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authorChih-hung Hsieh <chh@google.com>2015-09-25 14:51:48 +0000
committerGerrit Code Review <noreply-gerritcodereview@google.com>2015-09-25 14:51:48 +0000
commitb0121c5547604527aaeea297b54047cd14b234df (patch)
tree7d9031ee3d5796de4a1825892fc6e04ba6e36ae2 /src/backends/ppc_retval.c
parentd03895cf5f8b77c6a85abcd84ea0d80ff56be846 (diff)
parent5eafdf0f9bfd9a3c5f93414ac16bb399b6da0b7f (diff)
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Merge "Move files up to match upstream source structure."
Diffstat (limited to 'src/backends/ppc_retval.c')
-rw-r--r--src/backends/ppc_retval.c191
1 files changed, 0 insertions, 191 deletions
diff --git a/src/backends/ppc_retval.c b/src/backends/ppc_retval.c
deleted file mode 100644
index b14a99f1..00000000
--- a/src/backends/ppc_retval.c
+++ /dev/null
@@ -1,191 +0,0 @@
-/* Function return value location for Linux/PPC ABI.
- Copyright (C) 2005, 2006, 2007, 2010, 2014 Red Hat, Inc.
- This file is part of elfutils.
-
- This file is free software; you can redistribute it and/or modify
- it under the terms of either
-
- * the GNU Lesser General Public License as published by the Free
- Software Foundation; either version 3 of the License, or (at
- your option) any later version
-
- or
-
- * the GNU General Public License as published by the Free
- Software Foundation; either version 2 of the License, or (at
- your option) any later version
-
- or both in parallel, as here.
-
- elfutils is distributed in the hope that it will be useful, but
- WITHOUT ANY WARRANTY; without even the implied warranty of
- MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
- General Public License for more details.
-
- You should have received copies of the GNU General Public License and
- the GNU Lesser General Public License along with this program. If
- not, see <http://www.gnu.org/licenses/>. */
-
-#ifdef HAVE_CONFIG_H
-# include <config.h>
-#endif
-
-#include <assert.h>
-#include <dwarf.h>
-
-#define BACKEND ppc_
-#include "libebl_CPU.h"
-
-
-/* This is the SVR4 ELF ABI convention, but AIX and Linux do not use it. */
-#define SVR4_STRUCT_RETURN 0
-
-
-/* r3, or pair r3, r4, or quad r3-r6. */
-static const Dwarf_Op loc_intreg[] =
- {
- { .atom = DW_OP_reg3 }, { .atom = DW_OP_piece, .number = 4 },
- { .atom = DW_OP_reg4 }, { .atom = DW_OP_piece, .number = 4 },
- { .atom = DW_OP_reg5 }, { .atom = DW_OP_piece, .number = 4 },
- { .atom = DW_OP_reg6 }, { .atom = DW_OP_piece, .number = 4 },
- };
-#define nloc_intreg 1
-#define nloc_intregpair 4
-#define nloc_intregquad 8
-
-/* f1. */
-static const Dwarf_Op loc_fpreg[] =
- {
- { .atom = DW_OP_regx, .number = 33 }
- };
-#define nloc_fpreg 1
-
-/* vr2. */
-static const Dwarf_Op loc_vmxreg[] =
- {
- { .atom = DW_OP_regx, .number = 1124 + 2 }
- };
-#define nloc_vmxreg 1
-
-/* The return value is a structure and is actually stored in stack space
- passed in a hidden argument by the caller. But, the compiler
- helpfully returns the address of that space in r3. */
-static const Dwarf_Op loc_aggregate[] =
- {
- { .atom = DW_OP_breg3, .number = 0 }
- };
-#define nloc_aggregate 1
-
-
-/* XXX We should check the SHT_GNU_ATTRIBUTES bits here (or in ppc_init). */
-static bool
-ppc_altivec_abi (void)
-{
- return true;
-}
-
-int
-ppc_return_value_location (Dwarf_Die *functypedie, const Dwarf_Op **locp)
-{
- /* Start with the function's type, and get the DW_AT_type attribute,
- which is the type of the return value. */
- Dwarf_Die die_mem, *typedie = &die_mem;
- int tag = dwarf_peeled_die_type (functypedie, typedie);
- if (tag <= 0)
- return tag;
-
- Dwarf_Word size;
- switch (tag)
- {
- case -1:
- return -1;
-
- case DW_TAG_subrange_type:
- if (! dwarf_hasattr_integrate (typedie, DW_AT_byte_size))
- {
- Dwarf_Attribute attr_mem, *attr;
- attr = dwarf_attr_integrate (typedie, DW_AT_type, &attr_mem);
- typedie = dwarf_formref_die (attr, &die_mem);
- tag = DWARF_TAG_OR_RETURN (typedie);
- }
- /* Fall through. */
-
- case DW_TAG_base_type:
- case DW_TAG_enumeration_type:
- case DW_TAG_pointer_type:
- case DW_TAG_ptr_to_member_type:
- {
- Dwarf_Attribute attr_mem;
- if (dwarf_formudata (dwarf_attr_integrate (typedie, DW_AT_byte_size,
- &attr_mem), &size) != 0)
- {
- if (tag == DW_TAG_pointer_type || tag == DW_TAG_ptr_to_member_type)
- size = 4;
- else
- return -1;
- }
- }
-
- if (size <= 8)
- {
- if (tag == DW_TAG_base_type)
- {
- Dwarf_Attribute attr_mem;
- Dwarf_Word encoding;
- if (dwarf_formudata (dwarf_attr_integrate (typedie,
- DW_AT_encoding,
- &attr_mem),
- &encoding) != 0)
- return -1;
- if (encoding == DW_ATE_float)
- {
- *locp = loc_fpreg;
- return nloc_fpreg;
- }
- }
- intreg:
- *locp = loc_intreg;
- return size <= 4 ? nloc_intreg : nloc_intregpair;
- }
-
- aggregate:
- *locp = loc_aggregate;
- return nloc_aggregate;
-
- case DW_TAG_array_type:
- {
- Dwarf_Attribute attr_mem;
- bool is_vector;
- if (dwarf_formflag (dwarf_attr_integrate (typedie, DW_AT_GNU_vector,
- &attr_mem), &is_vector) == 0
- && is_vector
- && dwarf_aggregate_size (typedie, &size) == 0)
- switch (size)
- {
- case 16:
- if (ppc_altivec_abi ())
- {
- *locp = loc_vmxreg;
- return nloc_vmxreg;
- }
- *locp = loc_intreg;
- return nloc_intregquad;
- }
- }
- /* Fall through. */
-
- case DW_TAG_structure_type:
- case DW_TAG_class_type:
- case DW_TAG_union_type:
- if (SVR4_STRUCT_RETURN
- && dwarf_aggregate_size (typedie, &size) == 0
- && size > 0 && size <= 8)
- goto intreg;
- goto aggregate;
- }
-
- /* XXX We don't have a good way to return specific errors from ebl calls.
- This value means we do not understand the type, but it is well-formed
- DWARF and might be valid. */
- return -2;
-}