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| author | Sven Eisenhauer <sven@sven-eisenhauer.net> | 2023-11-10 15:11:48 +0100 |
|---|---|---|
| committer | Sven Eisenhauer <sven@sven-eisenhauer.net> | 2023-11-10 15:11:48 +0100 |
| commit | 33613a85afc4b1481367fbe92a17ee59c240250b (patch) | |
| tree | 670b842326116b376b505ec2263878912fca97e2 /Bachelor/Mikroprozessorsysteme2/ARM202U/INCLUDE/SETJMP.H | |
| download | Studium-master.tar.gz Studium-master.tar.bz2 | |
Diffstat (limited to 'Bachelor/Mikroprozessorsysteme2/ARM202U/INCLUDE/SETJMP.H')
| -rw-r--r-- | Bachelor/Mikroprozessorsysteme2/ARM202U/INCLUDE/SETJMP.H | 75 |
1 files changed, 75 insertions, 0 deletions
diff --git a/Bachelor/Mikroprozessorsysteme2/ARM202U/INCLUDE/SETJMP.H b/Bachelor/Mikroprozessorsysteme2/ARM202U/INCLUDE/SETJMP.H new file mode 100644 index 0000000..9550ef3 --- /dev/null +++ b/Bachelor/Mikroprozessorsysteme2/ARM202U/INCLUDE/SETJMP.H @@ -0,0 +1,75 @@ +#pragma force_top_level
+#pragma include_only_once
+
+/* setjmp.h: ANSI 'C' (X3J11 Oct 88) library header, section 4.6 */
+/* Copyright (C) Codemist Ltd., 1988 */
+/* Copyright (C) Advanced Risc Machines Ltd., 1991 */
+/* version 0.04 */
+
+/*
+ * setjmp.h declares two functions and one type, for bypassing the normal
+ * function call and return discipline (useful for dealing with unusual
+ * conditions encountered in a low-level function of a program).
+ */
+
+#ifndef __setjmp_h
+#define __setjmp_h
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+#ifdef __JMP_BUF_SIZE
+typedef int jmp_buf[__JMP_BUF_SIZE];
+#else
+typedef int jmp_buf[22]; /* size suitable for the ARM */
+#endif /* an array type suitable for holding the data */
+ /* needed to restore a calling environment. */
+
+/* setjmp is a macro so that it cannot be used other than directly called. */
+/* NB that ANSI declare that anyone who undefined the setjmp macro or uses */
+/* (or defines) the name setjmp without including this header will get */
+/* what they deserve. */
+
+#ifdef __STDC__
+/* -pcc mode doesn't allow circular definitions... */
+#define setjmp(jmp_buf) (setjmp(jmp_buf))
+#endif
+
+extern int setjmp(jmp_buf /*env*/);
+ /* Saves its calling environment in its jmp_buf argument, for later use
+ * by the longjmp function.
+ * Returns: If the return is from a direct invocation, the setjmp function
+ * returns the value zero. If the return from a call to the longjmp
+ * function, the setjmp function returns a non zero value.
+ */
+
+extern void longjmp(jmp_buf /*env*/, int /*val*/);
+ /* Restores the environment saved by the most recent call to setjmp in the
+ * same invocation of the program, with the corresponding jmp_buf argument.
+ * If there has been no such call, or if the function containing the call
+ * to setjmp has terminated execution (eg. with a return statement) in the
+ * interim, the behaviour is undefined.
+ * All accessible objects have values as of the time longjmp was called,
+ * except that the values of objects of automatic storage duration that do
+ * not have volatile type and have been changed between the setjmp and
+ * longjmp calls are indeterminate.
+ * As it bypasses the usual function call and return mechanism, the longjmp
+ * function shall execute correctly in contexts of interrupts, signals and
+ * any of their associated functions. However, if the longjmp function is
+ * invoked from a nested signal handler (that is, from a function invoked as
+ * a result of a signal raised during the handling of another signal), the
+ * behaviour is undefined.
+ * Returns: After longjmp is completed, program execution continues as if
+ * the corresponding call to setjmp had just returned the value
+ * specified by val. The longjmp function cannot cause setjmp to
+ * return the value 0; if val is 0, setjmp returns the value 1.
+ */
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif
+
+/* end of setjmp.h */
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