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authorRichard Pennington <rich@pennware.com>2012-11-09 23:32:57 +0100
committerrofl0r <retnyg@gmx.net>2012-11-13 18:15:10 +0100
commit7669d1e334e6b96455eece78da43bf830b93d697 (patch)
tree6649acfaa61ec6780498b55fa8015ca4f7a6cdae /crt
parent1e717ea3d2a864e00e507f1a70a892c551955f1b (diff)
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import preliminary ppc work by rdp.
Diffstat (limited to 'crt')
-rw-r--r--crt/ppc/crt1.S27
1 files changed, 27 insertions, 0 deletions
diff --git a/crt/ppc/crt1.S b/crt/ppc/crt1.S
new file mode 100644
index 00000000..abf64077
--- /dev/null
+++ b/crt/ppc/crt1.S
@@ -0,0 +1,27 @@
+#include <bits/asm.h>
+        .weak  _init
+        .weak  _fini
+        .global _start
+        .type   _start, %function
+_start:
+        mr      r9, r1                  // Save the original stack pointer.
+        clrrwi  r1, r1, 4               // Align the stack to 16 bytes.
+        lis     r13, _SDA_BASE_@ha      // r13 points to the small data area.
+        addi    r13, r13, _SDA_BASE_@l  //
+        li      r0, 0                   // Zero the frame pointer.
+        stwu    r1, -16(r1)             // The initial stack frame.
+        mtlr    r0                      // Clear the link register.
+        stw     r0, 0(r1)               // And save it.
+        lis     r3, main@ha             // Get main() ...
+        addi    r3, r3, main@l
+        lwz     r4, 0(r9)               // and argc...
+        addi    r5, r9, 4               // and argv ...
+        lis     r6, _init@ha            // and _init() ...
+        addi    r6, r6, _init@l
+        lis     r7, _fini@ha            // and _fini() ...
+        addi    r7, r7, _fini@l
+        li      r8, 0                   // ldso_fini == NULL
+        bl       __libc_start_main      // Let's go!
+        b       .                       // Never gets here.
+        .end    _start
+        .size   _start, .-_start