Module: libav
Branch: master
Commit: 7b7760ad6efb7b96122aa7133ad21e22653ae222
Author: Martin Storsjö <mar...@martin.st>
Committer: Martin Storsjö <mar...@martin.st>
Date: Sun Jul 9 23:52:10 2017 +0300
aarch64: Fix negative movrel offsets for windows
On windows, the offset for the relocation doesn't get stored in
the relocation itself, but as an unsigned immediate in the opcode.
Therefore, negative offsets has to be handled via a separate sub
instruction, just as on MachO.
Signed-off-by: Martin Storsjö <mar...@martin.st>
---
libavutil/aarch64/asm.S | 9 +++++++++
1 file changed, 9 insertions(+)
diff --git a/libavutil/aarch64/asm.S b/libavutil/aarch64/asm.S
index 86d36cd..7e2af4d 100644
--- a/libavutil/aarch64/asm.S
+++ b/libavutil/aarch64/asm.S
@@ -82,6 +82,15 @@ ELF .size \name, . - \name
adrp \rd, \val+(\offset)@PAGE
add \rd, \rd, \val+(\offset)@PAGEOFF
.endif
+#elif CONFIG_PIC && defined(_WIN32)
+ .if \offset < 0
+ adrp \rd, \val
+ add \rd, \rd, :lo12:\val
+ sub \rd, \rd, -(\offset)
+ .else
+ adrp \rd, \val+(\offset)
+ add \rd, \rd, :lo12:\val+(\offset)
+ .endif
#elif CONFIG_PIC
adrp \rd, \val+(\offset)
add \rd, \rd, :lo12:\val+(\offset)
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