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arm_smcc_1_0_*: Load a capability pointer from the stack for purecap. #1749

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Jul 14, 2023
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arm_smcc_1_0_*: Load a capability pointer from the stack for purecap. #1749

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6 changes: 3 additions & 3 deletions sys/dev/psci/smccc_arm64.S
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Original file line number Diff line number Diff line change
Expand Up @@ -107,10 +107,10 @@ ENTRY(arm_smccc_\insn)
#ifdef __CHERI_PURE_CAPABILITY__
restore_registers
#endif
ldr x4, [PTRN(sp)]
ldr PTR(4), [PTRN(sp)]
cbz x4, 1f
stp x0, x1, [PTR(4), #16 * 0]
stp x2, x3, [PTR(4), #16 * 1]
stp PTR(0), PTR(1), [PTR(4), #(2 * PTR_WIDTH) * 0]
stp PTR(2), PTR(3), [PTR(4), #(2 * PTR_WIDTH) * 1]
1: ret
END(arm_smccc_\insn)
.endm
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