aboutsummaryrefslogtreecommitdiff
path: root/modutils
diff options
context:
space:
mode:
authorGravatar Mike Frysinger <vapier@gentoo.org>2006-01-04 00:11:26 +0000
committerGravatar Mike Frysinger <vapier@gentoo.org>2006-01-04 00:11:26 +0000
commitf982d86ba717d72d66a10327c315cea9dc204639 (patch)
tree95efdfd923c6fccf4e4e3a1d20e7efe812a1e82f /modutils
parent29ed59ee1105449e2e0b39824d122b265ee067dd (diff)
downloadbusybox-f982d86ba717d72d66a10327c315cea9dc204639.tar.gz
busybox-f982d86ba717d72d66a10327c315cea9dc204639.tar.bz2
import nios2 support from microtronix
Diffstat (limited to 'modutils')
-rw-r--r--modutils/insmod.c171
1 files changed, 171 insertions, 0 deletions
diff --git a/modutils/insmod.c b/modutils/insmod.c
index 0ca39911c..79bdebd2c 100644
--- a/modutils/insmod.c
+++ b/modutils/insmod.c
@@ -217,6 +217,14 @@ extern int insmod_ng_main( int argc, char **argv);
#define ARCHDATAM "__dbe_table"
#endif
+/* Nios II */
+#if defined(__nios2__)
+#define MATCH_MACHINE(x) (x == EM_ALTERA_NIOS2)
+#define SHT_RELM SHT_RELA
+#define Elf32_RelM Elf32_Rela
+#define ELFCLASSM ELFCLASS32
+#endif
+
/* PowerPC */
#if defined(__powerpc64__)
#define MATCH_MACHINE(x) (x == EM_PPC64)
@@ -1126,6 +1134,167 @@ arch_apply_relocation(struct obj_file *f,
break;
}
+#elif defined(__nios2__)
+
+ case R_NIOS2_NONE:
+ break;
+
+ case R_NIOS2_BFD_RELOC_32:
+ *loc += v;
+ break;
+
+ case R_NIOS2_BFD_RELOC_16:
+ if (v > 0xffff) {
+ ret = obj_reloc_overflow;
+ }
+ *(short *)loc = v;
+ break;
+
+ case R_NIOS2_BFD_RELOC_8:
+ if (v > 0xff) {
+ ret = obj_reloc_overflow;
+ }
+ *(char *)loc = v;
+ break;
+
+ case R_NIOS2_S16:
+ {
+ Elf32_Addr word;
+
+ if ((Elf32_Sword)v > 0x7fff ||
+ (Elf32_Sword)v < -(Elf32_Sword)0x8000) {
+ ret = obj_reloc_overflow;
+ }
+
+ word = *loc;
+ *loc = ((((word >> 22) << 16) | (v & 0xffff)) << 6) |
+ (word & 0x3f);
+ }
+ break;
+
+ case R_NIOS2_U16:
+ {
+ Elf32_Addr word;
+
+ if (v > 0xffff) {
+ ret = obj_reloc_overflow;
+ }
+
+ word = *loc;
+ *loc = ((((word >> 22) << 16) | (v & 0xffff)) << 6) |
+ (word & 0x3f);
+ }
+ break;
+
+ case R_NIOS2_PCREL16:
+ {
+ Elf32_Addr word;
+
+ v -= dot + 4;
+ if ((Elf32_Sword)v > 0x7fff ||
+ (Elf32_Sword)v < -(Elf32_Sword)0x8000) {
+ ret = obj_reloc_overflow;
+ }
+
+ word = *loc;
+ *loc = ((((word >> 22) << 16) | (v & 0xffff)) << 6) | (word & 0x3f);
+ }
+ break;
+
+ case R_NIOS2_GPREL:
+ {
+ Elf32_Addr word, gp;
+ /* get _gp */
+ gp = obj_symbol_final_value(f, obj_find_symbol(f, SPFX "_gp"));
+ v-=gp;
+ if ((Elf32_Sword)v > 0x7fff ||
+ (Elf32_Sword)v < -(Elf32_Sword)0x8000) {
+ ret = obj_reloc_overflow;
+ }
+
+ word = *loc;
+ *loc = ((((word >> 22) << 16) | (v & 0xffff)) << 6) | (word & 0x3f);
+ }
+ break;
+
+ case R_NIOS2_CALL26:
+ if (v & 3)
+ ret = obj_reloc_dangerous;
+ if ((v >> 28) != (dot >> 28))
+ ret = obj_reloc_overflow;
+ *loc = (*loc & 0x3f) | ((v >> 2) << 6);
+ break;
+
+ case R_NIOS2_IMM5:
+ {
+ Elf32_Addr word;
+
+ if (v > 0x1f) {
+ ret = obj_reloc_overflow;
+ }
+
+ word = *loc & ~0x7c0;
+ *loc = word | ((v & 0x1f) << 6);
+ }
+ break;
+
+ case R_NIOS2_IMM6:
+ {
+ Elf32_Addr word;
+
+ if (v > 0x3f) {
+ ret = obj_reloc_overflow;
+ }
+
+ word = *loc & ~0xfc0;
+ *loc = word | ((v & 0x3f) << 6);
+ }
+ break;
+
+ case R_NIOS2_IMM8:
+ {
+ Elf32_Addr word;
+
+ if (v > 0xff) {
+ ret = obj_reloc_overflow;
+ }
+
+ word = *loc & ~0x3fc0;
+ *loc = word | ((v & 0xff) << 6);
+ }
+ break;
+
+ case R_NIOS2_HI16:
+ {
+ Elf32_Addr word;
+
+ word = *loc;
+ *loc = ((((word >> 22) << 16) | ((v >>16) & 0xffff)) << 6) |
+ (word & 0x3f);
+ }
+ break;
+
+ case R_NIOS2_LO16:
+ {
+ Elf32_Addr word;
+
+ word = *loc;
+ *loc = ((((word >> 22) << 16) | (v & 0xffff)) << 6) |
+ (word & 0x3f);
+ }
+ break;
+
+ case R_NIOS2_HIADJ16:
+ {
+ Elf32_Addr word1, word2;
+
+ word1 = *loc;
+ word2 = ((v >> 16) + ((v >> 15) & 1)) & 0xffff;
+ *loc = ((((word1 >> 22) << 16) | word2) << 6) |
+ (word1 & 0x3f);
+ }
+ break;
+
#elif defined(__powerpc__)
case R_PPC_ADDR16_HA:
@@ -1409,6 +1578,8 @@ arch_apply_relocation(struct obj_file *f,
break;
# endif
+#else
+# warning "no idea how to handle relocations on your arch"
#endif
default: