root/arch/mips/dec/prom/locore.S

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   1 /* SPDX-License-Identifier: GPL-2.0 */
   2 /*
   3  * locore.S
   4  */
   5 #include <asm/asm.h>
   6 #include <asm/regdef.h>
   7 #include <asm/mipsregs.h>
   8 
   9         .text
  10 
  11 /*
  12  * Simple general exception handling routine. This one is used for the
  13  * Memory sizing routine for pmax machines. HK
  14  */
  15 
  16 NESTED(genexcept_early, 0, sp)
  17         .set    noat
  18         .set    noreorder
  19 
  20         mfc0    k0, CP0_STATUS
  21         la      k1, mem_err
  22 
  23         sw      k0, 0(k1)
  24 
  25         mfc0    k0, CP0_EPC
  26         nop
  27         addiu   k0, 4           # skip the causing instruction
  28         jr      k0
  29          rfe
  30 END(genexcept_early)
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