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author | Chih-hung Hsieh <chh@google.com> | 2015-09-25 14:51:48 +0000 |
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committer | Gerrit Code Review <noreply-gerritcodereview@google.com> | 2015-09-25 14:51:48 +0000 |
commit | b0121c5547604527aaeea297b54047cd14b234df (patch) | |
tree | 7d9031ee3d5796de4a1825892fc6e04ba6e36ae2 /src/backends/ppc_retval.c | |
parent | d03895cf5f8b77c6a85abcd84ea0d80ff56be846 (diff) | |
parent | 5eafdf0f9bfd9a3c5f93414ac16bb399b6da0b7f (diff) | |
download | android_external_elfutils-b0121c5547604527aaeea297b54047cd14b234df.tar.gz android_external_elfutils-b0121c5547604527aaeea297b54047cd14b234df.tar.bz2 android_external_elfutils-b0121c5547604527aaeea297b54047cd14b234df.zip |
Merge "Move files up to match upstream source structure."
Diffstat (limited to 'src/backends/ppc_retval.c')
-rw-r--r-- | src/backends/ppc_retval.c | 191 |
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; -} |