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authorRich Felker <dalias@aerifal.cx>2012-09-29 01:05:31 -0400
committerRich Felker <dalias@aerifal.cx>2012-09-29 01:05:31 -0400
commit8c0a3d9e5c169fc9d0f246ab59362b658b029ad7 (patch)
tree6ac54202768db511e8bb959d85060adb98cbf226 /arch/microblaze/reloc.h
parente0ea44cb764fcdbe8515f22096930bede2c7896f (diff)
downloadmusl-8c0a3d9e5c169fc9d0f246ab59362b658b029ad7.tar.gz
microblaze port
based on initial work by rdp, with heavy modifications. some features including threads are untested because qemu app-level emulation seems to be broken and I do not have a proper system image for testing.
Diffstat (limited to 'arch/microblaze/reloc.h')
-rw-r--r--arch/microblaze/reloc.h41
1 files changed, 41 insertions, 0 deletions
diff --git a/arch/microblaze/reloc.h b/arch/microblaze/reloc.h
new file mode 100644
index 00000000..9f04f125
--- /dev/null
+++ b/arch/microblaze/reloc.h
@@ -0,0 +1,41 @@
+#include <string.h>
+#include <elf.h>
+
+#define ETC_LDSO_PATH "/etc/ld-musl-microblaze.path"
+
+#define IS_COPY(x) ((x)==R_MICROBLAZE_COPY)
+#define IS_PLT(x) ((x)==R_MICROBLAZE_JUMP_SLOT)
+
+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)
+{
+ switch(type) {
+ case R_MICROBLAZE_32:
+ case R_MICROBLAZE_GLOB_DAT:
+ case R_MICROBLAZE_JUMP_SLOT:
+ *reloc_addr = sym_val + addend;
+ break;
+ case R_MICROBLAZE_REL:
+ *reloc_addr = (size_t)base_addr + addend;
+ break;
+ case R_MICROBLAZE_COPY:
+ memcpy(reloc_addr, (void *)sym_val, sym_size);
+ break;
+ }
+}
+
+#include "syscall.h"
+void __reloc_self(int c, size_t *a, size_t *dynv)
+{
+ char dot = '.', ex = 'x';
+ 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<20) t[*a] = a[1];
+ n = t[DT_RELASZ];
+ for (a=(void *)(base+t[DT_RELA]); n; a+=3, n-=12)
+ if (a[1]%256 == R_MICROBLAZE_REL)
+ *(size_t *)(base+a[0]) = (size_t)base + a[2];
+}