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SUSE:SLE-12-SP3:Update
grub2.11978
grub2-arm64-Add-support-for-relocations-needed-...
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File grub2-arm64-Add-support-for-relocations-needed-for-linaro-.patch of Package grub2.11978
From 605eecc985b677d196b558d4d8cec6592a68e462 Mon Sep 17 00:00:00 2001 From: Vladimir Serbinenko <phcoder@gmail.com> Date: Fri, 22 Jan 2016 19:09:37 +0100 Subject: [PATCH] arm64: Add support for relocations needed for linaro gcc --- grub-core/kern/arm64/dl.c | 18 ++++++++++++++++++ grub-core/kern/arm64/dl_helper.c | 40 ++++++++++++++++++++++++++++++++++++++++ include/grub/arm64/reloc.h | 8 ++++++++ include/grub/elf.h | 3 +++ util/grub-mkimagexx.c | 31 +++++++++++++++++++++++++++++++ util/grub-module-verifier.c | 8 +++++++- 6 files changed, 107 insertions(+), 1 deletion(-) Index: grub-2.02~beta2/grub-core/kern/arm64/dl.c =================================================================== --- grub-2.02~beta2.orig/grub-core/kern/arm64/dl.c +++ grub-2.02~beta2/grub-core/kern/arm64/dl.c @@ -132,6 +132,12 @@ grub_arch_dl_relocate_symbols (grub_dl_t *abs_place = (grub_uint64_t) sym_addr; } break; + case R_AARCH64_ADD_ABS_LO12_NC: + grub_arm64_set_abs_lo12 (place, sym_addr); + break; + case R_AARCH64_LDST64_ABS_LO12_NC: + grub_arm64_set_abs_lo12_ldst64 (place, sym_addr); + break; case R_AARCH64_CALL26: case R_AARCH64_JUMP26: { @@ -154,6 +160,18 @@ grub_arch_dl_relocate_symbols (grub_dl_t grub_arm64_set_xxxx26_offset (place, offset); } break; + case R_AARCH64_ADR_PREL_PG_HI21: + { + grub_int64_t offset = (sym_addr & ~0xfffULL) - (((grub_uint64_t) place) & ~0xfffULL); + + if (!grub_arm64_check_hi21_signed (offset)) + return grub_error (GRUB_ERR_BAD_MODULE, + "HI21 out of range"); + + grub_arm64_set_hi21 (place, offset); + } + break; + default: return grub_error (GRUB_ERR_NOT_IMPLEMENTED_YET, N_("relocation 0x%x is not implemented yet"), Index: grub-2.02~beta2/grub-core/kern/arm64/dl_helper.c =================================================================== --- grub-2.02~beta2.orig/grub-core/kern/arm64/dl_helper.c +++ grub-2.02~beta2/grub-core/kern/arm64/dl_helper.c @@ -53,3 +53,43 @@ grub_arm64_set_xxxx26_offset (grub_uint3 *place &= insmask; *place |= grub_cpu_to_le32 (offset >> 2) & ~insmask; } + +int +grub_arm64_check_hi21_signed (grub_int64_t offset) +{ + if (offset != (grub_int64_t)(grub_int32_t)offset) + return 0; + return 1; +} + +void +grub_arm64_set_hi21 (grub_uint32_t *place, grub_int64_t offset) +{ + const grub_uint32_t insmask = grub_cpu_to_le32_compile_time (0x9f00001f); + grub_uint32_t val; + + offset >>= 12; + + val = ((offset & 3) << 29) | (((offset >> 2) & 0x7ffff) << 5); + + *place &= insmask; + *place |= grub_cpu_to_le32 (val) & ~insmask; +} + +void +grub_arm64_set_abs_lo12 (grub_uint32_t *place, grub_int64_t target) +{ + const grub_uint32_t insmask = grub_cpu_to_le32_compile_time (0xffc003ff); + + *place &= insmask; + *place |= grub_cpu_to_le32 (target << 10) & ~insmask; +} + +void +grub_arm64_set_abs_lo12_ldst64 (grub_uint32_t *place, grub_int64_t target) +{ + const grub_uint32_t insmask = grub_cpu_to_le32_compile_time (0xfff803ff); + + *place &= insmask; + *place |= grub_cpu_to_le32 (target << 7) & ~insmask; +} Index: grub-2.02~beta2/include/grub/arm64/reloc.h =================================================================== --- grub-2.02~beta2.orig/include/grub/arm64/reloc.h +++ grub-2.02~beta2/include/grub/arm64/reloc.h @@ -22,5 +22,13 @@ int grub_arm_64_check_xxxx26_offset (grub_int64_t offset); void grub_arm64_set_xxxx26_offset (grub_uint32_t *place, grub_int64_t offset); +int +grub_arm64_check_hi21_signed (grub_int64_t offset); +void +grub_arm64_set_hi21 (grub_uint32_t *place, grub_int64_t offset); +void +grub_arm64_set_abs_lo12 (grub_uint32_t *place, grub_int64_t target); +void +grub_arm64_set_abs_lo12_ldst64 (grub_uint32_t *place, grub_int64_t target); #endif Index: grub-2.02~beta2/include/grub/elf.h =================================================================== --- grub-2.02~beta2.orig/include/grub/elf.h +++ grub-2.02~beta2/include/grub/elf.h @@ -2068,6 +2068,9 @@ typedef Elf32_Addr Elf32_Conflict; #define R_AARCH64_NONE 0 /* No relocation. */ #define R_AARCH64_ABS64 257 /* Direct 64 bit. */ #define R_AARCH64_ABS32 258 /* Direct 32 bit. */ +#define R_AARCH64_ADR_PREL_PG_HI21 275 +#define R_AARCH64_ADD_ABS_LO12_NC 277 +#define R_AARCH64_LDST64_ABS_LO12_NC 286 #define R_AARCH64_JUMP26 282 /* 26-bit relative. */ #define R_AARCH64_CALL26 283 /* 26-bit relative. */ #define R_AARCH64_COPY 1024 /* Copy symbol at runtime. */ Index: grub-2.02~beta2/util/grub-mkimagexx.c =================================================================== --- grub-2.02~beta2.orig/util/grub-mkimagexx.c +++ grub-2.02~beta2/util/grub-mkimagexx.c @@ -836,6 +836,14 @@ SUFFIX (relocate_addresses) (Elf_Ehdr *e *target = grub_host_to_target64 (grub_target_to_host64 (*target) + sym_addr); } break; + case R_AARCH64_ADD_ABS_LO12_NC: + grub_arm64_set_abs_lo12 ((grub_uint32_t *) target, + sym_addr); + break; + case R_AARCH64_LDST64_ABS_LO12_NC: + grub_arm64_set_abs_lo12_ldst64 ((grub_uint32_t *) target, + sym_addr); + break; case R_AARCH64_JUMP26: case R_AARCH64_CALL26: { @@ -848,6 +856,17 @@ SUFFIX (relocate_addresses) (Elf_Ehdr *e sym_addr); } break; + case R_AARCH64_ADR_PREL_PG_HI21: + { + sym_addr &= ~0xfffULL; + sym_addr -= (offset + SUFFIX (entry_point)) & ~0xfffULL; + if (!grub_arm64_check_hi21_signed (sym_addr)) + grub_util_error ("%s", "CALL26 Relocation out of range"); + + grub_arm64_set_hi21((grub_uint32_t *)target, + sym_addr); + } + break; default: grub_util_error (_("relocation 0x%x is not implemented yet"), (unsigned int) ELF_R_TYPE (info)); @@ -1200,6 +1219,15 @@ SUFFIX (make_reloc_section) (Elf_Ehdr *e case R_AARCH64_CALL26: case R_AARCH64_JUMP26: break; + /* Page-relative relocations do not require fixup entries. */ + case R_AARCH64_ADR_PREL_PG_HI21: + /* We page-align the whole kernel, so no need + for fixup entries. + */ + case R_AARCH64_ADD_ABS_LO12_NC: + case R_AARCH64_LDST64_ABS_LO12_NC: + break; + default: grub_util_error (_("relocation 0x%x is not implemented yet"), (unsigned int) ELF_R_TYPE (info)); @@ -1343,6 +1371,9 @@ SUFFIX (locate_sections) (const char *ke Elf_Shdr *s; *all_align = 1; + /* Page-aligning simplifies relocation handling. */ + if (image_target->elf_target == EM_AARCH64) + *all_align = 4096; section_addresses = xmalloc (sizeof (*section_addresses) * num_sections); memset (section_addresses, 0, sizeof (*section_addresses) * num_sections);
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