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https://github.com/AuxXxilium/linux_dsm_epyc7002.git
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bd6be579a7
Functions in math-emu are annotated as ENTRY() symbols, but their
ends are not annotated at all. But these are standard functions
called from C, with proper stack register update etc.
Omitting the ends means:
* the annotations are not paired and we cannot deal with such functions
e.g. in objtool
* the symbols are not marked as functions in the object file
* there are no sizes of the functions in the object file
So fix this by adding ENDPROC() to each such case in math-emu.
Signed-off-by: Jiri Slaby <jslaby@suse.cz>
Cc: Andy Lutomirski <luto@kernel.org>
Cc: Borislav Petkov <bp@alien8.de>
Cc: Brian Gerst <brgerst@gmail.com>
Cc: Denys Vlasenko <dvlasenk@redhat.com>
Cc: H. Peter Anvin <hpa@zytor.com>
Cc: Josh Poimboeuf <jpoimboe@redhat.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Link: http://lkml.kernel.org/r/20170824080624.7768-1-jslaby@suse.cz
Signed-off-by: Ingo Molnar <mingo@kernel.org>
89 lines
2.4 KiB
ArmAsm
89 lines
2.4 KiB
ArmAsm
.file "shr_Xsig.S"
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/*---------------------------------------------------------------------------+
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| shr_Xsig.S |
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| 12 byte right shift function |
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| Copyright (C) 1992,1994,1995 |
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| W. Metzenthen, 22 Parker St, Ormond, Vic 3163, |
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| Australia. E-mail billm@jacobi.maths.monash.edu.au |
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| Call from C as: |
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| void shr_Xsig(Xsig *arg, unsigned nr) |
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| Extended shift right function. |
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| Fastest for small shifts. |
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| Shifts the 12 byte quantity pointed to by the first arg (arg) |
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| right by the number of bits specified by the second arg (nr). |
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+---------------------------------------------------------------------------*/
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#include "fpu_emu.h"
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.text
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ENTRY(shr_Xsig)
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push %ebp
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movl %esp,%ebp
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pushl %esi
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movl PARAM2,%ecx
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movl PARAM1,%esi
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cmpl $32,%ecx /* shrd only works for 0..31 bits */
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jnc L_more_than_31
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/* less than 32 bits */
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pushl %ebx
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movl (%esi),%eax /* lsl */
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movl 4(%esi),%ebx /* midl */
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movl 8(%esi),%edx /* msl */
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shrd %cl,%ebx,%eax
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shrd %cl,%edx,%ebx
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shr %cl,%edx
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movl %eax,(%esi)
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movl %ebx,4(%esi)
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movl %edx,8(%esi)
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popl %ebx
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popl %esi
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leave
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ret
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L_more_than_31:
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cmpl $64,%ecx
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jnc L_more_than_63
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subb $32,%cl
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movl 4(%esi),%eax /* midl */
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movl 8(%esi),%edx /* msl */
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shrd %cl,%edx,%eax
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shr %cl,%edx
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movl %eax,(%esi)
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movl %edx,4(%esi)
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movl $0,8(%esi)
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popl %esi
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leave
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ret
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L_more_than_63:
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cmpl $96,%ecx
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jnc L_more_than_95
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subb $64,%cl
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movl 8(%esi),%eax /* msl */
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shr %cl,%eax
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xorl %edx,%edx
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movl %eax,(%esi)
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movl %edx,4(%esi)
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movl %edx,8(%esi)
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popl %esi
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leave
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ret
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L_more_than_95:
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xorl %eax,%eax
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movl %eax,(%esi)
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movl %eax,4(%esi)
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movl %eax,8(%esi)
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popl %esi
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leave
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ret
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ENDPROC(shr_Xsig)
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