From 5fb945116ba058eb8f032f94ab2e0c71024388ec Mon Sep 17 00:00:00 2001 From: Stafford Horne Date: Sun, 2 May 2021 06:02:15 +0900 Subject: [PATCH] or1k: Implement relocation R_OR1K_GOT_AHI16 for gotha() The gotha() relocation mnemonic will be outputted by OpenRISC GCC when using the -mcmodel=large option. This relocation is used along with got() to generate 32-bit GOT offsets. This increases the previous GOT offset limit from the previous 16-bit (64K) limit. This is needed on large binaries where the GOT grows larger than 64k. bfd/ChangeLog: PR 21464 * bfd-in2.h: Add BFD_RELOC_OR1K_GOT_AHI16 relocation. * elf32-or1k.c (or1k_elf_howto_table, or1k_reloc_map): Likewise. (or1k_final_link_relocate, or1k_elf_relocate_section, or1k_elf_check_relocs): Likewise. * libbfd.h (bfd_reloc_code_real_names): Likewise. * reloc.c: Likewise. cpu/ChangeLog: PR 21464 * or1k.opc (or1k_imm16_relocs, parse_reloc): Define parse logic for gotha() relocation. include/ChangeLog: PR 21464 * elf/or1k.h (elf_or1k_reloc_type): Define R_OR1K_GOT_AHI16 number. opcodes/ChangeLog: PR 21464 * or1k-asm.c: Regenerate. gas/ChangeLog: PR 21464 * testsuite/gas/or1k/reloc-1.s: Add test for new relocation. * testsuite/gas/or1k/reloc-1.d: Add test result for new relocation. Cc: Giulio Benetti fixup reloc, add tests Signed-off-by: Giulio Benetti --- bfd/bfd-in2.h | 1 + bfd/elf32-or1k.c | 21 ++++++++++++++++++++- bfd/libbfd.h | 1 + bfd/reloc.c | 2 ++ cpu/or1k.opc | 7 ++++++- gas/testsuite/gas/or1k/reloc-1.d | 4 +++- gas/testsuite/gas/or1k/reloc-1.s | 4 ++++ include/elf/or1k.h | 1 + opcodes/or1k-asm.c | 7 ++++++- 9 files changed, 44 insertions(+), 4 deletions(-) diff --git a/bfd/bfd-in2.h b/bfd/bfd-in2.h index 7c13bc8c91a..ae1082a67c2 100644 --- a/bfd/bfd-in2.h +++ b/bfd/bfd-in2.h @@ -5017,6 +5017,7 @@ then it may be truncated to 8 bits. */ BFD_RELOC_OR1K_TLS_TPOFF, BFD_RELOC_OR1K_TLS_DTPOFF, BFD_RELOC_OR1K_TLS_DTPMOD, + BFD_RELOC_OR1K_GOT_AHI16, /* H8 elf Relocations. */ BFD_RELOC_H8_DIR16A8, diff --git a/bfd/elf32-or1k.c b/bfd/elf32-or1k.c index 58246875546..1273fbacb3c 100644 --- a/bfd/elf32-or1k.c +++ b/bfd/elf32-or1k.c @@ -808,6 +808,20 @@ static reloc_howto_type or1k_elf_howto_table[] = 0, /* Source Mask. */ 0x03ffffff, /* Dest Mask. */ TRUE), /* PC relative offset? */ + + HOWTO (R_OR1K_GOT_AHI16, /* type */ + 16, /* rightshift */ + 2, /* size (0 = byte, 1 = short, 2 = long) */ + 16, /* bitsize */ + FALSE, /* pc_relative */ + 0, /* bitpos */ + complain_overflow_signed, /* complain_on_overflow */ + bfd_elf_generic_reloc, /* special_function */ + "R_OR1K_GOT_AHI16", /* name */ + FALSE, /* partial_inplace */ + 0, /* src_mask */ + 0xffff, /* dst_mask */ + FALSE), /* pcrel_offset */ }; /* Map BFD reloc types to Or1k ELF reloc types. */ @@ -871,6 +885,7 @@ static const struct or1k_reloc_map or1k_reloc_map[] = { BFD_RELOC_OR1K_TLS_IE_LO13, R_OR1K_TLS_IE_LO13 }, { BFD_RELOC_OR1K_SLO13, R_OR1K_SLO13 }, { BFD_RELOC_OR1K_PLTA26, R_OR1K_PLTA26 }, + { BFD_RELOC_OR1K_GOT_AHI16, R_OR1K_GOT_AHI16 }, }; #define TLS_UNKNOWN 0 @@ -1080,6 +1095,7 @@ or1k_final_link_relocate (reloc_howto_type *howto, bfd *input_bfd, switch (howto->type) { case R_OR1K_AHI16: + case R_OR1K_GOT_AHI16: case R_OR1K_GOTOFF_AHI16: case R_OR1K_TLS_IE_AHI16: case R_OR1K_TLS_LE_AHI16: @@ -1344,6 +1360,7 @@ or1k_elf_relocate_section (bfd *output_bfd, } break; + case R_OR1K_GOT_AHI16: case R_OR1K_GOT16: case R_OR1K_GOT_PG21: case R_OR1K_GOT_LO13: @@ -1435,7 +1452,8 @@ or1k_elf_relocate_section (bfd *output_bfd, /* The GOT_PG21 and GOT_LO13 relocs are pc-relative, while the GOT16 reloc is GOT relative. */ relocation = got_base + off; - if (r_type == R_OR1K_GOT16) + if (r_type == R_OR1K_GOT16 + || r_type == R_OR1K_GOT_AHI16) relocation -= got_sym_value; /* Addend should be zero. */ @@ -1943,6 +1961,7 @@ or1k_elf_check_relocs (bfd *abfd, } break; + case R_OR1K_GOT_AHI16: case R_OR1K_GOT16: case R_OR1K_GOT_PG21: case R_OR1K_GOT_LO13: diff --git a/bfd/libbfd.h b/bfd/libbfd.h index d97d4e57a77..9edc71e0558 100644 --- a/bfd/libbfd.h +++ b/bfd/libbfd.h @@ -2704,6 +2704,7 @@ static const char *const bfd_reloc_code_real_names[] = { "@@uninitialized@@", "BFD_RELOC_OR1K_TLS_TPOFF", "BFD_RELOC_OR1K_TLS_DTPOFF", "BFD_RELOC_OR1K_TLS_DTPMOD", + "BFD_RELOC_OR1K_GOT_AHI16", "BFD_RELOC_H8_DIR16A8", "BFD_RELOC_H8_DIR16R8", "BFD_RELOC_H8_DIR24A8", diff --git a/bfd/reloc.c b/bfd/reloc.c index 33cd67150cf..f57ad14a501 100644 --- a/bfd/reloc.c +++ b/bfd/reloc.c @@ -6175,6 +6175,8 @@ ENUMX BFD_RELOC_OR1K_GOTPC_HI16 ENUMX BFD_RELOC_OR1K_GOTPC_LO16 +ENUMX + BFD_RELOC_OR1K_GOT_AHI16 ENUMX BFD_RELOC_OR1K_GOT16 ENUMX diff --git a/cpu/or1k.opc b/cpu/or1k.opc index f0adcbb00a5..5d20a1f33a7 100644 --- a/cpu/or1k.opc +++ b/cpu/or1k.opc @@ -193,7 +193,7 @@ static const bfd_reloc_code_real_type or1k_imm16_relocs[][6] = { BFD_RELOC_OR1K_GOT_LO13, BFD_RELOC_UNUSED, BFD_RELOC_UNUSED, - BFD_RELOC_UNUSED }, + BFD_RELOC_OR1K_GOT_AHI16 }, { BFD_RELOC_OR1K_GOTPC_LO16, BFD_RELOC_UNUSED, BFD_RELOC_UNUSED, @@ -296,6 +296,11 @@ parse_reloc (const char **strp) str += 5; cls = RCLASS_TPOFF; } + else if (strncasecmp (str, "got", 3) == 0) + { + str += 3; + cls = RCLASS_GOT; + } if (strncasecmp (str, "hi(", 3) == 0) { diff --git a/gas/testsuite/gas/or1k/reloc-1.d b/gas/testsuite/gas/or1k/reloc-1.d index d1bcf5608bb..3a001c4ed99 100644 --- a/gas/testsuite/gas/or1k/reloc-1.d +++ b/gas/testsuite/gas/or1k/reloc-1.d @@ -68,5 +68,7 @@ OFFSET TYPE VALUE 000000ec R_OR1K_LO13 x 000000f0 R_OR1K_GOT_LO13 x 000000f4 R_OR1K_SLO13 x - +000000f8 R_OR1K_GOT_AHI16 x +000000fc R_OR1K_GOT_AHI16 x +00000100 R_OR1K_GOT_AHI16 x diff --git a/gas/testsuite/gas/or1k/reloc-1.s b/gas/testsuite/gas/or1k/reloc-1.s index e76abef6532..562609aa869 100644 --- a/gas/testsuite/gas/or1k/reloc-1.s +++ b/gas/testsuite/gas/or1k/reloc-1.s @@ -74,3 +74,7 @@ l.lbz r5,po(x)(r3) l.lbz r5,gotpo(x)(r3) l.sb po(x)(r3),r6 + + l.movhi r4,gotha(x) + l.ori r3,r4,gotha(x) + l.addi r3,r4,gotha(x) diff --git a/include/elf/or1k.h b/include/elf/or1k.h index a215ef5c17e..dff37d875f2 100644 --- a/include/elf/or1k.h +++ b/include/elf/or1k.h @@ -77,6 +77,7 @@ START_RELOC_NUMBERS (elf_or1k_reloc_type) RELOC_NUMBER (R_OR1K_TLS_IE_LO13, 51) RELOC_NUMBER (R_OR1K_SLO13, 52) RELOC_NUMBER (R_OR1K_PLTA26, 53) + RELOC_NUMBER (R_OR1K_GOT_AHI16, 54) END_RELOC_NUMBERS (R_OR1K_max) #define EF_OR1K_NODELAY (1UL << 0) diff --git a/opcodes/or1k-asm.c b/opcodes/or1k-asm.c index 4715c4f2826..a72a4e85363 100644 --- a/opcodes/or1k-asm.c +++ b/opcodes/or1k-asm.c @@ -177,7 +177,7 @@ static const bfd_reloc_code_real_type or1k_imm16_relocs[][6] = { BFD_RELOC_OR1K_GOT_LO13, BFD_RELOC_UNUSED, BFD_RELOC_UNUSED, - BFD_RELOC_UNUSED }, + BFD_RELOC_OR1K_GOT_AHI16 }, { BFD_RELOC_OR1K_GOTPC_LO16, BFD_RELOC_UNUSED, BFD_RELOC_UNUSED, @@ -280,6 +280,11 @@ parse_reloc (const char **strp) str += 5; cls = RCLASS_TPOFF; } + else if (strncasecmp (str, "got", 3) == 0) + { + str += 3; + cls = RCLASS_GOT; + } if (strncasecmp (str, "hi(", 3) == 0) { -- 2.25.1