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Diffstat (limited to 'arch/mips/reloc.h')
-rw-r--r--arch/mips/reloc.h56
1 files changed, 53 insertions, 3 deletions
diff --git a/arch/mips/reloc.h b/arch/mips/reloc.h
index 76df112a..853c8b85 100644
--- a/arch/mips/reloc.h
+++ b/arch/mips/reloc.h
@@ -4,7 +4,7 @@
#define ETC_LDSO_PATH "/etc/ld-musl-mips.path"
#define IS_COPY(x) ((x)==R_MIPS_COPY)
-#define IS_PLT(x) ((x)==R_MIPS_JUMP_SLOT)
+#define IS_PLT(x) 1
static inline void do_single_reloc(size_t *reloc_addr, int type, size_t sym_val, size_t sym_size, unsigned char *base_addr, size_t addend)
{
@@ -13,11 +13,61 @@ static inline void do_single_reloc(size_t *reloc_addr, int type, size_t sym_val,
*reloc_addr = sym_val;
break;
case R_MIPS_REL32:
- // FIXME: how do symbolic relocs come in here ?
- *reloc_addr += (size_t)base_addr;
+ if (sym_val) *reloc_addr += sym_val;
+ else *reloc_addr += (size_t)base_addr;
break;
case R_MIPS_COPY:
memcpy(reloc_addr, (void *)sym_val, sym_size);
break;
}
}
+
+void __reloc_self(int c, size_t *a, size_t *dynv, size_t *got)
+{
+ char *base;
+ size_t t[20], n;
+ for (a+=c+1; *a; a++);
+ for (a++; *a; a+=2) if (*a<20) t[*a] = a[1];
+ base = (char *)t[AT_BASE];
+ if (!base) base = (char *)(t[AT_PHDR] & -4096);
+ for (a=dynv; *a; a+=2) if (*a-0x70000000UL<20) t[*a&31] = a[1];
+ n = t[DT_MIPS_LOCAL_GOTNO - 0x70000000];
+ for (a=got; n; a++, n--) *a += (size_t)base;
+}
+
+static void do_relocs(unsigned char *base, size_t *rel, size_t rel_size, size_t stride, Sym *syms, char *strings, struct dso *dso);
+
+static void do_arch_relocs(struct dso *this, struct dso *head)
+{
+ unsigned char *base = this->base;
+ size_t *dynv = this->dynv;
+ size_t dyn[20] = {0};
+ size_t i;
+ size_t rel[2], got=0;
+ Sym *sym;
+
+ for (i=0; dynv[i]; i+=2) {
+ if (dynv[i]-0x70000000UL<20)
+ dyn[dynv[i]&31] = dynv[i+1];
+ else if (dynv[i] == DT_PLTGOT)
+ got = dynv[i+1];
+ }
+ i = dyn[DT_MIPS_LOCAL_GOTNO-0x70000000];
+ if (this->shortname && !strcmp(this->shortname, "libc.so")) {
+ got += sizeof(size_t) * i;
+ } else {
+ for (; i; i--, got+=sizeof(size_t))
+ *(size_t *)(base+got) += (size_t)base;
+ }
+ sym = this->syms + dyn[DT_MIPS_GOTSYM-0x70000000];
+ i = dyn[DT_MIPS_SYMTABNO-0x70000000] - dyn[DT_MIPS_GOTSYM-0x70000000];
+ for (; i; i--, got+=sizeof(size_t), sym++) {
+ rel[0] = got;
+ rel[1] = sym-this->syms << 8 | R_MIPS_JUMP_SLOT;
+ *(size_t *)(base+got) = 0;
+ do_relocs(base, rel, sizeof rel, 2, this->syms, this->strings, head);
+ }
+}
+
+#define NEED_ARCH_RELOCS 1
+#define DYNAMIC_IS_RO 1