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Diffstat (limited to 'libc/sysdeps/linux/arm/fpu_control.h')
-rw-r--r--libc/sysdeps/linux/arm/fpu_control.h29
1 files changed, 28 insertions, 1 deletions
diff --git a/libc/sysdeps/linux/arm/fpu_control.h b/libc/sysdeps/linux/arm/fpu_control.h
index 8c13ca3a3..31d81ea29 100644
--- a/libc/sysdeps/linux/arm/fpu_control.h
+++ b/libc/sysdeps/linux/arm/fpu_control.h
@@ -20,7 +20,34 @@
#ifndef _FPU_CONTROL_H
#define _FPU_CONTROL_H
-#ifdef __MAVERICK__
+#ifdef __VFP_FP__
+
+/* masking of interrupts */
+#define _FPU_MASK_IM 0x00000100 /* invalid operation */
+#define _FPU_MASK_ZM 0x00000200 /* divide by zero */
+#define _FPU_MASK_OM 0x00000400 /* overflow */
+#define _FPU_MASK_UM 0x00000800 /* underflow */
+#define _FPU_MASK_PM 0x00001000 /* inexact */
+
+/* Some bits in the FPSCR are not yet defined. They must be preserved when
+ modifying the contents. */
+#define _FPU_RESERVED 0x0e08e0e0
+#define _FPU_DEFAULT 0x00000000
+/* Default + exceptions enabled. */
+#define _FPU_IEEE (_FPU_DEFAULT | 0x00001f00)
+
+/* Type of the control word. */
+typedef unsigned int fpu_control_t;
+
+/* Macros for accessing the hardware control word. */
+/* This is fmrx %0, fpscr. */
+#define _FPU_GETCW(cw) \
+ __asm__ __volatile__ ("mrc p10, 7, %0, cr1, cr0, 0" : "=r" (cw))
+/* This is fmxr fpscr, %0. */
+#define _FPU_SETCW(cw) \
+ __asm__ __volatile__ ("mcr p10, 7, %0, cr1, cr0, 0" : : "r" (cw))
+
+#elif defined __MAVERICK__
/* DSPSC register: (from EP9312 User's Guide)
*