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By changing code16gcc.h from a C header to an assembly header and use the -Wa,... option to gcc to force it to be added to the assembly input, we can avoid the problems with gcc reordering code bits on us. If we have -m16, we still use it, of course. Suggested-by: Kevin O'Connor <kevin@koconnor.net> Signed-off-by: H. Peter Anvin <hpa@linux.intel.com> Link: http://lkml.kernel.org/n/tip-xw8ibgdemucl9fz3i1bymu6w@git.kernel.org
12 lines
277 B
C
12 lines
277 B
C
#
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# code16gcc.h
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#
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# This file is added to the assembler via -Wa when compiling 16-bit C code.
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# This is done this way instead via asm() to make sure gcc does not reorder
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# things around us.
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#
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# gcc 4.9+ has a real -m16 option so we can drop this hack long term.
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#
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.code16gcc
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