Fixed the issue about push/pop of VFP register. #3127
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When the floating-point calculation is executed into the processing which is called from IRQ handlers, VFP register is overwritten. Therefore, we fixed the issue. we added the process to execute the saving (Push) and the returning (Pop) of VFP register in before and after the appropriate processing.
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Ports for Upcoming Targets Fixes and Changes 3127: Fixed the issue about push/pop of VFP register. ARMmbed/mbed-os#3127 3176: Modifying micro:bit pin names to mirror micro:bit edge connector ARMmbed/mbed-os#3176 3160: Fix wrong index at LPC43xx tx end ring assignment ARMmbed/mbed-os#3160 3217: Add I2C_ASYNCH capability for DISCO_F469NI ARMmbed/mbed-os#3217 3211: [NUC472/M453] Support single UART shared by multiple serial objects and other updates ARMmbed/mbed-os#3211 3198: NUCLEO_F410RB: Add I2C_ASYNCH capability ARMmbed/mbed-os#3198 3194: Update K64 sdk drivers ARMmbed/mbed-os#3194 3159: User trim values for NCS36510 ARMmbed/mbed-os#3159 3243: Fix make exporters compilation ARMmbed/mbed-os#3243 3231: STM32F3: DISCO_F303VC - Add missing UART and ADC pin muxing options ARMmbed/mbed-os#3231 3233: K20xx Calculate PWM clock relative to bus clock ARMmbed/mbed-os#3233 3237: Added back USART 6 pins ARMmbed/mbed-os#3237 3253: Fix default polarity on LPC43XX PWM driver ARMmbed/mbed-os#3253 3238: Dev i2c stm32f4hal ARMmbed/mbed-os#3238 3251: Dev stm32l0 cube v1.7.0 ARMmbed/mbed-os#3251 3252: [NORDIC - NRF51 - MBED 2] Fix non handled RTC IRQ ARMmbed/mbed-os#3252
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When the floating-point calculation is executed into the processing which is called from IRQ handlers, VFP register is overwritten.
Therefore, we fixed the issue. we added the process to execute the saving (Push) and the returning (Pop) of VFP register in before and after the appropriate processing.