chain.c32, libcom32: Move chs macros and chs typedef as disk_chs

Moving portions of chain.c32 into libcom32.

Signed-off-by: Shao Miller <shao.miller@yrdsb.edu.on.ca>

1 files changed, 2 insertions, 13 deletions

diff --git a/com32/modules/chain.c b/com32/modules/chain.c
index 6bf8827e..f631d6e5 100644
--- a/com32/modules/chain.c
+++ b/com32/modules/chain.c
@@ -147,23 +147,12 @@ static inline void error(const char *msg)
 
 static struct disk_info diskinfo;
 
-/*
- * CHS (cylinder, head, sector) value extraction macros.
- * Taken from WinVBlock.  Does not expand to an lvalue
-*/
-#define     chs_head(chs) chs[0]
-#define   chs_sector(chs) (chs[1] & 0x3F)
-#define chs_cyl_high(chs) (((uint16_t)(chs[1] & 0xC0)) << 2)
-#define  chs_cyl_low(chs) ((uint16_t)chs[2])
-#define chs_cylinder(chs) (chs_cyl_high(chs) | chs_cyl_low(chs))
-typedef uint8_t chs[3];
-
 /* A DOS partition table entry */
 struct part_entry {
     uint8_t active_flag;	/* 0x80 if "active" */
-    chs start;
+    disk_chs start;
     uint8_t ostype;
-    chs end;
+    disk_chs end;
     uint32_t start_lba;
     uint32_t length;
 } __attribute__ ((packed));