diff options
Diffstat (limited to 'libc-top-half/musl/arch/x32/reloc.h')
| -rw-r--r-- | libc-top-half/musl/arch/x32/reloc.h | 31 |
1 files changed, 31 insertions, 0 deletions
diff --git a/libc-top-half/musl/arch/x32/reloc.h b/libc-top-half/musl/arch/x32/reloc.h new file mode 100644 index 0000000..dc039ad --- /dev/null +++ b/libc-top-half/musl/arch/x32/reloc.h @@ -0,0 +1,31 @@ +#define LDSO_ARCH "x32" + +/* FIXME: x32 is very strange in its use of 64-bit relocation types in + * a 32-bit environment. As long as the memory at reloc_addr is + * zero-filled prior to relocations, just treating 64-bit relocations + * as operating on 32-bit slots should be fine, but this should be + * checked. In particular, R_X86_64_64, R_X86_64_DTPOFF64, and + * R_X86_64_TPOFF64 may need checking. */ + +/* The R_X86_64_64, R_X86_64_DTPOFF32, and R_X86_64_TPOFF32 reloc types + * were previously mapped in the switch table form of this file; however, + * they do not seem to be used/usable for anything. If needed, new + * mappings will have to be added. */ + +#define REL_SYMBOLIC R_X86_64_32 +#define REL_OFFSET R_X86_64_PC32 +#define REL_GOT R_X86_64_GLOB_DAT +#define REL_PLT R_X86_64_JUMP_SLOT +#define REL_RELATIVE R_X86_64_RELATIVE +#define REL_COPY R_X86_64_COPY +#define REL_DTPMOD R_X86_64_DTPMOD64 +#define REL_DTPOFF R_X86_64_DTPOFF64 +#define REL_TPOFF R_X86_64_TPOFF64 + +#define CRTJMP(pc,sp) __asm__ __volatile__( \ + "mov %1,%%esp ; jmp *%0" : : "r"((uint64_t)(uintptr_t)pc), "r"(sp) : "memory" ) + +#define GETFUNCSYM(fp, sym, got) __asm__ ( \ + ".hidden " #sym "\n" \ + " lea " #sym "(%%rip),%0\n" \ + : "=r"(*fp) : : "memory" ) |