Struct StartupCode 

pub struct StartupCode {
    pub stack_top: u32,
    pub entry_point: u32,
    pub data_start: u32,
    pub data_end: u32,
    pub data_load: u32,
    pub bss_start: u32,
    pub bss_end: u32,
    pub enable_fpu: bool,
    pub memory_size: u32,
}

Cortex-M startup code generator

Fields

stack_top: u32

Stack top address

entry_point: u32

Entry point (main function)

data_start: u32

Data section start (in RAM)

data_end: u32

Data section end (in RAM)

data_load: u32

Data load address (in flash)

bss_start: u32

BSS section start

bss_end: u32

BSS section end

enable_fpu: bool

Enable FPU (set CPACR for CP10+CP11 full access)

memory_size: u32

Linear memory size in bytes (stored in R10 for memory.size)

Implementations

impl StartupCode

pub fn minimal(entry_point: u32) -> Self

Create minimal startup that just jumps to entry point

pub fn generate_thumb(&self) -> Vec<u8>

Generate Thumb-2 startup code (reset handler)

This generates minimal startup code that:

1. Optionally enables FPU (CPACR setup for CP10+CP11)
2. Sets up the stack pointer (already done by hardware from vector table)
3. Initializes R11 as linear memory base (0x20000000)
4. Calls the entry point
5. Loops forever if entry returns

pub fn generate_default_handler() -> Vec<u8>

Generate a default exception handler (infinite loop)