| From 7e0b036d087dfff7f5e306f52fc78745f99454c3 Mon Sep 17 00:00:00 2001 |
| From: Hongxu Jia <hongxu.jia@windriver.com> |
| Date: Wed, 21 Aug 2019 15:49:52 +0800 |
| Subject: [PATCH] mips backend |
| |
| Rebase to 0.177 |
| Upstream-Status: Pending [from debian] |
| |
| Signed-off-by: Hongxu Jia <hongxu.jia@windriver.com> |
| |
| --- |
| backends/Makefile.am | 6 +- |
| backends/mips_init.c | 59 ++++++++ |
| backends/mips_regs.c | 104 +++++++++++++ |
| backends/mips_reloc.def | 79 ++++++++++ |
| backends/mips_retval.c | 321 ++++++++++++++++++++++++++++++++++++++++ |
| backends/mips_symbol.c | 53 +++++++ |
| libebl/eblopenbackend.c | 3 + |
| 7 files changed, 623 insertions(+), 2 deletions(-) |
| create mode 100644 backends/mips_init.c |
| create mode 100644 backends/mips_regs.c |
| create mode 100644 backends/mips_reloc.def |
| create mode 100644 backends/mips_retval.c |
| create mode 100644 backends/mips_symbol.c |
| |
| diff --git a/backends/Makefile.am b/backends/Makefile.am |
| index 4755f61..07d45d7 100644 |
| --- a/backends/Makefile.am |
| +++ b/backends/Makefile.am |
| @@ -37,7 +37,7 @@ AM_CPPFLAGS += -I$(top_srcdir)/libebl -I$(top_srcdir)/libasm \ |
| noinst_LIBRARIES = libebl_backends.a libebl_backends_pic.a |
| |
| modules = i386 sh x86_64 ia64 alpha arm aarch64 sparc ppc ppc64 s390 \ |
| - tilegx m68k bpf riscv csky parisc |
| + tilegx m68k bpf riscv csky parisc mips |
| |
| parisc_SRCS = parisc_init.c parisc_symbol.c parisc_regs.c parisc_retval.c |
| |
| @@ -100,12 +100,14 @@ riscv_SRCS = riscv_init.c riscv_symbol.c riscv_cfi.c riscv_regs.c \ |
| csky_SRCS = csky_attrs.c csky_init.c csky_symbol.c csky_cfi.c \ |
| csky_regs.c csky_initreg.c csky_corenote.c |
| |
| +mips_SRCS = mips_init.c mips_symbol.c mips_regs.c mips_retval.c |
| + |
| libebl_backends_a_SOURCES = $(i386_SRCS) $(sh_SRCS) $(x86_64_SRCS) \ |
| $(ia64_SRCS) $(alpha_SRCS) $(arm_SRCS) \ |
| $(aarch64_SRCS) $(sparc_SRCS) $(ppc_SRCS) \ |
| $(ppc64_SRCS) $(s390_SRCS) $(tilegx_SRCS) \ |
| $(m68k_SRCS) $(bpf_SRCS) $(riscv_SRCS) $(csky_SRCS) \ |
| - $(parisc_SRCS) |
| + $(parisc_SRCS) $(mips_SRCS) |
| |
| libebl_backends_pic_a_SOURCES = |
| am_libebl_backends_pic_a_OBJECTS = $(libebl_backends_a_SOURCES:.c=.os) |
| diff --git a/backends/mips_init.c b/backends/mips_init.c |
| new file mode 100644 |
| index 0000000..975c04e |
| --- /dev/null |
| +++ b/backends/mips_init.c |
| @@ -0,0 +1,59 @@ |
| +/* Initialization of mips specific backend library. |
| + Copyright (C) 2006 Red Hat, Inc. |
| + This file is part of Red Hat elfutils. |
| + |
| + Red Hat elfutils is free software; you can redistribute it and/or modify |
| + it under the terms of the GNU General Public License as published by the |
| + Free Software Foundation; version 2 of the License. |
| + |
| + Red Hat 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 a copy of the GNU General Public License along |
| + with Red Hat elfutils; if not, write to the Free Software Foundation, |
| + Inc., 51 Franklin Street, Fifth Floor, Boston MA 02110-1301 USA. |
| + |
| + Red Hat elfutils is an included package of the Open Invention Network. |
| + An included package of the Open Invention Network is a package for which |
| + Open Invention Network licensees cross-license their patents. No patent |
| + license is granted, either expressly or impliedly, by designation as an |
| + included package. Should you wish to participate in the Open Invention |
| + Network licensing program, please visit www.openinventionnetwork.com |
| + <http://www.openinventionnetwork.com>. */ |
| + |
| +#ifdef HAVE_CONFIG_H |
| +# include <config.h> |
| +#endif |
| + |
| +#define BACKEND mips_ |
| +#define RELOC_PREFIX R_MIPS_ |
| +#include "libebl_CPU.h" |
| + |
| +/* This defines the common reloc hooks based on mips_reloc.def. */ |
| +#include "common-reloc.c" |
| + |
| +const char * |
| +mips_init (Elf *elf __attribute__ ((unused)), |
| + GElf_Half machine __attribute__ ((unused)), |
| + Ebl *eh, |
| + size_t ehlen) |
| +{ |
| + /* Check whether the Elf_BH object has a sufficent size. */ |
| + if (ehlen < sizeof (Ebl)) |
| + return NULL; |
| + |
| + /* We handle it. */ |
| + if (machine == EM_MIPS) |
| + eh->name = "MIPS R3000 big-endian"; |
| + else if (machine == EM_MIPS_RS3_LE) |
| + eh->name = "MIPS R3000 little-endian"; |
| + |
| + mips_init_reloc (eh); |
| + HOOK (eh, reloc_simple_type); |
| + HOOK (eh, return_value_location); |
| + HOOK (eh, register_info); |
| + |
| + return MODVERSION; |
| +} |
| diff --git a/backends/mips_regs.c b/backends/mips_regs.c |
| new file mode 100644 |
| index 0000000..44f86cb |
| --- /dev/null |
| +++ b/backends/mips_regs.c |
| @@ -0,0 +1,104 @@ |
| +/* Register names and numbers for MIPS DWARF. |
| + Copyright (C) 2006 Red Hat, Inc. |
| + This file is part of Red Hat elfutils. |
| + |
| + Red Hat elfutils is free software; you can redistribute it and/or modify |
| + it under the terms of the GNU General Public License as published by the |
| + Free Software Foundation; version 2 of the License. |
| + |
| + Red Hat 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 a copy of the GNU General Public License along |
| + with Red Hat elfutils; if not, write to the Free Software Foundation, |
| + Inc., 51 Franklin Street, Fifth Floor, Boston MA 02110-1301 USA. |
| + |
| + Red Hat elfutils is an included package of the Open Invention Network. |
| + An included package of the Open Invention Network is a package for which |
| + Open Invention Network licensees cross-license their patents. No patent |
| + license is granted, either expressly or impliedly, by designation as an |
| + included package. Should you wish to participate in the Open Invention |
| + Network licensing program, please visit www.openinventionnetwork.com |
| + <http://www.openinventionnetwork.com>. */ |
| + |
| +#ifdef HAVE_CONFIG_H |
| +# include <config.h> |
| +#endif |
| + |
| +#include <string.h> |
| +#include <dwarf.h> |
| + |
| +#define BACKEND mips_ |
| +#include "libebl_CPU.h" |
| + |
| +ssize_t |
| +mips_register_info (Ebl *ebl __attribute__((unused)), |
| + int regno, char *name, size_t namelen, |
| + const char **prefix, const char **setname, |
| + int *bits, int *type) |
| +{ |
| + if (name == NULL) |
| + return 66; |
| + |
| + if (regno < 0 || regno > 65 || namelen < 4) |
| + return -1; |
| + |
| + *prefix = "$"; |
| + |
| + if (regno < 32) |
| + { |
| + *setname = "integer"; |
| + *type = DW_ATE_signed; |
| + *bits = 32; |
| + if (regno < 32 + 10) |
| + { |
| + name[0] = regno + '0'; |
| + namelen = 1; |
| + } |
| + else |
| + { |
| + name[0] = (regno / 10) + '0'; |
| + name[1] = (regno % 10) + '0'; |
| + namelen = 2; |
| + } |
| + } |
| + else if (regno < 64) |
| + { |
| + *setname = "FPU"; |
| + *type = DW_ATE_float; |
| + *bits = 32; |
| + name[0] = 'f'; |
| + if (regno < 32 + 10) |
| + { |
| + name[1] = (regno - 32) + '0'; |
| + namelen = 2; |
| + } |
| + else |
| + { |
| + name[1] = (regno - 32) / 10 + '0'; |
| + name[2] = (regno - 32) % 10 + '0'; |
| + namelen = 3; |
| + } |
| + } |
| + else if (regno == 64) |
| + { |
| + *type = DW_ATE_signed; |
| + *bits = 32; |
| + name[0] = 'h'; |
| + name[1] = 'i'; |
| + namelen = 2; |
| + } |
| + else |
| + { |
| + *type = DW_ATE_signed; |
| + *bits = 32; |
| + name[0] = 'l'; |
| + name[1] = 'o'; |
| + namelen = 2; |
| + } |
| + |
| + name[namelen++] = '\0'; |
| + return namelen; |
| +} |
| diff --git a/backends/mips_reloc.def b/backends/mips_reloc.def |
| new file mode 100644 |
| index 0000000..4579970 |
| --- /dev/null |
| +++ b/backends/mips_reloc.def |
| @@ -0,0 +1,79 @@ |
| +/* List the relocation types for mips. -*- C -*- |
| + Copyright (C) 2006 Red Hat, Inc. |
| + This file is part of Red Hat elfutils. |
| + |
| + Red Hat elfutils is free software; you can redistribute it and/or modify |
| + it under the terms of the GNU General Public License as published by the |
| + Free Software Foundation; version 2 of the License. |
| + |
| + Red Hat 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 a copy of the GNU General Public License along |
| + with Red Hat elfutils; if not, write to the Free Software Foundation, |
| + Inc., 51 Franklin Street, Fifth Floor, Boston MA 02110-1301 USA. |
| + |
| + Red Hat elfutils is an included package of the Open Invention Network. |
| + An included package of the Open Invention Network is a package for which |
| + Open Invention Network licensees cross-license their patents. No patent |
| + license is granted, either expressly or impliedly, by designation as an |
| + included package. Should you wish to participate in the Open Invention |
| + Network licensing program, please visit www.openinventionnetwork.com |
| + <http://www.openinventionnetwork.com>. */ |
| + |
| +/* NAME, REL|EXEC|DYN */ |
| + |
| +RELOC_TYPE (NONE, 0) |
| +RELOC_TYPE (16, 0) |
| +RELOC_TYPE (32, 0) |
| +RELOC_TYPE (REL32, 0) |
| +RELOC_TYPE (26, 0) |
| +RELOC_TYPE (HI16, 0) |
| +RELOC_TYPE (LO16, 0) |
| +RELOC_TYPE (GPREL16, 0) |
| +RELOC_TYPE (LITERAL, 0) |
| +RELOC_TYPE (GOT16, 0) |
| +RELOC_TYPE (PC16, 0) |
| +RELOC_TYPE (CALL16, 0) |
| +RELOC_TYPE (GPREL32, 0) |
| + |
| +RELOC_TYPE (SHIFT5, 0) |
| +RELOC_TYPE (SHIFT6, 0) |
| +RELOC_TYPE (64, 0) |
| +RELOC_TYPE (GOT_DISP, 0) |
| +RELOC_TYPE (GOT_PAGE, 0) |
| +RELOC_TYPE (GOT_OFST, 0) |
| +RELOC_TYPE (GOT_HI16, 0) |
| +RELOC_TYPE (GOT_LO16, 0) |
| +RELOC_TYPE (SUB, 0) |
| +RELOC_TYPE (INSERT_A, 0) |
| +RELOC_TYPE (INSERT_B, 0) |
| +RELOC_TYPE (DELETE, 0) |
| +RELOC_TYPE (HIGHER, 0) |
| +RELOC_TYPE (HIGHEST, 0) |
| +RELOC_TYPE (CALL_HI16, 0) |
| +RELOC_TYPE (CALL_LO16, 0) |
| +RELOC_TYPE (SCN_DISP, 0) |
| +RELOC_TYPE (REL16, 0) |
| +RELOC_TYPE (ADD_IMMEDIATE, 0) |
| +RELOC_TYPE (PJUMP, 0) |
| +RELOC_TYPE (RELGOT, 0) |
| +RELOC_TYPE (JALR, 0) |
| +RELOC_TYPE (TLS_DTPMOD32, 0) |
| +RELOC_TYPE (TLS_DTPREL32, 0) |
| +RELOC_TYPE (TLS_DTPMOD64, 0) |
| +RELOC_TYPE (TLS_DTPREL64, 0) |
| +RELOC_TYPE (TLS_GD, 0) |
| +RELOC_TYPE (TLS_LDM, 0) |
| +RELOC_TYPE (TLS_DTPREL_HI16, 0) |
| +RELOC_TYPE (TLS_DTPREL_LO16, 0) |
| +RELOC_TYPE (TLS_GOTTPREL, 0) |
| +RELOC_TYPE (TLS_TPREL32, 0) |
| +RELOC_TYPE (TLS_TPREL64, 0) |
| +RELOC_TYPE (TLS_TPREL_HI16, 0) |
| +RELOC_TYPE (TLS_TPREL_LO16, 0) |
| + |
| +#define NO_COPY_RELOC 1 |
| +#define NO_RELATIVE_RELOC 1 |
| diff --git a/backends/mips_retval.c b/backends/mips_retval.c |
| new file mode 100644 |
| index 0000000..656cd1f |
| --- /dev/null |
| +++ b/backends/mips_retval.c |
| @@ -0,0 +1,321 @@ |
| +/* Function return value location for Linux/mips ABI. |
| + Copyright (C) 2005 Red Hat, Inc. |
| + This file is part of Red Hat elfutils. |
| + |
| + Red Hat elfutils is free software; you can redistribute it and/or modify |
| + it under the terms of the GNU General Public License as published by the |
| + Free Software Foundation; version 2 of the License. |
| + |
| + Red Hat 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 a copy of the GNU General Public License along |
| + with Red Hat elfutils; if not, write to the Free Software Foundation, |
| + Inc., 51 Franklin Street, Fifth Floor, Boston MA 02110-1301 USA. |
| + |
| + Red Hat elfutils is an included package of the Open Invention Network. |
| + An included package of the Open Invention Network is a package for which |
| + Open Invention Network licensees cross-license their patents. No patent |
| + license is granted, either expressly or impliedly, by designation as an |
| + included package. Should you wish to participate in the Open Invention |
| + Network licensing program, please visit www.openinventionnetwork.com |
| + <http://www.openinventionnetwork.com>. */ |
| + |
| +#ifdef HAVE_CONFIG_H |
| +# include <config.h> |
| +#endif |
| + |
| +#include <string.h> |
| +#include <assert.h> |
| +#include <dwarf.h> |
| +#include <elf.h> |
| + |
| +#include "../libebl/libeblP.h" |
| +#include "../libdw/libdwP.h" |
| + |
| +#define BACKEND mips_ |
| +#include "libebl_CPU.h" |
| + |
| +/* The ABI of the file. Also see EF_MIPS_ABI2 above. */ |
| +#define EF_MIPS_ABI 0x0000F000 |
| + |
| +/* The original o32 abi. */ |
| +#define E_MIPS_ABI_O32 0x00001000 |
| + |
| +/* O32 extended to work on 64 bit architectures */ |
| +#define E_MIPS_ABI_O64 0x00002000 |
| + |
| +/* EABI in 32 bit mode */ |
| +#define E_MIPS_ABI_EABI32 0x00003000 |
| + |
| +/* EABI in 64 bit mode */ |
| +#define E_MIPS_ABI_EABI64 0x00004000 |
| + |
| +/* All the possible MIPS ABIs. */ |
| +enum mips_abi |
| + { |
| + MIPS_ABI_UNKNOWN = 0, |
| + MIPS_ABI_N32, |
| + MIPS_ABI_O32, |
| + MIPS_ABI_N64, |
| + MIPS_ABI_O64, |
| + MIPS_ABI_EABI32, |
| + MIPS_ABI_EABI64, |
| + MIPS_ABI_LAST |
| + }; |
| + |
| +/* Find the mips ABI of the current file */ |
| +enum mips_abi find_mips_abi(Elf *elf) |
| +{ |
| + GElf_Ehdr ehdr_mem; |
| + GElf_Ehdr *ehdr = gelf_getehdr (elf, &ehdr_mem); |
| + |
| + if (ehdr == NULL) |
| + return MIPS_ABI_LAST; |
| + |
| + GElf_Word elf_flags = ehdr->e_flags; |
| + |
| + /* Check elf_flags to see if it specifies the ABI being used. */ |
| + switch ((elf_flags & EF_MIPS_ABI)) |
| + { |
| + case E_MIPS_ABI_O32: |
| + return MIPS_ABI_O32; |
| + case E_MIPS_ABI_O64: |
| + return MIPS_ABI_O64; |
| + case E_MIPS_ABI_EABI32: |
| + return MIPS_ABI_EABI32; |
| + case E_MIPS_ABI_EABI64: |
| + return MIPS_ABI_EABI64; |
| + default: |
| + if ((elf_flags & EF_MIPS_ABI2)) |
| + return MIPS_ABI_N32; |
| + } |
| + |
| + /* GCC creates a pseudo-section whose name describes the ABI. */ |
| + size_t shstrndx; |
| + if (elf_getshdrstrndx (elf, &shstrndx) < 0) |
| + return MIPS_ABI_LAST; |
| + |
| + const char *name; |
| + Elf_Scn *scn = NULL; |
| + while ((scn = elf_nextscn (elf, scn)) != NULL) |
| + { |
| + GElf_Shdr shdr_mem; |
| + GElf_Shdr *shdr = gelf_getshdr (scn, &shdr_mem); |
| + if (shdr == NULL) |
| + return MIPS_ABI_LAST; |
| + |
| + name = elf_strptr (elf, shstrndx, shdr->sh_name) ?: ""; |
| + if (strncmp (name, ".mdebug.", 8) != 0) |
| + continue; |
| + |
| + if (strcmp (name, ".mdebug.abi32") == 0) |
| + return MIPS_ABI_O32; |
| + else if (strcmp (name, ".mdebug.abiN32") == 0) |
| + return MIPS_ABI_N32; |
| + else if (strcmp (name, ".mdebug.abi64") == 0) |
| + return MIPS_ABI_N64; |
| + else if (strcmp (name, ".mdebug.abiO64") == 0) |
| + return MIPS_ABI_O64; |
| + else if (strcmp (name, ".mdebug.eabi32") == 0) |
| + return MIPS_ABI_EABI32; |
| + else if (strcmp (name, ".mdebug.eabi64") == 0) |
| + return MIPS_ABI_EABI64; |
| + else |
| + return MIPS_ABI_UNKNOWN; |
| + } |
| + |
| + return MIPS_ABI_UNKNOWN; |
| +} |
| + |
| +unsigned int |
| +mips_abi_regsize (enum mips_abi abi) |
| +{ |
| + switch (abi) |
| + { |
| + case MIPS_ABI_EABI32: |
| + case MIPS_ABI_O32: |
| + return 4; |
| + case MIPS_ABI_N32: |
| + case MIPS_ABI_N64: |
| + case MIPS_ABI_O64: |
| + case MIPS_ABI_EABI64: |
| + return 8; |
| + case MIPS_ABI_UNKNOWN: |
| + case MIPS_ABI_LAST: |
| + default: |
| + return 0; |
| + } |
| +} |
| + |
| + |
| +/* $v0 or pair $v0, $v1 */ |
| +static const Dwarf_Op loc_intreg_o32[] = |
| + { |
| + { .atom = DW_OP_reg2 }, { .atom = DW_OP_piece, .number = 4 }, |
| + { .atom = DW_OP_reg3 }, { .atom = DW_OP_piece, .number = 4 }, |
| + }; |
| + |
| +static const Dwarf_Op loc_intreg[] = |
| + { |
| + { .atom = DW_OP_reg2 }, { .atom = DW_OP_piece, .number = 8 }, |
| + { .atom = DW_OP_reg3 }, { .atom = DW_OP_piece, .number = 8 }, |
| + }; |
| +#define nloc_intreg 1 |
| +#define nloc_intregpair 4 |
| + |
| +/* $f0 (float), or pair $f0, $f1 (double). |
| + * f2/f3 are used for COMPLEX (= 2 doubles) returns in Fortran */ |
| +static const Dwarf_Op loc_fpreg_o32[] = |
| + { |
| + { .atom = DW_OP_regx, .number = 32 }, { .atom = DW_OP_piece, .number = 4 }, |
| + { .atom = DW_OP_regx, .number = 33 }, { .atom = DW_OP_piece, .number = 4 }, |
| + { .atom = DW_OP_regx, .number = 34 }, { .atom = DW_OP_piece, .number = 4 }, |
| + { .atom = DW_OP_regx, .number = 35 }, { .atom = DW_OP_piece, .number = 4 }, |
| + }; |
| + |
| +/* $f0, or pair $f0, $f2. */ |
| +static const Dwarf_Op loc_fpreg[] = |
| + { |
| + { .atom = DW_OP_regx, .number = 32 }, { .atom = DW_OP_piece, .number = 8 }, |
| + { .atom = DW_OP_regx, .number = 34 }, { .atom = DW_OP_piece, .number = 8 }, |
| + }; |
| +#define nloc_fpreg 1 |
| +#define nloc_fpregpair 4 |
| +#define nloc_fpregquad 8 |
| + |
| +/* 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 $v0. */ |
| +static const Dwarf_Op loc_aggregate[] = |
| + { |
| + { .atom = DW_OP_breg2, .number = 0 } |
| + }; |
| +#define nloc_aggregate 1 |
| + |
| +int |
| +mips_return_value_location (Dwarf_Die *functypedie, const Dwarf_Op **locp) |
| +{ |
| + /* First find the ABI used by the elf object */ |
| + enum mips_abi abi = find_mips_abi(functypedie->cu->dbg->elf); |
| + |
| + /* Something went seriously wrong while trying to figure out the ABI */ |
| + if (abi == MIPS_ABI_LAST) |
| + return -1; |
| + |
| + /* We couldn't identify the ABI, but the file seems valid */ |
| + if (abi == MIPS_ABI_UNKNOWN) |
| + return -2; |
| + |
| + /* Can't handle EABI variants */ |
| + if ((abi == MIPS_ABI_EABI32) || (abi == MIPS_ABI_EABI64)) |
| + return -2; |
| + |
| + unsigned int regsize = mips_abi_regsize (abi); |
| + if (!regsize) |
| + return -2; |
| + |
| + /* Start with the function's type, and get the DW_AT_type attribute, |
| + which is the type of the return value. */ |
| + |
| + Dwarf_Attribute attr_mem; |
| + Dwarf_Attribute *attr = dwarf_attr_integrate (functypedie, DW_AT_type, &attr_mem); |
| + if (attr == NULL) |
| + /* The function has no return value, like a `void' function in C. */ |
| + return 0; |
| + |
| + Dwarf_Die die_mem; |
| + Dwarf_Die *typedie = dwarf_formref_die (attr, &die_mem); |
| + int tag = dwarf_tag (typedie); |
| + |
| + /* Follow typedefs and qualifiers to get to the actual type. */ |
| + while (tag == DW_TAG_typedef |
| + || tag == DW_TAG_const_type || tag == DW_TAG_volatile_type |
| + || tag == DW_TAG_restrict_type) |
| + { |
| + attr = dwarf_attr_integrate (typedie, DW_AT_type, &attr_mem); |
| + typedie = dwarf_formref_die (attr, &die_mem); |
| + tag = dwarf_tag (typedie); |
| + } |
| + |
| + switch (tag) |
| + { |
| + case -1: |
| + return -1; |
| + |
| + case DW_TAG_subrange_type: |
| + if (! dwarf_hasattr_integrate (typedie, DW_AT_byte_size)) |
| + { |
| + attr = dwarf_attr_integrate (typedie, DW_AT_type, &attr_mem); |
| + typedie = dwarf_formref_die (attr, &die_mem); |
| + tag = dwarf_tag (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_Word size; |
| + 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 = regsize; |
| + else |
| + return -1; |
| + } |
| + if (tag == DW_TAG_base_type) |
| + { |
| + Dwarf_Word encoding; |
| + if (dwarf_formudata (dwarf_attr_integrate (typedie, DW_AT_encoding, |
| + &attr_mem), &encoding) != 0) |
| + return -1; |
| + |
| +#define ABI_LOC(loc, regsize) ((regsize) == 4 ? (loc ## _o32) : (loc)) |
| + |
| + if (encoding == DW_ATE_float) |
| + { |
| + *locp = ABI_LOC(loc_fpreg, regsize); |
| + if (size <= regsize) |
| + return nloc_fpreg; |
| + |
| + if (size <= 2*regsize) |
| + return nloc_fpregpair; |
| + |
| + if (size <= 4*regsize && abi == MIPS_ABI_O32) |
| + return nloc_fpregquad; |
| + |
| + goto aggregate; |
| + } |
| + } |
| + *locp = ABI_LOC(loc_intreg, regsize); |
| + if (size <= regsize) |
| + return nloc_intreg; |
| + if (size <= 2*regsize) |
| + return nloc_intregpair; |
| + |
| + /* Else fall through. Shouldn't happen though (at least with gcc) */ |
| + } |
| + |
| + case DW_TAG_structure_type: |
| + case DW_TAG_class_type: |
| + case DW_TAG_union_type: |
| + case DW_TAG_array_type: |
| + aggregate: |
| + /* XXX TODO: Can't handle structure return with other ABI's yet :-/ */ |
| + if ((abi != MIPS_ABI_O32) && (abi != MIPS_ABI_O64)) |
| + return -2; |
| + |
| + *locp = loc_aggregate; |
| + return nloc_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; |
| +} |
| diff --git a/backends/mips_symbol.c b/backends/mips_symbol.c |
| new file mode 100644 |
| index 0000000..261b05d |
| --- /dev/null |
| +++ b/backends/mips_symbol.c |
| @@ -0,0 +1,53 @@ |
| +/* MIPS specific symbolic name handling. |
| + Copyright (C) 2002, 2003, 2005 Red Hat, Inc. |
| + This file is part of Red Hat elfutils. |
| + Written by Jakub Jelinek <jakub@redhat.com>, 2002. |
| + |
| + Red Hat elfutils is free software; you can redistribute it and/or modify |
| + it under the terms of the GNU General Public License as published by the |
| + Free Software Foundation; version 2 of the License. |
| + |
| + Red Hat 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 a copy of the GNU General Public License along |
| + with Red Hat elfutils; if not, write to the Free Software Foundation, |
| + Inc., 51 Franklin Street, Fifth Floor, Boston MA 02110-1301 USA. |
| + |
| + Red Hat elfutils is an included package of the Open Invention Network. |
| + An included package of the Open Invention Network is a package for which |
| + Open Invention Network licensees cross-license their patents. No patent |
| + license is granted, either expressly or impliedly, by designation as an |
| + included package. Should you wish to participate in the Open Invention |
| + Network licensing program, please visit www.openinventionnetwork.com |
| + <http://www.openinventionnetwork.com>. */ |
| + |
| +#ifdef HAVE_CONFIG_H |
| +# include <config.h> |
| +#endif |
| + |
| +#include <elf.h> |
| +#include <stddef.h> |
| + |
| +#define BACKEND mips_ |
| +#include "libebl_CPU.h" |
| + |
| +/* Check for the simple reloc types. */ |
| +Elf_Type |
| +mips_reloc_simple_type (Ebl *ebl __attribute__ ((unused)), int type, |
| + int *addsub __attribute__ ((unused))) |
| +{ |
| + switch (type) |
| + { |
| + case R_MIPS_16: |
| + return ELF_T_HALF; |
| + case R_MIPS_32: |
| + return ELF_T_WORD; |
| + case R_MIPS_64: |
| + return ELF_T_XWORD; |
| + default: |
| + return ELF_T_NUM; |
| + } |
| +} |
| diff --git a/libebl/eblopenbackend.c b/libebl/eblopenbackend.c |
| index 210b47e..1feac13 100644 |
| --- a/libebl/eblopenbackend.c |
| +++ b/libebl/eblopenbackend.c |
| @@ -57,6 +57,7 @@ const char *m68k_init (Elf *, GElf_Half, Ebl *, size_t); |
| const char *bpf_init (Elf *, GElf_Half, Ebl *, size_t); |
| const char *riscv_init (Elf *, GElf_Half, Ebl *, size_t); |
| const char *csky_init (Elf *, GElf_Half, Ebl *, size_t); |
| +const char *mips_init (Elf *, GElf_Half, Ebl *, size_t); |
| |
| /* This table should contain the complete list of architectures as far |
| as the ELF specification is concerned. */ |
| @@ -87,6 +88,8 @@ static const struct |
| { sparc_init, "elf_sparc", "sparc", 5, EM_SPARC, 0, 0 }, |
| { sparc_init, "elf_sparcv8plus", "sparc", 5, EM_SPARC32PLUS, 0, 0 }, |
| { s390_init, "ebl_s390", "s390", 4, EM_S390, 0, 0 }, |
| + { mips_init, "elf_mips", "mips", 4, EM_MIPS, 0, 0 }, |
| + { mips_init, "elf_mipsel", "mipsel", 4, EM_MIPS_RS3_LE, 0, 0 }, |
| |
| { NULL, "elf_m32", "m32", 3, EM_M32, 0, 0 }, |
| { m68k_init, "elf_m68k", "m68k", 4, EM_68K, ELFCLASS32, ELFDATA2MSB }, |
| -- |
| 2.17.1 |
| |