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[build] Allow elf2efi.c to build on FreeBSD 

The elf.h on FreeBSD defines ELF_R_TYPE and ELF_R_SYM (based on the
host platform) and omits some but not all of the AArch64 relocation
types.

Fix by undefining ELF_R_TYPE and ELF_R_SYM in favour of our own
definitions, and by placing each potentially missing relocation type
within an individual #ifdef guard.

Signed-off-by: Michael Brown <mcb30@ipxe.org>
pull/242/head
Michael Brown 2021-01-30 00:11:33 +00:00
parent 25b675c3db
commit f034ae59f6
1 changed files with 30 additions and 7 deletions
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37
src/util/elf2efi.c
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@ -38,6 +38,9 @@
#define eprintf(...) fprintf ( stderr, __VA_ARGS__ )
#undef ELF_R_TYPE
#undef ELF_R_SYM
#ifdef EFI_TARGET32
#define EFI_IMAGE_NT_HEADERS EFI_IMAGE_NT_HEADERS32
@ -72,21 +75,46 @@
#define ELF_MREL( mach, type ) ( (mach) | ( (type) << 16 ) )
/* Allow for building with older versions of elf.h */
/* Provide constants missing on some platforms */
#ifndef EM_AARCH64
#define EM_AARCH64 183
#endif
#ifndef R_AARCH64_NONE
#define R_AARCH64_NONE 0
#endif
#ifndef R_AARCH64_NULL
#define R_AARCH64_NULL 256
#endif
#ifndef R_AARCH64_ABS64
#define R_AARCH64_ABS64 257
#endif
#ifndef R_AARCH64_CALL26
#define R_AARCH64_CALL26 283
#endif
#ifndef R_AARCH64_JUMP26
#define R_AARCH64_JUMP26 282
#endif
#ifndef R_AARCH64_ADR_PREL_LO21
#define R_AARCH64_ADR_PREL_LO21 274
#endif
#ifndef R_AARCH64_ADR_PREL_PG_HI21
#define R_AARCH64_ADR_PREL_PG_HI21 275
#endif
#ifndef R_AARCH64_ADD_ABS_LO12_NC
#define R_AARCH64_ADD_ABS_LO12_NC 277
#endif
#ifndef R_AARCH64_LDST8_ABS_LO12_NC
#define R_AARCH64_LDST8_ABS_LO12_NC 278
#endif
#ifndef R_AARCH64_LDST16_ABS_LO12_NC
#define R_AARCH64_LDST16_ABS_LO12_NC 284
#endif
#ifndef R_AARCH64_LDST32_ABS_LO12_NC
#define R_AARCH64_LDST32_ABS_LO12_NC 285
#endif
#ifndef R_AARCH64_LDST64_ABS_LO12_NC
#define R_AARCH64_LDST64_ABS_LO12_NC 286
#endif /* EM_AARCH64 */
#endif
#ifndef R_ARM_CALL
#define R_ARM_CALL 28
#endif
@ -97,11 +125,6 @@
#define R_ARM_V4BX 40
#endif
/* Seems to be missing from elf.h */
#ifndef R_AARCH64_NULL
#define R_AARCH64_NULL 256
#endif
#define EFI_FILE_ALIGN 0x20
struct elf_file {