[PATCH 4/7] RISC-V Binutils Port
Palmer Dabbelt
palmer@dabbelt.com
Sat Oct 22 23:40:00 GMT 2016
---
binutils/readelf.c | 20 +++++++++++-
include/elf/riscv.h | 92 +++++++++++++++++++++++++++++++++++++++++++++++++++++
2 files changed, 111 insertions(+), 1 deletion(-)
create mode 100644 include/elf/riscv.h
diff --git a/binutils/readelf.c b/binutils/readelf.c
index 69942cf..114486c 100644
--- a/binutils/readelf.c
+++ b/binutils/readelf.c
@@ -124,6 +124,7 @@
#include "elf/metag.h"
#include "elf/microblaze.h"
#include "elf/mips.h"
+#include "elf/riscv.h"
#include "elf/mmix.h"
#include "elf/mn10200.h"
#include "elf/mn10300.h"
@@ -775,6 +776,7 @@ guess_is_rela (unsigned int e_machine)
case EM_OR1K:
case EM_PPC64:
case EM_PPC:
+ case EM_RISCV:
case EM_RL78:
case EM_RX:
case EM_S390:
@@ -1314,6 +1316,10 @@ dump_relocations (FILE * file,
rtype = elf_mips_reloc_type (type);
break;
+ case EM_RISCV:
+ rtype = elf_riscv_reloc_type (type);
+ break;
+
case EM_ALPHA:
rtype = elf_alpha_reloc_type (type);
break;
@@ -2327,6 +2333,7 @@ get_machine_name (unsigned e_machine)
case EM_CR16:
case EM_MICROBLAZE:
case EM_MICROBLAZE_OLD: return "Xilinx MicroBlaze";
+ case EM_RISCV: return "RISC-V";
case EM_RL78: return "Renesas RL78";
case EM_RX: return "Renesas RX";
case EM_METAG: return "Imagination Technologies Meta processor architecture";
@@ -2363,7 +2370,6 @@ get_machine_name (unsigned e_machine)
case EM_CSR_KALIMBA: return "CSR Kalimba architecture family";
case EM_Z80: return "Zilog Z80";
case EM_AMDGPU: return "AMD GPU architecture";
- case EM_RISCV: return "RISC-V";
default:
snprintf (buff, sizeof (buff), _("<unknown>: 0x%x"), e_machine);
return buff;
@@ -3308,6 +3314,13 @@ get_machine_flags (unsigned e_flags, unsigned e_machine)
decode_NDS32_machine_flags (e_flags, buf, sizeof buf);
break;
+ case EM_RISCV:
+ if (e_flags & EF_RISCV_RVC)
+ strcat (buf, ", RVC");
+ if (e_flags & EF_RISCV_SOFT_FLOAT)
+ strcat (buf, ", soft-float ABI");
+ break;
+
case EM_SH:
switch ((e_flags & EF_SH_MACH_MASK))
{
@@ -11788,6 +11801,8 @@ is_32bit_abs_reloc (unsigned int reloc_type)
return reloc_type == 1; /* R_PPC64_ADDR32. */
case EM_PPC:
return reloc_type == 1; /* R_PPC_ADDR32. */
+ case EM_RISCV:
+ return reloc_type == 1; /* R_RISCV_32. */
case EM_RL78:
return reloc_type == 1; /* R_RL78_DIR32. */
case EM_RX:
@@ -11941,6 +11956,8 @@ is_64bit_abs_reloc (unsigned int reloc_type)
return reloc_type == 80; /* R_PARISC_DIR64. */
case EM_PPC64:
return reloc_type == 38; /* R_PPC64_ADDR64. */
+ case EM_RISCV:
+ return reloc_type == 2; /* R_RISCV_64. */
case EM_SPARC32PLUS:
case EM_SPARCV9:
case EM_SPARC:
@@ -12112,6 +12129,7 @@ is_none_reloc (unsigned int reloc_type)
case EM_PARISC: /* R_PARISC_NONE. */
case EM_PPC64: /* R_PPC64_NONE. */
case EM_PPC: /* R_PPC_NONE. */
+ case EM_RISCV: /* R_RISCV_NONE. */
case EM_S390: /* R_390_NONE. */
case EM_S390_OLD:
case EM_SH: /* R_SH_NONE. */
diff --git a/include/elf/riscv.h b/include/elf/riscv.h
new file mode 100644
index 0000000..d842876
--- /dev/null
+++ b/include/elf/riscv.h
@@ -0,0 +1,92 @@
+/* RISC-V ELF support for BFD.
+ Copyright 2011-2015 Free Software Foundation, Inc.
+
+ Contributed by Andrew Waterman (andrew@sifive.com).
+ Based on MIPS ELF support for BFD, by Ian Lance Taylor.
+
+ This file is part of BFD, the Binary File Descriptor library.
+
+ This program 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; either version 3 of the License, or
+ (at your option) any later version.
+
+ This program 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 this program; see the file COPYING3. If not,
+ see <http://www.gnu.org/licenses/>. */
+
+/* This file holds definitions specific to the RISCV ELF ABI. Note
+ that most of this is not actually implemented by BFD. */
+
+#ifndef _ELF_RISCV_H
+#define _ELF_RISCV_H
+
+#include "elf/reloc-macros.h"
+#include "libiberty.h"
+
+/* Relocation types. */
+START_RELOC_NUMBERS (elf_riscv_reloc_type)
+ /* Relocation types used by the dynamic linker. */
+ RELOC_NUMBER (R_RISCV_NONE, 0)
+ RELOC_NUMBER (R_RISCV_32, 1)
+ RELOC_NUMBER (R_RISCV_64, 2)
+ RELOC_NUMBER (R_RISCV_RELATIVE, 3)
+ RELOC_NUMBER (R_RISCV_COPY, 4)
+ RELOC_NUMBER (R_RISCV_JUMP_SLOT, 5)
+ RELOC_NUMBER (R_RISCV_TLS_DTPMOD32, 6)
+ RELOC_NUMBER (R_RISCV_TLS_DTPMOD64, 7)
+ RELOC_NUMBER (R_RISCV_TLS_DTPREL32, 8)
+ RELOC_NUMBER (R_RISCV_TLS_DTPREL64, 9)
+ RELOC_NUMBER (R_RISCV_TLS_TPREL32, 10)
+ RELOC_NUMBER (R_RISCV_TLS_TPREL64, 11)
+
+ /* Relocation types not used by the dynamic linker. */
+ RELOC_NUMBER (R_RISCV_BRANCH, 16)
+ RELOC_NUMBER (R_RISCV_JAL, 17)
+ RELOC_NUMBER (R_RISCV_CALL, 18)
+ RELOC_NUMBER (R_RISCV_CALL_PLT, 19)
+ RELOC_NUMBER (R_RISCV_GOT_HI20, 20)
+ RELOC_NUMBER (R_RISCV_TLS_GOT_HI20, 21)
+ RELOC_NUMBER (R_RISCV_TLS_GD_HI20, 22)
+ RELOC_NUMBER (R_RISCV_PCREL_HI20, 23)
+ RELOC_NUMBER (R_RISCV_PCREL_LO12_I, 24)
+ RELOC_NUMBER (R_RISCV_PCREL_LO12_S, 25)
+ RELOC_NUMBER (R_RISCV_HI20, 26)
+ RELOC_NUMBER (R_RISCV_LO12_I, 27)
+ RELOC_NUMBER (R_RISCV_LO12_S, 28)
+ RELOC_NUMBER (R_RISCV_TPREL_HI20, 29)
+ RELOC_NUMBER (R_RISCV_TPREL_LO12_I, 30)
+ RELOC_NUMBER (R_RISCV_TPREL_LO12_S, 31)
+ RELOC_NUMBER (R_RISCV_TPREL_ADD, 32)
+ RELOC_NUMBER (R_RISCV_ADD8, 33)
+ RELOC_NUMBER (R_RISCV_ADD16, 34)
+ RELOC_NUMBER (R_RISCV_ADD32, 35)
+ RELOC_NUMBER (R_RISCV_ADD64, 36)
+ RELOC_NUMBER (R_RISCV_SUB8, 37)
+ RELOC_NUMBER (R_RISCV_SUB16, 38)
+ RELOC_NUMBER (R_RISCV_SUB32, 39)
+ RELOC_NUMBER (R_RISCV_SUB64, 40)
+ RELOC_NUMBER (R_RISCV_GNU_VTINHERIT, 41)
+ RELOC_NUMBER (R_RISCV_GNU_VTENTRY, 42)
+ RELOC_NUMBER (R_RISCV_ALIGN, 43)
+ RELOC_NUMBER (R_RISCV_RVC_BRANCH, 44)
+ RELOC_NUMBER (R_RISCV_RVC_JUMP, 45)
+ RELOC_NUMBER (R_RISCV_RVC_LUI, 46)
+ RELOC_NUMBER (R_RISCV_GPREL_I, 47)
+ RELOC_NUMBER (R_RISCV_GPREL_S, 48)
+END_RELOC_NUMBERS (R_RISCV_max)
+
+/* Processor specific flags for the ELF header e_flags field. */
+
+/* File may contain compressed instructions. */
+#define EF_RISCV_RVC 0x0001
+
+/* File uses the soft-float calling convention. */
+#define EF_RISCV_SOFT_FLOAT 0x0002
+
+#endif /* _ELF_RISCV_H */
--
2.7.3
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