FreeBSD/Linux Kernel Cross Reference
sys/osfmk/i386/genassym.c

     /*
      * Copyright (c) 2000-2003 Apple Computer, Inc. All rights reserved.
      *
      * @APPLE_LICENSE_HEADER_START@
      * 
      * Copyright (c) 1999-2003 Apple Computer, Inc.  All Rights Reserved.
      * 
      * This file contains Original Code and/or Modifications of Original Code
      * as defined in and that are subject to the Apple Public Source License
     * Version 2.0 (the 'License'). You may not use this file except in
     * compliance with the License. Please obtain a copy of the License at
     * http://www.opensource.apple.com/apsl/ and read it before using this
     * file.
     * 
     * The Original Code and all software distributed under the License are
     * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
     * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
     * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
     * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
     * Please see the License for the specific language governing rights and
     * limitations under the License.
     * 
     * @APPLE_LICENSE_HEADER_END@
     */
    /*
     * @OSF_COPYRIGHT@
     */
    /* 
     * Mach Operating System
     * Copyright (c) 1991,1990 Carnegie Mellon University
     * All Rights Reserved.
     * 
     * Permission to use, copy, modify and distribute this software and its
     * documentation is hereby granted, provided that both the copyright
     * notice and this permission notice appear in all copies of the
     * software, derivative works or modified versions, and any portions
     * thereof, and that both notices appear in supporting documentation.
     * 
     * CARNEGIE MELLON ALLOWS FREE USE OF THIS SOFTWARE IN ITS "AS IS"
     * CONDITION.  CARNEGIE MELLON DISCLAIMS ANY LIABILITY OF ANY KIND FOR
     * ANY DAMAGES WHATSOEVER RESULTING FROM THE USE OF THIS SOFTWARE.
     * 
     * Carnegie Mellon requests users of this software to return to
     * 
     *  Software Distribution Coordinator  or  Software.Distribution@CS.CMU.EDU
     *  School of Computer Science
     *  Carnegie Mellon University
     *  Pittsburgh PA 15213-3890
     * 
     * any improvements or extensions that they make and grant Carnegie Mellon
     * the rights to redistribute these changes.
     */
    
    #include <platforms.h>
    #include <cpus.h>
    #include <mach_kdb.h>
    #include <mach_ldebug.h>
    #include <stat_time.h>
    
    /*
     * Pass field offsets to assembly code.
     */
    #include <kern/ast.h>
    #include <kern/thread.h>
    #include <kern/task.h>
    #include <kern/lock.h>
    #include <kern/thread_act.h>
    #include <ipc/ipc_space.h>
    #include <ipc/ipc_port.h>
    #include <ipc/ipc_pset.h>
    #include <kern/host.h>
    #include <kern/misc_protos.h>
    #include <kern/syscall_emulation.h>
    #include <i386/thread.h>
    #include <mach/i386/vm_param.h>
    #include <i386/seg.h>
    #include <i386/pmap.h>
    #include <i386/tss.h>
    #include <vm/vm_map.h>
    #if     NCPUS > 1
    #include <i386/mp_desc.h>
    #endif
    
    extern void   kernel_preempt_check(void);
    cpu_data_t    cpu_data[NCPUS];
    
    /*
     * genassym.c is used to produce an
     * assembly file which, intermingled with unuseful assembly code,
     * has all the necessary definitions emitted. This assembly file is
     * then postprocessed with sed to extract only these definitions
     * and thus the final assyms.s is created.
     *
     * This convoluted means is necessary since the structure alignment
     * and packing may be different between the host machine and the
     * target so we are forced into using the cross compiler to generate
     * the values, but we cannot run anything on the target machine.
     */
    
   #undef  offsetof
   #define offsetof(TYPE, MEMBER) ((size_t) &((TYPE)0)->MEMBER)
   
   #if  0
   #define DECLARE(SYM,VAL) \
           __asm("#DEFINITION#\t.set\t" SYM ",\t%0" : : "n" ((u_int)(VAL)))
   #else
   #define DECLARE(SYM,VAL) \
           __asm("#DEFINITION##define " SYM "\t%0" : : "n" ((u_int)(VAL)))
   #endif
   
   int     main(
                   int             argc,
                   char            ** argv);
   
   int
   main(
           int     argc,
           char    **argv)
   {
   
           DECLARE("AST_URGENT",           AST_URGENT);
   
           /* Simple Lock structure */
           DECLARE("SLOCK_ILK",    offsetof(usimple_lock_t, interlock));
   #if     MACH_LDEBUG
           DECLARE("SLOCK_TYPE",   offsetof(usimple_lock_t, lock_type));
           DECLARE("SLOCK_PC",     offsetof(usimple_lock_t, debug.lock_pc));
           DECLARE("SLOCK_THREAD", offsetof(usimple_lock_t, debug.lock_thread));
           DECLARE("SLOCK_DURATIONH",offsetof(usimple_lock_t, debug.duration[0]));
           DECLARE("SLOCK_DURATIONL",offsetof(usimple_lock_t, debug.duration[1]));
           DECLARE("USLOCK_TAG",   USLOCK_TAG);
   #endif  /* MACH_LDEBUG */
   
           /* Mutex structure */
           DECLARE("MUTEX_LOCKED", offsetof(mutex_t *, locked));
           DECLARE("MUTEX_WAITERS",offsetof(mutex_t *, waiters));
           DECLARE("MUTEX_PROMOTED_PRI",offsetof(mutex_t *, promoted_pri));
   #if     MACH_LDEBUG
           DECLARE("MUTEX_TYPE",   offsetof(mutex_t *, type));
           DECLARE("MUTEX_PC",     offsetof(mutex_t *, pc));
           DECLARE("MUTEX_THREAD", offsetof(mutex_t *, thread));
           DECLARE("MUTEX_TAG",    MUTEX_TAG);
   #endif  /* MACH_LDEBUG */
                                                    
   #if     MACH_LDEBUG
           DECLARE("TH_MUTEX_COUNT",       offsetof(thread_t, mutex_count));
   #endif  /* MACH_LDEBUG */
           DECLARE("TH_RECOVER",           offsetof(thread_t, recover));
           DECLARE("TH_CONTINUATION",      offsetof(thread_t, continuation));
           DECLARE("TH_TOP_ACT",           offsetof(thread_t, top_act));
           DECLARE("TH_KERNEL_STACK",      offsetof(thread_t, kernel_stack));
   
           DECLARE("TASK_EMUL",            offsetof(task_t, eml_dispatch));
           DECLARE("TASK_MACH_EXC_PORT",
                   offsetof(task_t, exc_actions[EXC_MACH_SYSCALL].port));
   
           /* These fields are being added on demand */
           DECLARE("ACT_MACH_EXC_PORT",
                   offsetof(thread_act_t, exc_actions[EXC_MACH_SYSCALL].port));
   
           DECLARE("ACT_THREAD",   offsetof(thread_act_t, thread));
           DECLARE("ACT_TASK",     offsetof(thread_act_t, task));
           DECLARE("ACT_PCB",      offsetof(thread_act_t, mact.pcb));
           DECLARE("ACT_LOWER",    offsetof(thread_act_t, lower));
           DECLARE("ACT_MAP",      offsetof(thread_act_t, map));
   
           DECLARE("MAP_PMAP",     offsetof(vm_map_t, pmap));
   
           DECLARE("DISP_MIN",     offsetof(eml_dispatch_t, disp_min));
           DECLARE("DISP_COUNT",   offsetof(eml_dispatch_t, disp_count));
           DECLARE("DISP_VECTOR",  offsetof(eml_dispatch_t, disp_vector[0]));
   
   #define IKS ((size_t) (STACK_IKS(0)))
   
           DECLARE("KSS_EBX", IKS + offsetof(struct i386_kernel_state *, k_ebx));
           DECLARE("KSS_ESP", IKS + offsetof(struct i386_kernel_state *, k_esp));
           DECLARE("KSS_EBP", IKS + offsetof(struct i386_kernel_state *, k_ebp));
           DECLARE("KSS_EDI", IKS + offsetof(struct i386_kernel_state *, k_edi));
           DECLARE("KSS_ESI", IKS + offsetof(struct i386_kernel_state *, k_esi));
           DECLARE("KSS_EIP", IKS + offsetof(struct i386_kernel_state *, k_eip));
   
           DECLARE("IKS_SIZE",     sizeof(struct i386_kernel_state));
           DECLARE("IEL_SIZE",     sizeof(struct i386_exception_link));
   
           DECLARE("PCB_FPS",      offsetof(pcb_t, ims.ifps));
           DECLARE("PCB_ISS",      offsetof(pcb_t, iss));
   
           DECLARE("FP_VALID",     offsetof(struct i386_fpsave_state *,fp_valid));
           DECLARE("FP_SAVE_STATE",
                   offsetof(struct i386_fpsave_state *, fp_save_state));
   
           DECLARE("R_CS",         offsetof(struct i386_saved_state *, cs));
           DECLARE("R_SS",         offsetof(struct i386_saved_state *, ss));
           DECLARE("R_UESP",       offsetof(struct i386_saved_state *, uesp));
           DECLARE("R_EBP",        offsetof(struct i386_saved_state *, ebp));
           DECLARE("R_EAX",        offsetof(struct i386_saved_state *, eax));
           DECLARE("R_EBX",        offsetof(struct i386_saved_state *, ebx));
           DECLARE("R_ECX",        offsetof(struct i386_saved_state *, ecx));
           DECLARE("R_EDX",        offsetof(struct i386_saved_state *, edx));
           DECLARE("R_ESI",        offsetof(struct i386_saved_state *, esi));
           DECLARE("R_EDI",        offsetof(struct i386_saved_state *, edi));
           DECLARE("R_TRAPNO",     offsetof(struct i386_saved_state *, trapno));
           DECLARE("R_ERR",        offsetof(struct i386_saved_state *, err));
           DECLARE("R_EFLAGS",     offsetof(struct i386_saved_state *, efl));
           DECLARE("R_EIP",        offsetof(struct i386_saved_state *, eip));
           DECLARE("R_CR2",        offsetof(struct i386_saved_state *, cr2));
           DECLARE("ISS_SIZE",     sizeof (struct i386_saved_state));
   
           DECLARE("I_ECX",        offsetof(struct i386_interrupt_state *, ecx));
           DECLARE("I_EIP",        offsetof(struct i386_interrupt_state *, eip));
           DECLARE("I_CS",         offsetof(struct i386_interrupt_state *, cs));
           DECLARE("I_EFL",        offsetof(struct i386_interrupt_state *, efl));
   
           DECLARE("NBPG",                 I386_PGBYTES);
           DECLARE("VM_MIN_ADDRESS",       VM_MIN_ADDRESS);
           DECLARE("VM_MAX_ADDRESS",       VM_MAX_ADDRESS);
           DECLARE("KERNELBASE",           VM_MIN_KERNEL_ADDRESS);
           DECLARE("LINEAR_KERNELBASE",    LINEAR_KERNEL_ADDRESS);
           DECLARE("KERNEL_STACK_SIZE",    KERNEL_STACK_SIZE);
   
           DECLARE("PDESHIFT",     PDESHIFT);
           DECLARE("PTESHIFT",     PTESHIFT);
           DECLARE("PTEMASK",      PTEMASK);
   
           DECLARE("PTE_PFN",      INTEL_PTE_PFN);
           DECLARE("PTE_V",        INTEL_PTE_VALID);
           DECLARE("PTE_W",        INTEL_PTE_WRITE);
           DECLARE("PTE_INVALID",  ~INTEL_PTE_VALID);
   
           DECLARE("IDTSZ",        IDTSZ);
           DECLARE("GDTSZ",        GDTSZ);
           DECLARE("LDTSZ",        LDTSZ);
   
           DECLARE("KERNEL_CS",    KERNEL_CS);
           DECLARE("KERNEL_DS",    KERNEL_DS);
           DECLARE("USER_CS",      USER_CS);
           DECLARE("USER_DS",      USER_DS);
           DECLARE("KERNEL_TSS",   KERNEL_TSS);
           DECLARE("KERNEL_LDT",   KERNEL_LDT);
   #if     MACH_KDB
           DECLARE("DEBUG_TSS",    DEBUG_TSS);
   #endif  /* MACH_KDB */
   
           DECLARE("CPU_DATA",     CPU_DATA);
           DECLARE("CPD_ACTIVE_THREAD",
                   offsetof(cpu_data_t *, active_thread));
   #if     MACH_RT
           DECLARE("CPD_PREEMPTION_LEVEL",
                   offsetof(cpu_data_t *, preemption_level));
   #endif  /* MACH_RT */
           DECLARE("CPD_INTERRUPT_LEVEL",
                   offsetof(cpu_data_t *, interrupt_level));
           DECLARE("CPD_SIMPLE_LOCK_COUNT",
                   offsetof(cpu_data_t *,simple_lock_count));
           DECLARE("CPD_CPU_NUMBER",
                   offsetof(cpu_data_t *,cpu_number));
           DECLARE("CPD_CPU_PHYS_NUMBER",
                   offsetof(cpu_data_t *,cpu_phys_number));
           DECLARE("CPD_CPU_STATUS",
                   offsetof(cpu_data_t *,cpu_status));
           DECLARE("CPD_MCOUNT_OFF",
                   offsetof(cpu_data_t *,mcount_off));
   
           DECLARE("PTES_PER_PAGE",        NPTES);
           DECLARE("INTEL_PTE_KERNEL",     INTEL_PTE_VALID|INTEL_PTE_WRITE);
   
           DECLARE("KERNELBASEPDE",
                   (LINEAR_KERNEL_ADDRESS >> PDESHIFT) *
                   sizeof(pt_entry_t));
   
           DECLARE("TSS_ESP0",     offsetof(struct i386_tss *, esp0));
           DECLARE("TSS_SS0",      offsetof(struct i386_tss *, ss0));
           DECLARE("TSS_LDT",      offsetof(struct i386_tss *, ldt));
           DECLARE("TSS_PDBR",     offsetof(struct i386_tss *, cr3));
           DECLARE("TSS_LINK",     offsetof(struct i386_tss *, back_link));
   
           DECLARE("K_TASK_GATE",  ACC_P|ACC_PL_K|ACC_TASK_GATE);
           DECLARE("K_TRAP_GATE",  ACC_P|ACC_PL_K|ACC_TRAP_GATE);
           DECLARE("U_TRAP_GATE",  ACC_P|ACC_PL_U|ACC_TRAP_GATE);
           DECLARE("K_INTR_GATE",  ACC_P|ACC_PL_K|ACC_INTR_GATE);
           DECLARE("K_TSS",        ACC_P|ACC_PL_K|ACC_TSS);
   
           /*
            *      usimple_lock fields
            */
           DECLARE("USL_INTERLOCK",        offsetof(usimple_lock_t, interlock));
   
           DECLARE("INTSTACK_SIZE",        INTSTACK_SIZE);
   #if     NCPUS > 1
           DECLARE("MP_GDT",          offsetof(struct mp_desc_table *, gdt[0]));
           DECLARE("MP_IDT",          offsetof(struct mp_desc_table *, idt[0]));
   #endif  /* NCPUS > 1 */
   #if     !STAT_TIME
           DECLARE("LOW_BITS",        offsetof(struct timer *, low_bits));
           DECLARE("HIGH_BITS",       offsetof(struct timer *, high_bits));
           DECLARE("HIGH_BITS_CHECK", offsetof(struct timer *, high_bits_check));
           DECLARE("TIMER_HIGH_UNIT", TIMER_HIGH_UNIT);
           DECLARE("TH_SYS_TIMER",    offsetof(struct timer *, system_timer));
           DECLARE("TH_USER_TIMER",   offsetof(struct timer *, user_timer));
   #endif
   
           return (0);
   }
   
   
   /* Dummy to keep linker quiet */
   void
   kernel_preempt_check(void)
   {
   }

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