Move cdemu call interface and disk_ret helper code to disk.c.

Signed-off-by: Kevin O'Connor <kevin@koconnor.net>
diff --git a/src/block.c b/src/block.c
index aff263c..7892be5 100644
--- a/src/block.c
+++ b/src/block.c
@@ -7,7 +7,6 @@
 
 #include "biosvar.h" // GET_GLOBAL
 #include "block.h" // process_op
-#include "bregs.h" // struct bregs
 #include "hw/ata.h" // process_ata_op
 #include "hw/ahci.h" // process_ahci_op
 #include "hw/blockcmd.h" // cdb_*
@@ -280,36 +279,6 @@
 
 
 /****************************************************************
- * Return status functions
- ****************************************************************/
-
-void
-__disk_ret(struct bregs *regs, u32 linecode, const char *fname)
-{
-    u8 code = linecode;
-    if (regs->dl < EXTSTART_HD)
-        SET_BDA(floppy_last_status, code);
-    else
-        SET_BDA(disk_last_status, code);
-    if (code)
-        __set_code_invalid(regs, linecode, fname);
-    else
-        set_code_success(regs);
-}
-
-void
-__disk_ret_unimplemented(struct bregs *regs, u32 linecode, const char *fname)
-{
-    u8 code = linecode;
-    if (regs->dl < EXTSTART_HD)
-        SET_BDA(floppy_last_status, code);
-    else
-        SET_BDA(disk_last_status, code);
-    __set_code_unimplemented(regs, linecode, fname);
-}
-
-
-/****************************************************************
  * Extended Disk Drive (EDD) get drive parameters
  ****************************************************************/
 
diff --git a/src/block.h b/src/block.h
index 945e6fe..aa01ed7 100644
--- a/src/block.h
+++ b/src/block.h
@@ -99,20 +99,10 @@
 void map_floppy_drive(struct drive_s *drive);
 void map_hd_drive(struct drive_s *drive);
 void map_cd_drive(struct drive_s *drive);
-struct bregs;
-void __disk_ret(struct bregs *regs, u32 linecode, const char *fname);
-void __disk_ret_unimplemented(struct bregs *regs, u32 linecode
-                              , const char *fname);
 struct int13dpt_s;
 int fill_edd(u16 seg, struct int13dpt_s *param_far, struct drive_s *drive_gf);
 int process_op(struct disk_op_s *op);
 int send_disk_op(struct disk_op_s *op);
 int create_bounce_buf(void);
 
-// Helper function for setting up a return code.
-#define disk_ret(regs, code) \
-    __disk_ret((regs), (code) | (__LINE__ << 8), __func__)
-#define disk_ret_unimplemented(regs, code) \
-    __disk_ret_unimplemented((regs), (code) | (__LINE__ << 8), __func__)
-
 #endif // block.h
diff --git a/src/cdrom.c b/src/cdrom.c
index f0d8a1a..86e3f0c 100644
--- a/src/cdrom.c
+++ b/src/cdrom.c
@@ -132,23 +132,6 @@
     drive->sectors = (u64)-1;
 }
 
-// ElTorito - Terminate disk emu
-void
-cdemu_134b(struct bregs *regs)
-{
-    memcpy_far(regs->ds, (void*)(regs->si+0), SEG_LOW, &CDEmu, sizeof(CDEmu));
-
-    // If we have to terminate emulation
-    if (regs->al == 0x00) {
-        // FIXME ElTorito Various. Should be handled accordingly to spec
-        SET_LOW(CDEmu.media, 0x00); // bye bye
-
-        // XXX - update floppy/hd count.
-    }
-
-    disk_ret(regs, DISK_RET_SUCCESS);
-}
-
 
 /****************************************************************
  * CD booting
diff --git a/src/disk.c b/src/disk.c
index 635d7b9..2aadd8a 100644
--- a/src/disk.c
+++ b/src/disk.c
@@ -18,19 +18,53 @@
 
 
 /****************************************************************
- * Helper functions
+ * Return status functions
  ****************************************************************/
 
 static void
+__disk_ret(struct bregs *regs, u32 linecode, const char *fname)
+{
+    u8 code = linecode;
+    if (regs->dl < EXTSTART_HD)
+        SET_BDA(floppy_last_status, code);
+    else
+        SET_BDA(disk_last_status, code);
+    if (code)
+        __set_code_invalid(regs, linecode, fname);
+    else
+        set_code_success(regs);
+}
+
+static void
+__disk_ret_unimplemented(struct bregs *regs, u32 linecode, const char *fname)
+{
+    u8 code = linecode;
+    if (regs->dl < EXTSTART_HD)
+        SET_BDA(floppy_last_status, code);
+    else
+        SET_BDA(disk_last_status, code);
+    __set_code_unimplemented(regs, linecode, fname);
+}
+
+static void
 __disk_stub(struct bregs *regs, int lineno, const char *fname)
 {
     __warn_unimplemented(regs, lineno, fname);
     __disk_ret(regs, DISK_RET_SUCCESS | (lineno << 8), fname);
 }
 
+#define disk_ret(regs, code) \
+    __disk_ret((regs), (code) | (__LINE__ << 8), __func__)
+#define disk_ret_unimplemented(regs, code) \
+    __disk_ret_unimplemented((regs), (code) | (__LINE__ << 8), __func__)
 #define DISK_STUB(regs)                         \
     __disk_stub((regs), __LINE__, __func__)
 
+
+/****************************************************************
+ * Helper functions
+ ****************************************************************/
+
 // Get the cylinders/heads/sectors for the given drive.
 static struct chs_s
 getLCHS(struct drive_s *drive_gf)
@@ -608,6 +642,23 @@
     }
 }
 
+// ElTorito - Terminate disk emu
+static void
+cdemu_134b(struct bregs *regs)
+{
+    memcpy_far(regs->ds, (void*)(regs->si+0), SEG_LOW, &CDEmu, sizeof(CDEmu));
+
+    // If we have to terminate emulation
+    if (regs->al == 0x00) {
+        // FIXME ElTorito Various. Should be handled accordingly to spec
+        SET_LOW(CDEmu.media, 0x00); // bye bye
+
+        // XXX - update floppy/hd count.
+    }
+
+    disk_ret(regs, DISK_RET_SUCCESS);
+}
+
 
 /****************************************************************
  * Entry points
diff --git a/src/util.h b/src/util.h
index 74b58f4..493d01d 100644
--- a/src/util.h
+++ b/src/util.h
@@ -49,7 +49,6 @@
 struct disk_op_s;
 int process_cdemu_op(struct disk_op_s *op);
 void cdrom_prepboot(void);
-void cdemu_134b(struct bregs *regs);
 int cdrom_boot(struct drive_s *drive_g);
 
 // clock.c