mirror of git://git.musl-libc.org/musl
59 lines
1.4 KiB
C
59 lines
1.4 KiB
C
#include <string.h>
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#include <elf.h>
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#include <endian.h>
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#if __BYTE_ORDER == __LITTLE_ENDIAN
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#define ENDIAN_SUFFIX "el"
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#else
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#define ENDIAN_SUFFIX ""
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#endif
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#define LDSO_ARCH "microblaze" ENDIAN_SUFFIX
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#define IS_COPY(x) ((x)==R_MICROBLAZE_COPY)
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#define IS_PLT(x) ((x)==R_MICROBLAZE_JUMP_SLOT)
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static inline void do_single_reloc(
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struct dso *self, unsigned char *base_addr,
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size_t *reloc_addr, int type, size_t addend,
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Sym *sym, size_t sym_size,
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struct symdef def, size_t sym_val)
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{
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switch(type) {
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case R_MICROBLAZE_32:
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case R_MICROBLAZE_GLOB_DAT:
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case R_MICROBLAZE_JUMP_SLOT:
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*reloc_addr = sym_val + addend;
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break;
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case R_MICROBLAZE_REL:
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*reloc_addr = (size_t)base_addr + addend;
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break;
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case R_MICROBLAZE_COPY:
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memcpy(reloc_addr, (void *)sym_val, sym_size);
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break;
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case R_MICROBLAZE_TLSDTPMOD32:
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*reloc_addr = def.dso ? def.dso->tls_id : self->tls_id;
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break;
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case R_MICROBLAZE_TLSDTPREL32:
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*reloc_addr = def.sym->st_value + addend;
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break;
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}
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}
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#include "syscall.h"
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void __reloc_self(int c, size_t *a, size_t *dynv)
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{
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char dot = '.', ex = 'x';
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char *base;
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size_t t[20], n;
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for (a+=c+1; *a; a++);
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for (a++; *a; a+=2) if (*a<20) t[*a] = a[1];
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base = (char *)t[AT_BASE];
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if (!base) base = (char *)(t[AT_PHDR] & -4096);
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for (a=dynv; *a; a+=2) if (*a<20) t[*a] = a[1];
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n = t[DT_RELASZ];
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for (a=(void *)(base+t[DT_RELA]); n; a+=3, n-=12)
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if (a[1]%256 == R_MICROBLAZE_REL)
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*(size_t *)(base+a[0]) = (size_t)base + a[2];
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}
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