Messages in this thread Patch in this message | | | Date | Thu, 31 Jul 2003 23:27:06 +0200 (MEST) | From | Mikael Pettersson <> | Subject | [PATCH] fix x86-64 compile errors in 2.6.0-test2 |
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x86-64 needs these two fixes to build in 2.6.0-test2: - Add include/asm-x86_64/local.h which is now required. This is a copy of i386' local.h with s/long/int/ since local_t should be consistent with atomic_t, which is 32 bits. - Updated x86-64's ia32_binfmt.c:elf_core_copy_task_fpregs() to match its updated prototype. The new struct pt_regs* parameter should (as far as I can tell from inspecting patch-2.6.0-test2 and x86-64's dump_fpu()) simply be ignored.
/Mikael
diff -ruN linux-2.6.0-test2/arch/x86_64/ia32/ia32_binfmt.c linux-2.6.0-test2.x86_64-fixes/arch/x86_64/ia32/ia32_binfmt.c --- linux-2.6.0-test2/arch/x86_64/ia32/ia32_binfmt.c 2003-07-11 00:08:27.000000000 +0200 +++ linux-2.6.0-test2.x86_64-fixes/arch/x86_64/ia32/ia32_binfmt.c 2003-07-31 23:02:29.000000000 +0200 @@ -202,7 +202,7 @@ } static inline int -elf_core_copy_task_fpregs(struct task_struct *tsk, elf_fpregset_t *fpu) +elf_core_copy_task_fpregs(struct task_struct *tsk, struct pt_regs *ignored, elf_fpregset_t *fpu) { struct _fpstate_ia32 *fpstate = (void*)fpu; struct pt_regs *regs = (struct pt_regs *)(tsk->thread.rsp0); diff -ruN linux-2.6.0-test2/include/asm-x86_64/local.h linux-2.6.0-test2.x86_64-fixes/include/asm-x86_64/local.h --- linux-2.6.0-test2/include/asm-x86_64/local.h 1970-01-01 01:00:00.000000000 +0100 +++ linux-2.6.0-test2.x86_64-fixes/include/asm-x86_64/local.h 2003-07-31 23:03:28.000000000 +0200 @@ -0,0 +1,72 @@ +#ifndef _ARCH_X86_64_LOCAL_H +#define _ARCH_X86_64_LOCAL_H + +/* copy of include/asm-i386/local.h with s/long/int/ for consistency with atomic_t */ + +#include <linux/percpu.h> + +typedef struct +{ + volatile unsigned int counter; +} local_t; + +#define LOCAL_INIT(i) { (i) } + +#define local_read(v) ((v)->counter) +#define local_set(v,i) (((v)->counter) = (i)) + +static __inline__ void local_inc(local_t *v) +{ + __asm__ __volatile__( + "incl %0" + :"=m" (v->counter) + :"m" (v->counter)); +} + +static __inline__ void local_dec(local_t *v) +{ + __asm__ __volatile__( + "decl %0" + :"=m" (v->counter) + :"m" (v->counter)); +} + +static __inline__ void local_add(unsigned int i, local_t *v) +{ + __asm__ __volatile__( + "addl %1,%0" + :"=m" (v->counter) + :"ir" (i), "m" (v->counter)); +} + +static __inline__ void local_sub(unsigned int i, local_t *v) +{ + __asm__ __volatile__( + "subl %1,%0" + :"=m" (v->counter) + :"ir" (i), "m" (v->counter)); +} + +/* On x86, these are no better than the atomic variants. */ +#define __local_inc(l) local_inc(l) +#define __local_dec(l) local_dec(l) +#define __local_add(i,l) local_add((i),(l)) +#define __local_sub(i,l) local_sub((i),(l)) + +/* Use these for per-cpu local_t variables: on some archs they are + * much more efficient than these naive implementations. Note they take + * a variable, not an address. + */ +#define cpu_local_read(v) local_read(&__get_cpu_var(v)) +#define cpu_local_set(v, i) local_set(&__get_cpu_var(v), (i)) +#define cpu_local_inc(v) local_inc(&__get_cpu_var(v)) +#define cpu_local_dec(v) local_dec(&__get_cpu_var(v)) +#define cpu_local_add(i, v) local_add((i), &__get_cpu_var(v)) +#define cpu_local_sub(i, v) local_sub((i), &__get_cpu_var(v)) + +#define __cpu_local_inc(v) cpu_local_inc(v) +#define __cpu_local_dec(v) cpu_local_dec(v) +#define __cpu_local_add(i, v) cpu_local_add((i), (v)) +#define __cpu_local_sub(i, v) cpu_local_sub((i), (v)) + +#endif /* _ARCH_X86_64_LOCAL_H */ - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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