benchmarks/common/crt.S

   1 #include "pcr.h"
   2
   3   .data
   4   .globl _heapend
   5   .globl environ
   6 _heapend:
   7   .word 0
   8 environ:
   9   .word 0
  10
  11   .text
  12   .globl _start
  13
  14 _start:
  15   li  x1, 0
  16   li  x2, 0
  17   li  x3, 0
  18   li  x4, 0
  19   li  x5, 0
  20   li  x6, 0
  21   li  x7, 0
  22   li  x8, 0
  23   li  x9, 0
  24   li  x10,0
  25   li  x11,0
  26   li  x12,0
  27   li  x13,0
  28   li  x14,0
  29   li  x15,0
  30   li  x16,0
  31   li  x17,0
  32   li  x18,0
  33   li  x19,0
  34   li  x20,0
  35   li  x21,0
  36   li  x22,0
  37   li  x23,0
  38   li  x24,0
  39   li  x25,0
  40   li  x26,0
  41   li  x27,0
  42   li  x28,0
  43   li  x29,0
  44   li  x30,0
  45   li  x31,0
  46
  47   # enable fp
  48   setpcr status, SR_EF
  49
  50   # enable vec
  51   setpcr t0, status, SR_EV
  52
  53   ## if that didn't stick, we don't have an FPU, so don't initialize it
  54   and t0, t0, SR_EF
  55   beqz t0, 1f
  56
  57   fssr    x0
  58   fmv.s.x f0, x0
  59   fmv.s.x f1, x0
  60   fmv.s.x f2, x0
  61   fmv.s.x f3, x0
  62   fmv.s.x f4, x0
  63   fmv.s.x f5, x0
  64   fmv.s.x f6, x0
  65   fmv.s.x f7, x0
  66   fmv.s.x f8, x0
  67   fmv.s.x f9, x0
  68   fmv.s.x f10,x0
  69   fmv.s.x f11,x0
  70   fmv.s.x f12,x0
  71   fmv.s.x f13,x0
  72   fmv.s.x f14,x0
  73   fmv.s.x f15,x0
  74   fmv.s.x f16,x0
  75   fmv.s.x f17,x0
  76   fmv.s.x f18,x0
  77   fmv.s.x f19,x0
  78   fmv.s.x f20,x0
  79   fmv.s.x f21,x0
  80   fmv.s.x f22,x0
  81   fmv.s.x f23,x0
  82   fmv.s.x f24,x0
  83   fmv.s.x f25,x0
  84   fmv.s.x f26,x0
  85   fmv.s.x f27,x0
  86   fmv.s.x f28,x0
  87   fmv.s.x f29,x0
  88   fmv.s.x f30,x0
  89   fmv.s.x f31,x0
  90 1:
  91
  92   # only allow core 0 to proceed
  93 1:mfpcr a0, hartid
  94   bnez a0, 1b
  95
  96   la  sp,stacktop
  97   jal main
  98 1:b 1b
  99
 100   .bss
 101   .globl stacktop
 102
 103   .align 4
 104   .skip 131072
 105 stacktop: