Merge pull request 'kernel: simplify PIE support' (#33) from Yatis/gint:dev into dev

Reviewed-on: https://git.planet-casio.com/Lephenixnoir/gint/pulls/33

fx9860g.ld.c

@@ -70,11 +70,11 @@ SECTIONS
 
 		_gint_exch_start = . ;
 		KEEP(*(.gint.exch))
-		_gint_exch_size = ABSOLUTE(. - _gint_exch_start);
+		_gint_exch_end = . ;
 
 		_gint_tlbh_start = . ;
 		KEEP(*(.gint.tlbh))
-		_gint_tlbh_size = ABSOLUTE(. - _gint_tlbh_start);
+		_gint_tlbh_end = . ;
 
 		*(.text .text.*)
 		*(C P)

fxcg50.ld.c

@@ -59,11 +59,11 @@ SECTIONS
 
 		_gint_exch_start = . ;
 		KEEP(*(.gint.exch))
-		_gint_exch_size = ABSOLUTE(. - _gint_exch_start);
+		_gint_exch_end = . ;
 
 		_gint_tlbh_start = . ;
 		KEEP(*(.gint.tlbh))
-		_gint_tlbh_size = ABSOLUTE(. - _gint_tlbh_start);
+		_gint_tlbh_end = . ;
 
 		*(.text .text.*)
 	} > rom

fxcp_hh2.ld.c

@@ -68,12 +68,12 @@ SECTIONS
 		. = ALIGN(0x10);
 		_gint_exch_start = . ;
 		*(.gint.exch)
-		_gint_exch_size = ABSOLUTE(. - _gint_exch_start);
+		_gint_exch_end = . ;
 
 		. = ALIGN(0x10);
 		_gint_tlbh_start = . ;
 		*(.gint.tlbh)
-		_gint_tlbh_size = ABSOLUTE(. - _gint_tlbh_start);
+		_gint_tlbh_end = . ;
 
 		*(.text .text.*)
 	} > ram AT> bin

src/kernel/kernel.c

@@ -76,9 +76,15 @@ void kinit(void)
 	#endif
 
 	/* Event handler entry points */
+	extern uint32_t gint_exch_start;
+	extern uint32_t gint_exch_end;
+	extern uint32_t gint_tlbh_start;
+	extern uint32_t gint_tlbh_end;
 	void *inth_entry = isSH3() ? gint_inth_7705 : gint_inth_7305;
-	uint32_t exch_size = (uint32_t)&gint_exch_size;
-	uint32_t tlbh_size = (uint32_t)&gint_tlbh_size;
+	uint32_t exch_size = \
+		(uint32_t)&gint_exch_end - (uint32_t)&gint_exch_start;
+	uint32_t tlbh_size = \
+		(uint32_t)&gint_tlbh_end - (uint32_t)&gint_tlbh_start;
 
 	/* Load the event handler entry points into memory */
 	memcpy((void *)VBR + 0x100, gint_exch, exch_size);

src/kernel/vbr.h

@@ -11,8 +11,4 @@ void gint_tlbh(void);
 void gint_inth_7705(void);
 void gint_inth_7305(void);
 
-/* Size of exception and TLB handlers */
-extern char gint_exch_size;
-extern char gint_tlbh_size;
-
 #endif /* GINT_CORE_VBR */