osfmk/i386/genassym.c

   1 /*
   2  * Copyright (c) 2000-2003 Apple Computer, Inc. All rights reserved.
   3  *
   4  * @APPLE_LICENSE_HEADER_START@
   5  *
   6  * The contents of this file constitute Original Code as defined in and
   7  * are subject to the Apple Public Source License Version 1.1 (the
   8  * "License").  You may not use this file except in compliance with the
   9  * License.  Please obtain a copy of the License at
  10  * http://www.apple.com/publicsource and read it before using this file.
  11  *
  12  * This Original Code and all software distributed under the License are
  13  * distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY KIND, EITHER
  14  * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
  15  * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
  16  * FITNESS FOR A PARTICULAR PURPOSE OR NON-INFRINGEMENT.  Please see the
  17  * License for the specific language governing rights and limitations
  18  * under the License.
  19  *
  20  * @APPLE_LICENSE_HEADER_END@
  21  */
  22 /*
  23  * @OSF_COPYRIGHT@
  24  */
  25 /*
  26  * Mach Operating System
  27  * Copyright (c) 1991,1990 Carnegie Mellon University
  28  * All Rights Reserved.
  29  *
  30  * Permission to use, copy, modify and distribute this software and its
  31  * documentation is hereby granted, provided that both the copyright
  32  * notice and this permission notice appear in all copies of the
  33  * software, derivative works or modified versions, and any portions
  34  * thereof, and that both notices appear in supporting documentation.
  35  *
  36  * CARNEGIE MELLON ALLOWS FREE USE OF THIS SOFTWARE IN ITS "AS IS"
  37  * CONDITION.  CARNEGIE MELLON DISCLAIMS ANY LIABILITY OF ANY KIND FOR
  38  * ANY DAMAGES WHATSOEVER RESULTING FROM THE USE OF THIS SOFTWARE.
  39  *
  40  * Carnegie Mellon requests users of this software to return to
  41  *
  42  *  Software Distribution Coordinator  or  Software.Distribution@CS.CMU.EDU
  43  *  School of Computer Science
  44  *  Carnegie Mellon University
  45  *  Pittsburgh PA 15213-3890
  46  *
  47  * any improvements or extensions that they make and grant Carnegie Mellon
  48  * the rights to redistribute these changes.
  49  */
  50
  51 #include <platforms.h>
  52 #include <cpus.h>
  53 #include <mach_kdb.h>
  54 #include <mach_ldebug.h>
  55 #include <stat_time.h>
  56
  57 /*
  58  * Pass field offsets to assembly code.
  59  */
  60 #include <kern/ast.h>
  61 #include <kern/thread.h>
  62 #include <kern/task.h>
  63 #include <kern/lock.h>
  64 #include <kern/thread_act.h>
  65 #include <ipc/ipc_space.h>
  66 #include <ipc/ipc_port.h>
  67 #include <ipc/ipc_pset.h>
  68 #include <kern/host.h>
  69 #include <kern/misc_protos.h>
  70 #include <kern/syscall_emulation.h>
  71 #include <i386/thread.h>
  72 #include <mach/i386/vm_param.h>
  73 #include <i386/seg.h>
  74 #include <i386/pmap.h>
  75 #include <i386/tss.h>
  76 #include <vm/vm_map.h>
  77 #if     NCPUS > 1
  78 #include <i386/mp_desc.h>
  79 #endif
  80
  81 extern void   kernel_preempt_check(void);
  82 cpu_data_t    cpu_data[NCPUS];
  83
  84 /*
  85  * genassym.c is used to produce an
  86  * assembly file which, intermingled with unuseful assembly code,
  87  * has all the necessary definitions emitted. This assembly file is
  88  * then postprocessed with sed to extract only these definitions
  89  * and thus the final assyms.s is created.
  90  *
  91  * This convoluted means is necessary since the structure alignment
  92  * and packing may be different between the host machine and the
  93  * target so we are forced into using the cross compiler to generate
  94  * the values, but we cannot run anything on the target machine.
  95  */
  96
  97 #undef  offsetof
  98 #define offsetof(TYPE, MEMBER) ((size_t) &((TYPE)0)->MEMBER)
  99
 100 #if  0
 101 #define DECLARE(SYM,VAL) \
 102         __asm("#DEFINITION#\t.set\t" SYM ",\t%0" : : "n" ((u_int)(VAL)))
 103 #else
 104 #define DECLARE(SYM,VAL) \
 105         __asm("#DEFINITION##define " SYM "\t%0" : : "n" ((u_int)(VAL)))
 106 #endif
 107
 108 int     main(
 109                 int             argc,
 110                 char            ** argv);
 111
 112 int
 113 main(
 114         int     argc,
 115         char    **argv)
 116 {
 117
 118         DECLARE("AST_URGENT",           AST_URGENT);
 119
 120         /* Simple Lock structure */
 121         DECLARE("SLOCK_ILK",    offsetof(usimple_lock_t, interlock));
 122 #if     MACH_LDEBUG
 123         DECLARE("SLOCK_TYPE",   offsetof(usimple_lock_t, lock_type));
 124         DECLARE("SLOCK_PC",     offsetof(usimple_lock_t, debug.lock_pc));
 125         DECLARE("SLOCK_THREAD", offsetof(usimple_lock_t, debug.lock_thread));
 126         DECLARE("SLOCK_DURATIONH",offsetof(usimple_lock_t, debug.duration[0]));
 127         DECLARE("SLOCK_DURATIONL",offsetof(usimple_lock_t, debug.duration[1]));
 128         DECLARE("USLOCK_TAG",   USLOCK_TAG);
 129 #endif  /* MACH_LDEBUG */
 130
 131         /* Mutex structure */
 132         DECLARE("MUTEX_LOCKED", offsetof(mutex_t *, locked));
 133         DECLARE("MUTEX_WAITERS",offsetof(mutex_t *, waiters));
 134         DECLARE("MUTEX_PROMOTED_PRI",offsetof(mutex_t *, promoted_pri));
 135 #if     MACH_LDEBUG
 136         DECLARE("MUTEX_TYPE",   offsetof(mutex_t *, type));
 137         DECLARE("MUTEX_PC",     offsetof(mutex_t *, pc));
 138         DECLARE("MUTEX_THREAD", offsetof(mutex_t *, thread));
 139         DECLARE("MUTEX_TAG",    MUTEX_TAG);
 140 #endif  /* MACH_LDEBUG */
 141
 142 #if     MACH_LDEBUG
 143         DECLARE("TH_MUTEX_COUNT",       offsetof(thread_t, mutex_count));
 144 #endif  /* MACH_LDEBUG */
 145         DECLARE("TH_RECOVER",           offsetof(thread_t, recover));
 146         DECLARE("TH_CONTINUATION",      offsetof(thread_t, continuation));
 147         DECLARE("TH_TOP_ACT",           offsetof(thread_t, top_act));
 148         DECLARE("TH_KERNEL_STACK",      offsetof(thread_t, kernel_stack));
 149
 150         DECLARE("TASK_EMUL",            offsetof(task_t, eml_dispatch));
 151         DECLARE("TASK_MACH_EXC_PORT",
 152                 offsetof(task_t, exc_actions[EXC_MACH_SYSCALL].port));
 153
 154         /* These fields are being added on demand */
 155         DECLARE("ACT_MACH_EXC_PORT",
 156                 offsetof(thread_act_t, exc_actions[EXC_MACH_SYSCALL].port));
 157
 158         DECLARE("ACT_THREAD",   offsetof(thread_act_t, thread));
 159         DECLARE("ACT_TASK",     offsetof(thread_act_t, task));
 160         DECLARE("ACT_PCB",      offsetof(thread_act_t, mact.pcb));
 161         DECLARE("ACT_LOWER",    offsetof(thread_act_t, lower));
 162         DECLARE("ACT_MAP",      offsetof(thread_act_t, map));
 163
 164         DECLARE("MAP_PMAP",     offsetof(vm_map_t, pmap));
 165
 166         DECLARE("DISP_MIN",     offsetof(eml_dispatch_t, disp_min));
 167         DECLARE("DISP_COUNT",   offsetof(eml_dispatch_t, disp_count));
 168         DECLARE("DISP_VECTOR",  offsetof(eml_dispatch_t, disp_vector[0]));
 169
 170 #define IKS ((size_t) (STACK_IKS(0)))
 171
 172         DECLARE("KSS_EBX", IKS + offsetof(struct i386_kernel_state *, k_ebx));
 173         DECLARE("KSS_ESP", IKS + offsetof(struct i386_kernel_state *, k_esp));
 174         DECLARE("KSS_EBP", IKS + offsetof(struct i386_kernel_state *, k_ebp));
 175         DECLARE("KSS_EDI", IKS + offsetof(struct i386_kernel_state *, k_edi));
 176         DECLARE("KSS_ESI", IKS + offsetof(struct i386_kernel_state *, k_esi));
 177         DECLARE("KSS_EIP", IKS + offsetof(struct i386_kernel_state *, k_eip));
 178
 179         DECLARE("IKS_SIZE",     sizeof(struct i386_kernel_state));
 180         DECLARE("IEL_SIZE",     sizeof(struct i386_exception_link));
 181
 182         DECLARE("PCB_FPS",      offsetof(pcb_t, ims.ifps));
 183         DECLARE("PCB_ISS",      offsetof(pcb_t, iss));
 184
 185         DECLARE("FP_VALID",     offsetof(struct i386_fpsave_state *,fp_valid));
 186         DECLARE("FP_SAVE_STATE",
 187                 offsetof(struct i386_fpsave_state *, fp_save_state));
 188
 189         DECLARE("R_CS",         offsetof(struct i386_saved_state *, cs));
 190         DECLARE("R_SS",         offsetof(struct i386_saved_state *, ss));
 191         DECLARE("R_UESP",       offsetof(struct i386_saved_state *, uesp));
 192         DECLARE("R_EBP",        offsetof(struct i386_saved_state *, ebp));
 193         DECLARE("R_EAX",        offsetof(struct i386_saved_state *, eax));
 194         DECLARE("R_EBX",        offsetof(struct i386_saved_state *, ebx));
 195         DECLARE("R_ECX",        offsetof(struct i386_saved_state *, ecx));
 196         DECLARE("R_EDX",        offsetof(struct i386_saved_state *, edx));
 197         DECLARE("R_ESI",        offsetof(struct i386_saved_state *, esi));
 198         DECLARE("R_EDI",        offsetof(struct i386_saved_state *, edi));
 199         DECLARE("R_TRAPNO",     offsetof(struct i386_saved_state *, trapno));
 200         DECLARE("R_ERR",        offsetof(struct i386_saved_state *, err));
 201         DECLARE("R_EFLAGS",     offsetof(struct i386_saved_state *, efl));
 202         DECLARE("R_EIP",        offsetof(struct i386_saved_state *, eip));
 203         DECLARE("R_CR2",        offsetof(struct i386_saved_state *, cr2));
 204         DECLARE("ISS_SIZE",     sizeof (struct i386_saved_state));
 205
 206         DECLARE("I_ECX",        offsetof(struct i386_interrupt_state *, ecx));
 207         DECLARE("I_EIP",        offsetof(struct i386_interrupt_state *, eip));
 208         DECLARE("I_CS",         offsetof(struct i386_interrupt_state *, cs));
 209         DECLARE("I_EFL",        offsetof(struct i386_interrupt_state *, efl));
 210
 211         DECLARE("NBPG",                 I386_PGBYTES);
 212         DECLARE("VM_MIN_ADDRESS",       VM_MIN_ADDRESS);
 213         DECLARE("VM_MAX_ADDRESS",       VM_MAX_ADDRESS);
 214         DECLARE("KERNELBASE",           VM_MIN_KERNEL_ADDRESS);
 215         DECLARE("LINEAR_KERNELBASE",    LINEAR_KERNEL_ADDRESS);
 216         DECLARE("KERNEL_STACK_SIZE",    KERNEL_STACK_SIZE);
 217
 218         DECLARE("PDESHIFT",     PDESHIFT);
 219         DECLARE("PTESHIFT",     PTESHIFT);
 220         DECLARE("PTEMASK",      PTEMASK);
 221
 222         DECLARE("PTE_PFN",      INTEL_PTE_PFN);
 223         DECLARE("PTE_V",        INTEL_PTE_VALID);
 224         DECLARE("PTE_W",        INTEL_PTE_WRITE);
 225         DECLARE("PTE_INVALID",  ~INTEL_PTE_VALID);
 226
 227         DECLARE("IDTSZ",        IDTSZ);
 228         DECLARE("GDTSZ",        GDTSZ);
 229         DECLARE("LDTSZ",        LDTSZ);
 230
 231         DECLARE("KERNEL_CS",    KERNEL_CS);
 232         DECLARE("KERNEL_DS",    KERNEL_DS);
 233         DECLARE("USER_CS",      USER_CS);
 234         DECLARE("USER_DS",      USER_DS);
 235         DECLARE("KERNEL_TSS",   KERNEL_TSS);
 236         DECLARE("KERNEL_LDT",   KERNEL_LDT);
 237 #if     MACH_KDB
 238         DECLARE("DEBUG_TSS",    DEBUG_TSS);
 239 #endif  /* MACH_KDB */
 240
 241         DECLARE("CPU_DATA",     CPU_DATA);
 242         DECLARE("CPD_ACTIVE_THREAD",
 243                 offsetof(cpu_data_t *, active_thread));
 244 #if     MACH_RT
 245         DECLARE("CPD_PREEMPTION_LEVEL",
 246                 offsetof(cpu_data_t *, preemption_level));
 247 #endif  /* MACH_RT */
 248         DECLARE("CPD_INTERRUPT_LEVEL",
 249                 offsetof(cpu_data_t *, interrupt_level));
 250         DECLARE("CPD_SIMPLE_LOCK_COUNT",
 251                 offsetof(cpu_data_t *,simple_lock_count));
 252         DECLARE("CPD_CPU_NUMBER",
 253                 offsetof(cpu_data_t *,cpu_number));
 254         DECLARE("CPD_CPU_PHYS_NUMBER",
 255                 offsetof(cpu_data_t *,cpu_phys_number));
 256         DECLARE("CPD_CPU_STATUS",
 257                 offsetof(cpu_data_t *,cpu_status));
 258         DECLARE("CPD_MCOUNT_OFF",
 259                 offsetof(cpu_data_t *,mcount_off));
 260
 261         DECLARE("PTES_PER_PAGE",        NPTES);
 262         DECLARE("INTEL_PTE_KERNEL",     INTEL_PTE_VALID|INTEL_PTE_WRITE);
 263
 264         DECLARE("KERNELBASEPDE",
 265                 (LINEAR_KERNEL_ADDRESS >> PDESHIFT) *
 266                 sizeof(pt_entry_t));
 267
 268         DECLARE("TSS_ESP0",     offsetof(struct i386_tss *, esp0));
 269         DECLARE("TSS_SS0",      offsetof(struct i386_tss *, ss0));
 270         DECLARE("TSS_LDT",      offsetof(struct i386_tss *, ldt));
 271         DECLARE("TSS_PDBR",     offsetof(struct i386_tss *, cr3));
 272         DECLARE("TSS_LINK",     offsetof(struct i386_tss *, back_link));
 273
 274         DECLARE("K_TASK_GATE",  ACC_P|ACC_PL_K|ACC_TASK_GATE);
 275         DECLARE("K_TRAP_GATE",  ACC_P|ACC_PL_K|ACC_TRAP_GATE);
 276         DECLARE("U_TRAP_GATE",  ACC_P|ACC_PL_U|ACC_TRAP_GATE);
 277         DECLARE("K_INTR_GATE",  ACC_P|ACC_PL_K|ACC_INTR_GATE);
 278         DECLARE("K_TSS",        ACC_P|ACC_PL_K|ACC_TSS);
 279
 280         /*
 281          *      usimple_lock fields
 282          */
 283         DECLARE("USL_INTERLOCK",        offsetof(usimple_lock_t, interlock));
 284
 285         DECLARE("INTSTACK_SIZE",        INTSTACK_SIZE);
 286 #if     NCPUS > 1
 287         DECLARE("MP_GDT",          offsetof(struct mp_desc_table *, gdt[0]));
 288         DECLARE("MP_IDT",          offsetof(struct mp_desc_table *, idt[0]));
 289 #endif  /* NCPUS > 1 */
 290 #if     !STAT_TIME
 291         DECLARE("LOW_BITS",        offsetof(struct timer *, low_bits));
 292         DECLARE("HIGH_BITS",       offsetof(struct timer *, high_bits));
 293         DECLARE("HIGH_BITS_CHECK", offsetof(struct timer *, high_bits_check));
 294         DECLARE("TIMER_HIGH_UNIT", TIMER_HIGH_UNIT);
 295         DECLARE("TH_SYS_TIMER",    offsetof(struct timer *, system_timer));
 296         DECLARE("TH_USER_TIMER",   offsetof(struct timer *, user_timer));
 297 #endif
 298
 299         return (0);
 300 }
 301
 302
 303 /* Dummy to keep linker quiet */
 304 void
 305 kernel_preempt_check(void)
 306 {
 307 }