added CXXFLAGS to disable rtti and exceptions; added C++ support to header files; moved mm.c to mm.cc to use C++ functionality

git-svn-id: svn://anubis/hos/trunk@32 5b3e749e-e535-0410-8002-a9bb6afbdfca

kernel/Makefile

@@ -10,7 +10,7 @@ LDSCRIPT        := link.ld
 KERNEL          := hos
 export CPPFLAGS := -I$(HOS_TOPLEVEL) -I$(HOS_TOPLEVEL)/include
 export CFLAGS   := -Wall -O2
-export CXXFLAGS := -Wall -O2
+export CXXFLAGS := -Wall -O2 -fno-rtti -fno-exceptions
 export LDFLAGS  := -T $(LDSCRIPT) -Map $(KERNEL).map
 
 SUBDIRS         := boot mm

kernel/boot/k_early_panic.h

@@ -2,6 +2,14 @@
 #ifndef K_EARLY_PANIC_H
 #define K_EARLY_PANIC_H
 
+#ifdef __cplusplus
+extern "C" {
+#endif
+
 void k_early_panic(const char * msg);
 
+#ifdef __cplusplus
+}
+#endif
+
 #endif

kernel/include/hos_defines.h

@@ -2,6 +2,10 @@
 #ifndef HOS_DEFINES_H
 #define HOS_DEFINES_H
 
+#ifdef __cplusplus
+extern "C" {
+#endif
+
 #define HOS_KERNEL_OFFSET       0xE0000000
 
 #define PAGE_LOG_SIZE           12
@@ -20,4 +24,8 @@ extern  u8_t    _end;
 #define KERNEL_VIRTUAL_ADDRESS  (&_code)
 #define KERNEL_SIZE             ((&_end) - (&_code))
 
+#ifdef __cplusplus
+}
+#endif
+
 #endif

kernel/include/hos_types.h

@@ -2,6 +2,10 @@
 #ifndef HOS_TYPES_H
 #define HOS_TYPES_H
 
+#ifdef __cplusplus
+extern "C" {
+#endif
+
 typedef unsigned char       u8_t;
 typedef signed char         s8_t;
 typedef unsigned short      u16_t;
@@ -11,4 +15,8 @@ typedef signed int          s32_t;
 typedef unsigned long long  u64_t;
 typedef signed long long    s64_t;
 
+#ifdef __cplusplus
+}
+#endif
+
 #endif

kernel/include/multiboot.h

@@ -4,6 +4,10 @@
 
 #include "hos_types.h"
 
+#ifdef __cplusplus
+extern "C" {
+#endif
+
 /* The magic number for the Multiboot header. */
 #define MB_HEADER_MAGIC             0x1BADB002
 
@@ -142,4 +146,8 @@ typedef struct
     u16_t   dseg_len;
 } mb_apm_t;
 
+#ifdef __cplusplus
+}
+#endif
+
 #endif

kernel/mm/mm.cc

@@ -4,6 +4,8 @@
 
 #define MM_MAX_MMAP_ENTRIES 64
 
+extern "C" {
+
 pagedirectory_t page_directory __attribute__ ((aligned (4096)));
 
 static mm_mem_range_t mm_mmap_entries[MM_MAX_MMAP_ENTRIES];
@@ -41,14 +43,17 @@ void mm_bootstrap()
         k_early_panic("No mmap entries read from bootloader!");
     }
 
-    int mmap_idx, i;
+    for (int mmap_idx = 0; mmap_idx < mm_mmap_num_entries; mmap_idx++)
-    for (mmap_idx = 0; mmap_idx < mm_mmap_num_entries; mmap_idx++)
     {
     }
 
     /* Clear the page directory */
-    for (i = 0; i < sizeof(page_directory) / sizeof(page_directory[0]); i++)
+    for (unsigned int i = 0;
+         i < sizeof(page_directory) / sizeof(page_directory[0]);
+         i++)
     {
         page_directory[i] = 0;
     }
 }
+
+} /* extern "C" */

kernel/mm/mm.h

@@ -6,6 +6,10 @@
 #include "hos_defines.h"
 #include "multiboot.h"
 
+#ifdef __cplusplus
+extern "C" {
+#endif
+
 typedef u32_t pagedirectory_entry_t;
 
 typedef pagedirectory_entry_t
@@ -22,5 +26,9 @@ typedef struct
 void mm_record_mmap_entry(mb_mmap_t * mmap);
 void mm_bootstrap();
 
+#ifdef __cplusplus
+}
+#endif
+
 #endif