FreeBSD/Linux Kernel Cross Reference
sys/powerpc/ps3/ps3-hv-asm.awk

     # This script generates the PS3 hypervisor call stubs from an HV
     # interface definition file. The PS3 HV calling convention is very
     # similar to the PAPR one, except that the function token is passed in
     # r11 instead of r3.
     #
     # Invoke like so: awk -f ps3-hv-asm.awk < ps3-hvcall.master > ps3-hvcall.S
     #
     
     # $FreeBSD$
    
    BEGIN {
            printf("/* $FreeBSD$ */\n\n");
            printf("#include <machine/asm.h>\n\n");
            printf("#define hc .long 0x44000022\n\n");
    }
    
    /HVCALL.*/ {
            code = $2;
            ins = split($4, a, ",")
            outs = split($5, a, ",")
            
            printf("ASENTRY(%s)\n",$3);
            printf("\tmflr  %%r0\n");
            printf("\tstd   %%r0,16(%%r1)\n");
            printf("\tstdu  %%r1,-%d(%%r1)\n", 48+8*outs);
    
            if ($4 == "UNUSED")
                    ins = 0
            
            # Save output reg addresses to the stack
            for (i = 0; i < outs; i++) {
                    if (ins+i >= 8) {
                       printf("\tld %%r11,%d(%%r1)\n", 48+8*outs + 48 + 8*(i+ins));
                       printf("\tstd        %%r11,%d(%%r1)\n", 48+8*i);
                    } else {
                       printf("\tstd        %%r%d,%d(%%r1)\n", 3+ins+i, 48+8*i);
                    }
            }
    
            printf("\tli    %%r11,%d\n", code);
            printf("\thc\n");
            printf("\textsw %%r3,%%r3\n");
                    
            for (i = 0; i < outs; i++) {
                    printf("\tld    %%r11,%d(%%r1)\n", 48+8*i);
                    printf("\tstd   %%r%d,0(%%r11)\n", 4+i);
            }
    
            printf("\tld    %%r1,0(%%r1)\n");
            printf("\tld    %%r0,16(%%r1)\n");
            printf("\tmtlr  %%r0\n");
            printf("\tblr\n\n");
    }

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