
+}
+
static void
alpha_register_convert_to_virtual (int regnum, struct type *valtype,
char *raw_buffer, char *virtual_buffer)
{
- if (TYPE_LENGTH (valtype) >= REGISTER_RAW_SIZE (regnum))
+ if (TYPE_LENGTH (valtype) >= ALPHA_REGISTER_SIZE)
{
- memcpy (virtual_buffer, raw_buffer, REGISTER_VIRTUAL_SIZE (regnum));
+ memcpy (virtual_buffer, raw_buffer, ALPHA_REGISTER_SIZE);
return;
}
+ /* Note that everything below is less than 8 bytes long. */
+
if (TYPE_CODE (valtype) == TYPE_CODE_FLT)
- {
- double d = deprecated_extract_floating (raw_buffer, REGISTER_RAW_SIZE (regnum));
- deprecated_store_floating (virtual_buffer, TYPE_LENGTH (valtype), d);
- }
- else if (TYPE_CODE (valtype) == TYPE_CODE_INT && TYPE_LENGTH (valtype) <= 4)
+ alpha_convert_dbl_flt (virtual_buffer, raw_buffer);
+ else if (TYPE_CODE (valtype) == TYPE_CODE_INT)
{
ULONGEST l;
- l = extract_unsigned_integer (raw_buffer, REGISTER_RAW_SIZE (regnum));
+ l = extract_unsigned_integer (raw_buffer, ALPHA_REGISTER_SIZE);
l = ((l >> 32) & 0xc0000000) | ((l >> 29) & 0x3fffffff);
store_unsigned_integer (virtual_buffer, TYPE_LENGTH (valtype), l);
}
alpha_register_convert_to_raw (struct type *valtype, int regnum,
char *virtual_buffer, char *raw_buffer)
{
- if (TYPE_LENGTH (valtype) >= REGISTER_RAW_SIZE (regnum))
+ if (TYPE_LENGTH (valtype) >= ALPHA_REGISTER_SIZE)
{
- memcpy (raw_buffer, virtual_buffer, REGISTER_RAW_SIZE (regnum));
+ memcpy (raw_buffer, virtual_buffer, ALPHA_REGISTER_SIZE);
return;
}
+ /* Note that everything below is less than 8 bytes long. */
+
if (TYPE_CODE (valtype) == TYPE_CODE_FLT)
+ alpha_convert_flt_dbl (raw_buffer, virtual_buffer);
+ else if (TYPE_CODE (valtype) == TYPE_CODE_INT)
{
- double d = deprecated_extract_floating (virtual_buffer, TYPE_LENGTH (valtype));
- deprecated_store_floating (raw_buffer, REGISTER_RAW_SIZE (regnum), d);
- }
- else if (TYPE_CODE (valtype) == TYPE_CODE_INT && TYPE_LENGTH (valtype) <= 4)
- {
- ULONGEST l;
- if (TYPE_UNSIGNED (valtype))
- l = extract_unsigned_integer (virtual_buffer, TYPE_LENGTH (valtype));
- else
- l = extract_signed_integer (virtual_buffer, TYPE_LENGTH (valtype));
+ ULONGEST l = unpack_long (valtype, virtual_buffer);
l = ((l & 0xc0000000) << 32) | ((l & 0x3fffffff) << 29);
- store_unsigned_integer (raw_buffer, REGISTER_RAW_SIZE (regnum), l);
+ store_unsigned_integer (raw_buffer, ALPHA_REGISTER_SIZE, l);
}
else
error ("Cannot store value in floating point register");
case TYPE_CODE_CHAR:
case TYPE_CODE_RANGE:
case TYPE_CODE_ENUM:
- if (TYPE_LENGTH (arg_type) < TYPE_LENGTH (builtin_type_long))
+ if (TYPE_LENGTH (arg_type) == 4)
+ {
+ /* 32-bit values must be sign-extended to 64 bits
+ even if the base data type is unsigned. */
+ arg_type = builtin_type_int32;
+ arg = value_cast (arg_type, arg);
+ }
+ if (TYPE_LENGTH (arg_type) < ALPHA_REGISTER_SIZE)
{
- arg_type = builtin_type_long;
+ arg_type = builtin_type_int64;
arg = value_cast (arg_type, arg);
}
break;
+
case TYPE_CODE_FLT:
/* "float" arguments loaded in registers must be passed in
register format, aka "double". */
if (accumulate_size < sizeof (arg_reg_buffer)
&& TYPE_LENGTH (arg_type) == 4)
{
- arg_type = builtin_type_double;
+ arg_type = builtin_type_ieee_double_little;
arg = value_cast (arg_type, arg);
}
/* Tru64 5.1 has a 128-bit long double, and passes this by
arg = value_from_pointer (arg_type, sp);
}
break;
+
+ case TYPE_CODE_COMPLEX:
+ /* ??? The ABI says that complex values are passed as two
+ separate scalar values. This distinction only matters
+ for complex float. However, GCC does not implement this. */
+
+ /* Tru64 5.1 has a 128-bit long double, and passes this by
+ invisible reference. */
+ if (TYPE_LENGTH (arg_type) == 32)
+ {
+ /* Allocate aligned storage. */
+ sp = (sp & -16) - 16;
+
+ /* Write the real data into the stack. */
+ write_memory (sp, VALUE_CONTENTS (arg), 32);
+
+ /* Construct the indirection. */
+ arg_type = lookup_pointer_type (arg_type);
+ arg = value_from_pointer (arg_type, sp);
+ }
+ break;
+
default:
break;
}
return sp;
}
-/* Given a return value in `regbuf' with a type `valtype',
- extract and copy its value into `valbuf'. */
+/* Extract from REGCACHE the value about to be returned from a function
+ and copy it into VALBUF. */
static void
-alpha_extract_return_value (struct type *valtype,
- char regbuf[ALPHA_REGISTER_BYTES], char *valbuf)
+alpha_extract_return_value (struct type *valtype, struct regcache *regcache,
+ void *valbuf)
{
- if (TYPE_CODE (valtype) == TYPE_CODE_FLT)
- alpha_register_convert_to_virtual (FP0_REGNUM, valtype,
- regbuf + REGISTER_BYTE (FP0_REGNUM),
- valbuf);
- else
- memcpy (valbuf, regbuf + REGISTER_BYTE (ALPHA_V0_REGNUM),
- TYPE_LENGTH (valtype));
+ int length = TYPE_LENGTH (valtype);
+ char raw_buffer[ALPHA_REGISTER_SIZE];
+ ULONGEST l;
+
+ switch (TYPE_CODE (valtype))
+ {
+ case TYPE_CODE_FLT:
+ switch (length)
+ {
+ case 4:
+ regcache_cooked_read (regcache, ALPHA_FP0_REGNUM, raw_buffer);
+ alpha_convert_dbl_flt (valbuf, raw_buffer);
+ break;
+
+ case 8:
+ regcache_cooked_read (regcache, ALPHA_FP0_REGNUM, valbuf);
+ break;
+
+ case 16:
+ regcache_cooked_read_unsigned (regcache, ALPHA_V0_REGNUM, &l);
+ read_memory (l, valbuf, 16);
+ break;
+
+ default:
+ internal_error (__FILE__, __LINE__, "unknown floating point width");
+ }
+ break;
+
+ case TYPE_CODE_COMPLEX:
+ switch (length)
+ {
+ case 8:
+ /* ??? This isn't correct wrt the ABI, but it's what GCC does. */
+ regcache_cooked_read (regcache, ALPHA_FP0_REGNUM, valbuf);
+ break;
+
+ case 16:
+ regcache_cooked_read (regcache, ALPHA_FP0_REGNUM, valbuf);
+ regcache_cooked_read (regcache, ALPHA_FP0_REGNUM+1,
+ (char *)valbuf + 8);
+ break;
+
+ case 32:
+ regcache_cooked_read_signed (regcache, ALPHA_V0_REGNUM, &l);
+ read_memory (l, valbuf, 32);
+ break;
+
+ default:
+ internal_error (__FILE__, __LINE__, "unknown floating point width");
+ }
+ break;
+
+ default:
+ /* Assume everything else degenerates to an integer. */
+ regcache_cooked_read_unsigned (regcache, ALPHA_V0_REGNUM, &l);
+ store_unsigned_integer (valbuf, length, l);
+ break;
+ }
+}
+
+/* Extract from REGCACHE the address of a structure about to be returned
+ from a function. */
+
+static CORE_ADDR
+alpha_extract_struct_value_address (struct regcache *regcache)
+{
+ ULONGEST addr;
+ regcache_cooked_read_unsigned (regcache, ALPHA_V0_REGNUM, &addr);
+ return addr;
}
-/* Given a return value in `regbuf' with a type `valtype',
- write its value into the appropriate register. */
+/* Insert the given value into REGCACHE as if it was being
+ returned by a function. */
static void
-alpha_store_return_value (struct type *valtype, char *valbuf)
+alpha_store_return_value (struct type *valtype, struct regcache *regcache,
+ const void *valbuf)
{
- char raw_buffer[ALPHA_REGISTER_SIZE];
- int regnum = ALPHA_V0_REGNUM;
int length = TYPE_LENGTH (valtype);
+ char raw_buffer[ALPHA_REGISTER_SIZE];
+ ULONGEST l;
- if (TYPE_CODE (valtype) == TYPE_CODE_FLT)
+ switch (TYPE_CODE (valtype))
{
- regnum = FP0_REGNUM;
- length = ALPHA_REGISTER_SIZE;
- alpha_register_convert_to_raw (valtype, regnum, valbuf, raw_buffer);
- }
- else
- memcpy (raw_buffer, valbuf, length);
+ case TYPE_CODE_FLT:
+ switch (length)
+ {
+ case 4:
+ alpha_convert_flt_dbl (raw_buffer, valbuf);
+ regcache_cooked_write (regcache, ALPHA_FP0_REGNUM, raw_buffer);
+ break;
- deprecated_write_register_bytes (REGISTER_BYTE (regnum), raw_buffer, length);
+ case 8:
+ regcache_cooked_write (regcache, ALPHA_FP0_REGNUM, valbuf);
+ break;
+
+ case 16:
+ /* FIXME: 128-bit long doubles are returned like structures:
+ by writing into indirect storage provided by the caller
+ as the first argument. */
+ error ("Cannot set a 128-bit long double return value.");
+
+ default:
+ internal_error (__FILE__, __LINE__, "unknown floating point width");
+ }
+ break;
+
+ case TYPE_CODE_COMPLEX:
+ switch (length)
+ {
+ case 8:
+ /* ??? This isn't correct wrt the ABI, but it's what GCC does. */
+ regcache_cooked_write (regcache, ALPHA_FP0_REGNUM, valbuf);
+ break;
+
+ case 16:
+ regcache_cooked_write (regcache, ALPHA_FP0_REGNUM, valbuf);
+ regcache_cooked_write (regcache, ALPHA_FP0_REGNUM+1,
+ (const char *)valbuf + 8);
+ break;
+
+ case 32:
+ /* FIXME: 128-bit long doubles are returned like structures:
+ by writing into indirect storage provided by the caller
+ as the first argument. */
+ error ("Cannot set a 128-bit long double return value.");
+
+ default:
+ internal_error (__FILE__, __LINE__, "unknown floating point width");
+ }
+ break;
+
+ default:
+ /* Assume everything else degenerates to an integer. */
+ /* 32-bit values must be sign-extended to 64 bits
+ even if the base data type is unsigned. */
+ if (length == 4)
+ valtype = builtin_type_int32;
+ l = unpack_long (valtype, valbuf);
+ regcache_cooked_write_unsigned (regcache, ALPHA_V0_REGNUM, l);
+ break;
+ }
}
static int
return 1;
}
-static void
-alpha_store_struct_return (CORE_ADDR addr, CORE_ADDR sp)
-{
- /* Store the address of the place in which to copy the structure the
- subroutine will return. Handled by alpha_push_arguments. */
-}
-
-static CORE_ADDR
-alpha_extract_struct_value_address (char *regbuf)
-{
- return (extract_address (regbuf + REGISTER_BYTE (ALPHA_V0_REGNUM),
- REGISTER_RAW_SIZE (ALPHA_V0_REGNUM)));
-}
-
\f
static const unsigned char *
alpha_breakpoint_from_pc (CORE_ADDR *pcptr, int *lenptr)
raw_buffer, tdep->jb_elt_size))
return 0;
- *pc = extract_address (raw_buffer, tdep->jb_elt_size);
+ *pc = extract_unsigned_integer (raw_buffer, tdep->jb_elt_size);
return 1;
}
return pc;
}
+\f
+/* Helper routines for alpha*-nat.c files to move register sets to and
+ from core files. The UNIQUE pointer is allowed to be NULL, as most
+ targets don't supply this value in their core files. */
+
+void
+alpha_supply_int_regs (int regno, const void *r0_r30,
+ const void *pc, const void *unique)
+{
+ int i;
+
+ for (i = 0; i < 31; ++i)
+ if (regno == i || regno == -1)
+ supply_register (i, (const char *)r0_r30 + i*8);
+
+ if (regno == ALPHA_ZERO_REGNUM || regno == -1)
+ supply_register (ALPHA_ZERO_REGNUM, NULL);
+
+ if (regno == ALPHA_PC_REGNUM || regno == -1)
+ supply_register (ALPHA_PC_REGNUM, pc);
+
+ if (regno == ALPHA_UNIQUE_REGNUM || regno == -1)
+ supply_register (ALPHA_UNIQUE_REGNUM, unique);
+}
+
+void
+alpha_fill_int_regs (int regno, void *r0_r30, void *pc, void *unique)
+{
+ int i;
+
+ for (i = 0; i < 31; ++i)
+ if (regno == i || regno == -1)
+ regcache_collect (i, (char *)r0_r30 + i*8);
+
+ if (regno == ALPHA_PC_REGNUM || regno == -1)
+ regcache_collect (ALPHA_PC_REGNUM, pc);
+
+ if (unique && (regno == ALPHA_UNIQUE_REGNUM || regno == -1))
+ regcache_collect (ALPHA_UNIQUE_REGNUM, unique);
+}
+
+void
+alpha_supply_fp_regs (int regno, const void *f0_f30, const void *fpcr)
+{
+ int i;
+
+ for (i = ALPHA_FP0_REGNUM; i < ALPHA_FP0_REGNUM + 31; ++i)
+ if (regno == i || regno == -1)
+ supply_register (i, (const char *)f0_f30 + (i - ALPHA_FP0_REGNUM) * 8);
+
+ if (regno == ALPHA_FPCR_REGNUM || regno == -1)
+ supply_register (ALPHA_FPCR_REGNUM, fpcr);
+}
+
+void
+alpha_fill_fp_regs (int regno, void *f0_f30, void *fpcr)
+{
+ int i;
+
+ for (i = ALPHA_FP0_REGNUM; i < ALPHA_FP0_REGNUM + 31; ++i)
+ if (regno == i || regno == -1)
+ regcache_collect (i, (char *)f0_f30 + (i - ALPHA_FP0_REGNUM) * 8);
+
+ if (regno == ALPHA_FPCR_REGNUM || regno == -1)
+ regcache_collect (ALPHA_FPCR_REGNUM, fpcr);
+}
+
\f
/* alpha_software_single_step() is called just before we want to resume
the inferior, if we want to single-step it but there is no hardware
alpha_register_convert_to_virtual);
set_gdbarch_register_convert_to_raw (gdbarch, alpha_register_convert_to_raw);
+ set_gdbarch_register_reggroup_p (gdbarch, alpha_register_reggroup_p);
+
/* Prologue heuristics. */
set_gdbarch_skip_prologue (gdbarch, alpha_skip_prologue);
+ /* Disassembler. */
+ set_gdbarch_print_insn (gdbarch, print_insn_alpha);
+
/* Call info. */
set_gdbarch_frame_num_args (gdbarch, frame_num_args_unknown);
set_gdbarch_frameless_function_invocation (gdbarch,
generic_frameless_function_invocation_not);
set_gdbarch_use_struct_convention (gdbarch, alpha_use_struct_convention);
- set_gdbarch_deprecated_extract_return_value (gdbarch, alpha_extract_return_value);
- set_gdbarch_deprecated_store_struct_return (gdbarch, alpha_store_struct_return);
- set_gdbarch_deprecated_store_return_value (gdbarch, alpha_store_return_value);
- set_gdbarch_deprecated_extract_struct_value_address (gdbarch,
+ set_gdbarch_extract_return_value (gdbarch, alpha_extract_return_value);
+ set_gdbarch_store_return_value (gdbarch, alpha_store_return_value);
+ set_gdbarch_extract_struct_value_address (gdbarch,
alpha_extract_struct_value_address);
/* Settings for calling functions in the inferior. */
struct cmd_list_element *c;
gdbarch_register (bfd_arch_alpha, alpha_gdbarch_init, NULL);
- deprecated_tm_print_insn = print_insn_alpha;
/* Let the user set the fence post for heuristic_proc_start. */
projects / deliverable / binutils-gdb.git / blobdiff