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 # $FreeBSD$
  10
  11 BEGIN {
  12         printf("/* $FreeBSD$ */\n\n");
  13         printf("#include <machine/asm.h>\n\n");
  14         printf("#define hc .long 0x44000022\n\n");
  15 }
  16
  17 /HVCALL.*/ {
  18         code = $2;
  19         ins = split($4, a, ",")
  20         outs = split($5, a, ",")
  21
  22         printf("ASENTRY(%s)\n",$3);
  23         printf("\tmflr  %%r0\n");
  24         printf("\tstd   %%r0,16(%%r1)\n");
  25         printf("\tstdu  %%r1,-%d(%%r1)\n", 48+8*outs);
  26
  27         if ($4 == "UNUSED")
  28                 ins = 0
  29
  30         # Save output reg addresses to the stack
  31         for (i = 0; i < outs; i++) {
  32                 if (ins+i >= 8) {
  33                    printf("\tld %%r11,%d(%%r1)\n", 48+8*outs + 48 + 8*(i+ins));
  34                    printf("\tstd        %%r11,%d(%%r1)\n", 48+8*i);
  35                 } else {
  36                    printf("\tstd        %%r%d,%d(%%r1)\n", 3+ins+i, 48+8*i);
  37                 }
  38         }
  39
  40         printf("\tli    %%r11,%d\n", code);
  41         printf("\thc\n");
  42         printf("\textsw %%r3,%%r3\n");
  43
  44         for (i = 0; i < outs; i++) {
  45                 printf("\tld    %%r11,%d(%%r1)\n", 48+8*i);
  46                 printf("\tstd   %%r%d,0(%%r11)\n", 4+i);
  47         }
  48
  49         printf("\tld    %%r1,0(%%r1)\n");
  50         printf("\tld    %%r0,16(%%r1)\n");
  51         printf("\tmtlr  %%r0\n");
  52         printf("\tblr\n\n");
  53 }