From 76cb841cb886eef6b3bee341a2266c76578724ad Mon Sep 17 00:00:00 2001
From: Daniel Baumann <daniel.baumann@progress-linux.org>
Date: Mon, 6 May 2024 03:02:30 +0200
Subject: Adding upstream version 4.19.249.

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
---
 arch/powerpc/math-emu/fsqrt.c | 41 +++++++++++++++++++++++++++++++++++++++++
 1 file changed, 41 insertions(+)
 create mode 100644 arch/powerpc/math-emu/fsqrt.c

(limited to 'arch/powerpc/math-emu/fsqrt.c')

diff --git a/arch/powerpc/math-emu/fsqrt.c b/arch/powerpc/math-emu/fsqrt.c
new file mode 100644
index 000000000..054385903
--- /dev/null
+++ b/arch/powerpc/math-emu/fsqrt.c
@@ -0,0 +1,41 @@
+// 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>
+
+int
+fsqrt(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_D(frD, R);
+
+	return FP_CUR_EXCEPTIONS;
+}
-- 
cgit v1.2.3