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adds other files necessary to build smp library

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Eyck-Alexander Jentzsch
2026-03-12 15:21:18 +01:00
parent 1117527a02
commit cca56f89c6
14 changed files with 1716 additions and 15 deletions
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43
port/threadx_smp/src/tx_thread_smp_unprotect.S Normal file
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#include "tx_port.h"
.section .text
.align 2
.global _tx_thread_smp_unprotect
.type _tx_thread_smp_unprotect, @function
_tx_thread_smp_unprotect:
/* Lockout interrupts while protection state is updated. */
csrci mstatus, 0x08 // Lockout interrupts
/* Pickup the current hart ID. */
csrr t1, mhartid // Pickup hart ID
/* Build address of protection structure. */
la t2, _tx_thread_smp_protection
/* Only the owning hart may release the protection. */
LWU t3, 4(t2) // Pickup owning hart
bne t1, t3, _still_protected // Not owner, skip release
/* Pickup and decrement the protection count. */
LWU t3, 8(t2) // Pickup protection count
beqz t3, _still_protected // Already cleared
addi t3, t3, -1 // Decrement protection count
sw t3, 8(t2) // Store new count
bnez t3, _still_protected // Still nested, stay protected
/* If preemption is disabled, keep protection in force. */
la t4, _tx_thread_preempt_disable
LWU t5, 0(t4) // Pickup preempt disable
bnez t5, _still_protected // Skip protection release
/* Release the protection. */
li t3, -1 // Invalid owner value
sw t3, 4(t2) // Mark owning hart invalid
fence rw, rw // Ensure shared accesses complete
amoswap.w.rl x0, x0, (t2) // Release protection flag
_still_protected:
csrw mstatus, a0 // Restore interrupt posture
ret