unimore/kernel-hacking-2024-linux-steffo
unimore/kernel-hacking-2024-linux-steffo
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um: merge processor_{32,64}.h a bit...

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Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Signed-off-by: Richard Weinberger <richard@nod.at>
This commit is contained in:
Al Viro 2011-11-20 17:23:39 -05:00 committed by Richard Weinberger
parent 10c890c0a3
commit c56334dbf7
3 changed files with 10 additions and 20 deletions
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10
arch/x86/um/asm/processor.h
View file

@ -17,6 +17,16 @@
#define ARCH_IS_STACKGROW(address) \
(address + 65536 + 32 * sizeof(unsigned long) >= UPT_SP(&current->thread.regs.regs))
#include <asm/user.h>
/* REP NOP (PAUSE) is a good thing to insert into busy-wait loops. */
static inline void rep_nop(void)
{
__asm__ __volatile__("rep;nop": : :"memory");
}
#define cpu_relax() rep_nop()
#include <asm/processor-generic.h>
#endif

10
arch/x86/um/asm/processor_32.h
View file

@ -45,16 +45,6 @@ static inline void arch_copy_thread(struct arch_thread *from,
memcpy(&to->tls_array, &from->tls_array, sizeof(from->tls_array));
}
#include <asm/user.h>
/* REP NOP (PAUSE) is a good thing to insert into busy-wait loops. */
static inline void rep_nop(void)
{
__asm__ __volatile__("rep;nop": : :"memory");
}
#define cpu_relax() rep_nop()
/*
* Default implementation of macro that returns current
* instruction pointer ("program counter"). Stolen

10
arch/x86/um/asm/processor_64.h
View file

@ -14,14 +14,6 @@ struct arch_thread {
struct faultinfo faultinfo;
};
/* REP NOP (PAUSE) is a good thing to insert into busy-wait loops. */
static inline void rep_nop(void)
{
__asm__ __volatile__("rep;nop": : :"memory");
}
#define cpu_relax() rep_nop()
#define INIT_ARCH_THREAD { .debugregs = { [ 0 ... 7 ] = 0 }, \
.debugregs_seq = 0, \
.fs = 0, \
@ -37,8 +29,6 @@ static inline void arch_copy_thread(struct arch_thread *from,
to->fs = from->fs;
}
#include <asm/user.h>
#define current_text_addr() \
({ void *pc; __asm__("movq $1f,%0\n1:":"=g" (pc)); pc; })