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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/EXAMPLES/ROM/SPRINTF.C | |
| download | Studium-33613a85afc4b1481367fbe92a17ee59c240250b.tar.gz Studium-33613a85afc4b1481367fbe92a17ee59c240250b.tar.bz2 | |
Diffstat (limited to 'Bachelor/Mikroprozessorsysteme2/ARM202U/EXAMPLES/ROM/SPRINTF.C')
| -rw-r--r-- | Bachelor/Mikroprozessorsysteme2/ARM202U/EXAMPLES/ROM/SPRINTF.C | 31 |
1 files changed, 31 insertions, 0 deletions
diff --git a/Bachelor/Mikroprozessorsysteme2/ARM202U/EXAMPLES/ROM/SPRINTF.C b/Bachelor/Mikroprozessorsysteme2/ARM202U/EXAMPLES/ROM/SPRINTF.C new file mode 100644 index 0000000..6a5d4c9 --- /dev/null +++ b/Bachelor/Mikroprozessorsysteme2/ARM202U/EXAMPLES/ROM/SPRINTF.C @@ -0,0 +1,31 @@ +#include <stdio.h>
+
+/* We use the following Debug Monitor SWIs to write things out
+ * in this example
+ */
+extern __swi(2) Write0(char *s); /* Write a string */
+
+/* The following symbols are defined by the linker and define
+ * various memory regions which may need to be copied or initialised
+ */
+extern char Image$$RO$$Base[];
+extern char Image$$RO$$Limit[];
+extern char Image$$RW$$Base[];
+
+/* We define some more meaningful names here */
+#define rom_code_base Image$$RO$$Base
+#define rom_data_base Image$$RO$$Limit
+#define ram_data_base Image$$RW$$Base
+
+void C_Entry(void)
+{
+ char s[80];
+
+ if (rom_data_base == ram_data_base) {
+ Write0("Warning: Image has been linked as an application. To link as a ROM image\r\n");
+ Write0(" link with the options -RO <rom-base> -RW <ram-base>\r\n");
+ }
+
+ sprintf(s, "ROM is at address %p, RAM is at address %p\n", rom_code_base, ram_data_base);
+ Write0(s);
+}
|