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-rw-r--r--bfd/ChangeLog17
-rw-r--r--bfd/Makefile.am4
-rw-r--r--bfd/Makefile.in6
-rw-r--r--bfd/archures.c4
-rw-r--r--bfd/bfd-in2.h37
-rw-r--r--bfd/config.bfd6
-rwxr-xr-xbfd/configure1
-rw-r--r--bfd/configure.ac1
-rw-r--r--bfd/cpu-pru.c43
-rw-r--r--bfd/elf-bfd.h1
-rw-r--r--bfd/elf32-pru.c1469
-rw-r--r--bfd/libbfd.h12
-rw-r--r--bfd/po/SRC-POTFILES.in2
-rw-r--r--bfd/reloc.c48
-rw-r--r--bfd/targets.c3
15 files changed, 1654 insertions, 0 deletions
diff --git a/bfd/ChangeLog b/bfd/ChangeLog
index bee5e40..a9b2e09 100644
--- a/bfd/ChangeLog
+++ b/bfd/ChangeLog
@@ -1,3 +1,20 @@
+2016-12-31 Dimitar Dimitrov <dimitar@dinux.eu>
+
+ * archures.c: Add bfd_arch_pru.
+ * Makefile.am: Add PRU target.
+ * config.bfd: Ditto.
+ * configure.ac: Ditto.
+ * elf-bfd.h (enum elf_target_id): Add PRU_ELF_DATA.
+ * targets.c: Add pru_elf32_vec.
+ * reloc.c: Add PRU relocations.
+ * cpu-pru.c: New file.
+ * elf32-pru.c: New file.
+ * Makefile.in: Regenerate.
+ * configure: Regenerate.
+ * po/SRC-POTFILES.in: Regenerate.
+ * bfd-in2.h: Regenerate
+ * libbfd.h: Regenerate.
+
2016-12-29 Alan Modra <amodra@gmail.com>
* elflink.c (_bfd_elf_link_hash_copy_indirect): Only omit
diff --git a/bfd/Makefile.am b/bfd/Makefile.am
index 0d5dd4a..ff02ebb 100644
--- a/bfd/Makefile.am
+++ b/bfd/Makefile.am
@@ -147,6 +147,7 @@ ALL_MACHINES = \
cpu-pj.lo \
cpu-plugin.lo \
cpu-powerpc.lo \
+ cpu-pru.lo \
cpu-rs6000.lo \
cpu-riscv.lo \
cpu-rl78.lo \
@@ -235,6 +236,7 @@ ALL_MACHINES_CFILES = \
cpu-pj.c \
cpu-plugin.c \
cpu-powerpc.c \
+ cpu-pru.c \
cpu-rs6000.c \
cpu-riscv.c \
cpu-rl78.c \
@@ -365,6 +367,7 @@ BFD32_BACKENDS = \
elf32-or1k.lo \
elf32-pj.lo \
elf32-ppc.lo \
+ elf32-pru.lo \
elf32-rl78.lo \
elf32-rx.lo \
elf32-s390.lo \
@@ -557,6 +560,7 @@ BFD32_BACKENDS_CFILES = \
elf32-or1k.c \
elf32-pj.c \
elf32-ppc.c \
+ elf32-pru.c \
elf32-rl78.c \
elf32-rx.c \
elf32-s390.c \
diff --git a/bfd/Makefile.in b/bfd/Makefile.in
index 661155c..7792dad 100644
--- a/bfd/Makefile.in
+++ b/bfd/Makefile.in
@@ -480,6 +480,7 @@ ALL_MACHINES = \
cpu-pj.lo \
cpu-plugin.lo \
cpu-powerpc.lo \
+ cpu-pru.lo \
cpu-rs6000.lo \
cpu-riscv.lo \
cpu-rl78.lo \
@@ -568,6 +569,7 @@ ALL_MACHINES_CFILES = \
cpu-pj.c \
cpu-plugin.c \
cpu-powerpc.c \
+ cpu-pru.c \
cpu-rs6000.c \
cpu-riscv.c \
cpu-rl78.c \
@@ -699,6 +701,7 @@ BFD32_BACKENDS = \
elf32-or1k.lo \
elf32-pj.lo \
elf32-ppc.lo \
+ elf32-pru.lo \
elf32-rl78.lo \
elf32-rx.lo \
elf32-s390.lo \
@@ -891,6 +894,7 @@ BFD32_BACKENDS_CFILES = \
elf32-or1k.c \
elf32-pj.c \
elf32-ppc.c \
+ elf32-pru.c \
elf32-rl78.c \
elf32-rx.c \
elf32-s390.c \
@@ -1420,6 +1424,7 @@ distclean-compile:
@AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/cpu-pj.Plo@am__quote@
@AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/cpu-plugin.Plo@am__quote@
@AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/cpu-powerpc.Plo@am__quote@
+@AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/cpu-pru.Plo@am__quote@
@AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/cpu-riscv.Plo@am__quote@
@AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/cpu-rl78.Plo@am__quote@
@AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/cpu-rs6000.Plo@am__quote@
@@ -1510,6 +1515,7 @@ distclean-compile:
@AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/elf32-or1k.Plo@am__quote@
@AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/elf32-pj.Plo@am__quote@
@AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/elf32-ppc.Plo@am__quote@
+@AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/elf32-pru.Plo@am__quote@
@AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/elf32-riscv.Plo@am__quote@
@AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/elf32-rl78.Plo@am__quote@
@AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/elf32-rx.Plo@am__quote@
diff --git a/bfd/archures.c b/bfd/archures.c
index e503492..1b1e9ce 100644
--- a/bfd/archures.c
+++ b/bfd/archures.c
@@ -528,6 +528,8 @@ DESCRIPTION
.#define bfd_mach_nios2r2 2
. bfd_arch_visium, {* Visium *}
.#define bfd_mach_visium 1
+. bfd_arch_pru, {* PRU *}
+.#define bfd_mach_pru 0
. bfd_arch_last
. };
*/
@@ -631,6 +633,7 @@ extern const bfd_arch_info_type bfd_pj_arch;
extern const bfd_arch_info_type bfd_plugin_arch;
extern const bfd_arch_info_type bfd_powerpc_archs[];
#define bfd_powerpc_arch bfd_powerpc_archs[0]
+extern const bfd_arch_info_type bfd_pru_arch;
extern const bfd_arch_info_type bfd_riscv_arch;
extern const bfd_arch_info_type bfd_rs6000_arch;
extern const bfd_arch_info_type bfd_rl78_arch;
@@ -721,6 +724,7 @@ static const bfd_arch_info_type * const bfd_archures_list[] =
&bfd_or1k_arch,
&bfd_pdp11_arch,
&bfd_powerpc_arch,
+ &bfd_pru_arch,
&bfd_riscv_arch,
&bfd_rl78_arch,
&bfd_rs6000_arch,
diff --git a/bfd/bfd-in2.h b/bfd/bfd-in2.h
index b5ac178..9b8ed86 100644
--- a/bfd/bfd-in2.h
+++ b/bfd/bfd-in2.h
@@ -2370,6 +2370,8 @@ enum bfd_architecture
#define bfd_mach_nios2r2 2
bfd_arch_visium, /* Visium */
#define bfd_mach_visium 1
+ bfd_arch_pru, /* PRU */
+#define bfd_mach_pru 0
bfd_arch_last
};
@@ -5562,6 +5564,41 @@ a matching LO8XG part. */
BFD_RELOC_NIOS2_R2_T1X1I6,
BFD_RELOC_NIOS2_R2_T1X1I6_2,
+/* PRU LDI 16-bit unsigned data-memory relocation. */
+ BFD_RELOC_PRU_U16,
+
+/* PRU LDI 16-bit unsigned instruction-memory relocation. */
+ BFD_RELOC_PRU_U16_PMEMIMM,
+
+/* PRU relocation for two consecutive LDI load instructions that load a
+32 bit value into a register. If the higher bits are all zero, then
+the second instruction may be relaxed. */
+ BFD_RELOC_PRU_LDI32,
+
+/* PRU QBBx 10-bit signed PC-relative relocation. */
+ BFD_RELOC_PRU_S10_PCREL,
+
+/* PRU 8-bit unsigned relocation used for the LOOP instruction. */
+ BFD_RELOC_PRU_U8_PCREL,
+
+/* PRU Program Memory relocations. Used to convert from byte addressing to
+32-bit word addressing. */
+ BFD_RELOC_PRU_32_PMEM,
+ BFD_RELOC_PRU_16_PMEM,
+
+/* PRU relocations to mark the difference of two local symbols.
+These are only needed to support linker relaxation and can be ignored
+when not relaxing. The field is set to the value of the difference
+assuming no relaxation. The relocation encodes the position of the
+second symbol so the linker can determine whether to adjust the field
+value. The PMEM variants encode the word difference, instead of byte
+difference between symbols. */
+ BFD_RELOC_PRU_GNU_DIFF8,
+ BFD_RELOC_PRU_GNU_DIFF16,
+ BFD_RELOC_PRU_GNU_DIFF32,
+ BFD_RELOC_PRU_GNU_DIFF16_PMEM,
+ BFD_RELOC_PRU_GNU_DIFF32_PMEM,
+
/* IQ2000 Relocations. */
BFD_RELOC_IQ2000_OFFSET_16,
BFD_RELOC_IQ2000_OFFSET_21,
diff --git a/bfd/config.bfd b/bfd/config.bfd
index 5bca5d9..07f3846 100644
--- a/bfd/config.bfd
+++ b/bfd/config.bfd
@@ -189,6 +189,7 @@ or1k*|or1knd*) targ_archs=bfd_or1k_arch ;;
pdp11*) targ_archs=bfd_pdp11_arch ;;
pj*) targ_archs="bfd_pj_arch bfd_i386_arch";;
powerpc*) targ_archs="bfd_rs6000_arch bfd_powerpc_arch" ;;
+pru*) targ_archs=bfd_pru_arch ;;
riscv*) targ_archs=bfd_riscv_arch ;;
rs6000) targ_archs="bfd_rs6000_arch bfd_powerpc_arch" ;;
s390*) targ_archs=bfd_s390_arch ;;
@@ -1436,6 +1437,11 @@ case "${targ}" in
targ_selvecs="powerpc_pei_le_vec powerpc_pei_vec powerpc_pe_le_vec powerpc_pe_vec"
;;
+ pru-*-*)
+ targ_defvec=pru_elf32_vec
+ targ_underscore=yes
+ ;;
+
#ifdef BFD64
riscv32-*-*)
targ_defvec=riscv_elf32_vec
diff --git a/bfd/configure b/bfd/configure
index 2f05cad..83256d2 100755
--- a/bfd/configure
+++ b/bfd/configure
@@ -14475,6 +14475,7 @@ do
powerpc_pei_vec) tb="$tb pei-ppc.lo peigen.lo $coff" ;;
powerpc_pei_le_vec) tb="$tb pei-ppc.lo peigen.lo $coff" ;;
powerpc_xcoff_vec) tb="$tb coff-rs6000.lo $xcoff" ;;
+ pru_elf32_vec) tb="$tb elf32-pru.lo elf32.lo $elf" ;;
riscv_elf32_vec) tb="$tb elf32-riscv.lo elfxx-riscv.lo elf32.lo $elf" ;;
riscv_elf64_vec) tb="$tb elf64-riscv.lo elf64.lo elfxx-riscv.lo elf32.lo $elf"; target_size=64 ;;
rl78_elf32_vec) tb="$tb elf32-rl78.lo elf32.lo $elf" ;;
diff --git a/bfd/configure.ac b/bfd/configure.ac
index 944fc56..802aca7 100644
--- a/bfd/configure.ac
+++ b/bfd/configure.ac
@@ -606,6 +606,7 @@ do
powerpc_pei_vec) tb="$tb pei-ppc.lo peigen.lo $coff" ;;
powerpc_pei_le_vec) tb="$tb pei-ppc.lo peigen.lo $coff" ;;
powerpc_xcoff_vec) tb="$tb coff-rs6000.lo $xcoff" ;;
+ pru_elf32_vec) tb="$tb elf32-pru.lo elf32.lo $elf" ;;
riscv_elf32_vec) tb="$tb elf32-riscv.lo elfxx-riscv.lo elf32.lo $elf" ;;
riscv_elf64_vec) tb="$tb elf64-riscv.lo elf64.lo elfxx-riscv.lo elf32.lo $elf"; target_size=64 ;;
rl78_elf32_vec) tb="$tb elf32-rl78.lo elf32.lo $elf" ;;
diff --git a/bfd/cpu-pru.c b/bfd/cpu-pru.c
new file mode 100644
index 0000000..824e805
--- /dev/null
+++ b/bfd/cpu-pru.c
@@ -0,0 +1,43 @@
+/* BFD support for the TI PRU microprocessor.
+ Copyright (C) 2014-2016 Free Software Foundation, Inc.
+ Contributed by Dimitar Dimitrov <dimitar@dinux.eu>
+
+ 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; if not, write to the Free Software
+ Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston,
+ MA 02110-1301, USA. */
+
+#include "sysdep.h"
+#include "bfd.h"
+#include "libbfd.h"
+
+#define N(BITS_WORD, BITS_ADDR, NUMBER, PRINT, DEFAULT, NEXT) \
+ { \
+ BITS_WORD, /* bits in a word */ \
+ BITS_ADDR, /* bits in an address */ \
+ 8, /* 8 bits in a byte */ \
+ bfd_arch_pru, \
+ NUMBER, \
+ "pru", \
+ PRINT, \
+ 3, \
+ DEFAULT, \
+ bfd_default_compatible, \
+ bfd_default_scan, \
+ bfd_arch_default_fill, \
+ NEXT \
+ }
+
+const bfd_arch_info_type bfd_pru_arch = N (32, 32, 0, "pru", TRUE, NULL);
diff --git a/bfd/elf-bfd.h b/bfd/elf-bfd.h
index 1c634d8..3dcc245 100644
--- a/bfd/elf-bfd.h
+++ b/bfd/elf-bfd.h
@@ -467,6 +467,7 @@ enum elf_target_id
OR1K_ELF_DATA,
PPC32_ELF_DATA,
PPC64_ELF_DATA,
+ PRU_ELF_DATA,
S390_ELF_DATA,
SH_ELF_DATA,
SPARC_ELF_DATA,
diff --git a/bfd/elf32-pru.c b/bfd/elf32-pru.c
new file mode 100644
index 0000000..b38951a
--- /dev/null
+++ b/bfd/elf32-pru.c
@@ -0,0 +1,1469 @@
+/* 32-bit ELF support for TI PRU.
+ Copyright (C) 2014-2016 Free Software Foundation, Inc.
+ Contributed by Dimitar Dimitrov <dimitar@dinux.eu>
+ Based on elf32-nios2.c
+
+ 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; if not, write to the Free Software
+ Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston,
+ MA 02110-1301, USA. */
+
+/* This file handles TI PRU ELF targets. */
+
+#include "sysdep.h"
+#include "bfd.h"
+#include "libbfd.h"
+#include "bfdlink.h"
+#include "genlink.h"
+#include "elf-bfd.h"
+#include "elf/pru.h"
+#include "opcode/pru.h"
+
+#define SWAP_VALS(A,B) \
+ do { \
+ (A) ^= (B); \
+ (B) ^= (A); \
+ (A) ^= (B); \
+ } while (0)
+
+/* Enable debugging printout at stdout with this variable. */
+static bfd_boolean debug_relax = FALSE;
+
+/* Forward declarations. */
+static bfd_reloc_status_type pru_elf32_pmem_relocate
+ (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **);
+static bfd_reloc_status_type pru_elf32_s10_pcrel_relocate
+ (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **);
+static bfd_reloc_status_type pru_elf32_u8_pcrel_relocate
+ (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **);
+static bfd_reloc_status_type pru_elf32_ldi32_relocate
+ (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **);
+static bfd_reloc_status_type bfd_elf_pru_diff_relocate
+ (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **);
+
+/* Target vector. */
+extern const bfd_target pru_elf32_vec;
+
+/* The relocation table used for SHT_REL sections. */
+static reloc_howto_type elf_pru_howto_table_rel[] = {
+ /* No relocation. */
+ HOWTO (R_PRU_NONE, /* type */
+ 0, /* rightshift */
+ 0, /* size (0 = byte, 1 = short, 2 = long) */
+ 3, /* bitsize */
+ FALSE, /* pc_relative */
+ 0, /* bitpos */
+ complain_overflow_dont,/* complain_on_overflow */
+ bfd_elf_generic_reloc, /* special_function */
+ "R_PRU_NONE", /* name */
+ FALSE, /* partial_inplace */
+ 0, /* src_mask */
+ 0, /* dst_mask */
+ FALSE), /* pcrel_offset */
+
+ HOWTO (R_PRU_16_PMEM,
+ 2,
+ 1, /* short */
+ 32,
+ FALSE,
+ 0,
+ complain_overflow_dont,
+ bfd_elf_generic_reloc,
+ "R_PRU_16_PMEM",
+ FALSE,
+ 0, /* src_mask */
+ 0xffff,
+ FALSE),
+
+ HOWTO (R_PRU_U16_PMEMIMM,
+ 2,
+ 2,
+ 32,
+ FALSE,
+ 8,
+ complain_overflow_unsigned,
+ pru_elf32_pmem_relocate,
+ "R_PRU_U16_PMEMIMM",
+ FALSE,
+ 0, /* src_mask */
+ 0x00ffff00,
+ FALSE),
+
+ HOWTO (R_PRU_BFD_RELOC_16,
+ 0,
+ 1, /* short */
+ 16,
+ FALSE,
+ 0,
+ complain_overflow_bitfield,
+ bfd_elf_generic_reloc,
+ "R_PRU_BFD_RELOC16",
+ FALSE,
+ 0, /* src_mask */
+ 0x0000ffff,
+ FALSE),
+
+ /* 16-bit unsigned immediate relocation. */
+ HOWTO (R_PRU_U16, /* type */
+ 0, /* rightshift */
+ 2, /* size (0 = byte, 1 = short, 2 = long) */
+ 16, /* bitsize */
+ FALSE, /* pc_relative */
+ 8, /* bitpos */
+ complain_overflow_unsigned, /* complain on overflow */
+ bfd_elf_generic_reloc, /* special function */
+ "R_PRU_U16", /* name */
+ FALSE, /* partial_inplace */
+ 0, /* src_mask */
+ 0x00ffff00, /* dest_mask */
+ FALSE), /* pcrel_offset */
+
+ HOWTO (R_PRU_32_PMEM,
+ 2,
+ 2, /* long */
+ 32,
+ FALSE,
+ 0,
+ complain_overflow_dont,
+ pru_elf32_pmem_relocate,
+ "R_PRU_32_PMEM",
+ FALSE,
+ 0, /* src_mask */
+ 0xffffffff,
+ FALSE),
+
+ HOWTO (R_PRU_BFD_RELOC_32,
+ 0,
+ 2, /* long */
+ 32,
+ FALSE,
+ 0,
+ complain_overflow_dont,
+ bfd_elf_generic_reloc,
+ "R_PRU_BFD_RELOC32",
+ FALSE,
+ 0, /* src_mask */
+ 0xffffffff,
+ FALSE),
+
+ HOWTO (R_PRU_S10_PCREL,
+ 2,
+ 2,
+ 10,
+ TRUE,
+ 0,
+ complain_overflow_bitfield,
+ pru_elf32_s10_pcrel_relocate,
+ "R_PRU_S10_PCREL",
+ FALSE,
+ 0, /* src_mask */
+ 0x060000ff,
+ TRUE),
+
+ HOWTO (R_PRU_U8_PCREL,
+ 2,
+ 2,
+ 8,
+ TRUE,
+ 0,
+ complain_overflow_unsigned,
+ pru_elf32_u8_pcrel_relocate,
+ "R_PRU_U8_PCREL",
+ FALSE,
+ 0, /* src_mask */
+ 0x000000ff,
+ TRUE),
+
+ HOWTO (R_PRU_LDI32,
+ 0, /* rightshift */
+ 4, /* size (4 = 8bytes) */
+ 32, /* bitsize */
+ FALSE, /* pc_relative */
+ 0, /* bitpos */
+ complain_overflow_unsigned, /* complain on overflow */
+ pru_elf32_ldi32_relocate, /* special function */
+ "R_PRU_LDI32", /* name */
+ FALSE, /* partial_inplace */
+ 0, /* src_mask */
+ 0xffffffff, /* dest_mask */
+ FALSE), /* pcrel_offset */
+
+ /* GNU-specific relocations. */
+ HOWTO (R_PRU_GNU_BFD_RELOC_8,
+ 0,
+ 0, /* byte */
+ 8,
+ FALSE,
+ 0,
+ complain_overflow_bitfield,
+ bfd_elf_generic_reloc,
+ "R_PRU_BFD_RELOC8",
+ FALSE,
+ 0, /* src_mask */
+ 0x000000ff,
+ FALSE),
+
+ HOWTO (R_PRU_GNU_DIFF8, /* type */
+ 0, /* rightshift */
+ 0, /* size (0 = byte, 1 = short, 2 = long) */
+ 8, /* bitsize */
+ FALSE, /* pc_relative */
+ 0, /* bitpos */
+ complain_overflow_bitfield, /* complain_on_overflow */
+ bfd_elf_pru_diff_relocate, /* special_function */
+ "R_PRU_DIFF8", /* name */
+ FALSE, /* partial_inplace */
+ 0, /* src_mask */
+ 0xff, /* dst_mask */
+ FALSE), /* pcrel_offset */
+
+ HOWTO (R_PRU_GNU_DIFF16, /* type */
+ 0, /* rightshift */
+ 1, /* size (0 = byte, 1 = short, 2 = long) */
+ 16, /* bitsize */
+ FALSE, /* pc_relative */
+ 0, /* bitpos */
+ complain_overflow_bitfield, /* complain_on_overflow */
+ bfd_elf_pru_diff_relocate,/* special_function */
+ "R_PRU_DIFF16", /* name */
+ FALSE, /* partial_inplace */
+ 0, /* src_mask */
+ 0xffff, /* dst_mask */
+ FALSE), /* pcrel_offset */
+
+ HOWTO (R_PRU_GNU_DIFF32, /* type */
+ 0, /* rightshift */
+ 2, /* size (0 = byte, 1 = short, 2 = long) */
+ 32, /* bitsize */
+ FALSE, /* pc_relative */
+ 0, /* bitpos */
+ complain_overflow_bitfield, /* complain_on_overflow */
+ bfd_elf_pru_diff_relocate,/* special_function */
+ "R_PRU_DIFF32", /* name */
+ FALSE, /* partial_inplace */
+ 0, /* src_mask */
+ 0xffffffff, /* dst_mask */
+ FALSE), /* pcrel_offset */
+
+ HOWTO (R_PRU_GNU_DIFF16_PMEM, /* type */
+ 0, /* rightshift */
+ 1, /* size (0 = byte, 1 = short, 2 = long) */
+ 16, /* bitsize */
+ FALSE, /* pc_relative */
+ 0, /* bitpos */
+ complain_overflow_bitfield, /* complain_on_overflow */
+ bfd_elf_pru_diff_relocate,/* special_function */
+ "R_PRU_DIFF16_PMEM", /* name */
+ FALSE, /* partial_inplace */
+ 0, /* src_mask */
+ 0xffff, /* dst_mask */
+ FALSE), /* pcrel_offset */
+
+ HOWTO (R_PRU_GNU_DIFF32_PMEM, /* type */
+ 0, /* rightshift */
+ 2, /* size (0 = byte, 1 = short, 2 = long) */
+ 32, /* bitsize */
+ FALSE, /* pc_relative */
+ 0, /* bitpos */
+ complain_overflow_bitfield, /* complain_on_overflow */
+ bfd_elf_pru_diff_relocate,/* special_function */
+ "R_PRU_DIFF32_PMEM", /* name */
+ FALSE, /* partial_inplace */
+ 0, /* src_mask */
+ 0xffffffff, /* dst_mask */
+ FALSE), /* pcrel_offset */
+
+/* Add other relocations here. */
+};
+
+static unsigned char elf_code_to_howto_index[R_PRU_ILLEGAL + 1];
+
+/* Return the howto for relocation RTYPE. */
+static reloc_howto_type *
+lookup_howto (unsigned int rtype)
+{
+ static int initialized = 0;
+ int i;
+ int howto_tbl_size = (int) (sizeof (elf_pru_howto_table_rel)
+ / sizeof (elf_pru_howto_table_rel[0]));
+
+ if (!initialized)
+ {
+ initialized = 1;
+ memset (elf_code_to_howto_index, 0xff,
+ sizeof (elf_code_to_howto_index));
+ for (i = 0; i < howto_tbl_size; i++)
+ elf_code_to_howto_index[elf_pru_howto_table_rel[i].type] = i;
+ }
+
+ BFD_ASSERT (rtype <= R_PRU_ILLEGAL);
+ i = elf_code_to_howto_index[rtype];
+ if (i >= howto_tbl_size)
+ return 0;
+ return elf_pru_howto_table_rel + i;
+}
+
+/* Map for converting BFD reloc types to PRU reloc types. */
+struct elf_reloc_map
+{
+ bfd_reloc_code_real_type bfd_val;
+ enum elf_pru_reloc_type elf_val;
+};
+
+static const struct elf_reloc_map pru_reloc_map[] = {
+ {BFD_RELOC_NONE, R_PRU_NONE},
+ {BFD_RELOC_PRU_16_PMEM, R_PRU_16_PMEM},
+ {BFD_RELOC_PRU_U16_PMEMIMM, R_PRU_U16_PMEMIMM},
+ {BFD_RELOC_16, R_PRU_BFD_RELOC_16},
+ {BFD_RELOC_PRU_U16, R_PRU_U16},
+ {BFD_RELOC_PRU_32_PMEM, R_PRU_32_PMEM},
+ {BFD_RELOC_32, R_PRU_BFD_RELOC_32},
+ {BFD_RELOC_PRU_S10_PCREL, R_PRU_S10_PCREL},
+ {BFD_RELOC_PRU_U8_PCREL, R_PRU_U8_PCREL},
+ {BFD_RELOC_PRU_LDI32, R_PRU_LDI32},
+
+ {BFD_RELOC_8, R_PRU_GNU_BFD_RELOC_8},
+ {BFD_RELOC_PRU_GNU_DIFF8, R_PRU_GNU_DIFF8},
+ {BFD_RELOC_PRU_GNU_DIFF16, R_PRU_GNU_DIFF16},
+ {BFD_RELOC_PRU_GNU_DIFF32, R_PRU_GNU_DIFF32},
+ {BFD_RELOC_PRU_GNU_DIFF16_PMEM, R_PRU_GNU_DIFF16_PMEM},
+ {BFD_RELOC_PRU_GNU_DIFF32_PMEM, R_PRU_GNU_DIFF32_PMEM},
+};
+
+
+/* Assorted hash table functions. */
+
+/* Create an entry in a PRU ELF linker hash table. */
+static struct bfd_hash_entry *
+link_hash_newfunc (struct bfd_hash_entry *entry,
+ struct bfd_hash_table *table, const char *string)
+{
+ /* Allocate the structure if it has not already been allocated by a
+ subclass. */
+ if (entry == NULL)
+ {
+ entry = bfd_hash_allocate (table,
+ sizeof (struct elf_link_hash_entry));
+ if (entry == NULL)
+ return entry;
+ }
+
+ /* Call the allocation method of the superclass. */
+ entry = _bfd_elf_link_hash_newfunc (entry, table, string);
+
+ return entry;
+}
+
+/* Implement bfd_elf32_bfd_reloc_type_lookup:
+ Given a BFD reloc type, return a howto structure. */
+static reloc_howto_type *
+pru_elf32_bfd_reloc_type_lookup (bfd *abfd ATTRIBUTE_UNUSED,
+ bfd_reloc_code_real_type code)
+{
+ int i;
+ for (i = 0;
+ i < (int) (sizeof (pru_reloc_map) / sizeof (struct elf_reloc_map));
+ ++i)
+ if (pru_reloc_map[i].bfd_val == code)
+ return lookup_howto ((unsigned int) pru_reloc_map[i].elf_val);
+ return NULL;
+}
+
+/* Implement bfd_elf32_bfd_reloc_name_lookup:
+ Given a reloc name, return a howto structure. */
+static reloc_howto_type *
+pru_elf32_bfd_reloc_name_lookup (bfd *abfd ATTRIBUTE_UNUSED,
+ const char *r_name)
+{
+ unsigned int i;
+ for (i = 0;
+ i < (sizeof (elf_pru_howto_table_rel)
+ / sizeof (elf_pru_howto_table_rel[0]));
+ i++)
+ if (elf_pru_howto_table_rel[i].name
+ && strcasecmp (elf_pru_howto_table_rel[i].name, r_name) == 0)
+ return &elf_pru_howto_table_rel[i];
+
+ return NULL;
+}
+
+/* Implement elf_info_to_howto:
+ Given a ELF32 relocation, fill in a arelent structure. */
+static void
+pru_elf32_info_to_howto (bfd *abfd ATTRIBUTE_UNUSED, arelent *cache_ptr,
+ Elf_Internal_Rela *dst)
+{
+ unsigned int r_type;
+
+ r_type = ELF32_R_TYPE (dst->r_info);
+ BFD_ASSERT (r_type < R_PRU_ILLEGAL);
+ cache_ptr->howto = lookup_howto (r_type);
+}
+
+/* Do the relocations that require special handling. */
+/* Produce a word address for program memory. Linker scripts will put .text
+ at a high offset in order to differentiate it from .data. So here we also
+ mask the high bits of PMEM address.
+
+ But why 1MB when internal Program Memory much smaller? We want to catch
+ unintended overflows.
+
+ Why not use (1<<31) as an offset and a mask? Sitara DDRAM usually resides
+ there, and users might want to put some shared carveout memory region in
+ their linker scripts. So 0x80000000 might be a valid .data address.
+
+ Note that we still keep and pass down the original howto. This way we
+ can reuse this function for several different relocations. */
+static bfd_reloc_status_type
+pru_elf32_do_pmem_relocate (bfd *abfd, reloc_howto_type *howto,
+ asection *input_section,
+ bfd_byte *data, bfd_vma offset,
+ bfd_vma symbol_value, bfd_vma addend)
+{
+ symbol_value = symbol_value + addend;
+ addend = 0;
+ symbol_value &= 0x3fffff;
+ return _bfd_final_link_relocate (howto, abfd, input_section,
+ data, offset, symbol_value, addend);
+}
+
+/* Direct copy of _bfd_final_link_relocate, but with special
+ "fill-in". This copy-paste mumbo jumbo is only needed because BFD
+ cannot deal correctly with non-contiguous bit fields. */
+static bfd_reloc_status_type
+pru_elf32_do_s10_pcrel_relocate (bfd *input_bfd, reloc_howto_type *howto,
+ asection *input_section,
+ bfd_byte *contents, bfd_vma address,
+ bfd_vma relocation, bfd_vma addend)
+{
+ bfd_byte *location;
+ bfd_vma x = 0;
+ bfd_vma qboff;
+ bfd_reloc_status_type flag = bfd_reloc_ok;
+
+ /* Sanity check the address. */
+ if (address > bfd_get_section_limit (input_bfd, input_section))
+ return bfd_reloc_outofrange;
+
+ BFD_ASSERT (howto->pc_relative);
+ BFD_ASSERT (howto->pcrel_offset);
+
+ relocation = relocation + addend - (input_section->output_section->vma
+ + input_section->output_offset) - address;
+
+ location = contents + address;
+
+ /* Get the value we are going to relocate. */
+ BFD_ASSERT (bfd_get_reloc_size (howto) == 4);
+ x = bfd_get_32 (input_bfd, location);
+
+ qboff = GET_BROFF_SIGNED (x) << howto->rightshift;
+ relocation += qboff;
+
+ BFD_ASSERT (howto->complain_on_overflow == complain_overflow_bitfield);
+
+ if (relocation > 2047 && relocation < (bfd_vma)-2048l)
+ flag = bfd_reloc_overflow;
+
+ /* Check that target address is word-aligned. */
+ if (relocation & ((1 << howto->rightshift) - 1))
+ flag = bfd_reloc_outofrange;
+
+ relocation >>= (bfd_vma) howto->rightshift;
+
+ /* Fill-in the RELOCATION to the right bits of X. */
+ SET_BROFF_URAW (x, relocation);
+
+ bfd_put_32 (input_bfd, x, location);
+
+ return flag;
+}
+
+static bfd_reloc_status_type
+pru_elf32_do_u8_pcrel_relocate (bfd *abfd, reloc_howto_type *howto,
+ asection *input_section,
+ bfd_byte *data, bfd_vma offset,
+ bfd_vma symbol_value, bfd_vma addend)
+{
+ bfd_vma relocation;
+
+ BFD_ASSERT (howto->pc_relative);
+ BFD_ASSERT (howto->pcrel_offset);
+
+ relocation = symbol_value + addend - (input_section->output_section->vma
+ + input_section->output_offset) - offset;
+ relocation >>= howto->rightshift;
+
+ /* 0 and 1 are invalid target labels for LOOP. We cannot
+ encode this info in HOWTO, so catch such cases here. */
+ if (relocation < 2)
+ return bfd_reloc_outofrange;
+
+ return _bfd_final_link_relocate (howto, abfd, input_section,
+ data, offset, symbol_value, addend);
+}
+
+/* Idea and code taken from elf32-d30v. */
+static bfd_reloc_status_type
+pru_elf32_do_ldi32_relocate (bfd *abfd, reloc_howto_type *howto,
+ asection *input_section,
+ bfd_byte *data, bfd_vma offset,
+ bfd_vma symbol_value, bfd_vma addend)
+{
+ bfd_signed_vma relocation;
+ bfd_size_type octets = offset * bfd_octets_per_byte (abfd);
+ bfd_byte *location;
+ unsigned long in1, in2, num;
+
+ /* A hacked-up version of _bfd_final_link_relocate() follows. */
+
+ /* Sanity check the address. */
+ if (octets + bfd_get_reloc_size (howto)
+ > bfd_get_section_limit_octets (abfd, input_section))
+ return bfd_reloc_outofrange;
+
+ /* This function assumes that we are dealing with a basic relocation
+ against a symbol. We want to compute the value of the symbol to
+ relocate to. This is just VALUE, the value of the symbol, plus
+ ADDEND, any addend associated with the reloc. */
+ relocation = symbol_value + addend;
+
+ BFD_ASSERT (!howto->pc_relative);
+
+ /* A hacked-up version of _bfd_relocate_contents() follows. */
+ location = data + offset * bfd_octets_per_byte (abfd);
+
+ BFD_ASSERT (!howto->pc_relative);
+
+ in1 = bfd_get_32 (abfd, location);
+ in2 = bfd_get_32 (abfd, location + 4);
+
+ /* Extract the addend - should be zero per my understanding. */
+ num = GET_INSN_FIELD (IMM16, in1) | (GET_INSN_FIELD (IMM16, in2) << 16);
+ BFD_ASSERT (!num);
+
+ relocation += num;
+
+ SET_INSN_FIELD (IMM16, in1, relocation & 0xffff);
+ SET_INSN_FIELD (IMM16, in2, relocation >> 16);
+
+ bfd_put_32 (abfd, in1, location);
+ bfd_put_32 (abfd, in2, location + 4);
+
+ return bfd_reloc_ok;
+}
+
+/* HOWTO handlers for relocations that require special handling. */
+
+static bfd_reloc_status_type
+pru_elf32_pmem_relocate (bfd *abfd, arelent *reloc_entry,
+ asymbol *symbol, void *data,
+ asection *input_section, bfd *output_bfd,
+ char **error_message)
+{
+ /* If this is a relocatable link (output_bfd test tells us), just
+ call the generic function. Any adjustment will be done at final
+ link time. */
+ if (output_bfd != NULL)
+ return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data,
+ input_section, output_bfd, error_message);
+
+ return pru_elf32_do_pmem_relocate (abfd, reloc_entry->howto,
+ input_section,
+ data, reloc_entry->address,
+ (symbol->value
+ + symbol->section->output_section->vma
+ + symbol->section->output_offset),
+ reloc_entry->addend);
+}
+
+static bfd_reloc_status_type
+pru_elf32_s10_pcrel_relocate (bfd *abfd, arelent *reloc_entry,
+ asymbol *symbol, void *data,
+ asection *input_section, bfd *output_bfd,
+ char **error_message)
+{
+ /* If this is a relocatable link (output_bfd test tells us), just
+ call the generic function. Any adjustment will be done at final
+ link time. */
+ if (output_bfd != NULL)
+ return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data,
+ input_section, output_bfd, error_message);
+
+ return pru_elf32_do_s10_pcrel_relocate (abfd, reloc_entry->howto,
+ input_section, data,
+ reloc_entry->address,
+ (symbol->value
+ + symbol->section->output_section->vma
+ + symbol->section->output_offset),
+ reloc_entry->addend);
+}
+
+static bfd_reloc_status_type
+pru_elf32_u8_pcrel_relocate (bfd *abfd, arelent *reloc_entry, asymbol *symbol,
+ void *data, asection *input_section,
+ bfd *output_bfd,
+ char **error_message)
+{
+ /* If this is a relocatable link (output_bfd test tells us), just
+ call the generic function. Any adjustment will be done at final
+ link time. */
+ if (output_bfd != NULL)
+ return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data,
+ input_section, output_bfd, error_message);
+
+ return pru_elf32_do_u8_pcrel_relocate (abfd, reloc_entry->howto,
+ input_section,
+ data, reloc_entry->address,
+ (symbol->value
+ + symbol->section->output_section->vma
+ + symbol->section->output_offset),
+ reloc_entry->addend);
+}
+
+static bfd_reloc_status_type
+pru_elf32_ldi32_relocate (bfd *abfd, arelent *reloc_entry, asymbol *symbol,
+ void *data, asection *input_section,
+ bfd *output_bfd,
+ char **error_message)
+{
+ /* If this is a relocatable link (output_bfd test tells us), just
+ call the generic function. Any adjustment will be done at final
+ link time. */
+ if (output_bfd != NULL)
+ return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data,
+ input_section, output_bfd, error_message);
+
+ return pru_elf32_do_ldi32_relocate (abfd, reloc_entry->howto,
+ input_section,
+ data, reloc_entry->address,
+ (symbol->value
+ + symbol->section->output_section->vma
+ + symbol->section->output_offset),
+ reloc_entry->addend);
+}
+
+
+/* Implement elf_backend_relocate_section. */
+static bfd_boolean
+pru_elf32_relocate_section (bfd *output_bfd,
+ struct bfd_link_info *info,
+ bfd *input_bfd,
+ asection *input_section,
+ bfd_byte *contents,
+ Elf_Internal_Rela *relocs,
+ Elf_Internal_Sym *local_syms,
+ asection **local_sections)
+{
+ Elf_Internal_Shdr *symtab_hdr;
+ struct elf_link_hash_entry **sym_hashes;
+ Elf_Internal_Rela *rel;
+ Elf_Internal_Rela *relend;
+
+ symtab_hdr = &elf_tdata (input_bfd)->symtab_hdr;
+ sym_hashes = elf_sym_hashes (input_bfd);
+ relend = relocs + input_section->reloc_count;
+
+ for (rel = relocs; rel < relend; rel++)
+ {
+ reloc_howto_type *howto;
+ unsigned long r_symndx;
+ Elf_Internal_Sym *sym;
+ asection *sec;
+ struct elf_link_hash_entry *h;
+ bfd_vma relocation;
+ bfd_reloc_status_type r = bfd_reloc_ok;
+ const char *name = NULL;
+ const char* msg = (const char*) NULL;
+ bfd_boolean unresolved_reloc;
+
+ r_symndx = ELF32_R_SYM (rel->r_info);
+
+ howto = lookup_howto ((unsigned) ELF32_R_TYPE (rel->r_info));
+ h = NULL;
+ sym = NULL;
+ sec = NULL;
+
+ if (r_symndx < symtab_hdr->sh_info)
+ {
+ sym = local_syms + r_symndx;
+ sec = local_sections[r_symndx];
+ relocation = _bfd_elf_rela_local_sym (output_bfd, sym, &sec, rel);
+ }
+ else
+ {
+ bfd_boolean warned, ignored;
+
+ RELOC_FOR_GLOBAL_SYMBOL (info, input_bfd, input_section, rel,
+ r_symndx, symtab_hdr, sym_hashes,
+ h, sec, relocation,
+ unresolved_reloc, warned, ignored);
+ }
+
+ if (sec && discarded_section (sec))
+ RELOC_AGAINST_DISCARDED_SECTION (info, input_bfd, input_section,
+ rel, 1, relend, howto, 0, contents);
+
+ /* Nothing more to do unless this is a final link. */
+ if (bfd_link_relocatable (info))
+ continue;
+
+ if (howto)
+ {
+ switch (howto->type)
+ {
+ case R_PRU_NONE:
+ /* We don't need to find a value for this symbol. It's just a
+ marker. */
+ r = bfd_reloc_ok;
+ break;
+
+ case R_PRU_U16_PMEMIMM:
+ case R_PRU_32_PMEM:
+ case R_PRU_16_PMEM:
+ r = pru_elf32_do_pmem_relocate (input_bfd, howto,
+ input_section,
+ contents, rel->r_offset,
+ relocation, rel->r_addend);
+ break;
+ case R_PRU_S10_PCREL:
+ r = pru_elf32_do_s10_pcrel_relocate (input_bfd, howto,
+ input_section,
+ contents,
+ rel->r_offset,
+ relocation,
+ rel->r_addend);
+ break;
+ case R_PRU_U8_PCREL:
+ r = pru_elf32_do_u8_pcrel_relocate (input_bfd, howto,
+ input_section,
+ contents,
+ rel->r_offset,
+ relocation,
+ rel->r_addend);
+ break;
+ case R_PRU_LDI32:
+ r = pru_elf32_do_ldi32_relocate (input_bfd, howto,
+ input_section,
+ contents,
+ rel->r_offset,
+ relocation,
+ rel->r_addend);
+ break;
+ case R_PRU_GNU_DIFF8:
+ case R_PRU_GNU_DIFF16:
+ case R_PRU_GNU_DIFF32:
+ case R_PRU_GNU_DIFF16_PMEM:
+ case R_PRU_GNU_DIFF32_PMEM:
+ /* Nothing to do here, as contents already contain the
+ diff value. */
+ r = bfd_reloc_ok;
+ break;
+
+ default:
+ r = _bfd_final_link_relocate (howto, input_bfd,
+ input_section, contents,
+ rel->r_offset, relocation,
+ rel->r_addend);
+ break;
+ }
+ }
+ else
+ r = bfd_reloc_notsupported;
+
+ if (r != bfd_reloc_ok)
+ {
+ if (h != NULL)
+ name = h->root.root.string;
+ else
+ {
+ name = bfd_elf_string_from_elf_section (input_bfd,
+ symtab_hdr->sh_link,
+ sym->st_name);
+ if (name == NULL || *name == '\0')
+ name = bfd_section_name (input_bfd, sec);
+ }
+
+ switch (r)
+ {
+ case bfd_reloc_overflow:
+ (*info->callbacks->reloc_overflow) (info, NULL, name,
+ howto->name, (bfd_vma) 0,
+ input_bfd, input_section,
+ rel->r_offset);
+ break;
+
+ case bfd_reloc_undefined:
+ (*info->callbacks->undefined_symbol) (info, name, input_bfd,
+ input_section,
+ rel->r_offset, TRUE);
+ break;
+
+ case bfd_reloc_outofrange:
+ if (msg == NULL)
+ msg = _("relocation out of range");
+ break;
+
+ case bfd_reloc_notsupported:
+ if (msg == NULL)
+ msg = _("unsupported relocation");
+ break;
+
+ case bfd_reloc_dangerous:
+ if (msg == NULL)
+ msg = _("dangerous relocation");
+ break;
+
+ default:
+ if (msg == NULL)
+ msg = _("unknown error");
+ break;
+ }
+
+ if (msg)
+ {
+ (*info->callbacks->warning) (info, msg, name, input_bfd,
+ input_section, rel->r_offset);
+ return FALSE;
+ }
+ }
+ }
+ return TRUE;
+}
+
+
+/* Perform a diff relocation. Nothing to do, as the difference value is
+ already written into the section's contents. */
+
+static bfd_reloc_status_type
+bfd_elf_pru_diff_relocate (bfd *abfd ATTRIBUTE_UNUSED,
+ arelent *reloc_entry ATTRIBUTE_UNUSED,
+ asymbol *symbol ATTRIBUTE_UNUSED,
+ void *data ATTRIBUTE_UNUSED,
+ asection *input_section ATTRIBUTE_UNUSED,
+ bfd *output_bfd ATTRIBUTE_UNUSED,
+ char **error_message ATTRIBUTE_UNUSED)
+{
+ return bfd_reloc_ok;
+}
+
+
+/* Returns whether the relocation type passed is a diff reloc. */
+
+static bfd_boolean
+elf32_pru_is_diff_reloc (Elf_Internal_Rela *irel)
+{
+ return (ELF32_R_TYPE (irel->r_info) == R_PRU_GNU_DIFF8
+ || ELF32_R_TYPE (irel->r_info) == R_PRU_GNU_DIFF16
+ || ELF32_R_TYPE (irel->r_info) == R_PRU_GNU_DIFF32
+ || ELF32_R_TYPE (irel->r_info) == R_PRU_GNU_DIFF16_PMEM
+ || ELF32_R_TYPE (irel->r_info) == R_PRU_GNU_DIFF32_PMEM);
+}
+
+/* Reduce the diff value written in the section by count if the shrinked
+ insn address happens to fall between the two symbols for which this
+ diff reloc was emitted. */
+
+static void
+elf32_pru_adjust_diff_reloc_value (bfd *abfd,
+ struct bfd_section *isec,
+ Elf_Internal_Rela *irel,
+ bfd_vma symval,
+ bfd_vma shrinked_insn_address,
+ int count)
+{
+ unsigned char *reloc_contents = NULL;
+ unsigned char *isec_contents = elf_section_data (isec)->this_hdr.contents;
+ if (isec_contents == NULL)
+ {
+ if (! bfd_malloc_and_get_section (abfd, isec, &isec_contents))
+ return;
+
+ elf_section_data (isec)->this_hdr.contents = isec_contents;
+ }
+
+ reloc_contents = isec_contents + irel->r_offset;
+
+ /* Read value written in object file. */
+ bfd_signed_vma x = 0;
+ switch (ELF32_R_TYPE (irel->r_info))
+ {
+ case R_PRU_GNU_DIFF8:
+ {
+ x = bfd_get_signed_8 (abfd, reloc_contents);
+ break;
+ }
+ case R_PRU_GNU_DIFF16:
+ {
+ x = bfd_get_signed_16 (abfd, reloc_contents);
+ break;
+ }
+ case R_PRU_GNU_DIFF32:
+ {
+ x = bfd_get_signed_32 (abfd, reloc_contents);
+ break;
+ }
+ case R_PRU_GNU_DIFF16_PMEM:
+ {
+ x = bfd_get_signed_16 (abfd, reloc_contents) * 4;
+ break;
+ }
+ case R_PRU_GNU_DIFF32_PMEM:
+ {
+ x = bfd_get_signed_32 (abfd, reloc_contents) * 4;
+ break;
+ }
+ default:
+ {
+ BFD_FAIL ();
+ }
+ }
+
+ /* For a diff reloc sym1 - sym2 the diff at assembly time (x) is written
+ into the object file at the reloc offset. sym2's logical value is
+ symval (<start_of_section>) + reloc addend. Compute the start and end
+ addresses and check if the shrinked insn falls between sym1 and sym2. */
+
+ bfd_vma end_address = symval + irel->r_addend;
+ bfd_vma start_address = end_address - x;
+
+ /* Shrink the absolute DIFF value (get the to labels "closer"
+ together), because we have removed data between labels. */
+ if (x < 0)
+ {
+ x += count;
+ /* In case the signed x is negative, restore order. */
+ SWAP_VALS (end_address, start_address);
+ }
+ else
+ {
+ x -= count;
+ }
+
+ /* Reduce the diff value by count bytes and write it back into section
+ contents. */
+
+ if (shrinked_insn_address >= start_address
+ && shrinked_insn_address <= end_address)
+ {
+ switch (ELF32_R_TYPE (irel->r_info))
+ {
+ case R_PRU_GNU_DIFF8:
+ {
+ bfd_put_signed_8 (abfd, x & 0xFF, reloc_contents);
+ break;
+ }
+ case R_PRU_GNU_DIFF16:
+ {
+ bfd_put_signed_16 (abfd, x & 0xFFFF, reloc_contents);
+ break;
+ }
+ case R_PRU_GNU_DIFF32:
+ {
+ bfd_put_signed_32 (abfd, x & 0xFFFFFFFF, reloc_contents);
+ break;
+ }
+ case R_PRU_GNU_DIFF16_PMEM:
+ {
+ bfd_put_signed_16 (abfd, (x / 4) & 0xFFFF, reloc_contents);
+ break;
+ }
+ case R_PRU_GNU_DIFF32_PMEM:
+ {
+ bfd_put_signed_32 (abfd, (x / 4) & 0xFFFFFFFF, reloc_contents);
+ break;
+ }
+ default:
+ {
+ BFD_FAIL ();
+ }
+ }
+
+ }
+}
+
+/* Delete some bytes from a section while changing the size of an instruction.
+ The parameter "addr" denotes the section-relative offset pointing just
+ behind the shrinked instruction. "addr+count" point at the first
+ byte just behind the original unshrinked instruction.
+
+ Idea copied from the AVR port. */
+
+static bfd_boolean
+pru_elf_relax_delete_bytes (bfd *abfd,
+ asection *sec,
+ bfd_vma addr,
+ int count)
+{
+ Elf_Internal_Shdr *symtab_hdr;
+ unsigned int sec_shndx;
+ bfd_byte *contents;
+ Elf_Internal_Rela *irel, *irelend;
+ Elf_Internal_Sym *isym;
+ Elf_Internal_Sym *isymbuf = NULL;
+ bfd_vma toaddr;
+ struct elf_link_hash_entry **sym_hashes;
+ struct elf_link_hash_entry **end_hashes;
+ unsigned int symcount;
+
+ symtab_hdr = &elf_tdata (abfd)->symtab_hdr;
+ sec_shndx = _bfd_elf_section_from_bfd_section (abfd, sec);
+ contents = elf_section_data (sec)->this_hdr.contents;
+
+ toaddr = sec->size;
+
+ irel = elf_section_data (sec)->relocs;
+ irelend = irel + sec->reloc_count;
+
+ /* Actually delete the bytes. */
+ if (toaddr - addr - count > 0)
+ memmove (contents + addr, contents + addr + count,
+ (size_t) (toaddr - addr - count));
+ sec->size -= count;
+
+ /* Adjust all the reloc addresses. */
+ for (irel = elf_section_data (sec)->relocs; irel < irelend; irel++)
+ {
+ bfd_vma old_reloc_address;
+
+ old_reloc_address = (sec->output_section->vma
+ + sec->output_offset + irel->r_offset);
+
+ /* Get the new reloc address. */
+ if ((irel->r_offset > addr
+ && irel->r_offset < toaddr))
+ {
+ if (debug_relax)
+ printf ("Relocation at address 0x%x needs to be moved.\n"
+ "Old section offset: 0x%x, New section offset: 0x%x \n",
+ (unsigned int) old_reloc_address,
+ (unsigned int) irel->r_offset,
+ (unsigned int) ((irel->r_offset) - count));
+
+ irel->r_offset -= count;
+ }
+
+ }
+
+ /* The reloc's own addresses are now ok. However, we need to readjust
+ the reloc's addend, i.e. the reloc's value if two conditions are met:
+ 1.) the reloc is relative to a symbol in this section that
+ is located in front of the shrinked instruction
+ 2.) symbol plus addend end up behind the shrinked instruction.
+
+ The most common case where this happens are relocs relative to
+ the section-start symbol.
+
+ This step needs to be done for all of the sections of the bfd. */
+
+ {
+ struct bfd_section *isec;
+
+ for (isec = abfd->sections; isec; isec = isec->next)
+ {
+ bfd_vma symval;
+ bfd_vma shrinked_insn_address;
+
+ if (isec->reloc_count == 0)
+ continue;
+
+ shrinked_insn_address = (sec->output_section->vma
+ + sec->output_offset + addr - count);
+
+ irel = elf_section_data (isec)->relocs;
+ /* PR 12161: Read in the relocs for this section if necessary. */
+ if (irel == NULL)
+ irel = _bfd_elf_link_read_relocs (abfd, isec, NULL, NULL, TRUE);
+
+ for (irelend = irel + isec->reloc_count;
+ irel < irelend;
+ irel++)
+ {
+ /* Read this BFD's local symbols if we haven't done
+ so already. */
+ if (isymbuf == NULL && symtab_hdr->sh_info != 0)
+ {
+ isymbuf = (Elf_Internal_Sym *) symtab_hdr->contents;
+ if (isymbuf == NULL)
+ isymbuf = bfd_elf_get_elf_syms (abfd, symtab_hdr,
+ symtab_hdr->sh_info, 0,
+ NULL, NULL, NULL);
+ if (isymbuf == NULL)
+ return FALSE;
+ }
+
+ /* Get the value of the symbol referred to by the reloc. */
+ if (ELF32_R_SYM (irel->r_info) < symtab_hdr->sh_info)
+ {
+ /* A local symbol. */
+ asection *sym_sec;
+
+ isym = isymbuf + ELF32_R_SYM (irel->r_info);
+ sym_sec = bfd_section_from_elf_index (abfd, isym->st_shndx);
+ symval = isym->st_value;
+ /* If the reloc is absolute, it will not have
+ a symbol or section associated with it. */
+ if (sym_sec == sec)
+ {
+ symval += sym_sec->output_section->vma
+ + sym_sec->output_offset;
+
+ if (debug_relax)
+ printf ("Checking if the relocation's "
+ "addend needs corrections.\n"
+ "Address of anchor symbol: 0x%x \n"
+ "Address of relocation target: 0x%x \n"
+ "Address of relaxed insn: 0x%x \n",
+ (unsigned int) symval,
+ (unsigned int) (symval + irel->r_addend),
+ (unsigned int) shrinked_insn_address);
+
+ /* Shrink the special DIFF relocations. */
+ if (elf32_pru_is_diff_reloc (irel))
+ {
+ elf32_pru_adjust_diff_reloc_value (abfd, isec, irel,
+ symval,
+ shrinked_insn_address,
+ count);
+ }
+
+ /* Fix the addend, if it is affected. */
+ if (symval <= shrinked_insn_address
+ && (symval + irel->r_addend) > shrinked_insn_address)
+ {
+
+ irel->r_addend -= count;
+
+ if (debug_relax)
+ printf ("Relocation's addend needed to be fixed \n");
+ }
+ }
+ /* else...Reference symbol is absolute.
+ No adjustment needed. */
+ }
+ /* else...Reference symbol is extern. No need for adjusting
+ the addend. */
+ }
+ }
+ }
+
+ /* Adjust the local symbols defined in this section. */
+ isym = (Elf_Internal_Sym *) symtab_hdr->contents;
+ /* Fix PR 9841, there may be no local symbols. */
+ if (isym != NULL)
+ {
+ Elf_Internal_Sym *isymend;
+
+ isymend = isym + symtab_hdr->sh_info;
+ for (; isym < isymend; isym++)
+ {
+ if (isym->st_shndx == sec_shndx)
+ {
+ if (isym->st_value > addr
+ && isym->st_value <= toaddr)
+ isym->st_value -= count;
+
+ if (isym->st_value <= addr
+ && isym->st_value + isym->st_size > addr)
+ {
+ /* If this assert fires then we have a symbol that ends
+ part way through an instruction. Does that make
+ sense? */
+ BFD_ASSERT (isym->st_value + isym->st_size >= addr + count);
+ isym->st_size -= count;
+ }
+ }
+ }
+ }
+
+ /* Now adjust the global symbols defined in this section. */
+ symcount = (symtab_hdr->sh_size / sizeof (Elf32_External_Sym)
+ - symtab_hdr->sh_info);
+ sym_hashes = elf_sym_hashes (abfd);
+ end_hashes = sym_hashes + symcount;
+ for (; sym_hashes < end_hashes; sym_hashes++)
+ {
+ struct elf_link_hash_entry *sym_hash = *sym_hashes;
+ if ((sym_hash->root.type == bfd_link_hash_defined
+ || sym_hash->root.type == bfd_link_hash_defweak)
+ && sym_hash->root.u.def.section == sec)
+ {
+ if (sym_hash->root.u.def.value > addr
+ && sym_hash->root.u.def.value <= toaddr)
+ sym_hash->root.u.def.value -= count;
+
+ if (sym_hash->root.u.def.value <= addr
+ && (sym_hash->root.u.def.value + sym_hash->size > addr))
+ {
+ /* If this assert fires then we have a symbol that ends
+ part way through an instruction. Does that make
+ sense? */
+ BFD_ASSERT (sym_hash->root.u.def.value + sym_hash->size
+ >= addr + count);
+ sym_hash->size -= count;
+ }
+ }
+ }
+
+ return TRUE;
+}
+
+static bfd_boolean
+pru_elf32_relax_section (bfd * abfd, asection * sec,
+ struct bfd_link_info * link_info,
+ bfd_boolean * again)
+{
+ Elf_Internal_Shdr * symtab_hdr;
+ Elf_Internal_Rela * internal_relocs;
+ Elf_Internal_Rela * irel;
+ Elf_Internal_Rela * irelend;
+ bfd_byte * contents = NULL;
+ Elf_Internal_Sym * isymbuf = NULL;
+
+ /* Assume nothing changes. */
+ *again = FALSE;
+
+ /* We don't have to do anything for a relocatable link, if
+ this section does not have relocs, or if this is not a
+ code section. */
+ if (bfd_link_relocatable (link_info)
+ || (sec->flags & SEC_RELOC) == 0
+ || sec->reloc_count == 0 || (sec->flags & SEC_CODE) == 0)
+ return TRUE;
+
+ symtab_hdr = & elf_tdata (abfd)->symtab_hdr;
+
+ /* Get a copy of the native relocations. */
+ internal_relocs = _bfd_elf_link_read_relocs (abfd, sec, NULL, NULL,
+ link_info->keep_memory);
+ if (internal_relocs == NULL)
+ goto error_return;
+
+ /* Walk through them looking for relaxing opportunities. */
+ irelend = internal_relocs + sec->reloc_count;
+
+ for (irel = internal_relocs; irel < irelend; irel++)
+ {
+ bfd_vma symval;
+
+ /* Get the section contents if we haven't done so already. */
+ if (contents == NULL)
+ {
+ /* Get cached copy if it exists. */
+ if (elf_section_data (sec)->this_hdr.contents != NULL)
+ contents = elf_section_data (sec)->this_hdr.contents;
+ else if (! bfd_malloc_and_get_section (abfd, sec, &contents))
+ goto error_return;
+ }
+
+ /* Read this BFD's local symbols if we haven't done so already. */
+ if (isymbuf == NULL && symtab_hdr->sh_info != 0)
+ {
+ isymbuf = (Elf_Internal_Sym *) symtab_hdr->contents;
+ if (isymbuf == NULL)
+ isymbuf = bfd_elf_get_elf_syms (abfd, symtab_hdr,
+ symtab_hdr->sh_info, 0,
+ NULL, NULL, NULL);
+ if (isymbuf == NULL)
+ goto error_return;
+ }
+
+ /* Get the value of the symbol referred to by the reloc. */
+ if (ELF32_R_SYM (irel->r_info) < symtab_hdr->sh_info)
+ {
+ /* A local symbol. */
+ Elf_Internal_Sym *isym;
+ asection *sym_sec;
+
+ isym = isymbuf + ELF32_R_SYM (irel->r_info);
+ if (isym->st_shndx == SHN_UNDEF)
+ sym_sec = bfd_und_section_ptr;
+ else if (isym->st_shndx == SHN_ABS)
+ sym_sec = bfd_abs_section_ptr;
+ else if (isym->st_shndx == SHN_COMMON)
+ sym_sec = bfd_com_section_ptr;
+ else
+ sym_sec = bfd_section_from_elf_index (abfd, isym->st_shndx);
+ symval = (isym->st_value
+ + sym_sec->output_section->vma + sym_sec->output_offset);
+ }
+ else
+ {
+ unsigned long indx;
+ struct elf_link_hash_entry *h;
+
+ /* An external symbol. */
+ indx = ELF32_R_SYM (irel->r_info) - symtab_hdr->sh_info;
+ h = elf_sym_hashes (abfd)[indx];
+ BFD_ASSERT (h != NULL);
+
+ if (h->root.type != bfd_link_hash_defined
+ && h->root.type != bfd_link_hash_defweak)
+ /* This appears to be a reference to an undefined
+ symbol. Just ignore it--it will be caught by the
+ regular reloc processing. */
+ continue;
+
+ symval = (h->root.u.def.value
+ + h->root.u.def.section->output_section->vma
+ + h->root.u.def.section->output_offset);
+ }
+
+ /* For simplicity of coding, we are going to modify the section
+ contents, the section relocs, and the BFD symbol table. We
+ must tell the rest of the code not to free up this
+ information. It would be possible to instead create a table
+ of changes which have to be made, as is done in coff-mips.c;
+ that would be more work, but would require less memory when
+ the linker is run. */
+
+ /* Check if we can remove an LDI instruction from the LDI32
+ pseudo instruction if the upper 16 operand bits are zero. */
+ if (ELF32_R_TYPE (irel->r_info) == (int) R_PRU_LDI32)
+ {
+ bfd_vma value = symval + irel->r_addend;
+
+ if (debug_relax)
+ printf ("R_PRU_LDI32 with value=0x%lx\n", (long) value);
+
+ if ((long) value >> 16 == 0)
+ {
+ /* Note that we've changed the relocs, section contents. */
+ elf_section_data (sec)->relocs = internal_relocs;
+ elf_section_data (sec)->this_hdr.contents = contents;
+ symtab_hdr->contents = (unsigned char *) isymbuf;
+
+ /* Delete bytes. */
+ if (!pru_elf_relax_delete_bytes (abfd, sec, irel->r_offset + 4, 4))
+ goto error_return;
+
+ /* We're done with deletion of the second instruction.
+ Set a regular LDI relocation for the first instruction
+ we left to load the 16-bit value into the 32-bit
+ register. */
+ irel->r_info = ELF32_R_INFO (ELF32_R_SYM (irel->r_info),
+ R_PRU_U16);
+
+ /* That will change things, so, we should relax again.
+ Note that this is not required, and it may be slow. */
+ *again = TRUE;
+ }
+ }
+ }
+
+ if (isymbuf != NULL && symtab_hdr->contents != (unsigned char *) isymbuf)
+ {
+ if (!link_info->keep_memory)
+ free (isymbuf);
+ else
+ {
+ /* Cache the symbols for elf_link_input_bfd. */
+ symtab_hdr->contents = (unsigned char *) isymbuf;
+ }
+ }
+
+ if (contents != NULL
+ && elf_section_data (sec)->this_hdr.contents != contents)
+ {
+ if (!link_info->keep_memory)
+ free (contents);
+ else
+ {
+ /* Cache the section contents for elf_link_input_bfd. */
+ elf_section_data (sec)->this_hdr.contents = contents;
+ }
+ }
+
+ if (internal_relocs != NULL
+ && elf_section_data (sec)->relocs != internal_relocs)
+ free (internal_relocs);
+
+ return TRUE;
+
+error_return:
+ if (isymbuf != NULL && symtab_hdr->contents != (unsigned char *) isymbuf)
+ free (isymbuf);
+ if (contents != NULL
+ && elf_section_data (sec)->this_hdr.contents != contents)
+ free (contents);
+ if (internal_relocs != NULL
+ && elf_section_data (sec)->relocs != internal_relocs)
+ free (internal_relocs);
+
+ return FALSE;
+}
+
+/* Free the derived linker hash table. */
+static void
+pru_elf32_link_hash_table_free (bfd *obfd)
+{
+ _bfd_elf_link_hash_table_free (obfd);
+}
+
+/* Implement bfd_elf32_bfd_link_hash_table_create. */
+static struct bfd_link_hash_table *
+pru_elf32_link_hash_table_create (bfd *abfd)
+{
+ struct elf_link_hash_table *ret;
+ bfd_size_type amt = sizeof (struct elf_link_hash_table);
+
+ ret = bfd_zmalloc (amt);
+ if (ret == NULL)
+ return NULL;
+
+ if (!_bfd_elf_link_hash_table_init (ret, abfd,
+ link_hash_newfunc,
+ sizeof (struct
+ elf_link_hash_entry),
+ PRU_ELF_DATA))
+ {
+ free (ret);
+ return NULL;
+ }
+
+ ret->root.hash_table_free = pru_elf32_link_hash_table_free;
+
+ return &ret->root;
+}
+
+#define ELF_ARCH bfd_arch_pru
+#define ELF_TARGET_ID PRU_ELF_DATA
+#define ELF_MACHINE_CODE EM_TI_PRU
+
+#define ELF_MAXPAGESIZE 1
+
+#define bfd_elf32_bfd_link_hash_table_create \
+ pru_elf32_link_hash_table_create
+
+/* Relocation table lookup macros. */
+
+#define bfd_elf32_bfd_reloc_type_lookup pru_elf32_bfd_reloc_type_lookup
+#define bfd_elf32_bfd_reloc_name_lookup pru_elf32_bfd_reloc_name_lookup
+
+/* elf_info_to_howto (using RELA relocations). */
+
+#define elf_info_to_howto pru_elf32_info_to_howto
+
+/* elf backend functions. */
+
+#define elf_backend_rela_normal 1
+
+#define elf_backend_relocate_section pru_elf32_relocate_section
+#define bfd_elf32_bfd_relax_section pru_elf32_relax_section
+
+#define TARGET_LITTLE_SYM pru_elf32_vec
+#define TARGET_LITTLE_NAME "elf32-pru"
+
+#include "elf32-target.h"
diff --git a/bfd/libbfd.h b/bfd/libbfd.h
index 30be5dd..5999527 100644
--- a/bfd/libbfd.h
+++ b/bfd/libbfd.h
@@ -2741,6 +2741,18 @@ static const char *const bfd_reloc_code_real_names[] = { "@@uninitialized@@",
"BFD_RELOC_NIOS2_R2_L5I4X1",
"BFD_RELOC_NIOS2_R2_T1X1I6",
"BFD_RELOC_NIOS2_R2_T1X1I6_2",
+ "BFD_RELOC_PRU_U16",
+ "BFD_RELOC_PRU_U16_PMEMIMM",
+ "BFD_RELOC_PRU_LDI32",
+ "BFD_RELOC_PRU_S10_PCREL",
+ "BFD_RELOC_PRU_U8_PCREL",
+ "BFD_RELOC_PRU_32_PMEM",
+ "BFD_RELOC_PRU_16_PMEM",
+ "BFD_RELOC_PRU_GNU_DIFF8",
+ "BFD_RELOC_PRU_GNU_DIFF16",
+ "BFD_RELOC_PRU_GNU_DIFF32",
+ "BFD_RELOC_PRU_GNU_DIFF16_PMEM",
+ "BFD_RELOC_PRU_GNU_DIFF32_PMEM",
"BFD_RELOC_IQ2000_OFFSET_16",
"BFD_RELOC_IQ2000_OFFSET_21",
"BFD_RELOC_IQ2000_UHI16",
diff --git a/bfd/po/SRC-POTFILES.in b/bfd/po/SRC-POTFILES.in
index 8fcf04d..7ecdb0a 100644
--- a/bfd/po/SRC-POTFILES.in
+++ b/bfd/po/SRC-POTFILES.in
@@ -119,6 +119,7 @@ cpu-pdp11.c
cpu-pj.c
cpu-plugin.c
cpu-powerpc.c
+cpu-pru.c
cpu-riscv.c
cpu-rl78.c
cpu-rs6000.c
@@ -212,6 +213,7 @@ elf32-nios2.c
elf32-or1k.c
elf32-pj.c
elf32-ppc.c
+elf32-pru.c
elf32-rl78.c
elf32-rx.c
elf32-s390.c
diff --git a/bfd/reloc.c b/bfd/reloc.c
index 3c7b606..4a79a23 100644
--- a/bfd/reloc.c
+++ b/bfd/reloc.c
@@ -6517,6 +6517,54 @@ ENUMDOC
Relocations used by the Altera Nios II core.
ENUM
+ BFD_RELOC_PRU_U16
+ENUMDOC
+ PRU LDI 16-bit unsigned data-memory relocation.
+ENUM
+ BFD_RELOC_PRU_U16_PMEMIMM
+ENUMDOC
+ PRU LDI 16-bit unsigned instruction-memory relocation.
+ENUM
+ BFD_RELOC_PRU_LDI32
+ENUMDOC
+ PRU relocation for two consecutive LDI load instructions that load a
+ 32 bit value into a register. If the higher bits are all zero, then
+ the second instruction may be relaxed.
+ENUM
+ BFD_RELOC_PRU_S10_PCREL
+ENUMDOC
+ PRU QBBx 10-bit signed PC-relative relocation.
+ENUM
+ BFD_RELOC_PRU_U8_PCREL
+ENUMDOC
+ PRU 8-bit unsigned relocation used for the LOOP instruction.
+ENUM
+ BFD_RELOC_PRU_32_PMEM
+ENUMX
+ BFD_RELOC_PRU_16_PMEM
+ENUMDOC
+ PRU Program Memory relocations. Used to convert from byte addressing to
+ 32-bit word addressing.
+ENUM
+ BFD_RELOC_PRU_GNU_DIFF8
+ENUMX
+ BFD_RELOC_PRU_GNU_DIFF16
+ENUMX
+ BFD_RELOC_PRU_GNU_DIFF32
+ENUMX
+ BFD_RELOC_PRU_GNU_DIFF16_PMEM
+ENUMX
+ BFD_RELOC_PRU_GNU_DIFF32_PMEM
+ENUMDOC
+ PRU relocations to mark the difference of two local symbols.
+ These are only needed to support linker relaxation and can be ignored
+ when not relaxing. The field is set to the value of the difference
+ assuming no relaxation. The relocation encodes the position of the
+ second symbol so the linker can determine whether to adjust the field
+ value. The PMEM variants encode the word difference, instead of byte
+ difference between symbols.
+
+ENUM
BFD_RELOC_IQ2000_OFFSET_16
ENUMX
BFD_RELOC_IQ2000_OFFSET_21
diff --git a/bfd/targets.c b/bfd/targets.c
index 8e6158e..7ae8eb4 100644
--- a/bfd/targets.c
+++ b/bfd/targets.c
@@ -799,6 +799,7 @@ extern const bfd_target powerpc_pe_le_vec;
extern const bfd_target powerpc_pei_vec;
extern const bfd_target powerpc_pei_le_vec;
extern const bfd_target powerpc_xcoff_vec;
+extern const bfd_target pru_elf32_vec;
extern const bfd_target riscv_elf32_vec;
extern const bfd_target riscv_elf64_vec;
extern const bfd_target rl78_elf32_vec;
@@ -1305,6 +1306,8 @@ static const bfd_target * const _bfd_target_vector[] =
&powerpc_xcoff_vec,
#endif
+ &pru_elf32_vec,
+
#ifdef BFD64
&riscv_elf32_vec,
&riscv_elf64_vec,
generated by cgit v1.1 at 2024-11-16 05:25:03 +0000