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Diffstat (limited to 'sim/testsuite/bfin/cc-astat-bits.s')
| -rw-r--r-- | sim/testsuite/bfin/cc-astat-bits.s | 101 |
1 files changed, 101 insertions, 0 deletions
diff --git a/sim/testsuite/bfin/cc-astat-bits.s b/sim/testsuite/bfin/cc-astat-bits.s new file mode 100644 index 0000000..1c7d485 --- /dev/null +++ b/sim/testsuite/bfin/cc-astat-bits.s @@ -0,0 +1,101 @@ +# Blackfin testcase for setting all ASTAT bits via CC +# mach: bfin + +# We encode the opcodes directly since we test reserved bits +# which lack an insn in the ISA for it. It's a 16bit insn; +# the low 8 bits are always 0x03 while the encoding for the +# high 8 bits are: +# bit 7 - direction +# 0: CC=...; +# 1: ...=CC; +# bit 6/5 - operation +# 0: = assignment +# 1: | bit or +# 2: & bit and +# 3: ^ bit xor +# bit 4-0 - the bit in ASTAT to access + + .include "testutils.inc" + + .macro _do dir:req, op:req, bit:req, bit_in:req, cc_in:req, bg_val:req, bit_out:req, cc_out:req + /* CC = CC; is invalid, so skip it */ + .if \bit != 5 + + /* Calculate the before and after ASTAT values */ + imm32 R1, (\bg_val & ~((1 << \bit) | (1 << 5))) | (\bit_in << \bit) | (\cc_in << 5); + imm32 R3, (\bg_val & ~((1 << \bit) | (1 << 5))) | (\bit_out << \bit) | (\cc_out << 5); + + /* Test the actual opcode */ + ASTAT = R1; + .byte (\dir << 7) | (\op << 5) | \bit + .byte 0x03 + R2 = ASTAT; + + /* Make sure things line up */ + CC = R3 == R2; + IF !CC JUMP 1f; + JUMP 2f; +1: fail +2: + .endif + + /* Recurse through all the bits */ + .if \bit > 0 + _do \dir, \op, \bit - 1, \bit_in, \cc_in, \bg_val, \bit_out, \cc_out + .endif + .endm + + /* Test different background fields on ASTAT */ + .macro do dir:req, op:req, bit_in:req, cc_in:req, bit_out:req, cc_out:req + _do \dir, \op, 31, \bit_in, \cc_in, 0, \bit_out, \cc_out + _do \dir, \op, 31, \bit_in, \cc_in, -1, \bit_out, \cc_out + .endm + + start + nop; + +_cc_eq_bit: /* CC = bit */ + do 0, 0, 0, 0, 0, 0 + do 0, 0, 0, 1, 0, 0 + do 0, 0, 1, 0, 1, 1 + do 0, 0, 1, 1, 1, 1 +_bit_eq_cc: /* bit = CC */ + do 1, 0, 0, 0, 0, 0 + do 1, 0, 0, 1, 1, 1 + do 1, 0, 1, 0, 0, 0 + do 1, 0, 1, 1, 1, 1 + +_cc_or_bit: /* CC |= bit */ + do 0, 1, 0, 0, 0, 0 + do 0, 1, 0, 1, 0, 1 + do 0, 1, 1, 0, 1, 1 + do 0, 1, 1, 1, 1, 1 +_bit_or_cc: /* bit |= CC */ + do 1, 1, 0, 0, 0, 0 + do 1, 1, 0, 1, 1, 1 + do 1, 1, 1, 0, 1, 0 + do 1, 1, 1, 1, 1, 1 + +_cc_and_bit: /* CC &= bit */ + do 0, 2, 0, 0, 0, 0 + do 0, 2, 0, 1, 0, 0 + do 0, 2, 1, 0, 1, 0 + do 0, 2, 1, 1, 1, 1 +_bit_and_cc: /* bit &= CC */ + do 1, 2, 0, 0, 0, 0 + do 1, 2, 0, 1, 0, 1 + do 1, 2, 1, 0, 0, 0 + do 1, 2, 1, 1, 1, 1 + +_cc_xor_bit: /* CC ^= bit */ + do 0, 3, 0, 0, 0, 0 + do 0, 3, 0, 1, 0, 1 + do 0, 3, 1, 0, 1, 1 + do 0, 3, 1, 1, 1, 0 +_bit_xor_cc: /* bit ^= CC */ + do 1, 3, 0, 0, 0, 0 + do 1, 3, 0, 1, 1, 1 + do 1, 3, 1, 0, 1, 0 + do 1, 3, 1, 1, 0, 1 + + pass |