case obj.NAME_PARAM:
		// Adjust to the bottom of PARAMs.
		a.Offset += stacksize + 8
	}
}

// preprocess generates prologue and epilogue code, computes PC-relative branch
// and jump offsets, and resolves pseudo-registers.
//
// preprocess is called once per linker symbol.
//
// When preprocess finishes, all instructions in the symbol are either
// concrete, real RISC-V instructions or directive pseudo-ops like TEXT,

	// and accept the same constants.
	MOVW $2147483648, R5            // 64058000
	MOVWZ $-2147483648, R5          // 3ca08000

	// TODO: These are preprocessed by the assembler into MOVD $const>>shift, R5; SLD $shift, R5.
	//       This only captures the MOVD. Should the SLD be appended to the encoding by the test?
	// Hex constant 0x20004000000

	type fileDir struct {
		base string
		dir  int
	}
	dirNums := make(map[string]int)
	dirs := []string{""}
	files := []fileDir{}

	// Preprocess files to collect directories. This assumes that the
	// file table is already de-duped.
	for i, name := range unit.FileTable {
		name := expandFile(name)
		if len(name) == 0 {

			c.ctxt.Diag("short branch too far\n%v", p)
		}
		o1 = OP_IRR(c.opirr(p.As), uint32(v), p.From.Reg, p.Reg)
		// for ABFPT and ABFPF only: always fill delay slot with 0
		// see comments in func preprocess for details.
		o2 = 0

	case 7: /* mov r, soreg ==> sw o(r) */
		r := p.To.Reg
		if r == obj.REG_NONE {
			r = o.param
		}
		v := c.regoff(&p.To)