Yet another large update to ld.so. In this iteration I finally got

the C based syscalls working, which greatly simplifies what it takes
to get new architectures running.
 -Erik

3 files changed, 432 insertions, 0 deletions

diff --git a/ldso/ldso/sparc/dl-syscalls.h b/ldso/ldso/sparc/dl-syscalls.h
new file mode 100644
index 000000000..c2b7e5527
--- /dev/null
+++ b/ldso/ldso/sparc/dl-syscalls.h
@@ -0,0 +1,144 @@
+#include <linux/types.h>
+#include <asm/unistd.h>
+
+/* Here are the macros which define how this platform makes
+ * system calls.  This particular variant does _not_ set 
+ * errno (note how it is disabled in __syscall_return) since
+ * these will get called before the errno symbol is dynamicly 
+ * linked.
+   by the dynamic linker.  The idea is that we want to be able
+   to call these before the errno symbol is dynamicly linked, so
+   we use our own version here.  Note that we cannot assume any
+   dynamic linking at all, so we cannot return any error codes.
+   We just punt if there is an error. */
+
+
+#define _syscall0(type,name) \
+type name(void) \
+{ \
+long __res; \
+register long __g1 __asm__ ("g1") = __NR_##name; \
+__asm__ __volatile__ ("t 0x10\n\t" \
+		      "bcc 1f\n\t" \
+		      "mov %%o0, %0\n\t" \
+		      "sub %%g0, %%o0, %0\n\t" \
+		      "1:\n\t" \
+		      : "=r" (__res)\
+		      : "r" (__g1) \
+		      : "o0", "cc"); \
+if (__res < -255 || __res >= 0) \
+    return (type) __res; \
+/*errno = -__res; */\
+return -1; \
+}
+
+#define _syscall1(type,name,type1,arg1) \
+type name(type1 arg1) \
+{ \
+long __res; \
+register long __g1 __asm__ ("g1") = __NR_##name; \
+register long __o0 __asm__ ("o0") = (long)(arg1); \
+__asm__ __volatile__ ("t 0x10\n\t" \
+		      "bcc 1f\n\t" \
+		      "mov %%o0, %0\n\t" \
+		      "sub %%g0, %%o0, %0\n\t" \
+		      "1:\n\t" \
+		      : "=r" (__res), "=&r" (__o0) \
+		      : "1" (__o0), "r" (__g1) \
+		      : "cc"); \
+if (__res < -255 || __res >= 0) \
+	return (type) __res; \
+/*errno = -__res;*/ \
+return -1; \
+}
+
+#define _syscall2(type,name,type1,arg1,type2,arg2) \
+type name(type1 arg1,type2 arg2) \
+{ \
+long __res; \
+register long __g1 __asm__ ("g1") = __NR_##name; \
+register long __o0 __asm__ ("o0") = (long)(arg1); \
+register long __o1 __asm__ ("o1") = (long)(arg2); \
+__asm__ __volatile__ ("t 0x10\n\t" \
+		      "bcc 1f\n\t" \
+		      "mov %%o0, %0\n\t" \
+		      "sub %%g0, %%o0, %0\n\t" \
+		      "1:\n\t" \
+		      : "=r" (__res), "=&r" (__o0) \
+		      : "1" (__o0), "r" (__o1), "r" (__g1) \
+		      : "cc"); \
+if (__res < -255 || __res >= 0) \
+	return (type) __res; \
+/*errno = -__res;*/ \
+return -1; \
+}
+
+#define _syscall3(type,name,type1,arg1,type2,arg2,type3,arg3) \
+type name(type1 arg1,type2 arg2,type3 arg3) \
+{ \
+long __res; \
+register long __g1 __asm__ ("g1") = __NR_##name; \
+register long __o0 __asm__ ("o0") = (long)(arg1); \
+register long __o1 __asm__ ("o1") = (long)(arg2); \
+register long __o2 __asm__ ("o2") = (long)(arg3); \
+__asm__ __volatile__ ("t 0x10\n\t" \
+		      "bcc 1f\n\t" \
+		      "mov %%o0, %0\n\t" \
+		      "sub %%g0, %%o0, %0\n\t" \
+		      "1:\n\t" \
+		      : "=r" (__res), "=&r" (__o0) \
+		      : "1" (__o0), "r" (__o1), "r" (__o2), "r" (__g1) \
+		      : "cc"); \
+if (__res < -255 || __res>=0) \
+	return (type) __res; \
+/*errno = -__res;*/ \
+return -1; \
+}
+
+#define _syscall4(type,name,type1,arg1,type2,arg2,type3,arg3,type4,arg4) \
+type name (type1 arg1, type2 arg2, type3 arg3, type4 arg4) \
+{ \
+long __res; \
+register long __g1 __asm__ ("g1") = __NR_##name; \
+register long __o0 __asm__ ("o0") = (long)(arg1); \
+register long __o1 __asm__ ("o1") = (long)(arg2); \
+register long __o2 __asm__ ("o2") = (long)(arg3); \
+register long __o3 __asm__ ("o3") = (long)(arg4); \
+__asm__ __volatile__ ("t 0x10\n\t" \
+		      "bcc 1f\n\t" \
+		      "mov %%o0, %0\n\t" \
+		      "sub %%g0, %%o0, %0\n\t" \
+		      "1:\n\t" \
+		      : "=r" (__res), "=&r" (__o0) \
+		      : "1" (__o0), "r" (__o1), "r" (__o2), "r" (__o3), "r" (__g1) \
+		      : "cc"); \
+if (__res < -255 || __res>=0) \
+	return (type) __res; \
+/*errno = -__res;*/ \
+return -1; \
+} 
+
+#define _syscall5(type,name,type1,arg1,type2,arg2,type3,arg3,type4,arg4, \
+	  type5,arg5) \
+type name (type1 arg1,type2 arg2,type3 arg3,type4 arg4,type5 arg5) \
+{ \
+long __res; \
+register long __g1 __asm__ ("g1") = __NR_##name; \
+register long __o0 __asm__ ("o0") = (long)(arg1); \
+register long __o1 __asm__ ("o1") = (long)(arg2); \
+register long __o2 __asm__ ("o2") = (long)(arg3); \
+register long __o3 __asm__ ("o3") = (long)(arg4); \
+register long __o4 __asm__ ("o4") = (long)(arg5); \
+__asm__ __volatile__ ("t 0x10\n\t" \
+		      "bcc 1f\n\t" \
+		      "mov %%o0, %0\n\t" \
+		      "sub %%g0, %%o0, %0\n\t" \
+		      "1:\n\t" \
+		      : "=r" (__res), "=&r" (__o0) \
+		      : "1" (__o0), "r" (__o1), "r" (__o2), "r" (__o3), "r" (__o4), "r" (__g1) \
+		      : "cc"); \
+if (__res < -255 || __res>=0) \
+	return (type) __res; \
+/*errno = -__res; */\
+return -1; \
+}
diff --git a/ldso/ldso/sparc/ld_syscalls.h b/ldso/ldso/sparc/ld_syscalls.h
new file mode 100644
index 000000000..c2b7e5527
--- /dev/null
+++ b/ldso/ldso/sparc/ld_syscalls.h
@@ -0,0 +1,144 @@
+#include <linux/types.h>
+#include <asm/unistd.h>
+
+/* Here are the macros which define how this platform makes
+ * system calls.  This particular variant does _not_ set 
+ * errno (note how it is disabled in __syscall_return) since
+ * these will get called before the errno symbol is dynamicly 
+ * linked.
+   by the dynamic linker.  The idea is that we want to be able
+   to call these before the errno symbol is dynamicly linked, so
+   we use our own version here.  Note that we cannot assume any
+   dynamic linking at all, so we cannot return any error codes.
+   We just punt if there is an error. */
+
+
+#define _syscall0(type,name) \
+type name(void) \
+{ \
+long __res; \
+register long __g1 __asm__ ("g1") = __NR_##name; \
+__asm__ __volatile__ ("t 0x10\n\t" \
+		      "bcc 1f\n\t" \
+		      "mov %%o0, %0\n\t" \
+		      "sub %%g0, %%o0, %0\n\t" \
+		      "1:\n\t" \
+		      : "=r" (__res)\
+		      : "r" (__g1) \
+		      : "o0", "cc"); \
+if (__res < -255 || __res >= 0) \
+    return (type) __res; \
+/*errno = -__res; */\
+return -1; \
+}
+
+#define _syscall1(type,name,type1,arg1) \
+type name(type1 arg1) \
+{ \
+long __res; \
+register long __g1 __asm__ ("g1") = __NR_##name; \
+register long __o0 __asm__ ("o0") = (long)(arg1); \
+__asm__ __volatile__ ("t 0x10\n\t" \
+		      "bcc 1f\n\t" \
+		      "mov %%o0, %0\n\t" \
+		      "sub %%g0, %%o0, %0\n\t" \
+		      "1:\n\t" \
+		      : "=r" (__res), "=&r" (__o0) \
+		      : "1" (__o0), "r" (__g1) \
+		      : "cc"); \
+if (__res < -255 || __res >= 0) \
+	return (type) __res; \
+/*errno = -__res;*/ \
+return -1; \
+}
+
+#define _syscall2(type,name,type1,arg1,type2,arg2) \
+type name(type1 arg1,type2 arg2) \
+{ \
+long __res; \
+register long __g1 __asm__ ("g1") = __NR_##name; \
+register long __o0 __asm__ ("o0") = (long)(arg1); \
+register long __o1 __asm__ ("o1") = (long)(arg2); \
+__asm__ __volatile__ ("t 0x10\n\t" \
+		      "bcc 1f\n\t" \
+		      "mov %%o0, %0\n\t" \
+		      "sub %%g0, %%o0, %0\n\t" \
+		      "1:\n\t" \
+		      : "=r" (__res), "=&r" (__o0) \
+		      : "1" (__o0), "r" (__o1), "r" (__g1) \
+		      : "cc"); \
+if (__res < -255 || __res >= 0) \
+	return (type) __res; \
+/*errno = -__res;*/ \
+return -1; \
+}
+
+#define _syscall3(type,name,type1,arg1,type2,arg2,type3,arg3) \
+type name(type1 arg1,type2 arg2,type3 arg3) \
+{ \
+long __res; \
+register long __g1 __asm__ ("g1") = __NR_##name; \
+register long __o0 __asm__ ("o0") = (long)(arg1); \
+register long __o1 __asm__ ("o1") = (long)(arg2); \
+register long __o2 __asm__ ("o2") = (long)(arg3); \
+__asm__ __volatile__ ("t 0x10\n\t" \
+		      "bcc 1f\n\t" \
+		      "mov %%o0, %0\n\t" \
+		      "sub %%g0, %%o0, %0\n\t" \
+		      "1:\n\t" \
+		      : "=r" (__res), "=&r" (__o0) \
+		      : "1" (__o0), "r" (__o1), "r" (__o2), "r" (__g1) \
+		      : "cc"); \
+if (__res < -255 || __res>=0) \
+	return (type) __res; \
+/*errno = -__res;*/ \
+return -1; \
+}
+
+#define _syscall4(type,name,type1,arg1,type2,arg2,type3,arg3,type4,arg4) \
+type name (type1 arg1, type2 arg2, type3 arg3, type4 arg4) \
+{ \
+long __res; \
+register long __g1 __asm__ ("g1") = __NR_##name; \
+register long __o0 __asm__ ("o0") = (long)(arg1); \
+register long __o1 __asm__ ("o1") = (long)(arg2); \
+register long __o2 __asm__ ("o2") = (long)(arg3); \
+register long __o3 __asm__ ("o3") = (long)(arg4); \
+__asm__ __volatile__ ("t 0x10\n\t" \
+		      "bcc 1f\n\t" \
+		      "mov %%o0, %0\n\t" \
+		      "sub %%g0, %%o0, %0\n\t" \
+		      "1:\n\t" \
+		      : "=r" (__res), "=&r" (__o0) \
+		      : "1" (__o0), "r" (__o1), "r" (__o2), "r" (__o3), "r" (__g1) \
+		      : "cc"); \
+if (__res < -255 || __res>=0) \
+	return (type) __res; \
+/*errno = -__res;*/ \
+return -1; \
+} 
+
+#define _syscall5(type,name,type1,arg1,type2,arg2,type3,arg3,type4,arg4, \
+	  type5,arg5) \
+type name (type1 arg1,type2 arg2,type3 arg3,type4 arg4,type5 arg5) \
+{ \
+long __res; \
+register long __g1 __asm__ ("g1") = __NR_##name; \
+register long __o0 __asm__ ("o0") = (long)(arg1); \
+register long __o1 __asm__ ("o1") = (long)(arg2); \
+register long __o2 __asm__ ("o2") = (long)(arg3); \
+register long __o3 __asm__ ("o3") = (long)(arg4); \
+register long __o4 __asm__ ("o4") = (long)(arg5); \
+__asm__ __volatile__ ("t 0x10\n\t" \
+		      "bcc 1f\n\t" \
+		      "mov %%o0, %0\n\t" \
+		      "sub %%g0, %%o0, %0\n\t" \
+		      "1:\n\t" \
+		      : "=r" (__res), "=&r" (__o0) \
+		      : "1" (__o0), "r" (__o1), "r" (__o2), "r" (__o3), "r" (__o4), "r" (__g1) \
+		      : "cc"); \
+if (__res < -255 || __res>=0) \
+	return (type) __res; \
+/*errno = -__res; */\
+return -1; \
+}
diff --git a/ldso/ldso/sparc/syscalls.h b/ldso/ldso/sparc/syscalls.h
new file mode 100644
index 000000000..c2b7e5527
--- /dev/null
+++ b/ldso/ldso/sparc/syscalls.h
@@ -0,0 +1,144 @@
+#include <linux/types.h>
+#include <asm/unistd.h>
+
+/* Here are the macros which define how this platform makes
+ * system calls.  This particular variant does _not_ set 
+ * errno (note how it is disabled in __syscall_return) since
+ * these will get called before the errno symbol is dynamicly 
+ * linked.
+   by the dynamic linker.  The idea is that we want to be able
+   to call these before the errno symbol is dynamicly linked, so
+   we use our own version here.  Note that we cannot assume any
+   dynamic linking at all, so we cannot return any error codes.
+   We just punt if there is an error. */
+
+
+#define _syscall0(type,name) \
+type name(void) \
+{ \
+long __res; \
+register long __g1 __asm__ ("g1") = __NR_##name; \
+__asm__ __volatile__ ("t 0x10\n\t" \
+		      "bcc 1f\n\t" \
+		      "mov %%o0, %0\n\t" \
+		      "sub %%g0, %%o0, %0\n\t" \
+		      "1:\n\t" \
+		      : "=r" (__res)\
+		      : "r" (__g1) \
+		      : "o0", "cc"); \
+if (__res < -255 || __res >= 0) \
+    return (type) __res; \
+/*errno = -__res; */\
+return -1; \
+}
+
+#define _syscall1(type,name,type1,arg1) \
+type name(type1 arg1) \
+{ \
+long __res; \
+register long __g1 __asm__ ("g1") = __NR_##name; \
+register long __o0 __asm__ ("o0") = (long)(arg1); \
+__asm__ __volatile__ ("t 0x10\n\t" \
+		      "bcc 1f\n\t" \
+		      "mov %%o0, %0\n\t" \
+		      "sub %%g0, %%o0, %0\n\t" \
+		      "1:\n\t" \
+		      : "=r" (__res), "=&r" (__o0) \
+		      : "1" (__o0), "r" (__g1) \
+		      : "cc"); \
+if (__res < -255 || __res >= 0) \
+	return (type) __res; \
+/*errno = -__res;*/ \
+return -1; \
+}
+
+#define _syscall2(type,name,type1,arg1,type2,arg2) \
+type name(type1 arg1,type2 arg2) \
+{ \
+long __res; \
+register long __g1 __asm__ ("g1") = __NR_##name; \
+register long __o0 __asm__ ("o0") = (long)(arg1); \
+register long __o1 __asm__ ("o1") = (long)(arg2); \
+__asm__ __volatile__ ("t 0x10\n\t" \
+		      "bcc 1f\n\t" \
+		      "mov %%o0, %0\n\t" \
+		      "sub %%g0, %%o0, %0\n\t" \
+		      "1:\n\t" \
+		      : "=r" (__res), "=&r" (__o0) \
+		      : "1" (__o0), "r" (__o1), "r" (__g1) \
+		      : "cc"); \
+if (__res < -255 || __res >= 0) \
+	return (type) __res; \
+/*errno = -__res;*/ \
+return -1; \
+}
+
+#define _syscall3(type,name,type1,arg1,type2,arg2,type3,arg3) \
+type name(type1 arg1,type2 arg2,type3 arg3) \
+{ \
+long __res; \
+register long __g1 __asm__ ("g1") = __NR_##name; \
+register long __o0 __asm__ ("o0") = (long)(arg1); \
+register long __o1 __asm__ ("o1") = (long)(arg2); \
+register long __o2 __asm__ ("o2") = (long)(arg3); \
+__asm__ __volatile__ ("t 0x10\n\t" \
+		      "bcc 1f\n\t" \
+		      "mov %%o0, %0\n\t" \
+		      "sub %%g0, %%o0, %0\n\t" \
+		      "1:\n\t" \
+		      : "=r" (__res), "=&r" (__o0) \
+		      : "1" (__o0), "r" (__o1), "r" (__o2), "r" (__g1) \
+		      : "cc"); \
+if (__res < -255 || __res>=0) \
+	return (type) __res; \
+/*errno = -__res;*/ \
+return -1; \
+}
+
+#define _syscall4(type,name,type1,arg1,type2,arg2,type3,arg3,type4,arg4) \
+type name (type1 arg1, type2 arg2, type3 arg3, type4 arg4) \
+{ \
+long __res; \
+register long __g1 __asm__ ("g1") = __NR_##name; \
+register long __o0 __asm__ ("o0") = (long)(arg1); \
+register long __o1 __asm__ ("o1") = (long)(arg2); \
+register long __o2 __asm__ ("o2") = (long)(arg3); \
+register long __o3 __asm__ ("o3") = (long)(arg4); \
+__asm__ __volatile__ ("t 0x10\n\t" \
+		      "bcc 1f\n\t" \
+		      "mov %%o0, %0\n\t" \
+		      "sub %%g0, %%o0, %0\n\t" \
+		      "1:\n\t" \
+		      : "=r" (__res), "=&r" (__o0) \
+		      : "1" (__o0), "r" (__o1), "r" (__o2), "r" (__o3), "r" (__g1) \
+		      : "cc"); \
+if (__res < -255 || __res>=0) \
+	return (type) __res; \
+/*errno = -__res;*/ \
+return -1; \
+} 
+
+#define _syscall5(type,name,type1,arg1,type2,arg2,type3,arg3,type4,arg4, \
+	  type5,arg5) \
+type name (type1 arg1,type2 arg2,type3 arg3,type4 arg4,type5 arg5) \
+{ \
+long __res; \
+register long __g1 __asm__ ("g1") = __NR_##name; \
+register long __o0 __asm__ ("o0") = (long)(arg1); \
+register long __o1 __asm__ ("o1") = (long)(arg2); \
+register long __o2 __asm__ ("o2") = (long)(arg3); \
+register long __o3 __asm__ ("o3") = (long)(arg4); \
+register long __o4 __asm__ ("o4") = (long)(arg5); \
+__asm__ __volatile__ ("t 0x10\n\t" \
+		      "bcc 1f\n\t" \
+		      "mov %%o0, %0\n\t" \
+		      "sub %%g0, %%o0, %0\n\t" \
+		      "1:\n\t" \
+		      : "=r" (__res), "=&r" (__o0) \
+		      : "1" (__o0), "r" (__o1), "r" (__o2), "r" (__o3), "r" (__o4), "r" (__g1) \
+		      : "cc"); \
+if (__res < -255 || __res>=0) \
+	return (type) __res; \
+/*errno = -__res; */\
+return -1; \
+}