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Annotation of linux/include/asm/system.h, revision 1.1.1.5

1.1       root        1: #define move_to_user_mode() \
1.1.1.5 ! root        2: __asm__ __volatile__ ("movl %%esp,%%eax\n\t" \
1.1       root        3:        "pushl $0x17\n\t" \
                      4:        "pushl %%eax\n\t" \
                      5:        "pushfl\n\t" \
                      6:        "pushl $0x0f\n\t" \
                      7:        "pushl $1f\n\t" \
                      8:        "iret\n" \
                      9:        "1:\tmovl $0x17,%%eax\n\t" \
1.1.1.2   root       10:        "mov %%ax,%%ds\n\t" \
                     11:        "mov %%ax,%%es\n\t" \
                     12:        "mov %%ax,%%fs\n\t" \
                     13:        "mov %%ax,%%gs" \
1.1       root       14:        :::"ax")
                     15: 
1.1.1.5 ! root       16: #define sti() __asm__ __volatile__ ("sti"::)
        !            17: #define cli() __asm__ __volatile__ ("cli"::)
        !            18: #define nop() __asm__ __volatile__ ("nop"::)
1.1       root       19: 
1.1.1.5 ! root       20: #define iret() __asm__ __volatile__ ("iret"::)
1.1       root       21: 
                     22: #define _set_gate(gate_addr,type,dpl,addr) \
1.1.1.5 ! root       23: __asm__ __volatile__ ("movw %%dx,%%ax\n\t" \
1.1       root       24:        "movw %0,%%dx\n\t" \
                     25:        "movl %%eax,%1\n\t" \
                     26:        "movl %%edx,%2" \
1.1.1.3   root       27:        :: "i" ((short) (0x8000+(dpl<<13)+(type<<8))), \
                     28:        "m" (*((char *) (gate_addr))), \
                     29:        "m" (*(4+(char *) (gate_addr))), \
                     30:        "d" ((char *) (addr)),"a" (0x00080000) \
                     31:        :"ax","dx")
1.1       root       32: 
                     33: #define set_intr_gate(n,addr) \
                     34:        _set_gate(&idt[n],14,0,addr)
                     35: 
                     36: #define set_trap_gate(n,addr) \
                     37:        _set_gate(&idt[n],15,0,addr)
                     38: 
                     39: #define set_system_gate(n,addr) \
                     40:        _set_gate(&idt[n],15,3,addr)
                     41: 
                     42: #define _set_seg_desc(gate_addr,type,dpl,base,limit) {\
                     43:        *(gate_addr) = ((base) & 0xff000000) | \
                     44:                (((base) & 0x00ff0000)>>16) | \
                     45:                ((limit) & 0xf0000) | \
                     46:                ((dpl)<<13) | \
                     47:                (0x00408000) | \
                     48:                ((type)<<8); \
                     49:        *((gate_addr)+1) = (((base) & 0x0000ffff)<<16) | \
                     50:                ((limit) & 0x0ffff); }
                     51: 
                     52: #define _set_tssldt_desc(n,addr,type) \
1.1.1.5 ! root       53: __asm__ __volatile__ ("movw $232,%1\n\t" \
1.1       root       54:        "movw %%ax,%2\n\t" \
                     55:        "rorl $16,%%eax\n\t" \
                     56:        "movb %%al,%3\n\t" \
                     57:        "movb $" type ",%4\n\t" \
                     58:        "movb $0x00,%5\n\t" \
                     59:        "movb %%ah,%6\n\t" \
                     60:        "rorl $16,%%eax" \
                     61:        ::"a" (addr), "m" (*(n)), "m" (*(n+2)), "m" (*(n+4)), \
                     62:         "m" (*(n+5)), "m" (*(n+6)), "m" (*(n+7)) \
                     63:        )
                     64: 
                     65: #define set_tss_desc(n,addr) _set_tssldt_desc(((char *) (n)),addr,"0x89")
                     66: #define set_ldt_desc(n,addr) _set_tssldt_desc(((char *) (n)),addr,"0x82")

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