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[BZ #22142] powerpc: Fix the carry bit on mpn_[add|sub]_n on POWER7

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Fix the ifdef clause that was being used in the opposite way, setting
a wrong value of the carry bit.

This is also correcting 2 memory accesses that were mistakenly referring
to r0 while they were supposed to mean the immediate value 0.

	[BZ #22142]
	* stdio-common/tst-printf.c (fp_test): Add tests for DBL_MAX and
	-DBL_MAX.
	(do_test): Likewise.
	* stdio-common/tst-printf.sh: Likewise.
	* sysdeps/powerpc/powerpc64/power7/add_n.S: Invert the initial
	ifdef clause in order to set the carry bit right.  Replace r0 by
	0 without changing the behavior.
This commit is contained in:
Tulio Magno Quites Machado Filho
2017-10-13 15:44:39 -03:00
parent 006e766437
commit 179dcdb7af
4 changed files with 27 additions and 4 deletions
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4
stdio-common/tst-printf.c
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@@ -136,6 +136,8 @@ fp_test (void)
}
printf("%10s\n", (char *) NULL);
printf("%-10s\n", (char *) NULL);
printf("%.8f\n", DBL_MAX);
printf("%.8f\n", -DBL_MAX);
}
static int
@@ -181,6 +183,8 @@ I am ready for my first lesson today.";
printf("null string:\t\"%s\"\n", (char *)NULL);
printf("limited string:\t\"%.22s\"\n", longstr);
printf("a-style max:\t\"%a\"\n", DBL_MAX);
printf("a-style -max:\t\"%a\"\n", -DBL_MAX);
printf("e-style >= 1:\t\"%e\"\n", 12.34);
printf("e-style >= .1:\t\"%e\"\n", 0.1234);
printf("e-style < .1:\t\"%e\"\n", 0.001234);