sys/powerpc/ps3/ps3-hv-asm.awk

   1 # This script generates the PS3 hypervisor call stubs from an HV
   2 # interface definition file. The PS3 HV calling convention is very
   3 # similar to the PAPR one, except that the function token is passed in
   4 # r11 instead of r3.
   5 #
   6 # Invoke like so: awk -f ps3-hv-asm.awk < ps3-hvcall.master > ps3-hvcall.S
   7 #
   8
   9 BEGIN {
  10         printf("#include <machine/asm.h>\n\n");
  11         printf("#define hc .long 0x44000022\n\n");
  12 }
  13
  14 /HVCALL.*/ {
  15         # Parameter save area
  16         # 48 in elfv1, 32 in elfv2
  17         stack_offset = 32;
  18
  19         code = $2;
  20         ins = split($4, a, ",")
  21         outs = split($5, a, ",")
  22
  23         printf("ASENTRY(%s)\n",$3);
  24         printf("\tmflr  %%r0\n");
  25         printf("\tstd   %%r0,16(%%r1)\n");
  26         printf("\tstdu  %%r1,-%d(%%r1)\n", stack_offset+8*outs);
  27
  28         if ($4 == "UNUSED")
  29                 ins = 0
  30
  31         # Save output reg addresses to the stack
  32         for (i = 0; i < outs; i++) {
  33                 if (ins+i >= 8) {
  34                    printf("\tld %%r11,%d(%%r1)\n", stack_offset+8*outs + stack_offset + 8*(i+ins));
  35                    printf("\tstd        %%r11,%d(%%r1)\n", stack_offset+8*i);
  36                 } else {
  37                    printf("\tstd        %%r%d,%d(%%r1)\n", 3+ins+i, stack_offset+8*i);
  38                 }
  39         }
  40
  41         printf("\tli    %%r11,%d\n", code);
  42         printf("\thc\n");
  43         printf("\textsw %%r3,%%r3\n");
  44
  45         for (i = 0; i < outs; i++) {
  46                 printf("\tld    %%r11,%d(%%r1)\n", stack_offset+8*i);
  47                 printf("\tstd   %%r%d,0(%%r11)\n", 4+i);
  48         }
  49
  50         printf("\tld    %%r1,0(%%r1)\n");
  51         printf("\tld    %%r0,16(%%r1)\n");
  52         printf("\tmtlr  %%r0\n");
  53         printf("\tblr\n");
  54
  55         printf("ASEND(%s)\n\n",$3);
  56 }