root/arch/sparc/kernel/head.S

/* */

   1 /* $Id: head.S,v 1.56 1996/04/04 16:30:22 tridge Exp $
   2  * head.S: The initial boot code for the Sparc port of Linux.
   3  *
   4  * Copyright (C) 1995 David S. Miller (davem@caip.rutgers.edu)
   5  * Copyright (C) 1995 Peter Zaitcev   (Zaitcev@ipmce.su)
   6  */
   7 
   8 #include <linux/version.h>
   9 #include <linux/config.h>
  10 
  11 #include <asm/cprefix.h>
  12 #include <asm/head.h>
  13 #include <asm/asi.h>
  14 #include <asm/contregs.h>
  15 #include <asm/ptrace.h>
  16 #include <asm/psr.h>
  17 #include <asm/page.h>
  18 #include <asm/kdebug.h>
  19 #include <asm/winmacro.h>
  20 
  21         .data
  22 /* 
  23  * The following are used with the prom_vector node-ops to figure out
  24  * the cpu-type 
  25  */
  26 
  27         .align 4
  28         .globl  C_LABEL(cputyp)
  29 C_LABEL(cputyp):
  30         .word   1
  31 
  32         .align 4
  33         .globl C_LABEL(cputypval)
  34 C_LABEL(cputypval):
  35         .asciz "sun4c"
  36         .ascii "     "
  37 
  38 C_LABEL(cputypvalend):
  39 C_LABEL(cputypvallen) = C_LABEL(cputypvar) - C_LABEL(cputypval)
  40 
  41         .align 4
  42 /*
  43  * Sun people can't spell worth damn. "compatability" indeed.
  44  * At least we *know* we can't spell, and use a spell-checker.
  45  */
  46 
  47 /* Uh, actually Linus it is I who cannot spell. Too much murky
  48  * Sparc assembly will do this to ya.
  49  */
  50 C_LABEL(cputypvar):
  51         .asciz "compatability"
  52 
  53 /* Tested on SS-5, SS-10. Probably someone at Sun applied a spell-checker. */
  54         .align 4
  55 C_LABEL(cputypvar_sun4m):
  56         .asciz "compatible"
  57 
  58         .align 4
  59 sun4_notsup:
  60         .asciz  "Sparc-Linux sun4 support not implemented yet\n\n"
  61         .align 4
  62 
  63 sun4d_notsup:
  64         .asciz  "Sparc-Linux sun4d support does not exist\n\n"
  65         .align 4
  66 
  67 sun4e_notsup:
  68         .asciz  "Sparc-Linux sun4e support does not exist\n\n"
  69         .align 4
  70 
  71 sun4u_notsup:
  72         .asciz  "Sparc-Linux sun4u support does not exist\n\n"
  73         .align 4
  74 
  75         /* The Sparc trap table, bootloader gives us control at _start. */
  76         .text
  77         .globl  start, _stext, _start, __stext
  78         .globl  C_LABEL(trapbase)
  79 _start:   /* danger danger */
  80 __stext:
  81 _stext:
  82 start:
  83 C_LABEL(trapbase):
  84 #ifdef __SMP__
  85 C_LABEL(trapbase_cpu0):
  86 #endif
  87 /* We get control passed to us here at t_zero. */
  88 t_zero: b gokernel; nop; nop; nop;
  89 t_tflt: SPARC_TFAULT                        /* Inst. Access Exception        */
  90 t_bins: TRAP_ENTRY(0x2, bad_instruction)    /* Illegal Instruction           */
  91 t_pins: TRAP_ENTRY(0x3, priv_instruction)   /* Privileged Instruction        */
  92 t_fpd:  TRAP_ENTRY(0x4, fpd_trap_handler)   /* Floating Point Disabled       */
  93 t_wovf: WINDOW_SPILL                        /* Window Overflow               */
  94 t_wunf: WINDOW_FILL                         /* Window Underflow              */
  95 t_mna:  TRAP_ENTRY(0x7, mna_handler)        /* Memory Address Not Aligned    */
  96 t_fpe:  TRAP_ENTRY(0x8, fpe_trap_handler)   /* Floating Point Exception      */
  97 t_dflt: SPARC_DFAULT                        /* Data Miss Exception           */
  98 t_tio:  TRAP_ENTRY(0xa, do_tag_overflow)    /* Tagged Instruction Ovrflw     */
  99 t_wpt:  TRAP_ENTRY(0xb, do_watchpoint)      /* Watchpoint Detected           */
 100 t_badc: BAD_TRAP(0xc) BAD_TRAP(0xd) BAD_TRAP(0xe) BAD_TRAP(0xf) BAD_TRAP(0x10)
 101 t_irq1: TRAP_ENTRY_INTERRUPT(1)             /* IRQ Software/SBUS Level 1     */
 102 t_irq2: TRAP_ENTRY_INTERRUPT(2)             /* IRQ SBUS Level 2              */
 103 t_irq3: TRAP_ENTRY_INTERRUPT(3)             /* IRQ SCSI/DMA/SBUS Level 3     */
 104 t_irq4: TRAP_ENTRY_INTERRUPT(4)             /* IRQ Software Level 4          */
 105 t_irq5: TRAP_ENTRY_INTERRUPT(5)             /* IRQ SBUS/Ethernet Level 5     */
 106 t_irq6: TRAP_ENTRY_INTERRUPT(6)             /* IRQ Software Level 6          */
 107 t_irq7: TRAP_ENTRY_INTERRUPT(7)             /* IRQ Video/SBUS Level 5        */
 108 t_irq8: TRAP_ENTRY_INTERRUPT(8)             /* IRQ SBUS Level 6              */
 109 t_irq9: TRAP_ENTRY_INTERRUPT(9)             /* IRQ SBUS Level 7              */
 110 t_irq10:TRAP_ENTRY_INTERRUPT(10)            /* IRQ Timer #1 (one we use)     */
 111 t_irq11:TRAP_ENTRY_INTERRUPT(11)            /* IRQ Floppy Intr.              */
 112 t_irq12:TRAP_ENTRY_INTERRUPT(12)            /* IRQ Zilog serial chip         */
 113 t_irq13:TRAP_ENTRY_INTERRUPT(13)            /* IRQ Audio Intr.               */
 114 t_irq14:TRAP_ENTRY_INTERRUPT(14)            /* IRQ Timer #2                  */
 115 #ifndef __SMP__
 116 t_nmi:  NMI_TRAP                            /* Level 15 (NMI)                */
 117 #else
 118         TRAP_ENTRY(0x1f, linux_trap_ipi15_sun4m)
 119 #endif
 120 t_racc: TRAP_ENTRY(0x20, do_reg_access)     /* General Register Access Error */
 121 t_iacce:BAD_TRAP(0x21)                      /* Instr Access Error            */
 122 t_bad22:BAD_TRAP(0x22) BAD_TRAP(0x23)
 123 t_cpdis:TRAP_ENTRY(0x24, do_cp_disabled)    /* Co-Processor Disabled         */
 124 t_uflsh:TRAP_ENTRY(0x25, do_bad_flush)      /* Unimplemented FLUSH inst.     */
 125 t_bad26:BAD_TRAP(0x26) BAD_TRAP(0x27)
 126 t_cpexc:TRAP_ENTRY(0x28, do_cp_exception)   /* Co-Processor Exception        */
 127 t_dacce:SPARC_DFAULT                        /* Data Access Error             */
 128 t_hwdz: TRAP_ENTRY(0x2a, do_hw_divzero)     /* Division by zero, you lose... */
 129 t_dserr:BAD_TRAP(0x2b)                      /* Data Store Error              */
 130 t_daccm:BAD_TRAP(0x2c)                      /* Data Access MMU-Miss          */
 131 t_bad2d:BAD_TRAP(0x2d) BAD_TRAP(0x2e) BAD_TRAP(0x2f) BAD_TRAP(0x30) BAD_TRAP(0x31)
 132 t_bad32:BAD_TRAP(0x32) BAD_TRAP(0x33) BAD_TRAP(0x34) BAD_TRAP(0x35) BAD_TRAP(0x36)
 133 t_bad37:BAD_TRAP(0x37) BAD_TRAP(0x38) BAD_TRAP(0x39) BAD_TRAP(0x3a) BAD_TRAP(0x3b)
 134 t_iaccm:BAD_TRAP(0x3c)                      /* Instr Access MMU-Miss         */
 135 t_bad3d:BAD_TRAP(0x3d) BAD_TRAP(0x3e) BAD_TRAP(0x3f) BAD_TRAP(0x40) BAD_TRAP(0x41)
 136 t_bad42:BAD_TRAP(0x42) BAD_TRAP(0x43) BAD_TRAP(0x44) BAD_TRAP(0x45) BAD_TRAP(0x46)
 137 t_bad47:BAD_TRAP(0x47) BAD_TRAP(0x48) BAD_TRAP(0x49) BAD_TRAP(0x4a) BAD_TRAP(0x4b)
 138 t_bad4c:BAD_TRAP(0x4c) BAD_TRAP(0x4d) BAD_TRAP(0x4e) BAD_TRAP(0x4f) BAD_TRAP(0x50)
 139 t_bad51:BAD_TRAP(0x51) BAD_TRAP(0x52) BAD_TRAP(0x53) BAD_TRAP(0x54) BAD_TRAP(0x55)
 140 t_bad56:BAD_TRAP(0x56) BAD_TRAP(0x57) BAD_TRAP(0x58) BAD_TRAP(0x59) BAD_TRAP(0x5a)
 141 t_bad5b:BAD_TRAP(0x5b) BAD_TRAP(0x5c) BAD_TRAP(0x5d) BAD_TRAP(0x5e) BAD_TRAP(0x5f)
 142 t_bad60:BAD_TRAP(0x60) BAD_TRAP(0x61) BAD_TRAP(0x62) BAD_TRAP(0x63) BAD_TRAP(0x64)
 143 t_bad65:BAD_TRAP(0x65) BAD_TRAP(0x66) BAD_TRAP(0x67) BAD_TRAP(0x68) BAD_TRAP(0x69)
 144 t_bad6a:BAD_TRAP(0x6a) BAD_TRAP(0x6b) BAD_TRAP(0x6c) BAD_TRAP(0x6d) BAD_TRAP(0x6e)
 145 t_bad6f:BAD_TRAP(0x6f) BAD_TRAP(0x70) BAD_TRAP(0x71) BAD_TRAP(0x72) BAD_TRAP(0x73)
 146 t_bad74:BAD_TRAP(0x74) BAD_TRAP(0x75) BAD_TRAP(0x76) BAD_TRAP(0x77) BAD_TRAP(0x78)
 147 t_bad79:BAD_TRAP(0x79) BAD_TRAP(0x7a) BAD_TRAP(0x7b) BAD_TRAP(0x7c) BAD_TRAP(0x7d)
 148 t_bad7e:BAD_TRAP(0x7e) BAD_TRAP(0x7f)
 149 t_sunos:SUNOS_SYSCALL_TRAP                  /* SunOS System Call             */
 150 t_sbkpt:BAD_TRAP(0x81)                      /* Software Breakpoint/KGDB      */
 151 t_divz: BAD_TRAP(0x82)                      /* Divide by zero trap           */
 152 t_flwin:TRAP_ENTRY(0x83, do_flush_windows)  /* Flush Windows Trap            */
 153 t_clwin:BAD_TRAP(0x84)                      /* Clean Windows Trap            */
 154 t_rchk: BAD_TRAP(0x85)                      /* Range Check                   */
 155 t_funal:BAD_TRAP(0x86)                      /* Fix Unaligned Access Trap     */
 156 t_iovf: BAD_TRAP(0x87)                      /* Integer Overflow Trap         */
 157 t_slowl:SOLARIS_SYSCALL_TRAP                /* Slowaris System Call          */
 158 t_netbs:NETBSD_SYSCALL_TRAP                 /* Net-B.S. System Call          */
 159 t_bad8a:BAD_TRAP(0x8a) BAD_TRAP(0x8b) BAD_TRAP(0x8c) BAD_TRAP(0x8d) BAD_TRAP(0x8e)
 160 t_bad8f:BAD_TRAP(0x8f)
 161 t_linux:LINUX_SYSCALL_TRAP                  /* Linux System Call             */
 162 t_bad91:BAD_TRAP(0x91) BAD_TRAP(0x92) BAD_TRAP(0x93) BAD_TRAP(0x94) BAD_TRAP(0x95)
 163 t_bad96:BAD_TRAP(0x96) BAD_TRAP(0x97) BAD_TRAP(0x98) BAD_TRAP(0x99) BAD_TRAP(0x9a)
 164 t_bad9b:BAD_TRAP(0x9b) BAD_TRAP(0x9c) BAD_TRAP(0x9d) BAD_TRAP(0x9e) BAD_TRAP(0x9f)
 165 t_getcc:GETCC_TRAP                          /* Get Condition Codes           */
 166 t_setcc:SETCC_TRAP                          /* Set Condition Codes           */
 167 t_bada2:BAD_TRAP(0xa2) BAD_TRAP(0xa3) BAD_TRAP(0xa4) BAD_TRAP(0xa5) BAD_TRAP(0xa6)
 168 t_bada7:BAD_TRAP(0xa7) BAD_TRAP(0xa8) BAD_TRAP(0xa9) BAD_TRAP(0xaa) BAD_TRAP(0xab)
 169 t_badac:BAD_TRAP(0xac) BAD_TRAP(0xad) BAD_TRAP(0xae) BAD_TRAP(0xaf) BAD_TRAP(0xb0)
 170 t_badb1:BAD_TRAP(0xb1) BAD_TRAP(0xb2) BAD_TRAP(0xb3) BAD_TRAP(0xb4) BAD_TRAP(0xb5)
 171 t_badb6:BAD_TRAP(0xb6) BAD_TRAP(0xb7) BAD_TRAP(0xb8) BAD_TRAP(0xb9) BAD_TRAP(0xba)
 172 t_badbb:BAD_TRAP(0xbb) BAD_TRAP(0xbc) BAD_TRAP(0xbd) BAD_TRAP(0xbe) BAD_TRAP(0xbf)
 173 t_badc0:BAD_TRAP(0xc0) BAD_TRAP(0xc1) BAD_TRAP(0xc2) BAD_TRAP(0xc3) BAD_TRAP(0xc4)
 174 t_badc5:BAD_TRAP(0xc5) BAD_TRAP(0xc6) BAD_TRAP(0xc7) BAD_TRAP(0xc8) BAD_TRAP(0xc9)
 175 t_badca:BAD_TRAP(0xca) BAD_TRAP(0xcb) BAD_TRAP(0xcc) BAD_TRAP(0xcd) BAD_TRAP(0xce)
 176 t_badcf:BAD_TRAP(0xcf) BAD_TRAP(0xd0) BAD_TRAP(0xd1) BAD_TRAP(0xd2) BAD_TRAP(0xd3)
 177 t_badd4:BAD_TRAP(0xd4) BAD_TRAP(0xd5) BAD_TRAP(0xd6) BAD_TRAP(0xd7) BAD_TRAP(0xd8)
 178 t_badd9:BAD_TRAP(0xd9) BAD_TRAP(0xda) BAD_TRAP(0xdb) BAD_TRAP(0xdc) BAD_TRAP(0xdd)
 179 t_badde:BAD_TRAP(0xde) BAD_TRAP(0xdf) BAD_TRAP(0xe0) BAD_TRAP(0xe1) BAD_TRAP(0xe2)
 180 t_bade3:BAD_TRAP(0xe3) BAD_TRAP(0xe4) BAD_TRAP(0xe5) BAD_TRAP(0xe6) BAD_TRAP(0xe7)
 181 t_bade8:BAD_TRAP(0xe8) BAD_TRAP(0xe9) BAD_TRAP(0xea) BAD_TRAP(0xeb) BAD_TRAP(0xec)
 182 t_baded:BAD_TRAP(0xed) BAD_TRAP(0xee) BAD_TRAP(0xef) BAD_TRAP(0xf0) BAD_TRAP(0xf1)
 183 t_badf2:BAD_TRAP(0xf2) BAD_TRAP(0xf3) BAD_TRAP(0xf4) BAD_TRAP(0xf5) BAD_TRAP(0xf6)
 184 t_badf7:BAD_TRAP(0xf7) BAD_TRAP(0xf8) BAD_TRAP(0xf9) BAD_TRAP(0xfa) BAD_TRAP(0xfb)
 185 t_badfc:BAD_TRAP(0xfc) BAD_TRAP(0xfd)
 186 dbtrap: BAD_TRAP(0xfe)                      /* Debugger/PROM breakpoint #1   */
 187 dbtrap2:BAD_TRAP(0xff)                      /* Debugger/PROM breakpoint #2   */ 
 188 
 189         .globl  C_LABEL(end_traptable)
 190 C_LABEL(end_traptable):
 191 
 192 #ifdef __SMP__
 193         /* Trap tables for the other cpus. */
 194         .globl  C_LABEL(trapbase_cpu1), C_LABEL(trapbase_cpu2), C_LABEL(trapbase_cpu3)
 195 C_LABEL(trapbase_cpu1):
 196         BAD_TRAP(0x0) SRMMU_TFAULT TRAP_ENTRY(0x2, bad_instruction)
 197         TRAP_ENTRY(0x3, priv_instruction) TRAP_ENTRY(0x4, fpd_trap_handler)
 198         WINDOW_SPILL WINDOW_FILL TRAP_ENTRY(0x7, mna_handler)
 199         TRAP_ENTRY(0x8, fpe_trap_handler) SRMMU_DFAULT
 200         TRAP_ENTRY(0xa, do_tag_overflow) TRAP_ENTRY(0xb, do_watchpoint)
 201         BAD_TRAP(0xc) BAD_TRAP(0xd) BAD_TRAP(0xe) BAD_TRAP(0xf) BAD_TRAP(0x10)
 202         TRAP_ENTRY_INTERRUPT(1) TRAP_ENTRY_INTERRUPT(2)
 203         TRAP_ENTRY_INTERRUPT(3) TRAP_ENTRY_INTERRUPT(4)
 204         TRAP_ENTRY_INTERRUPT(5) TRAP_ENTRY_INTERRUPT(6)
 205         TRAP_ENTRY_INTERRUPT(7) TRAP_ENTRY_INTERRUPT(8)
 206         TRAP_ENTRY_INTERRUPT(9) TRAP_ENTRY_INTERRUPT(10)
 207         TRAP_ENTRY_INTERRUPT(11) TRAP_ENTRY_INTERRUPT(12)
 208         TRAP_ENTRY_INTERRUPT(13) TRAP_ENTRY_INTERRUPT(14)
 209         TRAP_ENTRY(0x1f, linux_trap_ipi15_sun4m)
 210         TRAP_ENTRY(0x20, do_reg_access) BAD_TRAP(0x21) BAD_TRAP(0x22)
 211         BAD_TRAP(0x23) TRAP_ENTRY(0x24, do_cp_disabled) TRAP_ENTRY(0x25, do_bad_flush)
 212         BAD_TRAP(0x26) BAD_TRAP(0x27) TRAP_ENTRY(0x28, do_cp_exception)
 213         SRMMU_DFAULT TRAP_ENTRY(0x2a, do_hw_divzero) BAD_TRAP(0x2b) BAD_TRAP(0x2c)
 214         BAD_TRAP(0x2d) BAD_TRAP(0x2e) BAD_TRAP(0x2f) BAD_TRAP(0x30) BAD_TRAP(0x31)
 215         BAD_TRAP(0x32) BAD_TRAP(0x33) BAD_TRAP(0x34) BAD_TRAP(0x35) BAD_TRAP(0x36)
 216         BAD_TRAP(0x37) BAD_TRAP(0x38) BAD_TRAP(0x39) BAD_TRAP(0x3a) BAD_TRAP(0x3b)
 217         BAD_TRAP(0x3c) BAD_TRAP(0x3d) BAD_TRAP(0x3e) BAD_TRAP(0x3f) BAD_TRAP(0x40)
 218         BAD_TRAP(0x41) BAD_TRAP(0x42) BAD_TRAP(0x43) BAD_TRAP(0x44) BAD_TRAP(0x45)
 219         BAD_TRAP(0x46) BAD_TRAP(0x47) BAD_TRAP(0x48) BAD_TRAP(0x49) BAD_TRAP(0x4a)
 220         BAD_TRAP(0x4b) BAD_TRAP(0x4c) BAD_TRAP(0x4d) BAD_TRAP(0x4e) BAD_TRAP(0x4f)
 221         BAD_TRAP(0x50)
 222         BAD_TRAP(0x51) BAD_TRAP(0x52) BAD_TRAP(0x53) BAD_TRAP(0x54) BAD_TRAP(0x55)
 223         BAD_TRAP(0x56) BAD_TRAP(0x57) BAD_TRAP(0x58) BAD_TRAP(0x59) BAD_TRAP(0x5a)
 224         BAD_TRAP(0x5b) BAD_TRAP(0x5c) BAD_TRAP(0x5d) BAD_TRAP(0x5e) BAD_TRAP(0x5f)
 225         BAD_TRAP(0x60) BAD_TRAP(0x61) BAD_TRAP(0x62) BAD_TRAP(0x63) BAD_TRAP(0x64)
 226         BAD_TRAP(0x65) BAD_TRAP(0x66) BAD_TRAP(0x67) BAD_TRAP(0x68) BAD_TRAP(0x69)
 227         BAD_TRAP(0x6a) BAD_TRAP(0x6b) BAD_TRAP(0x6c) BAD_TRAP(0x6d) BAD_TRAP(0x6e)
 228         BAD_TRAP(0x6f) BAD_TRAP(0x70) BAD_TRAP(0x71) BAD_TRAP(0x72) BAD_TRAP(0x73)
 229         BAD_TRAP(0x74) BAD_TRAP(0x75) BAD_TRAP(0x76) BAD_TRAP(0x77) BAD_TRAP(0x78)
 230         BAD_TRAP(0x79) BAD_TRAP(0x7a) BAD_TRAP(0x7b) BAD_TRAP(0x7c) BAD_TRAP(0x7d)
 231         BAD_TRAP(0x7e) BAD_TRAP(0x7f)
 232         SUNOS_SYSCALL_TRAP BAD_TRAP(0x81) BAD_TRAP(0x82)
 233         TRAP_ENTRY(0x83, do_flush_windows) BAD_TRAP(0x84) BAD_TRAP(0x85)
 234         BAD_TRAP(0x86) BAD_TRAP(0x87) SOLARIS_SYSCALL_TRAP
 235         NETBSD_SYSCALL_TRAP BAD_TRAP(0x8a) BAD_TRAP(0x8b) BAD_TRAP(0x8c)
 236         BAD_TRAP(0x8d) BAD_TRAP(0x8e) BAD_TRAP(0x8f)
 237         LINUX_SYSCALL_TRAP BAD_TRAP(0x91) BAD_TRAP(0x92) BAD_TRAP(0x93) BAD_TRAP(0x94)
 238         BAD_TRAP(0x95) BAD_TRAP(0x96) BAD_TRAP(0x97) BAD_TRAP(0x98) BAD_TRAP(0x99)
 239         BAD_TRAP(0x9a) BAD_TRAP(0x9b) BAD_TRAP(0x9c) BAD_TRAP(0x9d) BAD_TRAP(0x9e)
 240         BAD_TRAP(0x9f) GETCC_TRAP SETCC_TRAP
 241         BAD_TRAP(0xa2) BAD_TRAP(0xa3) BAD_TRAP(0xa4) BAD_TRAP(0xa5) BAD_TRAP(0xa6)
 242         BAD_TRAP(0xa7) BAD_TRAP(0xa8) BAD_TRAP(0xa9) BAD_TRAP(0xaa) BAD_TRAP(0xab)
 243         BAD_TRAP(0xac) BAD_TRAP(0xad) BAD_TRAP(0xae) BAD_TRAP(0xaf) BAD_TRAP(0xb0)
 244         BAD_TRAP(0xb1) BAD_TRAP(0xb2) BAD_TRAP(0xb3) BAD_TRAP(0xb4) BAD_TRAP(0xb5)
 245         BAD_TRAP(0xb6) BAD_TRAP(0xb7) BAD_TRAP(0xb8) BAD_TRAP(0xb9) BAD_TRAP(0xba)
 246         BAD_TRAP(0xbb) BAD_TRAP(0xbc) BAD_TRAP(0xbd) BAD_TRAP(0xbe) BAD_TRAP(0xbf)
 247         BAD_TRAP(0xc0) BAD_TRAP(0xc1) BAD_TRAP(0xc2) BAD_TRAP(0xc3) BAD_TRAP(0xc4)
 248         BAD_TRAP(0xc5) BAD_TRAP(0xc6) BAD_TRAP(0xc7) BAD_TRAP(0xc8) BAD_TRAP(0xc9)
 249         BAD_TRAP(0xca) BAD_TRAP(0xcb) BAD_TRAP(0xcc) BAD_TRAP(0xcd) BAD_TRAP(0xce)
 250         BAD_TRAP(0xcf) BAD_TRAP(0xd0) BAD_TRAP(0xd1) BAD_TRAP(0xd2) BAD_TRAP(0xd3)
 251         BAD_TRAP(0xd4) BAD_TRAP(0xd5) BAD_TRAP(0xd6) BAD_TRAP(0xd7) BAD_TRAP(0xd8)
 252         BAD_TRAP(0xd9) BAD_TRAP(0xda) BAD_TRAP(0xdb) BAD_TRAP(0xdc) BAD_TRAP(0xdd)
 253         BAD_TRAP(0xde) BAD_TRAP(0xdf) BAD_TRAP(0xe0) BAD_TRAP(0xe1) BAD_TRAP(0xe2)
 254         BAD_TRAP(0xe3) BAD_TRAP(0xe4) BAD_TRAP(0xe5) BAD_TRAP(0xe6) BAD_TRAP(0xe7)
 255         BAD_TRAP(0xe8) BAD_TRAP(0xe9) BAD_TRAP(0xea) BAD_TRAP(0xeb) BAD_TRAP(0xec)
 256         BAD_TRAP(0xed) BAD_TRAP(0xee) BAD_TRAP(0xef) BAD_TRAP(0xf0) BAD_TRAP(0xf1)
 257         BAD_TRAP(0xf2) BAD_TRAP(0xf3) BAD_TRAP(0xf4) BAD_TRAP(0xf5) BAD_TRAP(0xf6)
 258         BAD_TRAP(0xf7) BAD_TRAP(0xf8) BAD_TRAP(0xf9) BAD_TRAP(0xfa) BAD_TRAP(0xfb)
 259         BAD_TRAP(0xfc) BAD_TRAP(0xfd) BAD_TRAP(0xfe) BAD_TRAP(0xff)
 260 
 261 C_LABEL(trapbase_cpu2):
 262         BAD_TRAP(0x0) SRMMU_TFAULT TRAP_ENTRY(0x2, bad_instruction)
 263         TRAP_ENTRY(0x3, priv_instruction) TRAP_ENTRY(0x4, fpd_trap_handler)
 264         WINDOW_SPILL WINDOW_FILL TRAP_ENTRY(0x7, mna_handler)
 265         TRAP_ENTRY(0x8, fpe_trap_handler) SRMMU_DFAULT
 266         TRAP_ENTRY(0xa, do_tag_overflow) TRAP_ENTRY(0xb, do_watchpoint)
 267         BAD_TRAP(0xc) BAD_TRAP(0xd) BAD_TRAP(0xe) BAD_TRAP(0xf) BAD_TRAP(0x10)
 268         TRAP_ENTRY_INTERRUPT(1) TRAP_ENTRY_INTERRUPT(2)
 269         TRAP_ENTRY_INTERRUPT(3) TRAP_ENTRY_INTERRUPT(4)
 270         TRAP_ENTRY_INTERRUPT(5) TRAP_ENTRY_INTERRUPT(6)
 271         TRAP_ENTRY_INTERRUPT(7) TRAP_ENTRY_INTERRUPT(8)
 272         TRAP_ENTRY_INTERRUPT(9) TRAP_ENTRY_INTERRUPT(10)
 273         TRAP_ENTRY_INTERRUPT(11) TRAP_ENTRY_INTERRUPT(12)
 274         TRAP_ENTRY_INTERRUPT(13) TRAP_ENTRY_INTERRUPT(14)
 275         TRAP_ENTRY(0x1f, linux_trap_ipi15_sun4m)
 276         TRAP_ENTRY(0x20, do_reg_access) BAD_TRAP(0x21) BAD_TRAP(0x22)
 277         BAD_TRAP(0x23) TRAP_ENTRY(0x24, do_cp_disabled) TRAP_ENTRY(0x25, do_bad_flush)
 278         BAD_TRAP(0x26) BAD_TRAP(0x27) TRAP_ENTRY(0x28, do_cp_exception)
 279         SRMMU_DFAULT TRAP_ENTRY(0x2a, do_hw_divzero) BAD_TRAP(0x2b) BAD_TRAP(0x2c)
 280         BAD_TRAP(0x2d) BAD_TRAP(0x2e) BAD_TRAP(0x2f) BAD_TRAP(0x30) BAD_TRAP(0x31)
 281         BAD_TRAP(0x32) BAD_TRAP(0x33) BAD_TRAP(0x34) BAD_TRAP(0x35) BAD_TRAP(0x36)
 282         BAD_TRAP(0x37) BAD_TRAP(0x38) BAD_TRAP(0x39) BAD_TRAP(0x3a) BAD_TRAP(0x3b)
 283         BAD_TRAP(0x3c) BAD_TRAP(0x3d) BAD_TRAP(0x3e) BAD_TRAP(0x3f) BAD_TRAP(0x40)
 284         BAD_TRAP(0x41) BAD_TRAP(0x42) BAD_TRAP(0x43) BAD_TRAP(0x44) BAD_TRAP(0x45)
 285         BAD_TRAP(0x46) BAD_TRAP(0x47) BAD_TRAP(0x48) BAD_TRAP(0x49) BAD_TRAP(0x4a)
 286         BAD_TRAP(0x4b) BAD_TRAP(0x4c) BAD_TRAP(0x4d) BAD_TRAP(0x4e) BAD_TRAP(0x4f)
 287         BAD_TRAP(0x50)
 288         BAD_TRAP(0x51) BAD_TRAP(0x52) BAD_TRAP(0x53) BAD_TRAP(0x54) BAD_TRAP(0x55)
 289         BAD_TRAP(0x56) BAD_TRAP(0x57) BAD_TRAP(0x58) BAD_TRAP(0x59) BAD_TRAP(0x5a)
 290         BAD_TRAP(0x5b) BAD_TRAP(0x5c) BAD_TRAP(0x5d) BAD_TRAP(0x5e) BAD_TRAP(0x5f)
 291         BAD_TRAP(0x60) BAD_TRAP(0x61) BAD_TRAP(0x62) BAD_TRAP(0x63) BAD_TRAP(0x64)
 292         BAD_TRAP(0x65) BAD_TRAP(0x66) BAD_TRAP(0x67) BAD_TRAP(0x68) BAD_TRAP(0x69)
 293         BAD_TRAP(0x6a) BAD_TRAP(0x6b) BAD_TRAP(0x6c) BAD_TRAP(0x6d) BAD_TRAP(0x6e)
 294         BAD_TRAP(0x6f) BAD_TRAP(0x70) BAD_TRAP(0x71) BAD_TRAP(0x72) BAD_TRAP(0x73)
 295         BAD_TRAP(0x74) BAD_TRAP(0x75) BAD_TRAP(0x76) BAD_TRAP(0x77) BAD_TRAP(0x78)
 296         BAD_TRAP(0x79) BAD_TRAP(0x7a) BAD_TRAP(0x7b) BAD_TRAP(0x7c) BAD_TRAP(0x7d)
 297         BAD_TRAP(0x7e) BAD_TRAP(0x7f)
 298         SUNOS_SYSCALL_TRAP BAD_TRAP(0x81) BAD_TRAP(0x82)
 299         TRAP_ENTRY(0x83, do_flush_windows) BAD_TRAP(0x84) BAD_TRAP(0x85)
 300         BAD_TRAP(0x86) BAD_TRAP(0x87) SOLARIS_SYSCALL_TRAP
 301         NETBSD_SYSCALL_TRAP BAD_TRAP(0x8a) BAD_TRAP(0x8b) BAD_TRAP(0x8c)
 302         BAD_TRAP(0x8d) BAD_TRAP(0x8e) BAD_TRAP(0x8f)
 303         LINUX_SYSCALL_TRAP BAD_TRAP(0x91) BAD_TRAP(0x92) BAD_TRAP(0x93) BAD_TRAP(0x94)
 304         BAD_TRAP(0x95) BAD_TRAP(0x96) BAD_TRAP(0x97) BAD_TRAP(0x98) BAD_TRAP(0x99)
 305         BAD_TRAP(0x9a) BAD_TRAP(0x9b) BAD_TRAP(0x9c) BAD_TRAP(0x9d) BAD_TRAP(0x9e)
 306         BAD_TRAP(0x9f) GETCC_TRAP SETCC_TRAP
 307         BAD_TRAP(0xa2) BAD_TRAP(0xa3) BAD_TRAP(0xa4) BAD_TRAP(0xa5) BAD_TRAP(0xa6)
 308         BAD_TRAP(0xa7) BAD_TRAP(0xa8) BAD_TRAP(0xa9) BAD_TRAP(0xaa) BAD_TRAP(0xab)
 309         BAD_TRAP(0xac) BAD_TRAP(0xad) BAD_TRAP(0xae) BAD_TRAP(0xaf) BAD_TRAP(0xb0)
 310         BAD_TRAP(0xb1) BAD_TRAP(0xb2) BAD_TRAP(0xb3) BAD_TRAP(0xb4) BAD_TRAP(0xb5)
 311         BAD_TRAP(0xb6) BAD_TRAP(0xb7) BAD_TRAP(0xb8) BAD_TRAP(0xb9) BAD_TRAP(0xba)
 312         BAD_TRAP(0xbb) BAD_TRAP(0xbc) BAD_TRAP(0xbd) BAD_TRAP(0xbe) BAD_TRAP(0xbf)
 313         BAD_TRAP(0xc0) BAD_TRAP(0xc1) BAD_TRAP(0xc2) BAD_TRAP(0xc3) BAD_TRAP(0xc4)
 314         BAD_TRAP(0xc5) BAD_TRAP(0xc6) BAD_TRAP(0xc7) BAD_TRAP(0xc8) BAD_TRAP(0xc9)
 315         BAD_TRAP(0xca) BAD_TRAP(0xcb) BAD_TRAP(0xcc) BAD_TRAP(0xcd) BAD_TRAP(0xce)
 316         BAD_TRAP(0xcf) BAD_TRAP(0xd0) BAD_TRAP(0xd1) BAD_TRAP(0xd2) BAD_TRAP(0xd3)
 317         BAD_TRAP(0xd4) BAD_TRAP(0xd5) BAD_TRAP(0xd6) BAD_TRAP(0xd7) BAD_TRAP(0xd8)
 318         BAD_TRAP(0xd9) BAD_TRAP(0xda) BAD_TRAP(0xdb) BAD_TRAP(0xdc) BAD_TRAP(0xdd)
 319         BAD_TRAP(0xde) BAD_TRAP(0xdf) BAD_TRAP(0xe0) BAD_TRAP(0xe1) BAD_TRAP(0xe2)
 320         BAD_TRAP(0xe3) BAD_TRAP(0xe4) BAD_TRAP(0xe5) BAD_TRAP(0xe6) BAD_TRAP(0xe7)
 321         BAD_TRAP(0xe8) BAD_TRAP(0xe9) BAD_TRAP(0xea) BAD_TRAP(0xeb) BAD_TRAP(0xec)
 322         BAD_TRAP(0xed) BAD_TRAP(0xee) BAD_TRAP(0xef) BAD_TRAP(0xf0) BAD_TRAP(0xf1)
 323         BAD_TRAP(0xf2) BAD_TRAP(0xf3) BAD_TRAP(0xf4) BAD_TRAP(0xf5) BAD_TRAP(0xf6)
 324         BAD_TRAP(0xf7) BAD_TRAP(0xf8) BAD_TRAP(0xf9) BAD_TRAP(0xfa) BAD_TRAP(0xfb)
 325         BAD_TRAP(0xfc) BAD_TRAP(0xfd) BAD_TRAP(0xfe) BAD_TRAP(0xff)
 326 
 327 C_LABEL(trapbase_cpu3):
 328         BAD_TRAP(0x0) SRMMU_TFAULT TRAP_ENTRY(0x2, bad_instruction)
 329         TRAP_ENTRY(0x3, priv_instruction) TRAP_ENTRY(0x4, fpd_trap_handler)
 330         WINDOW_SPILL WINDOW_FILL TRAP_ENTRY(0x7, mna_handler)
 331         TRAP_ENTRY(0x8, fpe_trap_handler) SRMMU_DFAULT
 332         TRAP_ENTRY(0xa, do_tag_overflow) TRAP_ENTRY(0xb, do_watchpoint)
 333         BAD_TRAP(0xc) BAD_TRAP(0xd) BAD_TRAP(0xe) BAD_TRAP(0xf) BAD_TRAP(0x10)
 334         TRAP_ENTRY_INTERRUPT(1) TRAP_ENTRY_INTERRUPT(2)
 335         TRAP_ENTRY_INTERRUPT(3) TRAP_ENTRY_INTERRUPT(4)
 336         TRAP_ENTRY_INTERRUPT(5) TRAP_ENTRY_INTERRUPT(6)
 337         TRAP_ENTRY_INTERRUPT(7) TRAP_ENTRY_INTERRUPT(8)
 338         TRAP_ENTRY_INTERRUPT(9) TRAP_ENTRY_INTERRUPT(10)
 339         TRAP_ENTRY_INTERRUPT(11) TRAP_ENTRY_INTERRUPT(12)
 340         TRAP_ENTRY_INTERRUPT(13) TRAP_ENTRY_INTERRUPT(14)
 341         TRAP_ENTRY(0x1f, linux_trap_ipi15_sun4m)
 342         TRAP_ENTRY(0x20, do_reg_access) BAD_TRAP(0x21) BAD_TRAP(0x22)
 343         BAD_TRAP(0x23) TRAP_ENTRY(0x24, do_cp_disabled) TRAP_ENTRY(0x25, do_bad_flush)
 344         BAD_TRAP(0x26) BAD_TRAP(0x27) TRAP_ENTRY(0x28, do_cp_exception)
 345         SRMMU_DFAULT TRAP_ENTRY(0x2a, do_hw_divzero) BAD_TRAP(0x2b) BAD_TRAP(0x2c)
 346         BAD_TRAP(0x2d) BAD_TRAP(0x2e) BAD_TRAP(0x2f) BAD_TRAP(0x30) BAD_TRAP(0x31)
 347         BAD_TRAP(0x32) BAD_TRAP(0x33) BAD_TRAP(0x34) BAD_TRAP(0x35) BAD_TRAP(0x36)
 348         BAD_TRAP(0x37) BAD_TRAP(0x38) BAD_TRAP(0x39) BAD_TRAP(0x3a) BAD_TRAP(0x3b)
 349         BAD_TRAP(0x3c) BAD_TRAP(0x3d) BAD_TRAP(0x3e) BAD_TRAP(0x3f) BAD_TRAP(0x40)
 350         BAD_TRAP(0x41) BAD_TRAP(0x42) BAD_TRAP(0x43) BAD_TRAP(0x44) BAD_TRAP(0x45)
 351         BAD_TRAP(0x46) BAD_TRAP(0x47) BAD_TRAP(0x48) BAD_TRAP(0x49) BAD_TRAP(0x4a)
 352         BAD_TRAP(0x4b) BAD_TRAP(0x4c) BAD_TRAP(0x4d) BAD_TRAP(0x4e) BAD_TRAP(0x4f)
 353         BAD_TRAP(0x50)
 354         BAD_TRAP(0x51) BAD_TRAP(0x52) BAD_TRAP(0x53) BAD_TRAP(0x54) BAD_TRAP(0x55)
 355         BAD_TRAP(0x56) BAD_TRAP(0x57) BAD_TRAP(0x58) BAD_TRAP(0x59) BAD_TRAP(0x5a)
 356         BAD_TRAP(0x5b) BAD_TRAP(0x5c) BAD_TRAP(0x5d) BAD_TRAP(0x5e) BAD_TRAP(0x5f)
 357         BAD_TRAP(0x60) BAD_TRAP(0x61) BAD_TRAP(0x62) BAD_TRAP(0x63) BAD_TRAP(0x64)
 358         BAD_TRAP(0x65) BAD_TRAP(0x66) BAD_TRAP(0x67) BAD_TRAP(0x68) BAD_TRAP(0x69)
 359         BAD_TRAP(0x6a) BAD_TRAP(0x6b) BAD_TRAP(0x6c) BAD_TRAP(0x6d) BAD_TRAP(0x6e)
 360         BAD_TRAP(0x6f) BAD_TRAP(0x70) BAD_TRAP(0x71) BAD_TRAP(0x72) BAD_TRAP(0x73)
 361         BAD_TRAP(0x74) BAD_TRAP(0x75) BAD_TRAP(0x76) BAD_TRAP(0x77) BAD_TRAP(0x78)
 362         BAD_TRAP(0x79) BAD_TRAP(0x7a) BAD_TRAP(0x7b) BAD_TRAP(0x7c) BAD_TRAP(0x7d)
 363         BAD_TRAP(0x7e) BAD_TRAP(0x7f)
 364         SUNOS_SYSCALL_TRAP BAD_TRAP(0x81) BAD_TRAP(0x82)
 365         TRAP_ENTRY(0x83, do_flush_windows) BAD_TRAP(0x84) BAD_TRAP(0x85)
 366         BAD_TRAP(0x86) BAD_TRAP(0x87) SOLARIS_SYSCALL_TRAP
 367         NETBSD_SYSCALL_TRAP BAD_TRAP(0x8a) BAD_TRAP(0x8b) BAD_TRAP(0x8c)
 368         BAD_TRAP(0x8d) BAD_TRAP(0x8e) BAD_TRAP(0x8f)
 369         LINUX_SYSCALL_TRAP BAD_TRAP(0x91) BAD_TRAP(0x92) BAD_TRAP(0x93) BAD_TRAP(0x94)
 370         BAD_TRAP(0x95) BAD_TRAP(0x96) BAD_TRAP(0x97) BAD_TRAP(0x98) BAD_TRAP(0x99)
 371         BAD_TRAP(0x9a) BAD_TRAP(0x9b) BAD_TRAP(0x9c) BAD_TRAP(0x9d) BAD_TRAP(0x9e)
 372         BAD_TRAP(0x9f) GETCC_TRAP SETCC_TRAP
 373         BAD_TRAP(0xa2) BAD_TRAP(0xa3) BAD_TRAP(0xa4) BAD_TRAP(0xa5) BAD_TRAP(0xa6)
 374         BAD_TRAP(0xa7) BAD_TRAP(0xa8) BAD_TRAP(0xa9) BAD_TRAP(0xaa) BAD_TRAP(0xab)
 375         BAD_TRAP(0xac) BAD_TRAP(0xad) BAD_TRAP(0xae) BAD_TRAP(0xaf) BAD_TRAP(0xb0)
 376         BAD_TRAP(0xb1) BAD_TRAP(0xb2) BAD_TRAP(0xb3) BAD_TRAP(0xb4) BAD_TRAP(0xb5)
 377         BAD_TRAP(0xb6) BAD_TRAP(0xb7) BAD_TRAP(0xb8) BAD_TRAP(0xb9) BAD_TRAP(0xba)
 378         BAD_TRAP(0xbb) BAD_TRAP(0xbc) BAD_TRAP(0xbd) BAD_TRAP(0xbe) BAD_TRAP(0xbf)
 379         BAD_TRAP(0xc0) BAD_TRAP(0xc1) BAD_TRAP(0xc2) BAD_TRAP(0xc3) BAD_TRAP(0xc4)
 380         BAD_TRAP(0xc5) BAD_TRAP(0xc6) BAD_TRAP(0xc7) BAD_TRAP(0xc8) BAD_TRAP(0xc9)
 381         BAD_TRAP(0xca) BAD_TRAP(0xcb) BAD_TRAP(0xcc) BAD_TRAP(0xcd) BAD_TRAP(0xce)
 382         BAD_TRAP(0xcf) BAD_TRAP(0xd0) BAD_TRAP(0xd1) BAD_TRAP(0xd2) BAD_TRAP(0xd3)
 383         BAD_TRAP(0xd4) BAD_TRAP(0xd5) BAD_TRAP(0xd6) BAD_TRAP(0xd7) BAD_TRAP(0xd8)
 384         BAD_TRAP(0xd9) BAD_TRAP(0xda) BAD_TRAP(0xdb) BAD_TRAP(0xdc) BAD_TRAP(0xdd)
 385         BAD_TRAP(0xde) BAD_TRAP(0xdf) BAD_TRAP(0xe0) BAD_TRAP(0xe1) BAD_TRAP(0xe2)
 386         BAD_TRAP(0xe3) BAD_TRAP(0xe4) BAD_TRAP(0xe5) BAD_TRAP(0xe6) BAD_TRAP(0xe7)
 387         BAD_TRAP(0xe8) BAD_TRAP(0xe9) BAD_TRAP(0xea) BAD_TRAP(0xeb) BAD_TRAP(0xec)
 388         BAD_TRAP(0xed) BAD_TRAP(0xee) BAD_TRAP(0xef) BAD_TRAP(0xf0) BAD_TRAP(0xf1)
 389         BAD_TRAP(0xf2) BAD_TRAP(0xf3) BAD_TRAP(0xf4) BAD_TRAP(0xf5) BAD_TRAP(0xf6)
 390         BAD_TRAP(0xf7) BAD_TRAP(0xf8) BAD_TRAP(0xf9) BAD_TRAP(0xfa) BAD_TRAP(0xfb)
 391         BAD_TRAP(0xfc) BAD_TRAP(0xfd) BAD_TRAP(0xfe) BAD_TRAP(0xff)
 392 
 393         .globl  C_LABEL(cpu0_stack), C_LABEL(cpu1_stack), C_LABEL(cpu2_stack)
 394         .globl  C_LABEL(cpu3_stack)
 395 C_LABEL(cpu0_stack):                    .skip 0x2000
 396 C_LABEL(cpu1_stack):                    .skip 0x2000
 397 C_LABEL(cpu2_stack):                    .skip 0x2000
 398 C_LABEL(cpu3_stack):                    .skip 0x2000
 399 #endif
 400         .skip 4096
 401 
 402 /* This was the only reasonable way I could think of to properly align
 403  * these page-table data structures.
 404  */
 405         .globl C_LABEL(bootup_user_stack)
 406         .globl C_LABEL(bootup_kernel_stack)
 407         .globl C_LABEL(pg0)
 408         .globl C_LABEL(empty_bad_page)
 409         .globl C_LABEL(empty_bad_page_table)
 410         .globl C_LABEL(empty_zero_page)
 411         .globl C_LABEL(swapper_pg_dir)
 412 C_LABEL(bootup_user_stack):             .skip 0x2000
 413 C_LABEL(bootup_kernel_stack):           .skip 0x2000
 414 C_LABEL(swapper_pg_dir):                .skip 0x1000
 415 C_LABEL(pg0):                           .skip 0x1000
 416 C_LABEL(empty_bad_page):                .skip 0x1000
 417 C_LABEL(empty_bad_page_table):          .skip 0x1000
 418 C_LABEL(empty_zero_page):               .skip 0x1000
 419 
 420 
 421 /* Cool, here we go. Pick up the romvec pointer in %o0 and stash it in
 422  * %g7 and at prom_vector_p. And also quickly check whether we are on
 423  * a v0, v2, or v3 prom.
 424  */
 425 gokernel:
 426                 /* Ok, it's nice to know, as early as possible, if we
 427                  * are already mapped where we expect to be in virtual
 428                  * memory.  The Solaris /boot elf format bootloader
 429                  * will peek into our elf header and load us where
 430                  * we want to be, otherwise we have to re-map.
 431                  *
 432                  * Some boot loaders don't place the jmp'rs address
 433                  * in %o7, so we do a pc-relative call to a local
 434                  * label, then see what %o7 has.
 435                  */
 436 
 437                 mov     %o7, %g4                ! Save %o7
 438 
 439                 /* Jump to it, and pray... */
 440 current_pc:
 441                 call    1f
 442                  nop
 443 
 444 1:
 445                 mov     %o7, %g3
 446 
 447 got_pc:
 448                 mov     %g4, %o7                /* Previous %o7. */
 449         
 450                 mov     %o0, %l0                ! stash away romvec
 451                 mov     %o0, %g7                ! put it here too
 452                 mov     %o1, %l1                ! stash away debug_vec too
 453 
 454                 /* Ok, let's check out our run time program counter. */
 455                 set     current_pc, %g5
 456                 cmp     %g3, %g5
 457                 be      already_mapped
 458                  nop 
 459 
 460                 /* %l6 will hold the offset we have to subtract
 461                  * from absolute symbols in order to access areas
 462                  * in our own image.  If already mapped this is
 463                  * just plain zero, else it is PAGE_OFFSET which is
 464                  * also KERNBASE.
 465                  */
 466                 set     PAGE_OFFSET, %l6
 467                 b       copy_prom_lvl14
 468                  nop
 469 
 470 already_mapped:
 471                 mov     0, %l6
 472 
 473                 /* Copy over the Prom's level 14 clock handler. */
 474 copy_prom_lvl14:
 475 #if 1
 476                 /* DJHR
 477                  * preserve our linked/calculated instructions
 478                  */
 479                 set     C_LABEL(lvl14_save), %g1
 480                 set     t_irq14, %g3
 481                 sub     %g1, %l6, %g1           ! translate to physical
 482                 sub     %g3, %l6, %g3           ! translate to physical
 483                 ldd     [%g3], %g4
 484                 std     %g4, [%g1]
 485                 ldd     [%g3+8], %g4
 486                 std     %g4, [%g1+8]
 487 #endif
 488                 rd      %tbr, %g1
 489                 andn    %g1, 0xfff, %g1         ! proms trap table base
 490                 or      %g0, (0x1e<<4), %g2     ! offset to lvl14 intr
 491                 or      %g1, %g2, %g2
 492                 set     t_irq14, %g3
 493                 sub     %g3, %l6, %g3
 494                 ldd     [%g2], %g4
 495                 std     %g4, [%g3]
 496                 ldd     [%g2 + 0x8], %g4
 497                 std     %g4, [%g3 + 0x8]        ! Copy proms handler
 498 
 499 /* Must determine whether we are on a sun4c MMU, SRMMU, or SUN4/400 MUTANT
 500  * MMU so we can remap ourselves properly.  DONT TOUCH %l0 thru %l5 in these
 501  * remapping routines, we need their values afterwards!
 502  */
 503                 /* Now check whether we are already mapped, if we
 504                  * are we can skip all this garbage coming up.
 505                  */
 506 copy_prom_done:
 507                 cmp     %l6, 0
 508                 be      go_to_highmem           ! this will be a nop then
 509                  nop
 510 
 511                 set     LOAD_ADDR, %g6
 512                 cmp     %g7, %g6
 513                 bne     remap_not_a_sun4        ! This is not a Sun4
 514                  nop
 515 
 516                 or      %g0, 0x1, %g1
 517                 lduba   [%g1] ASI_CONTROL, %g1  ! Only safe to try on Sun4.
 518                 subcc   %g1, 0x24, %g0          ! Is this a mutant Sun4/400???
 519                 be      sun4_mutant_remap       ! Ugh, it is...
 520                  nop
 521 
 522 remap_not_a_sun4:
 523                 lda     [%g0] ASI_M_MMUREGS, %g1 ! same as ASI_PTE on sun4c
 524                 and     %g1, 0x1, %g1           ! Test SRMMU Enable bit ;-)
 525                 cmp     %g1, 0x0
 526                 be      sun4c_remap             ! A sun4c MMU or normal Sun4
 527                  nop
 528 srmmu_remap:
 529                 /* First, check for a viking (TI) module. */
 530                 set     0x40000000, %g2
 531                 rd      %psr, %g3
 532                 and     %g2, %g3, %g3
 533                 subcc   %g3, 0x0, %g0
 534                 bz      srmmu_nviking
 535                  nop
 536 
 537                 /* Figure out what kind of viking we are on.
 538                  * We need to know if we have to play with the
 539                  * AC bit and disable traps or not.
 540                  */
 541 
 542                 /* I've only seen MicroSparc's on SparcClassics with this
 543                  * bit set.
 544                  */
 545                 set     0x800, %g2
 546                 lda     [%g0] ASI_M_MMUREGS, %g3        ! peek in the control reg
 547                 and     %g2, %g3, %g3
 548                 subcc   %g3, 0x0, %g0
 549                 bnz     srmmu_nviking                   ! is in mbus mode
 550                  nop
 551                 
 552                 rd      %psr, %g3                       ! DONT TOUCH %g3
 553                 andn    %g3, PSR_ET, %g2
 554                 wr      %g2, 0x0, %psr
 555                 WRITE_PAUSE
 556                 
 557                 /* Get context table pointer, then convert to
 558                  * a physical address, which is 36 bits.
 559                  */
 560                 set     AC_M_CTPR, %g4
 561                 lda     [%g4] ASI_M_MMUREGS, %g4
 562                 sll     %g4, 0x4, %g4                   ! We use this below
 563                                                         ! DONT TOUCH %g4
 564 
 565                 /* Set the AC bit in the Viking's MMU control reg. */
 566                 lda     [%g0] ASI_M_MMUREGS, %g5        ! DONT TOUCH %g5
 567                 set     0x8000, %g6                     ! AC bit mask
 568                 or      %g5, %g6, %g6                   ! Or it in...
 569                 sta     %g6, [%g0] ASI_M_MMUREGS        ! Close your eyes...
 570 
 571                 /* Grrr, why does it seem like every other load/store
 572                  * on the sun4m is in some ASI space...
 573                  * Fine with me, let's get the pointer to the level 1
 574                  * page table directory and fetch it's entry.
 575                  */
 576                 lda     [%g4] ASI_M_BYPASS, %o1         ! This is a level 1 ptr
 577                 srl     %o1, 0x4, %o1                   ! Clear low 4 bits
 578                 sll     %o1, 0x8, %o1                   ! Make physical
 579                 
 580                 /* Ok, pull in the PTD. */
 581                 lda     [%o1] ASI_M_BYPASS, %o2         ! This is the 0x0 16MB pgd
 582 
 583                 /* Calculate to KERNBASE entry.
 584                  *
 585                  * XXX Should not use empirical constant, but Gas gets an  XXX
 586                  * XXX upset stomach with the bitshift I would have to use XXX
 587                  */
 588                 add     %o1, 0x3c0, %o3         
 589 
 590                 /* Poke the entry into the calculated address. */
 591                 sta     %o2, [%o3] ASI_M_BYPASS
 592 
 593                 /* I don't get it Sun, if you engineered all these
 594                  * boot loaders and the PROM (thank you for the debugging
 595                  * features btw) why did you not have them load kernel
 596                  * images up in high address space, since this is necessary
 597                  * for ABI compliance anyways?  Does this low-mapping provide
 598                  * enhanced interoperability?
 599                  *
 600                  * "The PROM is the computer."
 601                  */
 602 
 603                 /* Ok, restore the MMU control register we saved in %g5 */
 604                 sta     %g5, [%g0] ASI_M_MMUREGS        ! POW... ouch
 605 
 606                 /* Turn traps back on.  We saved it in %g3 earlier. */
 607                 wr      %g3, 0x0, %psr                  ! tick tock, tick tock
 608 
 609                 /* Now we burn precious CPU cycles due to bad engineering. */
 610                 WRITE_PAUSE
 611 
 612                 /* Wow, all that just to move a 32-bit value from one
 613                  * place to another...  Jump to high memory.
 614                  */
 615                 b       go_to_highmem
 616                  nop
 617 
 618                 /* This works on viking's in Mbus mode and all
 619                  * other MBUS modules.  It is virtually the same as
 620                  * the above madness sans turning traps off and flipping
 621                  * the AC bit.
 622                  */
 623 srmmu_nviking:
 624                 set     AC_M_CTPR, %g1
 625                 lda     [%g1] ASI_M_MMUREGS, %g1        ! get ctx table ptr
 626                 sll     %g1, 0x4, %g1                   ! make physical addr
 627                 lda     [%g1] ASI_M_BYPASS, %g1         ! ptr to level 1 pg_table
 628                 srl     %g1, 0x4, %g1
 629                 sll     %g1, 0x8, %g1                   ! make phys addr for l1 tbl
 630 
 631                 lda     [%g1] ASI_M_BYPASS, %g2         ! get level1 entry for 0x0
 632                 add     %g1, 0x3c0, %g3                 ! XXX AWAY WITH EMPIRICALS
 633                 sta     %g2, [%g3] ASI_M_BYPASS         ! place at KERNBASE entry
 634                 b       go_to_highmem
 635                  nop                                    ! wheee....
 636 
 637                 /* This remaps the kernel on Sun4/4xx machines
 638                  * that have the Sun Mutant Three Level MMU.
 639                  * It's like a platypus, Sun didn't have the
 640                  * SRMMU in conception so they kludged the three
 641                  * level logic in the regular Sun4 MMU probably.
 642                  *
 643                  * Basically, you take each entry in the top level
 644                  * directory that maps the low 3MB starting at
 645                  * address zero and put the mapping in the KERNBASE
 646                  * slots.  These top level pgd's are called regmaps.
 647                  */
 648 sun4_mutant_remap:
 649                 or      %g0, %g0, %g3           ! source base
 650                 sethi   %hi(KERNBASE), %g4      ! destination base
 651                 or      %g4, %lo(KERNBASE), %g4
 652                 sethi   %hi(0x300000), %g5
 653                 or      %g5, %lo(0x300000), %g5 ! upper bound 3MB
 654                 or      %g0, 0x1, %l6
 655                 sll     %l6, 24, %l6            ! Regmap mapping size
 656                 add     %g3, 0x2, %g3           ! Base magic
 657                 add     %g4, 0x2, %g4           ! Base magic
 658 
 659                 /* Main remapping loop on Sun4-Mutant-MMU.
 660                  * "I am not an animal..." -Famous Mutant Person
 661                  */
 662 sun4_mutant_loop:
 663                 lduha   [%g3] ASI_REGMAP, %g2   ! Get lower entry
 664                 stha    %g2, [%g4] ASI_REGMAP   ! Store in high entry
 665                 add     %g4, %l6, %g4           ! Move up high memory ptr
 666                 subcc   %g3, %g5, %g0           ! Reached our limit?
 667                 blu     sun4_mutant_loop        ! Nope, loop again
 668                  add    %g3, %l6, %g3           ! delay, Move up low ptr
 669                 b       go_to_highmem           ! Jump to high memory.
 670                  nop
 671 
 672 /* The following works for normal (ie. non Sun4/400) Sun4 MMU's */
 673 sun4c_remap:
 674                 mov     0, %g3                  ! source base
 675                 set     KERNBASE, %g4           ! destination base
 676                 set     0x300000, %g5           ! upper bound 3MB
 677                 mov     1, %l6
 678                 sll     %l6, 18, %l6            ! sun4c mmu segmap size
 679 sun4c_remap_loop:
 680                 lda     [%g3] ASI_SEGMAP, %g6   ! load phys_seg
 681                 sta     %g6, [%g4] ASI_SEGMAP   ! store new virt mapping
 682                 add     %g3, %l6, %g3           ! Increment source ptr
 683                 subcc   %g3, %g5, %g0           ! Reached limit?
 684                 bl      sun4c_remap_loop        ! Nope, loop again
 685                  add    %g4, %l6, %g4           ! delay, Increment dest ptr
 686 
 687 /* Now do a non-relative jump so that PC is in high-memory */
 688 go_to_highmem:
 689                 set     execute_in_high_mem, %g1
 690                 jmpl    %g1, %g0
 691                  nop
 692 
 693 /* Acquire boot time privileged register values, this will help debugging.
 694  * I figure out and store nwindows and nwindowsm1 later on.
 695  */
 696 execute_in_high_mem:
 697 #if CONFIG_AP1000
 698                 /* we don't have a prom :-( */
 699                 b sun4m_init
 700                 nop
 701 #endif
 702                 mov     %l0, %o0                ! put back romvec
 703                 mov     %l1, %o1                ! and debug_vec
 704 
 705                 sethi   %hi( C_LABEL(prom_vector_p) ), %g1
 706                 st      %o0, [%g1 + %lo( C_LABEL(prom_vector_p) )]
 707 
 708                 sethi   %hi( C_LABEL(linux_dbvec) ), %g1
 709                 st      %o1, [%g1 + %lo( C_LABEL(linux_dbvec) )]
 710 
 711                 ld      [%o0 + 0x4], %o3
 712                 and     %o3, 0x3, %o5                   ! get the version
 713 
 714                 cmp     %o3, 0x2                        ! a v2 prom?
 715                 be      found_version
 716                  nop
 717 
 718                 /* paul@sfe.com.au */
 719                 cmp     %o3, 0x3                        ! a v3 prom?
 720                 be      found_version
 721                  nop
 722 
 723 /* Old sun4's pass our load address into %o0 instead of the prom
 724  * pointer. On sun4's you have to hard code the romvec pointer into
 725  * your code. Sun probably still does that because they don't even
 726  * trust their own "OpenBoot" specifications.
 727  */
 728 
 729                 set     LOAD_ADDR, %g6
 730                 cmp     %o0, %g6                ! an old sun4?
 731                 be      no_sun4_here
 732                  nop
 733 
 734 found_version:
 735 
 736 /* Get the machine type via the mysterious romvec node operations. */
 737 
 738                 or      %g0, %g7, %l1
 739                 add     %l1, 0x1c, %l1          
 740                 ld      [%l1], %l0
 741                 ld      [%l0], %l0
 742                 call    %l0
 743                  or     %g0, %g0, %o0           ! next_node(0) = first_node
 744                 or      %o0, %g0, %g6
 745 
 746                 sethi   %hi( C_LABEL(cputypvar) ), %o1  ! First node has cpu-arch
 747                 or      %o1, %lo( C_LABEL(cputypvar) ), %o1
 748                 sethi   %hi( C_LABEL(cputypval) ), %o2  ! information, the string
 749                 or      %o2, %lo( C_LABEL(cputypval) ), %o2
 750                 ld      [%l1], %l0              ! 'compatibility' tells
 751                 ld      [%l0 + 0xc], %l0        ! that we want 'sun4x' where
 752                 call    %l0                     ! x is one of '', 'c', 'm',
 753                  nop                            ! 'd' or 'e'. %o2 holds pointer
 754                                                 ! to a buf where above string
 755                                                 ! will get stored by the prom.
 756 
 757                 subcc   %o0, %g0, %g0
 758                 bpos    got_prop                ! Got the property
 759                  nop
 760 
 761                 or      %g6, %g0, %o0
 762                 sethi   %hi( C_LABEL(cputypvar_sun4m) ), %o1
 763                 or      %o1, %lo( C_LABEL(cputypvar_sun4m) ), %o1
 764                 sethi   %hi( C_LABEL(cputypval) ), %o2
 765                 or      %o2, %lo( C_LABEL(cputypval) ), %o2
 766                 ld      [%l1], %l0
 767                 ld      [%l0 + 0xc], %l0
 768                 call    %l0
 769                  nop
 770 
 771 got_prop:
 772                 set     C_LABEL(cputypval), %o2
 773                 ldub    [%o2 + 0x4], %l1
 774 
 775                 cmp     %l1, 'c'                ! We already know we are not
 776                 be      1f                      ! on a plain sun4 because of
 777                  nop                            ! the check for 0x4000 in %o0
 778 
 779                 cmp     %l1, 'm'                ! at start
 780                 be      1f
 781                  nop
 782 
 783                 cmp     %l1, 'd'
 784                 be      no_sun4d_here           ! God bless the person who
 785                  nop                            ! tried to run this on sun4d.
 786         
 787                 cmp     %l1, 'e'
 788                 be      no_sun4e_here           ! Could be a sun4e.
 789                  nop
 790 
 791                 b       no_sun4u_here           ! AIEEE, a V9 sun4u...
 792                  nop
 793 
 794 
 795 1:
 796                 set     C_LABEL(cputypval), %l1
 797                 ldub    [%l1 + 0x4], %l1
 798                 cmp     %l1, 'm'                ! Test for sun4d, sun4e ?
 799                 be      sun4m_init
 800                  nop
 801 
 802                 /* Jump into mmu context zero. */
 803                 set     AC_CONTEXT, %g1
 804                 stba    %g0, [%g1] ASI_CONTROL
 805 
 806                 b       sun4c_continue_boot
 807                  nop
 808 
 809 sun4m_init:
 810 
 811 /* Ok, the PROM could have done funny things and apple cider could still
 812  * be sitting in the fault status/address registers.  Read them all to
 813  * clear them so we don't get magic faults later on.
 814  */
 815 /* This sucks, apparently this makes Vikings call prom panic, will fix later */
 816 
 817                 rd      %psr, %o1
 818                 srl     %o1, 28, %o1            ! Get a type of the CPU
 819 
 820                 subcc   %o1, 4, %g0             ! TI: Viking or MicroSPARC
 821                 be      sun4c_continue_boot
 822                  nop
 823 
 824                 set     AC_M_SFSR, %o0
 825                 lda     [%o0] ASI_M_MMUREGS, %g0
 826                 set     AC_M_SFAR, %o0
 827                 lda     [%o0] ASI_M_MMUREGS, %g0
 828 
 829                 /* Fujitsu MicroSPARC-II has no asynchronous flavors of FARs */
 830                 subcc   %o1, 0, %g0
 831                 be      sun4c_continue_boot
 832                  nop
 833 
 834                 set     AC_M_AFSR, %o0
 835                 lda     [%o0] ASI_M_MMUREGS, %g0
 836                 set     AC_M_AFAR, %o0
 837                 lda     [%o0] ASI_M_MMUREGS, %g0
 838                  nop
 839 
 840 
 841 sun4c_continue_boot:
 842 
 843 
 844 /* Aieee, now set PC and nPC, enable traps, give ourselves a stack and it's
 845  * show-time!
 846  */
 847 
 848                 sethi   %hi( C_LABEL(cputyp) ), %o0
 849                 st      %g4, [%o0 + %lo( C_LABEL(cputyp) )]
 850 
 851                 /* Turn on Supervisor, EnableFloating, and all the PIL bits.
 852                  * Also puts us in register window zero with traps off.
 853                  */
 854                 set     (PSR_PS | PSR_S | PSR_PIL | PSR_EF), %g2
 855                 wr      %g2, 0x0, %psr
 856                 WRITE_PAUSE
 857 
 858                 /* I want a kernel stack NOW! */
 859                 set     C_LABEL(bootup_user_stack), %g1
 860                 add     %g1, (PAGE_SIZE - REGWIN_SZ), %sp
 861                 mov     0, %fp                  /* And for good luck */
 862 
 863                 /* Zero out our BSS section. */
 864                 set     C_LABEL(edata) , %o0    ! First address of BSS
 865                 set     C_LABEL(end) , %o1      ! Last address of BSS
 866                 add     %o0, 0x1, %o0
 867 1:      
 868                 stb     %g0, [%o0]
 869                 subcc   %o0, %o1, %g0
 870                 bl      1b
 871                  add    %o0, 0x1, %o0
 872 
 873                 /* Initialize the umask value for init_task just in case.
 874                  * But first make current_set[0] point to something useful.
 875                  */
 876                 set     C_LABEL(init_task), %g4
 877                 set     C_LABEL(current_set), %g2
 878                 st      %g4, [%g2]
 879 
 880                 set     C_LABEL(bootup_kernel_stack), %g3
 881                 st      %g3, [%g4 + TASK_KSTACK_PG]
 882                 st      %g0, [%g4 + THREAD_UMASK]
 883 
 884 /* Compute NWINDOWS and stash it away. Now uses %wim trick explained
 885  * in the V8 manual. Ok, this method seems to work, Sparc is cool...
 886  * No, it doesn't work, have to play the save/readCWP/restore trick.
 887  */
 888 
 889                 wr      %g0, 0x0, %wim                  ! so we dont get a trap
 890                 WRITE_PAUSE
 891 
 892                 save
 893 
 894                 rd      %psr, %g3
 895 
 896                 restore
 897 
 898                 and     %g3, 0x1f, %g3
 899                 add     %g3, 0x1, %g3
 900 
 901                 mov     2, %g1
 902                 wr      %g1, 0x0, %wim                  ! make window 1 invalid
 903                 WRITE_PAUSE
 904 
 905                 cmp     %g3, 0x7
 906                 bne     2f
 907                  nop
 908 
 909                 /* Adjust our window handling routines to
 910                  * do things correctly on 7 window Sparcs.
 911                  */
 912 
 913 #define         PATCH_INSN(src, dest) \
 914                 set     src, %g5; \
 915                 set     dest, %g6; \
 916                 ld      [%g5], %g4; \
 917                 st      %g4, [%g6];
 918         
 919                 /* Patch for window spills... */
 920                 PATCH_INSN(spnwin_patch1_7win, spnwin_patch1)
 921                 PATCH_INSN(spnwin_patch2_7win, spnwin_patch2)
 922                 PATCH_INSN(spnwin_patch3_7win, spnwin_patch3)
 923 
 924                 /* Patch for window fills... */
 925                 PATCH_INSN(fnwin_patch1_7win, fnwin_patch1)
 926                 PATCH_INSN(fnwin_patch2_7win, fnwin_patch2)
 927 
 928                 /* Patch for trap entry setup... */
 929                 PATCH_INSN(tsetup_7win_patch1, tsetup_patch1)
 930                 PATCH_INSN(tsetup_7win_patch2, tsetup_patch2)
 931                 PATCH_INSN(tsetup_7win_patch3, tsetup_patch3)
 932                 PATCH_INSN(tsetup_7win_patch4, tsetup_patch4)
 933                 PATCH_INSN(tsetup_7win_patch5, tsetup_patch5)
 934                 PATCH_INSN(tsetup_7win_patch6, tsetup_patch6)
 935 
 936                 /* Patch for returning from traps... */
 937                 PATCH_INSN(rtrap_7win_patch1, rtrap_patch1)
 938                 PATCH_INSN(rtrap_7win_patch2, rtrap_patch2)
 939                 PATCH_INSN(rtrap_7win_patch3, rtrap_patch3)
 940                 PATCH_INSN(rtrap_7win_patch4, rtrap_patch4)
 941                 PATCH_INSN(rtrap_7win_patch5, rtrap_patch5)
 942 
 943 #ifdef __SMP__
 944 
 945                 /* Patch for returning from an ipi... */
 946                 PATCH_INSN(rirq_7win_patch1, rirq_patch1)
 947                 PATCH_INSN(rirq_7win_patch2, rirq_patch2)
 948                 PATCH_INSN(rirq_7win_patch3, rirq_patch3)
 949                 PATCH_INSN(rirq_7win_patch4, rirq_patch4)
 950                 PATCH_INSN(rirq_7win_patch5, rirq_patch5)
 951 
 952 #endif
 953 
 954 2:              
 955                 sethi   %hi( C_LABEL(nwindows) ), %g4
 956                 st      %g3, [%g4 + %lo( C_LABEL(nwindows) )]   ! store final value
 957                 sub     %g3, 0x1, %g3
 958                 sethi   %hi( C_LABEL(nwindowsm1) ), %g4
 959                 st      %g3, [%g4 + %lo( C_LABEL(nwindowsm1) )]
 960 
 961                 /* Here we go, start using Linux's trap table... */
 962                 set     C_LABEL(trapbase), %g3
 963                 wr      %g3, 0x0, %tbr
 964                 WRITE_PAUSE
 965 
 966                 /* Finally, turn on traps so that we can call c-code. */
 967                 rd      %psr, %g3
 968                 wr      %g3, 0x0, %psr
 969                 WRITE_PAUSE
 970 
 971                 wr      %g3, PSR_ET, %psr
 972                 WRITE_PAUSE
 973 
 974                 /* First we call prom_init() to set up PROMLIB, then
 975                  * off to start_kernel().
 976                  */
 977 
 978                 sethi   %hi( C_LABEL(prom_vector_p) ), %g5
 979                 ld      [%g5 + %lo( C_LABEL(prom_vector_p) )], %o0
 980                 call    C_LABEL(prom_init)
 981                  nop
 982 
 983                 call    C_LABEL(start_kernel)
 984                  nop
 985         
 986                 /* We should not get here. */
 987                 call    halt_me
 988                  nop
 989 
 990 /* There, happy now Adrian? */
 991 
 992                 /* XXX Fix this... XXX */
 993 no_sun4_here:
 994                 sethi   %hi(SUN4_PROM_VECTOR+SUN4_PRINTF), %o1
 995                 ld      [%o1 + %lo(SUN4_PROM_VECTOR+SUN4_PRINTF)], %o1
 996                 set     sun4_notsup, %o0
 997                 call    %o1
 998                  nop
 999 1:
1000                 ba      1b                      ! Cannot exit into KMON
1001                  nop
1002 
1003 no_sun4d_here:
1004                 ld      [%g7 + 0x68], %o1
1005                 set     sun4d_notsup, %o0
1006                 call    %o1
1007                  nop
1008                 b       halt_me
1009                  nop
1010 
1011 no_sun4e_here:
1012                 ld      [%g7 + 0x68], %o1
1013                 set     sun4e_notsup, %o0
1014                 call    %o1
1015                  nop
1016                 b       halt_me
1017                  nop
1018 
1019 no_sun4u_here:
1020                 ld      [%g7 + 0x68], %o1
1021                 set     sun4u_notsup, %o0
1022                 call    %o1
1023                  nop
1024                 b       halt_me
1025                  nop
1026 
1027 halt_me:
1028                 ld      [%g7 + 0x74], %o0
1029                 call    %o0                     ! Get us out of here...
1030                  nop                            ! Apparently Solaris is better.
1031 
1032         .data
1033         .align 4
1034 
1035 /*
1036  * Fill up the prom vector, note in particular the kind first element,
1037  * no joke. I don't need all of them in here as the entire prom vector
1038  * gets initialized in c-code so all routines can use it.
1039  */
1040 
1041         .globl  C_LABEL(prom_vector_p)
1042 C_LABEL(prom_vector_p):
1043                 .word 0
1044 
1045 /* We calculate the following at boot time, window fills/spills and trap entry
1046  * code uses these to keep track of the register windows.
1047  */
1048 
1049         .align 4
1050         .globl  C_LABEL(nwindows)
1051         .globl  C_LABEL(nwindowsm1)
1052 C_LABEL(nwindows):
1053         .word   8
1054 C_LABEL(nwindowsm1):
1055         .word   7
1056 
1057 /* Boot time debugger vector value.  We need this later on. */
1058 
1059         .align 4
1060         .globl  C_LABEL(linux_dbvec)
1061 C_LABEL(linux_dbvec):
1062         .word   0
1063         .word   0
1064 
1065         .align 8
1066 
1067         .globl  C_LABEL(lvl14_save)
1068 C_LABEL(lvl14_save):
1069         .word   0
1070         .word   0
1071         .word   0
1072         .word   0
1073         .word   t_irq14
1074 

/* */