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.cpu cortex-m4
.syntax unified
.thumb
.text
.global DebugMon_Handler
.type DebugMon_Handler, %function
DebugMon_Handler:
mrs r0,psp ;// Get process stack
sub r1,r0,#(4*13) ;// Make space for saved state
msr psp,r1 ;// Ensure PSP is up to date
mov r12,r0 ;// R12 = stack
mov r1,#1 ;// R1 = exception state type
mrs r2,ipsr ;// R2 = vector number
mrs r3,basepri ;// R3 = basepri
stmfd r0!,{r1-r12,lr} ;// Push type, vector, basepri, r4-11
mov r4,r0 ;// R4 = saved state pointer
bl rt_hw_debugmon_exception
mov r0,r4 ;// R4 = saved state pointer
ldmfd r0!,{r1-r12,lr} ;// Pop type, vec, basepri, registers and LR
msr psp,r0 ;// Restore PSP
msr basepri,r3 ;// Restore basepri
bx lr ;// Return
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