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aarch64: Fix negative movrel offsets for windows

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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 <martin@martin.st>
This commit is contained in:
Martin Storsjö 2017-07-09 23:52:10 +03:00
parent 0c99b900d8
commit 7b7760ad6e
1 changed files with 9 additions and 0 deletions
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9
libavutil/aarch64/asm.S
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@ -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)