6296d52ba6
This calling convention is used to define interrup handlers on MSP430 microcontrollers. Usage looks like this: ``` rust #[no_mangle] #[link_section = "__interrupt_vector_10"] pub static TIM0_VECTOR: unsafe extern "msp430-interrupt" fn() = tim0; unsafe extern "msp430-interrupt" fn tim0() { P1OUT.write(0x00); } ``` which generates the following assembly: ``` asm Disassembly of section __interrupt_vector_10: 0000fff2 <TIM0_VECTOR>: fff2: 10 c0 interrupt service routine at 0xc010 Disassembly of section .text: 0000c010 <_ZN3msp4tim017h3193b957fd6a4fd4E>: c010: c2 43 21 00 mov.b #0, &0x0021 ;r3 As==00 c014: 00 13 reti ... ```