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Update startup_LPC11U68.cpp

pull/354/head
kazu 2014-06-16 02:14:41 +09:00
parent 5a7eac98b4
commit 31345c74c9
1 changed files with 21 additions and 0 deletions
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21
libraries/mbed/targets/cmsis/TARGET_NXP/TARGET_LPC11U6X/TOOLCHAIN_GCC_CR/TARGET_LPC11U68/startup_LPC11U68.cpp
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@ -5,6 +5,16 @@ extern "C" {
#define ALIAS(f) __attribute__ ((weak, alias (#f))) #define ALIAS(f) __attribute__ ((weak, alias (#f)))
#define AFTER_VECTORS __attribute__ ((section(".after_vectors")))void ResetISR(void); #define AFTER_VECTORS __attribute__ ((section(".after_vectors")))void ResetISR(void);
// Patch the AEABI integer divide functions to use MCU's romdivide library
#ifdef __USE_ROMDIVIDE
// Location in memory that holds the address of the ROM Driver table
#define PTR_ROM_DRIVER_TABLE ((unsigned int *)(0x1FFF1FF8))
// Variables to store addresses of idiv and udiv functions within MCU ROM
unsigned int *pDivRom_idiv;
unsigned int *pDivRom_uidiv;
#endif
extern unsigned int __data_section_table; extern unsigned int __data_section_table;
extern unsigned int __data_section_table_end; extern unsigned int __data_section_table_end;
extern unsigned int __bss_section_table; extern unsigned int __bss_section_table;
@ -147,6 +157,17 @@ AFTER_VECTORS void ResetISR(void) {
bss_init(ExeAddr, SectionLen); bss_init(ExeAddr, SectionLen);
} }
// Patch the AEABI integer divide functions to use MCU's romdivide library
#ifdef __USE_ROMDIVIDE
// Get address of Integer division routines function table in ROM
unsigned int *div_ptr = (unsigned int *)((unsigned int *)*(PTR_ROM_DRIVER_TABLE))[4];
// Get addresses of integer divide routines in ROM
// These address are then used by the code in aeabi_romdiv_patch.s
pDivRom_idiv = (unsigned int *)div_ptr[0];
pDivRom_uidiv = (unsigned int *)div_ptr[1];
#endif
SystemInit(); SystemInit();
if (software_init_hook) if (software_init_hook)
software_init_hook(); software_init_hook();