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-rw-r--r--i386-link.c70
1 files changed, 57 insertions, 13 deletions
diff --git a/i386-link.c b/i386-link.c
index 59d6fa7..5a0511c 100644
--- a/i386-link.c
+++ b/i386-link.c
@@ -21,20 +21,64 @@
#include "tcc.h"
+/* Returns 1 for a code relocation, 0 for a data relocation. For unknown
+ relocations, returns -1. */
+int code_reloc (int reloc_type)
+{
+ switch (reloc_type) {
+ case R_386_16:
+ case R_386_32:
+ case R_386_GOTPC:
+ case R_386_GOTOFF:
+ case R_386_GOT32:
+ case R_386_GOT32X:
+ case R_386_GLOB_DAT:
+ case R_386_COPY:
+ return 0;
+
+ case R_386_PC16:
+ case R_386_PC32:
+ case R_386_PLT32:
+ case R_386_JMP_SLOT:
+ return 1;
+ }
+
+ tcc_error ("Unknown relocation type: %d", reloc_type);
+ return -1;
+}
+
+/* Returns an enumerator to describe wether and when the relocation needs a
+ GOT and/or PLT entry to be created. See tcc.h for a description of the
+ different values. */
+int gotplt_entry_type (int reloc_type)
+{
+ switch (reloc_type) {
+ case R_386_16:
+ case R_386_32:
+ case R_386_GLOB_DAT:
+ case R_386_JMP_SLOT:
+ case R_386_COPY:
+ return NO_GOTPLT_ENTRY;
+
+ case R_386_PC16:
+ case R_386_PC32:
+ return AUTO_GOTPLT_ENTRY;
+
+ case R_386_GOTPC:
+ case R_386_GOTOFF:
+ return BUILD_GOT_ONLY;
+
+ case R_386_GOT32:
+ case R_386_GOT32X:
+ case R_386_PLT32:
+ return ALWAYS_GOTPLT_ENTRY;
+ }
+
+ tcc_error ("Unknown relocation type: %d", reloc_type);
+ return -1;
+}
+
static ElfW_Rel *qrel; /* ptr to next reloc entry reused */
-ST_DATA struct reloc_info relocs_info[R_NUM] = {
- INIT_RELOC_INFO (R_386_32, 0, NO_GOTPLT_ENTRY)
- INIT_RELOC_INFO (R_386_PC32, 1, AUTO_GOTPLT_ENTRY)
- INIT_RELOC_INFO (R_386_PLT32, 1, ALWAYS_GOTPLT_ENTRY)
- INIT_RELOC_INFO (R_386_GLOB_DAT, 0, NO_GOTPLT_ENTRY)
- INIT_RELOC_INFO (R_386_JMP_SLOT, 1, NO_GOTPLT_ENTRY)
- INIT_RELOC_INFO (R_386_GOTPC, 0, BUILD_GOT_ONLY)
- INIT_RELOC_INFO (R_386_GOTOFF, 0, BUILD_GOT_ONLY)
- INIT_RELOC_INFO (R_386_GOT32, 0, ALWAYS_GOTPLT_ENTRY)
- INIT_RELOC_INFO (R_386_GOT32X, 0, ALWAYS_GOTPLT_ENTRY)
- INIT_RELOC_INFO (R_386_16, 0, NO_GOTPLT_ENTRY)
- INIT_RELOC_INFO (R_386_PC16, 1, AUTO_GOTPLT_ENTRY)
-};
void relocate_init(Section *sr)
{