path: root/arch/or1k/pthread_arch.h
diff options
authorStefan Kristiansson <>2014-07-17 22:09:10 +0300
committerRich Felker <>2014-07-18 14:10:23 -0400
commit200d15479c0bc48471ee7b8e538ce33af990f82e (patch)
tree864cc38895b9277384ed3a956f4ad324de2c4455 /arch/or1k/pthread_arch.h
parent7bece9c2095ee81f14b1088f6b0ba2f37fecb283 (diff)
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/pthread_arch.h')
1 files changed, 17 insertions, 0 deletions
diff --git a/arch/or1k/pthread_arch.h b/arch/or1k/pthread_arch.h
new file mode 100644
index 00000000..e826997e
--- /dev/null
+++ b/arch/or1k/pthread_arch.h
@@ -0,0 +1,17 @@
+/* or1k use variant I, but with the twist that tp points to the end of TCB */
+static inline struct pthread *__pthread_self()
+#ifdef __clang__
+ char *tp;
+ __asm__ __volatile__ ("l.ori %0, r10, 0" : "=r" (tp) );
+ register char *tp __asm__("r10");
+ return (struct pthread *) (tp - sizeof(struct pthread));
+#define TLS_ABOVE_TP
+#define TP_ADJ(p) ((char *)(p) + sizeof(struct pthread))
+/* word-offset to 'pc' in mcontext_t */
+#define CANCEL_REG_IP 32