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authorKees Cook <kees+treewide@kernel.org>2026-09-02 15:31:14 -0700
committerKees Cook <kees@kernel.org>2026-09-04 21:37:00 -0700
commit3a2c4d55e32ad65efebdb6de44eef3bfa08bb49d (patch)
treec65086f9bdcd48c6360fb7cb4598bca084da1f32 /arch/mips/math-emu/ieee754d.c
downloadlinux-stable-3a2c4d55e32ad65efebdb6de44eef3bfa08bb49d.tar.gz
linux-stable-3a2c4d55e32ad65efebdb6de44eef3bfa08bb49d.zip
treewide: refresh kmalloc_obj() conversionsgrafted
This is another run of the Coccinelle script for converting kmalloc() family of allocations to kmalloc_obj() via the existing rules in scripts/coccinelle/api/kmalloc_objs.cocci This catches both the set of kmalloc() uses added since the first kmalloc_obj() conversions in v7.0 and adds a large group missed in the first pass due to Coccinelle not interacting well with the cleanup.h scoped_...() family of macros[1]. I worked around this with spatch's "--macro-file" argument to a file with all the scoped_...() macros mapped to Coccinelle's YACFE_ITERATOR[2] as that was the closest viable control flow indicator I could find. Build tested allmodconfig on x86, arm64, arm, loongarch, mips, powerpc, riscv, and s390 with no new warnings. Link: https://lore.kernel.org/lkml/202609021314.8A9C0B8@keescook/ [1] Link: https://github.com/coccinelle/coccinelle/blob/master/standard.h [2] Signed-off-by: Kees Cook <kees+treewide@kernel.org>
Diffstat (limited to 'arch/mips/math-emu/ieee754d.c')
-rw-r--r--arch/mips/math-emu/ieee754d.c99
1 files changed, 99 insertions, 0 deletions
diff --git a/arch/mips/math-emu/ieee754d.c b/arch/mips/math-emu/ieee754d.c
new file mode 100644
index 000000000..586c4db2d
--- /dev/null
+++ b/arch/mips/math-emu/ieee754d.c
@@ -0,0 +1,99 @@
+// SPDX-License-Identifier: GPL-2.0-only
+/*
+ * Some debug functions
+ *
+ * MIPS floating point support
+ *
+ * Copyright (C) 1994-2000 Algorithmics Ltd.
+ *
+ * Nov 7, 2000
+ * Modified to build and operate in Linux kernel environment.
+ *
+ * Kevin D. Kissell, kevink@mips.com and Carsten Langgaard, carstenl@mips.com
+ * Copyright (C) 2000 MIPS Technologies, Inc. All rights reserved.
+ */
+
+#include <linux/types.h>
+#include <linux/printk.h>
+#include "ieee754.h"
+#include "ieee754sp.h"
+#include "ieee754dp.h"
+
+union ieee754dp ieee754dp_dump(char *m, union ieee754dp x)
+{
+ int i;
+
+ printk("%s", m);
+ printk("<%08x,%08x>\n", (unsigned) (x.bits >> 32),
+ (unsigned) x.bits);
+ printk("\t=");
+ switch (ieee754dp_class(x)) {
+ case IEEE754_CLASS_QNAN:
+ case IEEE754_CLASS_SNAN:
+ printk("Nan %c", DPSIGN(x) ? '-' : '+');
+ for (i = DP_FBITS - 1; i >= 0; i--)
+ printk("%c", DPMANT(x) & DP_MBIT(i) ? '1' : '0');
+ break;
+ case IEEE754_CLASS_INF:
+ printk("%cInfinity", DPSIGN(x) ? '-' : '+');
+ break;
+ case IEEE754_CLASS_ZERO:
+ printk("%cZero", DPSIGN(x) ? '-' : '+');
+ break;
+ case IEEE754_CLASS_DNORM:
+ printk("%c0.", DPSIGN(x) ? '-' : '+');
+ for (i = DP_FBITS - 1; i >= 0; i--)
+ printk("%c", DPMANT(x) & DP_MBIT(i) ? '1' : '0');
+ printk("e%d", DPBEXP(x) - DP_EBIAS);
+ break;
+ case IEEE754_CLASS_NORM:
+ printk("%c1.", DPSIGN(x) ? '-' : '+');
+ for (i = DP_FBITS - 1; i >= 0; i--)
+ printk("%c", DPMANT(x) & DP_MBIT(i) ? '1' : '0');
+ printk("e%d", DPBEXP(x) - DP_EBIAS);
+ break;
+ default:
+ printk("Illegal/Unknown IEEE754 value class");
+ }
+ printk("\n");
+ return x;
+}
+
+union ieee754sp ieee754sp_dump(char *m, union ieee754sp x)
+{
+ int i;
+
+ printk("%s=", m);
+ printk("<%08x>\n", (unsigned) x.bits);
+ printk("\t=");
+ switch (ieee754sp_class(x)) {
+ case IEEE754_CLASS_QNAN:
+ case IEEE754_CLASS_SNAN:
+ printk("Nan %c", SPSIGN(x) ? '-' : '+');
+ for (i = SP_FBITS - 1; i >= 0; i--)
+ printk("%c", SPMANT(x) & SP_MBIT(i) ? '1' : '0');
+ break;
+ case IEEE754_CLASS_INF:
+ printk("%cInfinity", SPSIGN(x) ? '-' : '+');
+ break;
+ case IEEE754_CLASS_ZERO:
+ printk("%cZero", SPSIGN(x) ? '-' : '+');
+ break;
+ case IEEE754_CLASS_DNORM:
+ printk("%c0.", SPSIGN(x) ? '-' : '+');
+ for (i = SP_FBITS - 1; i >= 0; i--)
+ printk("%c", SPMANT(x) & SP_MBIT(i) ? '1' : '0');
+ printk("e%d", SPBEXP(x) - SP_EBIAS);
+ break;
+ case IEEE754_CLASS_NORM:
+ printk("%c1.", SPSIGN(x) ? '-' : '+');
+ for (i = SP_FBITS - 1; i >= 0; i--)
+ printk("%c", SPMANT(x) & SP_MBIT(i) ? '1' : '0');
+ printk("e%d", SPBEXP(x) - SP_EBIAS);
+ break;
+ default:
+ printk("Illegal/Unknown IEEE754 value class");
+ }
+ printk("\n");
+ return x;
+}