/* Target-dependent code for PowerPC systems using the SVR4 ABI
for GDB, the GNU debugger.
- Copyright (C) 2000, 2001, 2002, 2003, 2005, 2007, 2008
+ Copyright (C) 2000, 2001, 2002, 2003, 2005, 2007, 2008, 2009, 2010
Free Software Foundation, Inc.
This file is part of GDB.
int struct_return, CORE_ADDR struct_addr)
{
struct gdbarch_tdep *tdep = gdbarch_tdep (gdbarch);
+ enum bfd_endian byte_order = gdbarch_byte_order (gdbarch);
ULONGEST saved_sp;
int argspace = 0; /* 0 is an initial wrong guess. */
int write_pass;
}
else if (len == 8
&& (TYPE_CODE (type) == TYPE_CODE_INT /* long long */
- || TYPE_CODE (type) == TYPE_CODE_FLT)) /* double */
+ || TYPE_CODE (type) == TYPE_CODE_FLT /* double */
+ || (TYPE_CODE (type) == TYPE_CODE_DECFLOAT
+ && tdep->soft_float)))
{
- /* "long long" or soft-float "double" passed in an odd/even
- register pair with the low addressed word in the odd
- register and the high addressed word in the even
- register, or when the registers run out an 8 byte
- aligned stack location. */
+ /* "long long" or soft-float "double" or "_Decimal64"
+ passed in an odd/even register pair with the low
+ addressed word in the odd register and the high
+ addressed word in the even register, or when the
+ registers run out an 8 byte aligned stack
+ location. */
if (greg > 9)
{
/* Just in case GREG was 10. */
greg += 2;
}
}
- else if (len == 16 && TYPE_CODE (type) == TYPE_CODE_FLT
- && (gdbarch_long_double_format (gdbarch)
- == floatformats_ibm_long_double))
+ else if (len == 16
+ && ((TYPE_CODE (type) == TYPE_CODE_FLT
+ && (gdbarch_long_double_format (gdbarch)
+ == floatformats_ibm_long_double))
+ || (TYPE_CODE (type) == TYPE_CODE_DECFLOAT
+ && tdep->soft_float)))
{
- /* Soft-float IBM long double passed in four consecutive
- registers, or on the stack. The registers are not
- necessarily odd/even pairs. */
+ /* Soft-float IBM long double or _Decimal128 passed in
+ four consecutive registers, or on the stack. The
+ registers are not necessarily odd/even pairs. */
if (greg > 7)
{
greg = 11;
write_memory (sp + structoffset, val, len);
/* ... and then a "word" pointing to that address is
passed as the parameter. */
- store_unsigned_integer (word, tdep->wordsize,
+ store_unsigned_integer (word, tdep->wordsize, byte_order,
sp + structoffset);
structoffset += len;
}
else if (TYPE_CODE (type) == TYPE_CODE_INT)
/* Sign or zero extend the "int" into a "word". */
- store_unsigned_integer (word, tdep->wordsize,
+ store_unsigned_integer (word, tdep->wordsize, byte_order,
unpack_long (type, val));
else
/* Always goes in the low address. */
regcache_cooked_write_signed (regcache, gdbarch_sp_regnum (gdbarch), sp);
/* Write the backchain (it occupies WORDSIZED bytes). */
- write_memory_signed_integer (sp, tdep->wordsize, saved_sp);
+ write_memory_signed_integer (sp, tdep->wordsize, byte_order, saved_sp);
/* Point the inferior function call's return address at the dummy's
breakpoint. */
const gdb_byte *writebuf, int broken_gcc)
{
struct gdbarch_tdep *tdep = gdbarch_tdep (gdbarch);
+ enum bfd_endian byte_order = gdbarch_byte_order (gdbarch);
gdb_assert (tdep->wordsize == 4);
if (TYPE_CODE (type) == TYPE_CODE_FLT
&& TYPE_LENGTH (type) <= 8
}
return RETURN_VALUE_REGISTER_CONVENTION;
}
- if (TYPE_CODE (type) == TYPE_CODE_FLT
- && TYPE_LENGTH (type) == 16
- && (gdbarch_long_double_format (gdbarch) == floatformats_ibm_long_double))
+ if (TYPE_LENGTH (type) == 16
+ && ((TYPE_CODE (type) == TYPE_CODE_FLT
+ && (gdbarch_long_double_format (gdbarch) == floatformats_ibm_long_double))
+ || (TYPE_CODE (type) == TYPE_CODE_DECFLOAT && tdep->soft_float)))
{
- /* Soft-float IBM long double stored in r3, r4, r5, r6. */
+ /* Soft-float IBM long double or _Decimal128 stored in r3, r4,
+ r5, r6. */
if (readbuf)
{
regcache_cooked_read (regcache, tdep->ppc_gp0_regnum + 3, readbuf);
return RETURN_VALUE_REGISTER_CONVENTION;
}
if ((TYPE_CODE (type) == TYPE_CODE_INT && TYPE_LENGTH (type) == 8)
- || (TYPE_CODE (type) == TYPE_CODE_FLT && TYPE_LENGTH (type) == 8))
+ || (TYPE_CODE (type) == TYPE_CODE_FLT && TYPE_LENGTH (type) == 8)
+ || (TYPE_CODE (type) == TYPE_CODE_DECFLOAT && TYPE_LENGTH (type) == 8
+ && tdep->soft_float))
{
if (readbuf)
{
- /* A long long, or a double stored in the 32 bit r3/r4. */
+ /* A long long, double or _Decimal64 stored in the 32 bit
+ r3/r4. */
regcache_cooked_read (regcache, tdep->ppc_gp0_regnum + 3,
readbuf + 0);
regcache_cooked_read (regcache, tdep->ppc_gp0_regnum + 4,
}
if (writebuf)
{
- /* A long long, or a double stored in the 32 bit r3/r4. */
+ /* A long long, double or _Decimal64 stored in the 32 bit
+ r3/r4. */
regcache_cooked_write (regcache, tdep->ppc_gp0_regnum + 3,
writebuf + 0);
regcache_cooked_write (regcache, tdep->ppc_gp0_regnum + 4,
ULONGEST regval;
regcache_cooked_read_unsigned (regcache, tdep->ppc_gp0_regnum + 3,
®val);
- store_unsigned_integer (readbuf, TYPE_LENGTH (type), regval);
+ store_unsigned_integer (readbuf, TYPE_LENGTH (type), byte_order,
+ regval);
}
if (writebuf)
{
{
CORE_ADDR func_addr = find_function_addr (function, NULL);
struct gdbarch_tdep *tdep = gdbarch_tdep (gdbarch);
+ enum bfd_endian byte_order = gdbarch_byte_order (gdbarch);
ULONGEST back_chain;
/* See for-loop comment below. */
int write_pass;
{
/* During the first pass, GPARAM and VPARAM are more like
offsets (start address zero) than addresses. That way
- the accumulate the total stack space each region
+ they accumulate the total stack space each region
requires. */
gparam = 0;
vparam = 0;
}
else if ((TYPE_CODE (type) == TYPE_CODE_INT
|| TYPE_CODE (type) == TYPE_CODE_ENUM
- || TYPE_CODE (type) == TYPE_CODE_PTR)
+ || TYPE_CODE (type) == TYPE_CODE_BOOL
+ || TYPE_CODE (type) == TYPE_CODE_CHAR
+ || TYPE_CODE (type) == TYPE_CODE_PTR
+ || TYPE_CODE (type) == TYPE_CODE_REF)
&& TYPE_LENGTH (type) <= 8)
{
/* Scalars and Pointers get sign[un]extended and go in
/* Convert any function code addresses into
descriptors. */
if (TYPE_CODE (type) == TYPE_CODE_PTR
- && TYPE_CODE (TYPE_TARGET_TYPE (type)) == TYPE_CODE_FUNC)
+ || TYPE_CODE (type) == TYPE_CODE_REF)
{
- CORE_ADDR desc = word;
- convert_code_addr_to_desc_addr (word, &desc);
- word = desc;
+ struct type *target_type;
+ target_type = check_typedef (TYPE_TARGET_TYPE (type));
+
+ if (TYPE_CODE (target_type) == TYPE_CODE_FUNC
+ || TYPE_CODE (target_type) == TYPE_CODE_METHOD)
+ {
+ CORE_ADDR desc = word;
+ convert_code_addr_to_desc_addr (word, &desc);
+ word = desc;
+ }
}
if (greg <= 10)
regcache_cooked_write_unsigned (regcache,
tdep->ppc_gp0_regnum +
greg, word);
write_memory_unsigned_integer (gparam, tdep->wordsize,
- word);
+ byte_order, word);
}
greg++;
gparam = align_up (gparam + TYPE_LENGTH (type), tdep->wordsize);
greg++;
}
if (write_pass)
- /* WARNING: cagney/2003-09-21: Strictly speaking, this
- isn't necessary, unfortunately, GCC appears to get
- "struct convention" parameter passing wrong putting
- odd sized structures in memory instead of in a
- register. Work around this by always writing the
- value to memory. Fortunately, doing this
- simplifies the code. */
- write_memory (gparam, val, TYPE_LENGTH (type));
+ {
+ /* WARNING: cagney/2003-09-21: Strictly speaking, this
+ isn't necessary, unfortunately, GCC appears to get
+ "struct convention" parameter passing wrong putting
+ odd sized structures in memory instead of in a
+ register. Work around this by always writing the
+ value to memory. Fortunately, doing this
+ simplifies the code. */
+ int len = TYPE_LENGTH (type);
+ if (len < tdep->wordsize)
+ write_memory (gparam + tdep->wordsize - len, val, len);
+ else
+ write_memory (gparam, val, len);
+ }
if (freg <= 13
&& TYPE_CODE (type) == TYPE_CODE_STRUCT
&& TYPE_NFIELDS (type) == 1
regcache_cooked_write_signed (regcache, gdbarch_sp_regnum (gdbarch), sp);
/* Write the backchain (it occupies WORDSIZED bytes). */
- write_memory_signed_integer (sp, tdep->wordsize, back_chain);
+ write_memory_signed_integer (sp, tdep->wordsize, byte_order, back_chain);
/* Point the inferior function call's return address at the dummy's
breakpoint. */
regcache_cooked_write_signed (regcache, tdep->ppc_lr_regnum, bp_addr);
/* Use the func_addr to find the descriptor, and use that to find
- the TOC. */
+ the TOC. If we're calling via a function pointer, the pointer
+ itself identifies the descriptor. */
{
- CORE_ADDR desc_addr;
- if (convert_code_addr_to_desc_addr (func_addr, &desc_addr))
+ struct type *ftype = check_typedef (value_type (function));
+ CORE_ADDR desc_addr = value_as_address (function);
+
+ if (TYPE_CODE (ftype) == TYPE_CODE_PTR
+ || convert_code_addr_to_desc_addr (func_addr, &desc_addr))
{
/* The TOC is the second double word in the descriptor. */
CORE_ADDR toc =
read_memory_unsigned_integer (desc_addr + tdep->wordsize,
- tdep->wordsize);
+ tdep->wordsize, byte_order);
regcache_cooked_write_unsigned (regcache,
tdep->ppc_gp0_regnum + 2, toc);
}
gdb_byte *readbuf, const gdb_byte *writebuf)
{
struct gdbarch_tdep *tdep = gdbarch_tdep (gdbarch);
+ enum bfd_endian byte_order = gdbarch_byte_order (gdbarch);
/* This function exists to support a calling convention that
requires floating-point registers. It shouldn't be used on
writebuf);
/* Integers in r3. */
if ((TYPE_CODE (valtype) == TYPE_CODE_INT
- || TYPE_CODE (valtype) == TYPE_CODE_ENUM)
+ || TYPE_CODE (valtype) == TYPE_CODE_ENUM
+ || TYPE_CODE (valtype) == TYPE_CODE_CHAR
+ || TYPE_CODE (valtype) == TYPE_CODE_BOOL)
&& TYPE_LENGTH (valtype) <= 8)
{
if (writebuf != NULL)
ULONGEST regval;
regcache_cooked_read_unsigned (regcache, tdep->ppc_gp0_regnum + 3,
®val);
- store_unsigned_integer (readbuf, TYPE_LENGTH (valtype), regval);
+ store_unsigned_integer (readbuf, TYPE_LENGTH (valtype), byte_order,
+ regval);
}
return RETURN_VALUE_REGISTER_CONVENTION;
}
/* All pointers live in r3. */
- if (TYPE_CODE (valtype) == TYPE_CODE_PTR)
+ if (TYPE_CODE (valtype) == TYPE_CODE_PTR
+ || TYPE_CODE (valtype) == TYPE_CODE_REF)
{
/* All pointers live in r3. */
if (writebuf != NULL)
return RETURN_VALUE_STRUCT_CONVENTION;
}
-CORE_ADDR
-ppc64_sysv_abi_adjust_breakpoint_address (struct gdbarch *gdbarch,
- CORE_ADDR bpaddr)
-{
- /* PPC64 SYSV specifies that the minimal-symbol "FN" should point at
- a function-descriptor while the corresponding minimal-symbol
- ".FN" should point at the entry point. Consequently, a command
- like "break FN" applied to an object file with only minimal
- symbols, will insert the breakpoint into the descriptor at "FN"
- and not the function at ".FN". Avoid this confusion by adjusting
- any attempt to set a descriptor breakpoint into a corresponding
- function breakpoint. Note that GDB warns the user when this
- adjustment is applied - that's ok as otherwise the user will have
- no way of knowing why their breakpoint at "FN" resulted in the
- program stopping at ".FN". */
- return gdbarch_convert_from_func_ptr_addr (gdbarch, bpaddr, ¤t_target);
-}
projects / deliverable / binutils-gdb.git / blobdiff