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crt.s 13.50 KiB
/*
* C Runtime for l0dable.
*
* Also known as a startup file.
*
* We provide the following to l0dables:
* - calling GCC initializers.
* - an ISR vector.
*
* The stack is provided by l0der.
*/
.syntax unified
.arch armv7-m
/*
* ISR Vector.
*
* All of the following (apart from Reset_Handler, which calls main())
* are backed by weak referenced symbols, which you can override just
* by defining them in C code.
*/
.section .data
.align 2
.globl __isr_vector
__isr_vector:
.long 0 /* Top of Stack, overriden by l0der at load time */
.long Reset_Handler /* Reset Handler */
.long NMI_Handler /* NMI Handler */
.long HardFault_Handler /* Hard Fault Handler */
.long MemManage_Handler /* MPU Fault Handler */
.long BusFault_Handler /* Bus Fault Handler */
.long UsageFault_Handler /* Usage Fault Handler */
.long 0 /* Reserved */
.long 0 /* Reserved */
.long 0 /* Reserved */
.long 0 /* Reserved */
.long SVC_Handler /* SVCall Handler */
.long 0 /* Reserved */ /* @TODO: Is this the Debug Montior Interrupt? */
.long 0 /* Reserved */
.long PendSV_Handler /* PendSV Handler */
.long SysTick_Handler /* SysTick Handler */
/* Device-specific Interrupts */
.long PF_IRQHandler /* 0x10 0x0040 16: Power Fail */
.long WDT0_IRQHandler /* 0x11 0x0044 17: Watchdog 0 */
.long DefaultHandler /* 0x12 0x0048 18: USB, used by core0, unoverridable */
.long RTC_IRQHandler /* 0x13 0x004C 19: RTC */
.long TRNG_IRQHandler /* 0x14 0x0050 20: True Random Number Generator */
.long TMR0_IRQHandler /* 0x15 0x0054 21: Timer 0 */
.long TMR1_IRQHandler /* 0x16 0x0058 22: Timer 1 */
.long TMR2_IRQHandler /* 0x17 0x005C 23: Timer 2 */
.long TMR3_IRQHandler /* 0x18 0x0060 24: Timer 3*/
.long TMR4_IRQHandler /* 0x19 0x0064 25: Timer 4*/
.long TMR5_IRQHandler /* 0x1A 0x0068 26: Timer 5 */
.long RSV11_IRQHandler /* 0x1B 0x006C 27: Reserved */
.long RSV12_IRQHandler /* 0x1C 0x0070 28: Reserved */
.long I2C0_IRQHandler /* 0x1D 0x0074 29: I2C0 */
.long DefaultHandler /* 0x1E 0x0078 30: UART 0, used by core0, unoverridable */
.long UART1_IRQHandler /* 0x1F 0x007C 31: UART 1 */
.long SPI1_IRQHandler /* 0x20 0x0080 32: SPI1 */
.long SPI2_IRQHandler /* 0x21 0x0084 33: SPI2 */
.long RSV18_IRQHandler /* 0x22 0x0088 34: Reserved */
.long RSV19_IRQHandler /* 0x23 0x008C 35: Reserved */
.long ADC_IRQHandler /* 0x24 0x0090 36: ADC */
.long RSV21_IRQHandler /* 0x25 0x0094 37: Reserved */
.long RSV22_IRQHandler /* 0x26 0x0098 38: Reserved */
.long FLC0_IRQHandler /* 0x27 0x009C 39: Flash Controller */
.long DefaultHandler /* 0x28 0x00A0 40: GPIO0, used by core0, unoverridable */
.long DefaultHandler /* 0x29 0x00A4 41: GPIO2, used by core0, unoverridable */ .long RSV26_IRQHandler /* 0x2A 0x00A8 42: GPIO3 */
.long TPU_IRQHandler /* 0x2B 0x00AC 43: Crypto */
.long DMA0_IRQHandler /* 0x2C 0x00B0 44: DMA0 */
.long DMA1_IRQHandler /* 0x2D 0x00B4 45: DMA1 */
.long DMA2_IRQHandler /* 0x2E 0x00B8 46: DMA2 */
.long DMA3_IRQHandler /* 0x2F 0x00BC 47: DMA3 */
.long RSV32_IRQHandler /* 0x30 0x00C0 48: Reserved */
.long RSV33_IRQHandler /* 0x31 0x00C4 49: Reserved */
.long UART2_IRQHandler /* 0x32 0x00C8 50: UART 2 */
.long RSV35_IRQHandler /* 0x33 0x00CC 51: Reserved */
.long I2C1_IRQHandler /* 0x34 0x00D0 52: I2C1 */
.long RSV37_IRQHandler /* 0x35 0x00D4 53: Reserved */
.long SPIXFC_IRQHandler /* 0x36 0x00D8 54: SPI execute in place */
.long BTLE_TX_DONE_IRQHandler /* 0x37 0x00DC 55: BTLE TX Done */
.long BTLE_RX_RCVD_IRQHandler /* 0x38 0x00E0 56: BTLE RX Recived */
.long BTLE_RX_ENG_DET_IRQHandler /* 0x39 0x00E4 57: BTLE RX Energy Dectected */
.long BTLE_SFD_DET_IRQHandler /* 0x3A 0x00E8 58: BTLE SFD Detected */
.long BTLE_SFD_TO_IRQHandler /* 0x3B 0x00EC 59: BTLE SFD Timeout*/
.long BTLE_GP_EVENT_IRQHandler /* 0x3C 0x00F0 60: BTLE Timestamp*/
.long BTLE_CFO_IRQHandler /* 0x3D 0x00F4 61: BTLE CFO Done */
.long BTLE_SIG_DET_IRQHandler /* 0x3E 0x00F8 62: BTLE Signal Detected */
.long BTLE_AGC_EVENT_IRQHandler /* 0x3F 0x00FC 63: BTLE AGC Event */
.long BTLE_RFFE_SPIM_IRQHandler /* 0x40 0x0100 64: BTLE RFFE SPIM Done */
.long BTLE_TX_AES_IRQHandler /* 0x41 0x0104 65: BTLE TX AES Done */
.long BTLE_RX_AES_IRQHandler /* 0x42 0x0108 66: BTLE RX AES Done */
.long BTLE_INV_APB_ADDR_IRQHandler /* 0x43 0x010C 67: BTLE Invalid APB Address*/
.long BTLE_IQ_DATA_VALID_IRQHandler /* 0x44 0x0110 68: BTLE IQ Data Valid */
.long WUT_IRQHandler /* 0x45 0x0114 69: WUT Wakeup */
.long GPIOWAKE_IRQHandler /* 0x46 0x0118 70: GPIO Wakeup */
.long RSV55_IRQHandler /* 0x47 0x011C 71: Reserved */
.long SPI0_IRQHandler /* 0x48 0x0120 72: SPI AHB */
.long WDT1_IRQHandler /* 0x49 0x0124 73: Watchdog 1 */
.long RSV58_IRQHandler /* 0x4A 0x0128 74: Reserved */
.long PT_IRQHandler /* 0x4B 0x012C 75: Pulse train */
.long SDMA0_IRQHandler /* 0x4C 0x0130 76: Smart DMA 0 */
.long RSV61_IRQHandler /* 0x4D 0x0134 77: Reserved */
.long I2C2_IRQHandler /* 0x4E 0x0138 78: I2C 2 */
.long RSV63_IRQHandler /* 0x4F 0x013C 79: Reserved */
.long RSV64_IRQHandler /* 0x50 0x0140 80: Reserved */
.long RSV65_IRQHandler /* 0x51 0x0144 81: Reserved */
.long SDHC_IRQHandler /* 0x52 0x0148 82: SDIO/SDHC */
.long OWM_IRQHandler /* 0x53 0x014C 83: One Wire Master */
.long DMA4_IRQHandler /* 0x54 0x0150 84: DMA4 */
.long DMA5_IRQHandler /* 0x55 0x0154 85: DMA5 */
.long DMA6_IRQHandler /* 0x56 0x0158 86: DMA6 */
.long DMA7_IRQHandler /* 0x57 0x015C 87: DMA7 */
.long DMA8_IRQHandler /* 0x58 0x0160 88: DMA8 */
.long DMA9_IRQHandler /* 0x59 0x0164 89: DMA9 */
.long DMA10_IRQHandler /* 0x5A 0x0168 90: DMA10 */
.long DMA11_IRQHandler /* 0x5B 0x016C 91: DMA11 */
.long DMA12_IRQHandler /* 0x5C 0x0170 92: DMA12 */
.long DMA13_IRQHandler /* 0x5D 0x0174 93: DMA13 */
.long DMA14_IRQHandler /* 0x5E 0x0178 94: DMA14 */
.long DMA15_IRQHandler /* 0x5F 0x017C 95: DMA15 */
.long USBDMA_IRQHandler /* 0x60 0x0180 96: USB DMA */
.long WDT2_IRQHandler /* 0x61 0x0184 97: Watchdog Timer 2 */
.long ECC_IRQHandler /* 0x62 0x0188 98: Error Correction */
.long DVS_IRQHandler /* 0x63 0x018C 99: DVS Controller */
.long SIMO_IRQHandler /* 0x64 0x0190 100: SIMO Controller */
.long RPU_IRQHandler /* 0x65 0x0194 101: RPU */ /* @TODO: Is this correct? */
.long AUDIO_IRQHandler /* 0x66 0x0198 102: Audio subsystem */
.long FLC1_IRQHandler /* 0x67 0x019C 103: Flash Control 1 */
.long RSV88_IRQHandler /* 0x68 0x01A0 104: UART 3 */
.long RSV89_IRQHandler /* 0x69 0x01A4 105: UART 4 */
.long RSV90_IRQHandler /* 0x6A 0x01A8 106: UART 5 */
.long RSV91_IRQHandler /* 0x6B 0x01AC 107: Camera IF */
.long RSV92_IRQHandler /* 0x6C 0x01B0 108: I3C */
.long HTMR0_IRQHandler /* 0x6D 0x01B4 109: HTmr */
.long HTMR1_IRQHandler /* 0x6E 0x01B8 109: HTmr */
/*
* Reset_Handler, or, l0dable entrypoint.
*/
.text
.thumb
.thumb_func
.align 2
Reset_Handler:
/* Call system initialization from l0dables/lib/hardware.c. */
blx SystemInit
/* Call GCC constructors. */
ldr r0, =__libc_init_array
blx r0
/* Jump to C code */
ldr r0, =main
blx r0
/*
* C code done, spin forever.
* TODO(q3k): let epicardium know we're done.
*/
.spin:
bl .spin
/*
* Used by __libc_init_array.
*/
.globl _init
_init:
bx lr
/*
* The default handler for all IRQs just spins forwever.
* TODO(q3k): let epicardium know we've reached an infinite loop due to
* an exception and/or unhandled IRQ, perhaps by splitting
* DefaultHandler into multiple handlers that report different
* error conditions to epicardium (eg. unhandled IRQ, fault, ...)
*/
.thumb_func
.type DefaultHandler, %function
DefaultHandler:
b .
.macro def_irq_handler handler_name
.weakref \handler_name, DefaultHandler
.endm
/*
* Declare all default ISRs.
*/
def_irq_handler NMI_Handler
def_irq_handler HardFault_Handler
def_irq_handler MemManage_Handler
def_irq_handler BusFault_Handler
def_irq_handler UsageFault_Handler
def_irq_handler SVC_Handler
def_irq_handler DebugMon_Handler
def_irq_handler PendSV_Handler
def_irq_handler PF_IRQHandler
def_irq_handler WDT0_IRQHandler
def_irq_handler RTC_IRQHandler
def_irq_handler TRNG_IRQHandler
def_irq_handler TMR0_IRQHandler
def_irq_handler TMR1_IRQHandler
def_irq_handler TMR2_IRQHandler
def_irq_handler TMR3_IRQHandler
def_irq_handler TMR4_IRQHandler def_irq_handler RSV11_IRQHandler
def_irq_handler RSV12_IRQHandler
def_irq_handler I2C0_IRQHandler
def_irq_handler UART1_IRQHandler
def_irq_handler SPI1_IRQHandler
def_irq_handler SPI2_IRQHandler
def_irq_handler RSV18_IRQHandler
def_irq_handler RSV19_IRQHandler
def_irq_handler ADC_IRQHandler
def_irq_handler RSV21_IRQHandler
def_irq_handler RSV22_IRQHandler
def_irq_handler FLC0_IRQHandler
def_irq_handler RSV26_IRQHandler
def_irq_handler TPU_IRQHandler
def_irq_handler DMA0_IRQHandler
def_irq_handler DMA1_IRQHandler
def_irq_handler DMA2_IRQHandler
def_irq_handler DMA3_IRQHandler
def_irq_handler RSV32_IRQHandler
def_irq_handler RSV33_IRQHandler
def_irq_handler UART2_IRQHandler
def_irq_handler RSV35_IRQHandler
def_irq_handler I2C1_IRQHandler
def_irq_handler RSV37_IRQHandler
def_irq_handler SPIXFC_IRQHandler
def_irq_handler BTLE_TX_DONE_IRQHandler
def_irq_handler BTLE_RX_RCVD_IRQHandler
def_irq_handler BTLE_RX_ENG_DET_IRQHandler
def_irq_handler BTLE_SFD_DET_IRQHandler
def_irq_handler BTLE_SFD_TO_IRQHandler
def_irq_handler BTLE_GP_EVENT_IRQHandler
def_irq_handler BTLE_CFO_IRQHandler
def_irq_handler BTLE_SIG_DET_IRQHandler
def_irq_handler BTLE_AGC_EVENT_IRQHandler
def_irq_handler BTLE_RFFE_SPIM_IRQHandler
def_irq_handler BTLE_TX_AES_IRQHandler
def_irq_handler BTLE_RX_AES_IRQHandler
def_irq_handler BTLE_INV_APB_ADDR_IRQHandler
def_irq_handler BTLE_IQ_DATA_VALID_IRQHandler
def_irq_handler WUT_IRQHandler
def_irq_handler GPIOWAKE_IRQHandler
def_irq_handler RSV55_IRQHandler
def_irq_handler SPI0_IRQHandler
def_irq_handler WDT1_IRQHandler
def_irq_handler RSV58_IRQHandler
def_irq_handler PT_IRQHandler
def_irq_handler SDMA0_IRQHandler
def_irq_handler RSV61_IRQHandler
def_irq_handler I2C2_IRQHandler
def_irq_handler RSV63_IRQHandler
def_irq_handler RSV64_IRQHandler
def_irq_handler RSV65_IRQHandler
def_irq_handler SDHC_IRQHandler
def_irq_handler OWM_IRQHandler
def_irq_handler DMA4_IRQHandler
def_irq_handler DMA5_IRQHandler
def_irq_handler DMA6_IRQHandler
def_irq_handler DMA7_IRQHandler
def_irq_handler DMA8_IRQHandler
def_irq_handler DMA9_IRQHandler
def_irq_handler DMA10_IRQHandler
def_irq_handler DMA11_IRQHandler
def_irq_handler DMA12_IRQHandler
def_irq_handler DMA13_IRQHandler
def_irq_handler DMA14_IRQHandler
def_irq_handler DMA15_IRQHandler
def_irq_handler USBDMA_IRQHandler
def_irq_handler WDT2_IRQHandler
def_irq_handler ECC_IRQHandler
def_irq_handler DVS_IRQHandler def_irq_handler SIMO_IRQHandler
def_irq_handler RPU_IRQHandler
def_irq_handler AUDIO_IRQHandler
def_irq_handler FLC1_IRQHandler
def_irq_handler RSV88_IRQHandler
def_irq_handler RSV89_IRQHandler
def_irq_handler RSV90_IRQHandler
def_irq_handler RSV91_IRQHandler
def_irq_handler RSV92_IRQHandler
def_irq_handler HTMR0_IRQHandler
def_irq_handler HTMR1_IRQHandler
.section .cinterp
.asciz "card10-l0dable"
.byte