import vanilla x86_64 code as x32

1 files changed, 46 insertions, 0 deletions

diff --git a/arch/x32/reloc.h b/arch/x32/reloc.h
new file mode 100644
index 00000000..28cf7cc1
--- /dev/null
+++ b/arch/x32/reloc.h
@@ -0,0 +1,46 @@
+#include <stdint.h>
+#include <string.h>
+#include <elf.h>
+
+#define LDSO_ARCH "x86_64"
+
+#define IS_COPY(x) ((x)==R_X86_64_COPY)
+#define IS_PLT(x) ((x)==R_X86_64_JUMP_SLOT)
+
+static inline void do_single_reloc(
+	struct dso *self, unsigned char *base_addr,
+	size_t *reloc_addr, int type, size_t addend,
+	Sym *sym, size_t sym_size,
+	struct symdef def, size_t sym_val)
+{
+	switch(type) {
+	case R_X86_64_GLOB_DAT:
+	case R_X86_64_JUMP_SLOT:
+	case R_X86_64_64:
+		*reloc_addr = sym_val + addend;
+		break;
+	case R_X86_64_32:
+		*(uint32_t *)reloc_addr = sym_val + addend;
+		break;
+	case R_X86_64_PC32:
+		*reloc_addr = sym_val + addend - (size_t)reloc_addr + (size_t)base_addr;
+		break;
+	case R_X86_64_RELATIVE:
+		*reloc_addr = (size_t)base_addr + addend;
+		break;
+	case R_X86_64_COPY:
+		memcpy(reloc_addr, (void *)sym_val, sym_size);
+		break;
+	case R_X86_64_DTPMOD64:
+		*reloc_addr = def.dso ? def.dso->tls_id : self->tls_id;
+		break;
+	case R_X86_64_DTPOFF64:
+		*reloc_addr = def.sym->st_value + addend;
+		break;
+	case R_X86_64_TPOFF64:
+		*reloc_addr = (def.sym
+			? def.sym->st_value - def.dso->tls_offset
+			: 0 - self->tls_offset) + addend;
+		break;
+	}
+}