Initial checkin of toy OS project.HEADmaster

3 files changed, 186 insertions, 0 deletions

diff --git a/kernel/rtl/Makefile b/kernel/rtl/Makefile
new file mode 100644
index 0000000..1767c0a
--- /dev/null
+++ b/kernel/rtl/Makefile
@@ -0,0 +1,19 @@
+CC=			gcc
+CFLAGS= 		-Wall -imacros ../defines -I../inc
+OBJS=			string.o memory.o
+RM=			/bin/rm
+NASM=			nasm
+NASMFLAGS=
+
+.SUFFIXES: .c .o .asm
+
+all: $(OBJS)
+
+.c.o:
+	$(CC) $(CFLAGS) -c $<
+
+.asm.o:
+	$(NASM) $(NASMFLAGS) -o $*.o $<
+
+clean:
+	$(RM) -f $(OBJS) *~ #*# .#*
diff --git a/kernel/rtl/memory.c b/kernel/rtl/memory.c
new file mode 100644
index 0000000..f4f845e
--- /dev/null
+++ b/kernel/rtl/memory.c
@@ -0,0 +1,29 @@
+//+----------------------------------------------------------------------------
+//
+// File:     memory.c
+//
+// Module:   
+//
+// Synopsis: 
+//
+// Copyright (C) Scott Gasch
+//
+// Created:  sgasch  5 Jul 2003
+//
+//+----------------------------------------------------------------------------
+
+#include "kernel.h"
+
+void 
+RtlSetMemory(void *pStart, 
+             BYTE bFill,
+             ULONG uLength)
+{
+    BYTE *p = (BYTE *)pStart;
+
+    while(uLength > 0)
+    {
+        *p++ = bFill;
+        uLength--;
+    }
+}
diff --git a/kernel/rtl/string.c b/kernel/rtl/string.c
new file mode 100644
index 0000000..da42000
--- /dev/null
+++ b/kernel/rtl/string.c
@@ -0,0 +1,138 @@
+//+----------------------------------------------------------------------------
+//
+// File:     string.c
+//
+// Module:   
+//
+// Synopsis: 
+//
+// Copyright (C) 2003 Scott Gasch
+//
+// Created:  sgasch  5 Jul 2003
+//
+//+----------------------------------------------------------------------------
+
+#include "kernel.h"
+
+CHAR *
+strncpy(CHAR *pDest, CHAR *pSrc, SIZE_T u)
+{
+    char *p = pDest;
+    ULONG v = 0;
+
+    while ((v < u) && (*pSrc))
+    {
+        *pDest = *pSrc;
+        pDest++; pSrc++; v++;
+    }
+
+    //
+    // If we ran out of space, null terminate the dest buffer
+    //
+    if ((*pSrc) && (u > 0))
+    {
+        *(pDest - 1) = 0;
+    }
+    
+    return(p);
+}
+
+SIZE_T
+strlen(CHAR *p)
+{
+    ULONG i = 0;
+    while(*p)
+    {
+        i++;
+        p++;
+    }
+    return(i);
+}
+
+CHAR *
+RtlIntToAscii(INT i,
+              CHAR *buf,
+              ULONG uBufLen,
+              ULONG uBase)
+{
+    CHAR *p = (buf + uBufLen);
+    ULONG uSpaceLeft = uBufLen;
+    ULONG uMagnitude;
+    BOOL fNeg = FALSE;
+
+    //
+    // null terminate the workspace buffer
+    //
+    if (uSpaceLeft == 0) 
+    {
+        return(NULL);
+    }
+    *p = '\0';
+    p--;
+    uSpaceLeft--;
+
+    //
+    // Get the int's sign
+    //
+    if (i < 0)
+    {
+        fNeg = TRUE;
+        uMagnitude = -i;
+    }
+    else
+    {
+        uMagnitude = i;
+    }
+    
+    //
+    // Based on base, do the conversion.  Build the string backwards from
+    // less significant digits.  Stop if we finish or if we run out of
+    // uSpaceLeft.
+    //
+    switch(uBase)
+    {
+        case 10:
+            do
+            {
+                *p = (uMagnitude % 10) + '0';
+                p--;
+                uSpaceLeft--;
+                uMagnitude /= 10;
+            } 
+            while((uSpaceLeft > 0) && (uMagnitude != 0));
+            break;
+        case 16:
+            do
+            {
+                *p = "0123456789ABCDEF"[uMagnitude & 15];
+                p--;
+                uSpaceLeft--;
+                uMagnitude >>= 4;
+            } 
+            while((uSpaceLeft > 0) && (uMagnitude != 0));
+            break;
+        case 8:
+            do 
+            {
+                *p = (uMagnitude & 7) + '0';
+                p--;
+                uSpaceLeft--;
+                uMagnitude >>= 3;
+            } 
+            while((uSpaceLeft > 0) && (uMagnitude != 0));
+            break;
+    }
+
+    if (TRUE == fNeg)
+    {
+        if (uSpaceLeft > 0)
+        {
+            *p = '-';
+        }
+    }
+    else
+    {
+        p++;
+    }
+    return(p);
+}