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Re: [PATCH] PPC32 cancellation support
- From: Ulrich Drepper <drepper at redhat dot com>
- To: Franz Sirl <Franz dot Sirl-kernel at lauterbach dot com>
- Cc: libc-alpha at sources dot redhat dot com
- Date: Sat, 04 Jan 2003 12:22:21 -0800
- Subject: Re: [PATCH] PPC32 cancellation support
- Organization: Red Hat, Inc.
- References: <200301041706.01642@enzo.bigblue.local>
Franz Sirl wrote:
> +# ifndef __ASSEMBLER__
> +extern int __local_multiple_threads attribute_hidden;
> +# define SINGLE_THREAD_P __builtin_expect (__local_multiple_threads == 0, 1)
> +# else
> +# if !defined PIC
> +# define SINGLE_THREAD_P \
> + lis 10,__local_multiple_threads@ha; \
> + lwz 10,__local_multiple_threads@l(10); \
> + cmpwi 10,0
> +# else
> +# if !defined HAVE_HIDDEN || !USE___THREAD
> +# define SINGLE_THREAD_P \
> + mflr 9; \
> + bl _GLOBAL_OFFSET_TABLE_@local-4; \
> + mflr 10; \
> + mtlr 9; \
> + lwz 10,__local_multiple_threads@got(10); \
> + lwz 10,0(10); \
> + cmpwi 10,0
> +# else
> +# define SINGLE_THREAD_P \
> + mflr 9; \
> + bl _GLOBAL_OFFSET_TABLE_@local-4; \
> + mflr 10; \
> + mtlr 9; \
> + lwz 10,__local_multiple_threads@got(10); \
> + lwz 10,0(10); \
> + cmpwi 10,0
> +# endif
> +# endif
> +# endif
Do I mis something or are the two SINGLE_THREAD_P asm constructs identical?
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