1 files changed, 97 insertions, 0 deletions
diff --git a/contrib/syslinux-4.02/sample/filetest.c b/contrib/syslinux-4.02/sample/filetest.c
new file mode 100644
index 0000000..2ef772a
--- /dev/null
+++ b/contrib/syslinux-4.02/sample/filetest.c
@@ -0,0 +1,97 @@
+#include <com32.h>
+#include <stdarg.h>
+
+#define NULL ((void *)0)
+int printf(const char *, ...);
+int putchar(int);
+
+static inline void memset(void *buf, int ch, unsigned int len)
+{
+    asm volatile ("cld; rep; stosb":"+D" (buf), "+c"(len):"a"(ch):"memory");
+}
+
+static void strcpy(char *dst, const char *src)
+{
+    while (*src)
+	*dst++ = *src++;
+
+    *dst = '\0';
+}
+
+static void printregs(const com32sys_t * r)
+{
+    printf("eflags = %08x  ds = %04x  es = %04x  fs = %04x  gs = %04x\n"
+	   "eax = %08x  ebx = %08x  ecx = %08x  edx = %08x\n"
+	   "ebp = %08x  esi = %08x  edi = %08x  esp = %08x\n",
+	   r->eflags.l, r->ds, r->es, r->fs, r->gs,
+	   r->eax.l, r->ebx.l, r->ecx.l, r->edx.l,
+	   r->ebp.l, r->esi.l, r->edi.l, r->_unused_esp.l);
+}
+
+int __start(void)
+{
+    unsigned int ax, cx, si, t;
+    com32sys_t inreg, outreg;
+    char *p;
+
+    /* Test null system call */
+    inreg.eflags.l = 0xffffffff;
+    inreg.eax.l = 0x11110000;
+    inreg.ecx.l = 0x22222222;
+    inreg.edx.l = 0x33333333;
+    inreg.ebx.l = 0x44444444;
+    inreg.ebp.l = 0x55555555;
+    inreg.esi.l = 0x66666666;
+    inreg.edi.l = 0x77777777;
+    inreg.ds = 0xaaaa;
+    inreg.es = 0xbbbb;
+    inreg.fs = 0xcccc;
+    inreg.gs = 0xdddd;
+    printregs(&inreg);
+    __com32.cs_intcall(0x22, &inreg, &outreg);
+    printregs(&outreg);
+    printf("----\n");
+
+    memset(&inreg, 0, sizeof inreg);
+    memset(&outreg, 0, sizeof outreg);
+    strcpy(__com32.cs_bounce, "test.txt");
+    inreg.eax.w[0] = 0x0006;	// Open file
+    inreg.esi.w[0] = OFFS(__com32.cs_bounce);
+    inreg.es = SEG(__com32.cs_bounce);
+    printregs(&inreg);
+    __com32.cs_intcall(0x22, &inreg, &outreg);
+    printregs(&outreg);
+    printf("----\n");
+
+    si = outreg.esi.w[0];	/* File handle */
+    cx = outreg.ecx.w[0];	/* Block size */
+    ax = outreg.eax.l;		/* File length */
+
+    while (si) {
+	/* We can only read 64K per call */
+	t = (ax > 65536) ? 65536 / cx : (ax + cx - 1) / cx;
+
+	memset(&inreg, 0, sizeof inreg);
+	inreg.esi.w[0] = si;
+	inreg.ecx.w[0] = t;	/* Block count */
+	inreg.eax.w[0] = 0x0007;	// Read file
+	inreg.ebx.w[0] = OFFS(__com32.cs_bounce);
+	inreg.es = SEG(__com32.cs_bounce);
+	printregs(&inreg);
+	__com32.cs_intcall(0x22, &inreg, &outreg);
+	printregs(&outreg);
+	printf("----\n");
+	si = outreg.esi.w[0];
+
+	/* Print the buffer */
+	t = (ax < 65536) ? ax : 65536;
+	p = __com32.cs_bounce;
+	while (t) {
+	    putchar(*p++);
+	    t--;
+	    ax--;
+	}
+    }
+
+    return 0;
+}