mirror of
https://github.com/cirosantilli/linux-kernel-module-cheat.git
synced 2026-01-23 02:05:57 +01:00
ba2976cc7f
baremetal: fix aarch64/no_bootloader/semihost_exit.S which was wrong because was using unset sp for register block. Tests needed urgently!!
38 lines
641 B
ArmAsm
38 lines
641 B
ArmAsm
/* https://github.com/cirosantilli/linux-kernel-module-cheat#arm-multicore */
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.global main
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main:
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mov r0, #0
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ldr r1, =spinlock
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str r0, [r1]
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/* Get CPU ID. */
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mrc p15, 0, r1, c0, c0, 5
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ands r1, r1, #3
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beq cpu0_only
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cpu1_only:
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mov r0, #1
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ldr r1, =spinlock
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str r0, [r1]
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dmb sy
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sev
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cpu1_sleep_forever:
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wfe
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b cpu1_sleep_forever
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cpu0_only:
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#if !defined(GEM5)
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/* PCSI CPU_ON. */
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ldr r0, =0x84000003
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mov r1, #1
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ldr r2, =cpu1_only
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mov r3, #0
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hvc 0
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#endif
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spinlock_start:
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ldr r0, spinlock
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wfe
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cmp r0, #0
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beq spinlock_start
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bx lr
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spinlock:
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.skip 4
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