PPC port cleaned up, static linking works well now.

[musl] / src / ldso / powerpc / start.s

diff --git a/src/ldso/powerpc/start.s b/src/ldso/powerpc/start.s
new file mode 100644 (file)
index 0000000..d2060e3
--- /dev/null
+++ b/src/ldso/powerpc/start.s
@@ -0,0 +1,23 @@
+# FIXME : does not work, the small data array needs to be relocated.
+# see elfspec_ppc.pdf, page 76-84
+        .global _start
+        .type   _start,@function
+_start:
+        mr      9, 1                  # Save the original stack pointer.
+        clrrwi  1, 1, 4               # Align the stack to 16 bytes.
+        lis     13, _SDA_BASE_@ha      # r13 points to the small data area.
+        addi    13, 13, _SDA_BASE_@l
+        li      0, 0                   # Zero the frame pointer.
+        lwz     3, 0(9)               # and argc...
+        addi    4, 9, 4               # and argv ...
+        mtlr    0                      # Clear the link register.
+        # Go to the musl dynamic linker entry point.
+        bl      __dynlink
+        cmpi    4, 0, 3, 1            # Check for a 1.
+        bne     4, .                   # Stay here
+        mtlr    3                      # Set the link address...
+        li      3, 0
+        blr                             # and go.
+        .end    _start
+        .size   _start, .-_start
+