From fca32c746eb922c56e6d4123f6731073561e4c79 Mon Sep 17 00:00:00 2001
From: Doug Rabson <dfr@FreeBSD.org>
Date: Wed, 4 Aug 2004 19:12:14 +0000
Subject: [PATCH] Add stubs for powerpc TLS.

Submitted by: ssouhlal
---
 libexec/rtld-elf/powerpc/reloc.c        | 26 +++++++++++++++++++++++++
 libexec/rtld-elf/powerpc/rtld_machdep.h | 15 ++++++++++++++
 libexec/rtld-elf/rtld.c                 |  7 ++-----
 3 files changed, 43 insertions(+), 5 deletions(-)

diff --git a/libexec/rtld-elf/powerpc/reloc.c b/libexec/rtld-elf/powerpc/reloc.c
index 9894033e459a..1f9f05a1ba0e 100644
--- a/libexec/rtld-elf/powerpc/reloc.c
+++ b/libexec/rtld-elf/powerpc/reloc.c
@@ -489,3 +489,29 @@ init_pltgot(Obj_Entry *obj)
 	 */
 	__syncicache(pltcall, 72 + N * 8);
 }
+
+void
+allocate_initial_tls(Obj_Entry *list)
+{
+	register Elf_Addr **tp __asm__("r2");
+
+	/*
+	* Fix the size of the static TLS block by using the maximum
+	* offset allocated so far and adding a bit for dynamic modules to
+	* use.
+	*/
+
+	tls_static_space = tls_last_offset + tls_last_size + RTLD_STATIC_TLS_EXTRA;
+
+	tp = (Elf_Addr **) ((char *) allocate_tls(list, 0, 8, 8) + 0x7008);
+}
+
+void*
+__tls_get_addr(tls_index* ti)
+{
+	register Elf_Addr **tp __asm__("r2");
+	char *p;
+
+	p = tls_get_addr_common(tp, ti->ti_module, ti->ti_offset);
+	return p + 0x8000;
+}
diff --git a/libexec/rtld-elf/powerpc/rtld_machdep.h b/libexec/rtld-elf/powerpc/rtld_machdep.h
index 77495d76b41d..534882b1cedb 100644
--- a/libexec/rtld-elf/powerpc/rtld_machdep.h
+++ b/libexec/rtld-elf/powerpc/rtld_machdep.h
@@ -62,4 +62,19 @@ void _rtld_bind_start(void);
 void _rtld_powerpc_pltresolve(void);
 void _rtld_powerpc_pltcall(void);
 
+#define round(size, align) \
+    (((size) + (align) - 1) & ~((align) - 1))
+#define calculate_first_tls_offset(size, align) \
+    round(8, align)
+#define calculate_tls_offset(prev_offset, prev_size, size, align) \
+    round(prev_offset + prev_size, align)
+#define calculate_tls_end(off, size)    ((off) + (size))
+ 
+typedef struct {
+	unsigned long ti_module;
+	unsigned long ti_offset;
+} tls_index;
+
+extern void *__tls_get_addr(tls_index* ti);
+
 #endif
diff --git a/libexec/rtld-elf/rtld.c b/libexec/rtld-elf/rtld.c
index 97ddf578147b..3891f174236b 100644
--- a/libexec/rtld-elf/rtld.c
+++ b/libexec/rtld-elf/rtld.c
@@ -2508,9 +2508,9 @@ tls_get_addr_common(Elf_Addr** dtvp, int index, size_t offset)
     return (void*) (dtv[index + 1] + offset);
 }
 
-/* XXX not sure what variants to use for arm and powerpc. */
+/* XXX not sure what variants to use for arm. */
 
-#if defined(__ia64__) || defined(__alpha__)
+#if defined(__ia64__) || defined(__alpha__) || defined(__powerpc__)
 
 /*
  * Allocate Static TLS using the Variant I method.
@@ -2525,9 +2525,6 @@ allocate_tls(Obj_Entry *objs, void *oldtls, size_t tcbsize, size_t tcbalign)
     Elf_Addr addr;
     int i;
 
-    assert(tcbsize == 16);
-    assert(tcbalign == 16);
-
     size = tls_static_space;
 
     tls = malloc(size);