riscv: tools: Add big endian target support to prelink-riscv
Signed-off-by: Marcus Comstedt <marcus@mc.pp.se> Cc: Rick Chen <rick@andestech.com> Reviewed-by: Rick Chen <rick@andestech.com>
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@ -47,12 +47,28 @@ const char *argv0;
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exit(EXIT_FAILURE); \
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} while (0)
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#define PRELINK_BYTEORDER le
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#define PRELINK_INC_BITS 32
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#include "prelink-riscv.inc"
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#undef PRELINK_BYTEORDER
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#undef PRELINK_INC_BITS
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#define PRELINK_BYTEORDER le
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#define PRELINK_INC_BITS 64
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#include "prelink-riscv.inc"
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#undef PRELINK_BYTEORDER
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#undef PRELINK_INC_BITS
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#define PRELINK_BYTEORDER be
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#define PRELINK_INC_BITS 32
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#include "prelink-riscv.inc"
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#undef PRELINK_BYTEORDER
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#undef PRELINK_INC_BITS
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#define PRELINK_BYTEORDER be
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#define PRELINK_INC_BITS 64
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#include "prelink-riscv.inc"
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#undef PRELINK_BYTEORDER
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#undef PRELINK_INC_BITS
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int main(int argc, const char *const *argv)
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@ -88,11 +104,19 @@ int main(int argc, const char *const *argv)
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die("Invalid ELF file %s", argv[1]);
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bool is64 = e_ident[EI_CLASS] == ELFCLASS64;
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bool isbe = e_ident[EI_DATA] == ELFDATA2MSB;
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if (is64)
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prelink64(data);
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if (is64) {
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if (isbe)
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prelink_be64(data);
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else
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prelink32(data);
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prelink_le64(data);
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} else {
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if (isbe)
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prelink_be32(data);
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else
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prelink_le32(data);
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}
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return 0;
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}
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@ -12,9 +12,9 @@
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#define CONCAT(x, y) CONCAT_IMPL(x, y)
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#define CONCAT3(x, y, z) CONCAT(CONCAT(x, y), z)
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#define prelink_nn CONCAT(prelink, PRELINK_INC_BITS)
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#define prelink_bonn CONCAT3(prelink_, PRELINK_BYTEORDER, PRELINK_INC_BITS)
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#define uintnn_t CONCAT3(uint, PRELINK_INC_BITS, _t)
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#define get_offset_nn CONCAT(get_offset_, PRELINK_INC_BITS)
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#define get_offset_bonn CONCAT3(get_offset_, PRELINK_BYTEORDER, PRELINK_INC_BITS)
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#define Elf_Ehdr CONCAT3(Elf, PRELINK_INC_BITS, _Ehdr)
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#define Elf_Phdr CONCAT3(Elf, PRELINK_INC_BITS, _Phdr)
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#define Elf_Rela CONCAT3(Elf, PRELINK_INC_BITS, _Rela)
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@ -23,35 +23,38 @@
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#define Elf_Addr CONCAT3(Elf, PRELINK_INC_BITS, _Addr)
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#define ELF_R_TYPE CONCAT3(ELF, PRELINK_INC_BITS, _R_TYPE)
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#define ELF_R_SYM CONCAT3(ELF, PRELINK_INC_BITS, _R_SYM)
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#define lenn_to_cpu CONCAT3(le, PRELINK_INC_BITS, _to_cpu)
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#define target16_to_cpu CONCAT(PRELINK_BYTEORDER, 16_to_cpu)
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#define target32_to_cpu CONCAT(PRELINK_BYTEORDER, 32_to_cpu)
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#define target64_to_cpu CONCAT(PRELINK_BYTEORDER, 64_to_cpu)
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#define targetnn_to_cpu CONCAT3(PRELINK_BYTEORDER, PRELINK_INC_BITS, _to_cpu)
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static void* get_offset_nn (void* data, Elf_Phdr* phdrs, size_t phnum, Elf_Addr addr)
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static void* get_offset_bonn (void* data, Elf_Phdr* phdrs, size_t phnum, Elf_Addr addr)
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{
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Elf_Phdr *p;
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for (p = phdrs; p < phdrs + phnum; ++p)
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if (lenn_to_cpu(p->p_vaddr) <= addr && lenn_to_cpu(p->p_vaddr) + lenn_to_cpu(p->p_memsz) > addr)
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return data + lenn_to_cpu(p->p_offset) + (addr - lenn_to_cpu(p->p_vaddr));
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if (targetnn_to_cpu(p->p_vaddr) <= addr && targetnn_to_cpu(p->p_vaddr) + targetnn_to_cpu(p->p_memsz) > addr)
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return data + targetnn_to_cpu(p->p_offset) + (addr - targetnn_to_cpu(p->p_vaddr));
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return NULL;
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}
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static void prelink_nn(void *data)
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static void prelink_bonn(void *data)
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{
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Elf_Ehdr *ehdr = data;
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Elf_Phdr *p;
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Elf_Dyn *dyn;
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Elf_Rela *r;
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if (le16_to_cpu(ehdr->e_machine) != EM_RISCV)
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if (target16_to_cpu(ehdr->e_machine) != EM_RISCV)
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die("Machine type is not RISC-V");
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Elf_Phdr *phdrs = data + lenn_to_cpu(ehdr->e_phoff);
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Elf_Phdr *phdrs = data + targetnn_to_cpu(ehdr->e_phoff);
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Elf_Dyn *dyns = NULL;
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for (p = phdrs; p < phdrs + le16_to_cpu(ehdr->e_phnum); ++p) {
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if (le32_to_cpu(p->p_type) == PT_DYNAMIC) {
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dyns = data + lenn_to_cpu(p->p_offset);
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for (p = phdrs; p < phdrs + target16_to_cpu(ehdr->e_phnum); ++p) {
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if (target32_to_cpu(p->p_type) == PT_DYNAMIC) {
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dyns = data + targetnn_to_cpu(p->p_offset);
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break;
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}
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}
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@ -63,14 +66,14 @@ static void prelink_nn(void *data)
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size_t rela_count = 0;
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Elf_Sym *dynsym = NULL;
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for (dyn = dyns;; ++dyn) {
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if (lenn_to_cpu(dyn->d_tag) == DT_NULL)
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if (targetnn_to_cpu(dyn->d_tag) == DT_NULL)
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break;
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else if (lenn_to_cpu(dyn->d_tag) == DT_RELA)
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rela_dyn = get_offset_nn(data, phdrs, le16_to_cpu(ehdr->e_phnum), + lenn_to_cpu(dyn->d_un.d_ptr));
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else if (lenn_to_cpu(dyn->d_tag) == DT_RELASZ)
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rela_count = lenn_to_cpu(dyn->d_un.d_val) / sizeof(Elf_Rela);
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else if (lenn_to_cpu(dyn->d_tag) == DT_SYMTAB)
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dynsym = get_offset_nn(data, phdrs, le16_to_cpu(ehdr->e_phnum), + lenn_to_cpu(dyn->d_un.d_ptr));
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else if (targetnn_to_cpu(dyn->d_tag) == DT_RELA)
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rela_dyn = get_offset_bonn(data, phdrs, target16_to_cpu(ehdr->e_phnum), + targetnn_to_cpu(dyn->d_un.d_ptr));
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else if (targetnn_to_cpu(dyn->d_tag) == DT_RELASZ)
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rela_count = targetnn_to_cpu(dyn->d_un.d_val) / sizeof(Elf_Rela);
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else if (targetnn_to_cpu(dyn->d_tag) == DT_SYMTAB)
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dynsym = get_offset_bonn(data, phdrs, target16_to_cpu(ehdr->e_phnum), + targetnn_to_cpu(dyn->d_un.d_ptr));
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}
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@ -81,23 +84,23 @@ static void prelink_nn(void *data)
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die("No .dynsym found");
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for (r = rela_dyn; r < rela_dyn + rela_count; ++r) {
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void* buf = get_offset_nn(data, phdrs, le16_to_cpu(ehdr->e_phnum), lenn_to_cpu(r->r_offset));
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void* buf = get_offset_bonn(data, phdrs, target16_to_cpu(ehdr->e_phnum), targetnn_to_cpu(r->r_offset));
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if (buf == NULL)
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continue;
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if (ELF_R_TYPE(lenn_to_cpu(r->r_info)) == R_RISCV_RELATIVE)
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if (ELF_R_TYPE(targetnn_to_cpu(r->r_info)) == R_RISCV_RELATIVE)
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*((uintnn_t*) buf) = r->r_addend;
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else if (ELF_R_TYPE(lenn_to_cpu(r->r_info)) == R_RISCV_32)
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*((uint32_t*) buf) = dynsym[ELF_R_SYM(lenn_to_cpu(r->r_info))].st_value;
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else if (ELF_R_TYPE(lenn_to_cpu(r->r_info)) == R_RISCV_64)
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*((uint64_t*) buf) = dynsym[ELF_R_SYM(lenn_to_cpu(r->r_info))].st_value;
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else if (ELF_R_TYPE(targetnn_to_cpu(r->r_info)) == R_RISCV_32)
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*((uint32_t*) buf) = dynsym[ELF_R_SYM(targetnn_to_cpu(r->r_info))].st_value;
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else if (ELF_R_TYPE(targetnn_to_cpu(r->r_info)) == R_RISCV_64)
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*((uint64_t*) buf) = dynsym[ELF_R_SYM(targetnn_to_cpu(r->r_info))].st_value;
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}
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}
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#undef prelink_nn
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#undef prelink_bonn
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#undef uintnn_t
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#undef get_offset_nn
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#undef get_offset_bonn
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#undef Elf_Ehdr
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#undef Elf_Phdr
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#undef Elf_Rela
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@ -106,7 +109,10 @@ static void prelink_nn(void *data)
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#undef Elf_Addr
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#undef ELF_R_TYPE
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#undef ELF_R_SYM
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#undef lenn_to_cpu
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#undef target16_to_cpu
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#undef target32_to_cpu
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#undef target64_to_cpu
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#undef targetnn_to_cpu
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#undef CONCAT_IMPL
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#undef CONCAT
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