First version

git-svn-id: svn://svn.rockbox.org/rockbox/trunk@175 a1c6a512-1295-4272-9138-f99709370657

1 files changed, 49 insertions, 0 deletions

diff --git a/firmware/test/kernel/crt0.S b/firmware/test/kernel/crt0.S
new file mode 100644
index 0000000000..5f0ef2d64e
--- /dev/null
+++ b/firmware/test/kernel/crt0.S
@@ -0,0 +1,49 @@
+        .section .text
+        .global start
+start:
+        mov.l   stack_k,r15
+
+        ! zero out bss
+        mov.l   edata_k,r0
+        mov.l   end_k,r1
+        mov     #0,r2
+start_l:
+         mov.l  r2,@r0
+        add     #4,r0
+        cmp/ge  r0,r1
+        bt      start_l
+        nop
+
+#if defined (__SH3E__) || defined(__SH4_SINGLE__) || defined(__SH4__) || defined(__SH4_SINGLE_ONLY)
+        mov.l set_fpscr_k, r1
+        jsr @r1
+        mov #0,r4
+        lds r3,fpscr
+#endif /*  defined (__SH3E__) || defined(__SH4_SINGLE__) || defined(__SH4__) || defined(__SH4_SINGLE_ONLY__) */
+
+        ! call the mainline     
+        mov.l   main_k,r0
+        jsr     @r0
+        nop
+.hoo:
+    bra .hoo
+
+        .align 2
+#if defined (__SH3E__) || defined(__SH4_SINGLE__) || defined(__SH4__) || defined(__SH4_SINGLE_ONLY__)
+set_fpscr_k:
+        .long   ___set_fpscr
+#endif /*  defined (__SH3E__) || defined(__SH4_SINGLE__) || defined(__SH4__) || defined(SH4_SINGLE_ONLY) */
+stack_k:
+        .long   _stack  
+edata_k:
+        .long   _edata
+end_k:
+        .long   _end
+main_k:
+        .long   _main
+
+#ifdef __ELF__
+        .section .stack,"aw"
+#else
+        .section .stack
+#endif