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target-s390: Convert ADD LOGICAL CARRY and SUBTRACT LOGICAL BORROW

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I'm resonably certain that the carry/borrow-out condition for both
helpers was incorrect, failing to take into account the carry-in.
Adding the new CC_OP codes also allows removing the awkward interface
we used for the slb helpers.

Signed-off-by: Richard Henderson <rth@twiddle.net>
This commit is contained in:
Richard Henderson 2012-08-17 18:52:33 -07:00
parent 2b280b9708
commit 4e4bb43899
6 changed files with 157 additions and 206 deletions
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8
target-s390x/cpu.h
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@ -449,15 +449,19 @@ enum cc_op {
CC_OP_ADD_64, /* overflow on add (64bit) */
CC_OP_ADDU_64, /* overflow on unsigned add (64bit) */
CC_OP_ADDC_64, /* overflow on unsigned add-carry (64bit) */
CC_OP_SUB_64, /* overflow on subtraction (64bit) */
CC_OP_SUBU_64, /* overflow on unsigned subtraction (64bit) */
CC_OP_SUBB_64, /* overflow on unsigned sub-borrow (64bit) */
CC_OP_ABS_64, /* sign eval on abs (64bit) */
CC_OP_NABS_64, /* sign eval on nabs (64bit) */
CC_OP_ADD_32, /* overflow on add (32bit) */
CC_OP_ADDU_32, /* overflow on unsigned add (32bit) */
CC_OP_ADDC_32, /* overflow on unsigned add-carry (32bit) */
CC_OP_SUB_32, /* overflow on subtraction (32bit) */
CC_OP_SUBU_32, /* overflow on unsigned subtraction (32bit) */
CC_OP_SUBB_32, /* overflow on unsigned sub-borrow (32bit) */
CC_OP_ABS_32, /* sign eval on abs (64bit) */
CC_OP_NABS_32, /* sign eval on nabs (64bit) */
@ -494,14 +498,18 @@ static const char *cc_names[] = {
[CC_OP_LTGT0_64] = "CC_OP_LTGT0_64",
[CC_OP_ADD_64] = "CC_OP_ADD_64",
[CC_OP_ADDU_64] = "CC_OP_ADDU_64",
[CC_OP_ADDC_64] = "CC_OP_ADDC_64",
[CC_OP_SUB_64] = "CC_OP_SUB_64",
[CC_OP_SUBU_64] = "CC_OP_SUBU_64",
[CC_OP_SUBB_64] = "CC_OP_SUBB_64",
[CC_OP_ABS_64] = "CC_OP_ABS_64",
[CC_OP_NABS_64] = "CC_OP_NABS_64",
[CC_OP_ADD_32] = "CC_OP_ADD_32",
[CC_OP_ADDU_32] = "CC_OP_ADDU_32",
[CC_OP_ADDC_32] = "CC_OP_ADDC_32",
[CC_OP_SUB_32] = "CC_OP_SUB_32",
[CC_OP_SUBU_32] = "CC_OP_SUBU_32",
[CC_OP_SUBB_32] = "CC_OP_SUBB_32",
[CC_OP_ABS_32] = "CC_OP_ABS_32",
[CC_OP_NABS_32] = "CC_OP_NABS_32",
[CC_OP_COMP_32] = "CC_OP_COMP_32",