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authorStefan Kristiansson <stefan.kristiansson@saunalahti.fi>2014-07-17 22:09:10 +0300
committerRich Felker <dalias@aerifal.cx>2014-07-18 14:10:23 -0400
commit200d15479c0bc48471ee7b8e538ce33af990f82e (patch)
tree864cc38895b9277384ed3a956f4ad324de2c4455 /arch/or1k/reloc.h
parent7bece9c2095ee81f14b1088f6b0ba2f37fecb283 (diff)
downloadmusl-200d15479c0bc48471ee7b8e538ce33af990f82e.tar.gz
add or1k (OpenRISC 1000) architecture port
With the exception of a fenv implementation, the port is fully featured. The port has been tested in or1ksim, the golden reference functional simulator for OpenRISC 1000. It passes all libc-test tests (except the math tests that requires a fenv implementation). The port assumes an or1k implementation that has support for atomic instructions (l.lwa/l.swa). Although it passes all the libc-test tests, the port is still in an experimental state, and has yet experienced very little 'real-world' use.
Diffstat (limited to 'arch/or1k/reloc.h')
-rw-r--r--arch/or1k/reloc.h47
1 files changed, 47 insertions, 0 deletions
diff --git a/arch/or1k/reloc.h b/arch/or1k/reloc.h
new file mode 100644
index 00000000..830a800a
--- /dev/null
+++ b/arch/or1k/reloc.h
@@ -0,0 +1,47 @@
+#include <string.h>
+#include <elf.h>
+#include <endian.h>
+
+#define LDSO_ARCH "or1k"
+
+#define TPOFF_K 0
+
+static int remap_rel(int type)
+{
+ switch(type) {
+ case R_OR1K_32:
+ return REL_SYMBOLIC;
+ case R_OR1K_GLOB_DAT:
+ return REL_GOT;
+ case R_OR1K_JMP_SLOT:
+ return REL_PLT;
+ case R_OR1K_RELATIVE:
+ return REL_RELATIVE;
+ case R_OR1K_COPY:
+ return REL_COPY;
+ case R_OR1K_TLS_DTPMOD:
+ return REL_DTPMOD;
+ case R_OR1K_TLS_DTPOFF:
+ return REL_DTPOFF;
+ case R_OR1K_TLS_TPOFF:
+ return REL_TPOFF;
+ }
+ return 0;
+}
+
+#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] & -t[AT_PAGESZ]);
+ 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_OR1K_RELATIVE)
+ *(size_t *)(base+a[0]) = (size_t)base + a[2];
+}