xref: /freebsd/sys/powerpc/ps3/ps3-hv-asm.awk (revision 50a03971d3327f3ca5c2a1a96ec83c77b6a669c8)
103479763SNathan Whitehorn# This script generates the PS3 hypervisor call stubs from an HV
203479763SNathan Whitehorn# interface definition file. The PS3 HV calling convention is very
303479763SNathan Whitehorn# similar to the PAPR one, except that the function token is passed in
403479763SNathan Whitehorn# r11 instead of r3.
503479763SNathan Whitehorn#
603479763SNathan Whitehorn# Invoke like so: awk -f ps3-hv-asm.awk < ps3-hvcall.master > ps3-hvcall.S
703479763SNathan Whitehorn#
803479763SNathan Whitehorn
903479763SNathan WhitehornBEGIN {
1003479763SNathan Whitehorn	printf("#include <machine/asm.h>\n\n");
1103479763SNathan Whitehorn	printf("#define hc .long 0x44000022\n\n");
1203479763SNathan Whitehorn}
1303479763SNathan Whitehorn
1403479763SNathan Whitehorn/HVCALL.*/ {
15*50a03971SChattrapat Sangmanee	# Parameter save area
16*50a03971SChattrapat Sangmanee	# 48 in elfv1, 32 in elfv2
17*50a03971SChattrapat Sangmanee	stack_offset = 32;
18*50a03971SChattrapat Sangmanee
1903479763SNathan Whitehorn	code = $2;
2003479763SNathan Whitehorn	ins = split($4, a, ",")
2103479763SNathan Whitehorn	outs = split($5, a, ",")
2203479763SNathan Whitehorn
2303479763SNathan Whitehorn	printf("ASENTRY(%s)\n",$3);
2403479763SNathan Whitehorn	printf("\tmflr	%%r0\n");
2503479763SNathan Whitehorn	printf("\tstd	%%r0,16(%%r1)\n");
26*50a03971SChattrapat Sangmanee	printf("\tstdu	%%r1,-%d(%%r1)\n", stack_offset+8*outs);
2703479763SNathan Whitehorn
2803479763SNathan Whitehorn	if ($4 == "UNUSED")
2903479763SNathan Whitehorn		ins = 0
3003479763SNathan Whitehorn
3103479763SNathan Whitehorn	# Save output reg addresses to the stack
3203479763SNathan Whitehorn	for (i = 0; i < outs; i++) {
3303479763SNathan Whitehorn		if (ins+i >= 8) {
34*50a03971SChattrapat Sangmanee		   printf("\tld	%%r11,%d(%%r1)\n", stack_offset+8*outs + stack_offset + 8*(i+ins));
35*50a03971SChattrapat Sangmanee		   printf("\tstd	%%r11,%d(%%r1)\n", stack_offset+8*i);
3603479763SNathan Whitehorn		} else {
37*50a03971SChattrapat Sangmanee		   printf("\tstd	%%r%d,%d(%%r1)\n", 3+ins+i, stack_offset+8*i);
3803479763SNathan Whitehorn		}
3903479763SNathan Whitehorn	}
4003479763SNathan Whitehorn
4103479763SNathan Whitehorn	printf("\tli	%%r11,%d\n", code);
4203479763SNathan Whitehorn	printf("\thc\n");
4303479763SNathan Whitehorn	printf("\textsw	%%r3,%%r3\n");
4403479763SNathan Whitehorn
4503479763SNathan Whitehorn	for (i = 0; i < outs; i++) {
46*50a03971SChattrapat Sangmanee		printf("\tld	%%r11,%d(%%r1)\n", stack_offset+8*i);
4703479763SNathan Whitehorn		printf("\tstd	%%r%d,0(%%r11)\n", 4+i);
4803479763SNathan Whitehorn	}
4903479763SNathan Whitehorn
5003479763SNathan Whitehorn	printf("\tld	%%r1,0(%%r1)\n");
5103479763SNathan Whitehorn	printf("\tld	%%r0,16(%%r1)\n");
5203479763SNathan Whitehorn	printf("\tmtlr	%%r0\n");
53*50a03971SChattrapat Sangmanee	printf("\tblr\n");
54*50a03971SChattrapat Sangmanee
55*50a03971SChattrapat Sangmanee	printf("ASEND(%s)\n\n",$3);
5603479763SNathan Whitehorn}
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