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authorhpa <hpa>2002-06-12 23:18:40 +0000
committerhpa <hpa>2002-06-12 23:18:40 +0000
commit2076ae80b6e59960cd15b6fb4ace19e5b8fcad3d (patch)
tree1378410d10f6af25aa81e2b6cd0737b22568f9dd /com32/include
parent55ddbef3b32a149c2ee1b37d3600ea5c4a1bf57c (diff)
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Move com32.h to a subdirectory; we expect to have more stuff here...
Diffstat (limited to 'com32/include')
-rw-r--r--com32/include/com32.h56
1 files changed, 56 insertions, 0 deletions
diff --git a/com32/include/com32.h b/com32/include/com32.h
new file mode 100644
index 00000000..4b7266fd
--- /dev/null
+++ b/com32/include/com32.h
@@ -0,0 +1,56 @@
+/* ----------------------------------------------------------------------- *
+ * Not Copyright 2002 H. Peter Anvin
+ * This file is in the public domain.
+ * ----------------------------------------------------------------------- */
+
+/*
+ * com32.h
+ *
+ * Common declarations for com32 programs.
+ */
+
+#ifndef _COM32_H
+#define _COM32_H
+
+#include <stdint.h>
+
+/*
+ * This structure defines the register frame used by the
+ * system call interface.
+ *
+ * The syscall interface is:
+ *
+ * __syscall(<interrupt #>, <source regs>, <return regs>)
+ */
+typedef union {
+ uint32_t l;
+ uint16_t w[2];
+ uint8_t b[4];
+} reg32_t;
+
+typedef struct {
+ uint16_t gs; /* Offset 0 */
+ uint16_t fs; /* Offset 2 */
+ uint16_t es; /* Offset 4 */
+ uint16_t ds; /* Offset 6 */
+
+ reg32_t edi; /* Offset 8 */
+ reg32_t esi; /* Offset 12 */
+ reg32_t ebp; /* Offset 16 */
+ reg32_t _unused; /* Offset 20 */
+ reg32_t ebx; /* Offset 24 */
+ reg32_t edx; /* Offset 28 */
+ reg32_t ecx; /* Offset 32 */
+ reg32_t eax; /* Offset 36 */
+
+ reg32_t eflags; /* Offset 40 */
+} com32sys_t;
+
+/* The standard prototype for _start() */
+int _start(unsigned int __nargs,
+ char *__cmdline,
+ void (*__syscall)(uint8_t, com32sys_t *, com32sys_t *),
+ void *__bounce_ptr,
+ unsigned int __bounce_len);
+
+#endif /* _COM32_H */