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-rw-r--r--coroutine/ppc64le/Context.S72
1 files changed, 72 insertions, 0 deletions
diff --git a/coroutine/ppc64le/Context.S b/coroutine/ppc64le/Context.S
new file mode 100644
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+++ b/coroutine/ppc64le/Context.S
@@ -0,0 +1,72 @@
+.text
+.align 2
+
+.globl coroutine_transfer
+.type coroutine_transfer, @function
+coroutine_transfer:
+ # Make space on the stack for caller registers
+ addi 1,1,-152
+
+ # Save caller registers
+ std 14,0(1)
+ std 15,8(1)
+ std 16,16(1)
+ std 17,24(1)
+ std 18,32(1)
+ std 19,40(1)
+ std 20,48(1)
+ std 21,56(1)
+ std 22,64(1)
+ std 23,72(1)
+ std 24,80(1)
+ std 25,88(1)
+ std 26,96(1)
+ std 27,104(1)
+ std 28,112(1)
+ std 29,120(1)
+ std 30,128(1)
+ std 31,136(1)
+
+ # Save return address
+ mflr 0
+ std 0,144(1)
+
+ # Save stack pointer to first argument
+ std 1,0(3)
+
+ # Load stack pointer from second argument
+ ld 1,0(4)
+
+ # Restore caller registers
+ ld 14,0(1)
+ ld 15,8(1)
+ ld 16,16(1)
+ ld 17,24(1)
+ ld 18,32(1)
+ ld 19,40(1)
+ ld 20,48(1)
+ ld 21,56(1)
+ ld 22,64(1)
+ ld 23,72(1)
+ ld 24,80(1)
+ ld 25,88(1)
+ ld 26,96(1)
+ ld 27,104(1)
+ ld 28,112(1)
+ ld 29,120(1)
+ ld 30,128(1)
+ ld 31,136(1)
+
+ # Load return address
+ ld 0,144(1)
+ mtlr 0
+
+ # Pop stack frame
+ addi 1,1,152
+
+ # Jump to return address
+ blr
+
+#if defined(__linux__) && defined(__ELF__)
+.section .note.GNU-stack,"",%progbits
+#endif