summaryrefslogtreecommitdiffstats
path: root/arch/powerpc/math-emu/fsqrts.c
diff options
context:
space:
mode:
authorDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-07 18:49:45 +0000
committerDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-07 18:49:45 +0000
commit2c3c1048746a4622d8c89a29670120dc8fab93c4 (patch)
tree848558de17fb3008cdf4d861b01ac7781903ce39 /arch/powerpc/math-emu/fsqrts.c
parentInitial commit. (diff)
downloadlinux-2c3c1048746a4622d8c89a29670120dc8fab93c4.tar.xz
linux-2c3c1048746a4622d8c89a29670120dc8fab93c4.zip
Adding upstream version 6.1.76.upstream/6.1.76
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'arch/powerpc/math-emu/fsqrts.c')
-rw-r--r--arch/powerpc/math-emu/fsqrts.c42
1 files changed, 42 insertions, 0 deletions
diff --git a/arch/powerpc/math-emu/fsqrts.c b/arch/powerpc/math-emu/fsqrts.c
new file mode 100644
index 000000000..1624f97c6
--- /dev/null
+++ b/arch/powerpc/math-emu/fsqrts.c
@@ -0,0 +1,42 @@
+// SPDX-License-Identifier: GPL-2.0
+#include <linux/types.h>
+#include <linux/errno.h>
+#include <linux/uaccess.h>
+
+#include <asm/sfp-machine.h>
+#include <math-emu/soft-fp.h>
+#include <math-emu/double.h>
+#include <math-emu/single.h>
+
+int
+fsqrts(void *frD, void *frB)
+{
+ FP_DECL_D(B);
+ FP_DECL_D(R);
+ FP_DECL_EX;
+
+#ifdef DEBUG
+ printk("%s: %p %p %p %p\n", __func__, frD, frB);
+#endif
+
+ FP_UNPACK_DP(B, frB);
+
+#ifdef DEBUG
+ printk("B: %ld %lu %lu %ld (%ld)\n", B_s, B_f1, B_f0, B_e, B_c);
+#endif
+
+ if (B_s && B_c != FP_CLS_ZERO)
+ FP_SET_EXCEPTION(EFLAG_VXSQRT);
+ if (B_c == FP_CLS_NAN)
+ FP_SET_EXCEPTION(EFLAG_VXSNAN);
+
+ FP_SQRT_D(R, B);
+
+#ifdef DEBUG
+ printk("R: %ld %lu %lu %ld (%ld)\n", R_s, R_f1, R_f0, R_e, R_c);
+#endif
+
+ __FP_PACK_DS(frD, R);
+
+ return FP_CUR_EXCEPTIONS;
+}