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-rw-r--r--kernel/old/include/klib.h57
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diff --git a/kernel/old/include/klib.h b/kernel/old/include/klib.h
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+/*
+** @file klib.h
+**
+** @author Warren R. Carithers
+**
+** Additional support functions for the kernel.
+*/
+
+#ifndef KLIB_H_
+#define KLIB_H_
+
+#include <common.h>
+
+#ifndef ASM_SRC
+
+#include <x86/ops.h>
+
+/**
+** Name: put_char_or_code( ch )
+**
+** Description: Prints a character on the console, unless it
+** is a non-printing character, in which case its hex code
+** is printed
+**
+** @param ch The character to be printed
+*/
+void put_char_or_code(int ch);
+
+/**
+** Name: backtrace
+**
+** Perform a simple stack backtrace. Could be augmented to use the
+** symbol table to print function/variable names, etc., if so desired.
+**
+** @param ebp Initial EBP to use
+** @param args Number of function argument values to print
+*/
+void backtrace(uint32_t *ebp, uint_t args);
+
+/**
+** Name: kpanic
+**
+** Kernel-level panic routine
+**
+** usage: kpanic( msg )
+**
+** Prefix routine for panic() - can be expanded to do other things
+** (e.g., printing a stack traceback)
+**
+** @param msg[in] String containing a relevant message to be printed,
+** or NULL
+*/
+void kpanic(const char *msg);
+
+#endif /* !ASM_SRC */
+
+#endif