# Copyright (c) 2021, RISC OS Open Ltd
# All rights reserved.
# 
# Redistribution and use in source and binary forms, with or without
# modification, are permitted provided that the following conditions are met: 
#     * Redistributions of source code must retain the above copyright
#       notice, this list of conditions and the following disclaimer.
#     * Redistributions in binary form must reproduce the above copyright
#       notice, this list of conditions and the following disclaimer in the
#       documentation and/or other materials provided with the distribution.
#     * Neither the name of RISC OS Open Ltd nor the names of its contributors
#       may be used to endorse or promote products derived from this software
#       without specific prior written permission.
# 
# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
# AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
# IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
# ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
# LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
# CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
# SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
# INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
# CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
# ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
# POSSIBILITY OF SUCH DAMAGE.
# 

# A8.6.74 LDRH (immediate, ARM)
LDRH_imm_A1(Rt,Rn,imm4H,imm4L,P,U,W)
{
	return aborttrap_LDRH_imm(ctx,Rt,Rn,(imm4H<<4)|imm4L,P,U,!P || W);
}

# A8.6.75 LDRH (literal)
LDRH_lit_A1(Rt,imm4H,imm4L,U,nonstandard)
{
	if(nonstandard)
		return aborttrap_ERROR(Unexpected);
	return aborttrap_LDRH_lit(ctx,Rt,(imm4H<<4)|imm4L,U);
}

# A8.6.76 LDRH (register)
LDRH_reg_A1(Rt,Rn,Rm,P,U,W,nonstandard)
{
	if(nonstandard)
		return aborttrap_ERROR(Unexpected);
	return aborttrap_LDRH_reg(ctx,Rt,Rn,Rm,P,U,!P || W,SHIFT_LSL,0);
}

# A8.6.78 LDRSB (immediate)
LDRSB_imm_A1(Rt,Rn,imm4H,imm4L,P,U,W)
{
	return aborttrap_LDRSB_imm(ctx,Rt,Rn,(imm4H<<4)|imm4L,P,U,!P || W);
}

# A8.6.79 LDRSB (literal)
LDRSB_lit_A1(Rt,imm4H,imm4L,U,nonstandard)
{
	if(nonstandard)
		return aborttrap_ERROR(Unexpected);
	return aborttrap_LDRSB_lit(ctx,Rt,(imm4H<<4)|imm4L,U);
}

# A8.6.80 LDRSB (register)
LDRSB_reg_A1(Rt,Rn,Rm,P,U,W,nonstandard)
{
	if(nonstandard)
		return aborttrap_ERROR(Unexpected);
	return aborttrap_LDRSB_reg(ctx,Rt,Rn,Rm,P,U,!P || W,SHIFT_LSL,0);
}

# A8.6.82 LDRSH (immediate)
LDRSH_imm_A1(Rt,Rn,imm4H,imm4L,P,U,W,nonstandard)
{
	if(nonstandard)
		return aborttrap_ERROR(Unexpected);
	return aborttrap_LDRSH_imm(ctx,Rt,Rn,(imm4H<<4)|imm4L,P,U,!P || W);
}

# A8.6.83 LDRSH (literal)
LDRSH_lit_A1(Rt,imm4H,imm4L,U,nonstandard)
{
	if(nonstandard)
		return aborttrap_ERROR(Unexpected);
	return aborttrap_LDRSH_lit(ctx,Rt,(imm4H<<4)|imm4L,U);
}

# A8.6.84 LDRSH (register)
LDRSH_reg_A1(Rt,Rn,Rm,P,U,W,nonstandard)
{
	if(nonstandard)
		return aborttrap_ERROR(Unexpected);
	return aborttrap_LDRSH_reg(ctx,Rt,Rn,Rm,P,U,!P || W,SHIFT_LSL,0);
}

# A8.6.207 STRH (immediate, ARM)
STRH_imm_A1(Rt,Rn,imm4H,imm4L,P,U,W)
{
	return aborttrap_STRH_imm(ctx,Rt,Rn,(imm4H<<4)|imm4L,P,U,!P || W);
}

# A8.6.208 STRH (register)
STRH_reg_A1(Rt,Rn,Rm,P,U,W,nonstandard)
{
	if(nonstandard)
		return aborttrap_ERROR(Unexpected);
	return aborttrap_STRH_reg(ctx,Rt,Rn,Rm,P,U,!P || W,SHIFT_LSL,0);
}