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sys/smp: Fix loongarch64 AP trampoline register state at kernel entry

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Mintsuki
2026-03-18 11:14:11 +01:00
parent 98fd2b2150
commit 3cfb0f37f9
1 changed files with 7 additions and 3 deletions
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10
common/sys/smp_trampoline.asm_loongarch64
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@@ -42,7 +42,10 @@ smp_trampoline_start:
// Load the kernel-provided stack (reserved field). // Load the kernel-provided stack (reserved field).
ld.d $sp, $t1, 16 ld.d $sp, $t1, 16
// Match the other trampolines by zeroing non-essential registers. // Save entry point in $t0 (matching BSP convention).
move $t0, $t8
// Zero non-essential registers.
move $ra, $zero move $ra, $zero
move $tp, $zero move $tp, $zero
move $a1, $zero move $a1, $zero
@@ -52,7 +55,6 @@ smp_trampoline_start:
move $a5, $zero move $a5, $zero
move $a6, $zero move $a6, $zero
move $a7, $zero move $a7, $zero
move $t0, $zero
move $t1, $zero move $t1, $zero
move $t2, $zero move $t2, $zero
move $t3, $zero move $t3, $zero
@@ -60,6 +62,8 @@ smp_trampoline_start:
move $t5, $zero move $t5, $zero
move $t6, $zero move $t6, $zero
move $t7, $zero move $t7, $zero
move $t8, $zero
move $r21, $zero
move $fp, $zero move $fp, $zero
move $s0, $zero move $s0, $zero
move $s1, $zero move $s1, $zero
@@ -71,6 +75,6 @@ smp_trampoline_start:
move $s7, $zero move $s7, $zero
move $s8, $zero move $s8, $zero
jirl $zero, $t8, 0 jirl $zero, $t0, 0
.section .note.GNU-stack,"",%progbits .section .note.GNU-stack,"",%progbits