[GitHub] [nuttx] zyfeier commented on a diff in pull request #8042: Libc: Add more libc function for arm and riscv

[GitBox <gi...@apache.org>]

zyfeier commented on code in PR #8042:
URL: https://github.com/apache/nuttx/pull/8042#discussion_r1064306399


##########
libs/libc/machine/risc-v/gnu/asm.h:
##########
@@ -0,0 +1,52 @@
+/****************************************************************************
+ * libs/libc/machine/risc-v/gnu/asm.h
+ *
+ * Copyright (c) 2017  SiFive Inc. All rights reserved.
+ *
+ * This copyrighted material is made available to anyone wishing to use,
+ * modify, copy, or redistribute it subject to the terms and conditions
+ * of the FreeBSD License.   This program is distributed in the hope that
+ * it will be useful, but WITHOUT ANY WARRANTY expressed or implied,
+ * including the implied warranties of MERCHANTABILITY or FITNESS FOR
+ * A PARTICULAR PURPOSE.  A copy of this license is available at
+ *  http://www.opensource.org/licenses.
+ ****************************************************************************/
+
+#ifndef _ASM_H
+#define _ASM_H
+
+/****************************************************************************
+ * Included Files
+ ****************************************************************************/
+
+#include <nuttx/config.h>
+
+/****************************************************************************
+ * Pre-processor Definitions
+ ****************************************************************************/
+
+#ifdef CONFIG_ARCH_RV64
+#  define SZREG  8
+#  define REG_S sd
+#  define REG_L ld
+#elif defined(CONFIG_ARCH_RV32)
+#  define SZREG  4
+#  define REG_S sw
+#  define REG_L lw
+#endif
+
+#ifdef CONFIG_ARCH_QPFPU
+#  define SZFREG  16
+#  define FREG_S fsq
+#  define FREG_L flq
+#elif defined(CONFIG_ARCH_DPFPU)
+#  define SZFREG   8
+#  define FREG_S fsd
+#  define FREG_L fld
+#elif defined(CONFIG_ARCH_FPU)

Review Comment:
   These macros are only effective if fpu is supported.



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