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- /*
- * Copyright (C) 2002 Jeff Dike (jdike@karaya.com)
- * Licensed under the GPL
- */
- #ifndef __UM_PROCESSOR_I386_H
- #define __UM_PROCESSOR_I386_H
- #include <linux/string.h>
- #include <asm/segment.h>
- #include <asm/ldt.h>
- extern int host_has_cmov;
- struct uml_tls_struct {
- struct user_desc tls;
- unsigned flushed:1;
- unsigned present:1;
- };
- struct arch_thread {
- struct uml_tls_struct tls_array[GDT_ENTRY_TLS_ENTRIES];
- unsigned long debugregs[8];
- int debugregs_seq;
- struct faultinfo faultinfo;
- };
- #define INIT_ARCH_THREAD { \
- .tls_array = { [ 0 ... GDT_ENTRY_TLS_ENTRIES - 1 ] = \
- { .present = 0, .flushed = 0 } }, \
- .debugregs = { [ 0 ... 7 ] = 0 }, \
- .debugregs_seq = 0, \
- .faultinfo = { 0, 0, 0 } \
- }
- #define STACKSLOTS_PER_LINE 8
- static inline void arch_flush_thread(struct arch_thread *thread)
- {
- /* Clear any TLS still hanging */
- memset(&thread->tls_array, 0, sizeof(thread->tls_array));
- }
- static inline void arch_copy_thread(struct arch_thread *from,
- struct arch_thread *to)
- {
- memcpy(&to->tls_array, &from->tls_array, sizeof(from->tls_array));
- }
- /*
- * Default implementation of macro that returns current
- * instruction pointer ("program counter"). Stolen
- * from asm-i386/processor.h
- */
- #define current_text_addr() \
- ({ void *pc; __asm__("movl $1f,%0\n1:":"=g" (pc)); pc; })
- #define current_sp() ({ void *sp; __asm__("movl %%esp, %0" : "=r" (sp) : ); sp; })
- #define current_bp() ({ unsigned long bp; __asm__("movl %%ebp, %0" : "=r" (bp) : ); bp; })
- #endif
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