101 lines
2.4 KiB
ArmAsm
101 lines
2.4 KiB
ArmAsm
# Blackfin testcase for setting all ASTAT bits via CC
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# mach: bfin
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# We encode the opcodes directly since we test reserved bits
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# which lack an insn in the ISA for it. It's a 16bit insn;
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# the low 8 bits are always 0x03 while the encoding for the
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# high 8 bits are:
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# bit 7 - direction
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# 0: CC=...;
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# 1: ...=CC;
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# bit 6/5 - operation
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# 0: = assignment
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# 1: | bit or
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# 2: & bit and
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# 3: ^ bit xor
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# bit 4-0 - the bit in ASTAT to access
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.include "testutils.inc"
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.macro _do dir:req, op:req, bit:req, bit_in:req, cc_in:req, bg_val:req, bit_out:req, cc_out:req
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/* CC = CC; is invalid, so skip it */
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.if \bit != 5
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/* Calculate the before and after ASTAT values */
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imm32 R1, (\bg_val & ~((1 << \bit) | (1 << 5))) | (\bit_in << \bit) | (\cc_in << 5);
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imm32 R3, (\bg_val & ~((1 << \bit) | (1 << 5))) | (\bit_out << \bit) | (\cc_out << 5);
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/* Test the actual opcode */
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ASTAT = R1;
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.byte (\dir << 7) | (\op << 5) | \bit
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.byte 0x03
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R2 = ASTAT;
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/* Make sure things line up */
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CC = R3 == R2;
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IF !CC JUMP 1f;
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JUMP 2f;
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1: fail
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2:
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.endif
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/* Recurse through all the bits */
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.if \bit > 0
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_do \dir, \op, \bit - 1, \bit_in, \cc_in, \bg_val, \bit_out, \cc_out
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.endif
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.endm
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/* Test different background fields on ASTAT */
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.macro do dir:req, op:req, bit_in:req, cc_in:req, bit_out:req, cc_out:req
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_do \dir, \op, 31, \bit_in, \cc_in, 0, \bit_out, \cc_out
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_do \dir, \op, 31, \bit_in, \cc_in, -1, \bit_out, \cc_out
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.endm
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start
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nop;
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_cc_eq_bit: /* CC = bit */
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do 0, 0, 0, 0, 0, 0
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do 0, 0, 0, 1, 0, 0
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do 0, 0, 1, 0, 1, 1
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do 0, 0, 1, 1, 1, 1
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_bit_eq_cc: /* bit = CC */
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do 1, 0, 0, 0, 0, 0
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do 1, 0, 0, 1, 1, 1
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do 1, 0, 1, 0, 0, 0
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do 1, 0, 1, 1, 1, 1
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_cc_or_bit: /* CC |= bit */
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do 0, 1, 0, 0, 0, 0
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do 0, 1, 0, 1, 0, 1
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do 0, 1, 1, 0, 1, 1
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do 0, 1, 1, 1, 1, 1
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_bit_or_cc: /* bit |= CC */
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do 1, 1, 0, 0, 0, 0
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do 1, 1, 0, 1, 1, 1
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do 1, 1, 1, 0, 1, 0
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do 1, 1, 1, 1, 1, 1
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_cc_and_bit: /* CC &= bit */
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do 0, 2, 0, 0, 0, 0
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do 0, 2, 0, 1, 0, 0
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do 0, 2, 1, 0, 1, 0
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do 0, 2, 1, 1, 1, 1
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_bit_and_cc: /* bit &= CC */
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do 1, 2, 0, 0, 0, 0
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do 1, 2, 0, 1, 0, 1
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do 1, 2, 1, 0, 0, 0
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do 1, 2, 1, 1, 1, 1
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_cc_xor_bit: /* CC ^= bit */
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do 0, 3, 0, 0, 0, 0
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do 0, 3, 0, 1, 0, 1
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do 0, 3, 1, 0, 1, 1
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do 0, 3, 1, 1, 1, 0
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_bit_xor_cc: /* bit ^= CC */
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do 1, 3, 0, 0, 0, 0
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do 1, 3, 0, 1, 1, 1
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do 1, 3, 1, 0, 1, 0
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do 1, 3, 1, 1, 0, 1
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pass
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