スキャッタロードでVFPへアクセスした時の対処。

git-svn-id: file:///Volumes/Transfer/gigaleak_20231201/2020-09-30%20-%20paladin.7z/paladin/ctr_firmware@147 b871894f-2f95-9b40-918c-086798483c85

trunk/bootrom/build/buildtools/commondefs.config

@@ -21,6 +21,7 @@ BROM_COMMONDEFS_CONFIG_ = TRUE
 #BROM_ENABLE_BOOTROM_WRITE = TRUE
 #BROM_DEV_EARLY_RELEASE = TRUE
 #BROM_DEF_LINK_SCATLD = TRUE
+BROM_ENABLE_SCATLD_VFP = TRUE
 #BROM_ENABLE_THREAD = TRUE
 
 ifdef BROM_ENABLE_BOOTROM_WRITE
@@ -35,6 +36,9 @@ endif
 ifdef BROM_ENABLE_THREAD
 MACRO_FLAGS	+= -DBROM_ENABLE_THREAD
 endif
+ifdef BROM_ENABLE_SCATLD_VFP
+MACRO_FLAGS	+= -DBROM_ENABLE_SCATLD_VFP
+endif
 
 #----------------------------------------------------------------------------
 endif	# BROM_COMMONDEFS_CONFIG_

trunk/bootrom/build/libraries/init/common/crt0_excp.c

@@ -39,6 +39,22 @@ LSYM(0)
         stm     r3!,{r0-r1}
         cmp     r3, r12
         blt     BSYM(0)
+
+#ifdef SDK_ARM11
+        // disable VFP
+        fmrx    r12, fpexc
+        bic     r12, r12, #HW_FPEXC_VFP_ENABLE
+        fmxr    fpexc, r12
+
+#ifdef BROM_ENABLE_SCATLD_VFP
+        // set undef inst handler
+        INASM_EXTERN( i_osUndefInstHandler )
+        ldr     r3, =HW_UDEF_VECTOR_BUF
+        ldr     r0, =i_osUndefInstHandler
+        str     r0, [r3]
+#endif // BROM_ENABLE_SCATLD_VFP
+#endif // SDK_ARM11
+
         bx      lr
 
 i_stupExcpVennerCode