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* arm-linux-tdep.c (arm_linux_push_arguments): Delete. 

(arm_linux_init_abi): Don't register it.
This commit is contained in:
Richard Earnshaw 2005-09-01 12:51:23 +00:00
parent 2a9a06c144
commit 8432045646
2 changed files with 6 additions and 142 deletions
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5
gdb/ChangeLog
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@ -1,3 +1,8 @@
2005-09-01 Richard Earnshaw <richard.earnshaw@arm.com>
* arm-linux-tdep.c (arm_linux_push_arguments): Delete.
(arm_linux_init_abi): Don't register it.
2005-08-31 Mark Kettenis <kettenis@gnu.org>
* symfile.c (symbol_file_command, set_initial_language)

143
gdb/arm-linux-tdep.c
View File

@ -75,147 +75,7 @@ arm_linux_extract_return_value (struct type *type,
? ARM_F0_REGNUM : ARM_A1_REGNUM);
memcpy (valbuf, &regbuf[DEPRECATED_REGISTER_BYTE (regnum)], TYPE_LENGTH (type));
}
/* Note: ScottB
This function does not support passing parameters using the FPA
variant of the APCS. It passes any floating point arguments in the
general registers and/or on the stack.
FIXME: This and arm_push_arguments should be merged. However this
function breaks on a little endian host, big endian target
using the COFF file format. ELF is ok.
ScottB. */
/* Addresses for calling Thumb functions have the bit 0 set.
Here are some macros to test, set, or clear bit 0 of addresses. */
#define IS_THUMB_ADDR(addr) ((addr) & 1)
#define MAKE_THUMB_ADDR(addr) ((addr) | 1)
#define UNMAKE_THUMB_ADDR(addr) ((addr) & ~1)
static CORE_ADDR
arm_linux_push_arguments (int nargs, struct value **args, CORE_ADDR sp,
int struct_return, CORE_ADDR struct_addr)
{
char *fp;
int argnum, argreg, nstack_size;
/* Walk through the list of args and determine how large a temporary
stack is required. Need to take care here as structs may be
passed on the stack, and we have to to push them. */
nstack_size = -4 * DEPRECATED_REGISTER_SIZE; /* Some arguments go into A1-A4. */
if (struct_return) /* The struct address goes in A1. */
nstack_size += DEPRECATED_REGISTER_SIZE;
/* Walk through the arguments and add their size to nstack_size. */
for (argnum = 0; argnum < nargs; argnum++)
{
int len;
struct type *arg_type;
arg_type = check_typedef (value_type (args[argnum]));
len = TYPE_LENGTH (arg_type);
/* ANSI C code passes float arguments as integers, K&R code
passes float arguments as doubles. Correct for this here. */
if (TYPE_CODE_FLT == TYPE_CODE (arg_type) && DEPRECATED_REGISTER_SIZE == len)
nstack_size += TARGET_DOUBLE_BIT / TARGET_CHAR_BIT;
else
nstack_size += len;
}
/* Allocate room on the stack, and initialize our stack frame
pointer. */
fp = NULL;
if (nstack_size > 0)
{
sp -= nstack_size;
fp = (char *) sp;
}
/* Initialize the integer argument register pointer. */
argreg = ARM_A1_REGNUM;
/* The struct_return pointer occupies the first parameter passing
register. */
if (struct_return)
write_register (argreg++, struct_addr);
/* Process arguments from left to right. Store as many as allowed
in the parameter passing registers (A1-A4), and save the rest on
the temporary stack. */
for (argnum = 0; argnum < nargs; argnum++)
{
int len;
char *val;
CORE_ADDR regval;
enum type_code typecode;
struct type *arg_type, *target_type;
arg_type = check_typedef (value_type (args[argnum]));
target_type = TYPE_TARGET_TYPE (arg_type);
len = TYPE_LENGTH (arg_type);
typecode = TYPE_CODE (arg_type);
val = (char *) value_contents (args[argnum]);
/* ANSI C code passes float arguments as integers, K&R code
passes float arguments as doubles. The .stabs record for
for ANSI prototype floating point arguments records the
type as FP_INTEGER, while a K&R style (no prototype)
.stabs records the type as FP_FLOAT. In this latter case
the compiler converts the float arguments to double before
calling the function. */
if (TYPE_CODE_FLT == typecode && DEPRECATED_REGISTER_SIZE == len)
{
DOUBLEST dblval;
dblval = deprecated_extract_floating (val, len);
len = TARGET_DOUBLE_BIT / TARGET_CHAR_BIT;
val = alloca (len);
deprecated_store_floating (val, len, dblval);
}
/* If the argument is a pointer to a function, and it is a Thumb
function, set the low bit of the pointer. */
if (TYPE_CODE_PTR == typecode
&& NULL != target_type
&& TYPE_CODE_FUNC == TYPE_CODE (target_type))
{
CORE_ADDR regval = extract_unsigned_integer (val, len);
if (arm_pc_is_thumb (regval))
store_unsigned_integer (val, len, MAKE_THUMB_ADDR (regval));
}
/* Copy the argument to general registers or the stack in
register-sized pieces. Large arguments are split between
registers and stack. */
while (len > 0)
{
int partial_len = len < DEPRECATED_REGISTER_SIZE ? len : DEPRECATED_REGISTER_SIZE;
if (argreg <= ARM_LAST_ARG_REGNUM)
{
/* It's an argument being passed in a general register. */
regval = extract_unsigned_integer (val, partial_len);
write_register (argreg++, regval);
}
else
{
/* Push the arguments onto the stack. */
write_memory ((CORE_ADDR) fp, val, DEPRECATED_REGISTER_SIZE);
fp += DEPRECATED_REGISTER_SIZE;
}
len -= partial_len;
val += partial_len;
}
}
/* Return adjusted stack pointer. */
return sp;
}
/*
Dynamic Linking on ARM GNU/Linux
--------------------------------
@ -489,9 +349,8 @@ arm_linux_init_abi (struct gdbarch_info info,
set_solib_svr4_fetch_link_map_offsets
(gdbarch, arm_linux_svr4_fetch_link_map_offsets);
/* The following two overrides shouldn't be needed. */
/* The following override shouldn't be needed. */
set_gdbarch_deprecated_extract_return_value (gdbarch, arm_linux_extract_return_value);
set_gdbarch_deprecated_push_arguments (gdbarch, arm_linux_push_arguments);
/* Shared library handling. */
set_gdbarch_skip_trampoline_code (gdbarch, find_solib_trampoline_target);