91 lines
2.2 KiB
ArmAsm
91 lines
2.2 KiB
ArmAsm
.section .text
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.globl _start
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.align 4
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_start:
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cspecialr ct0, pcc
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# Use csetaddr to build a stack capability
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li t0, 0x80001000 # fixed top-of-stack address
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csetaddr csp, ct0, t0
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# bound it to 8 bytes (size of dword)
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li t2, 8
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csetbounds csp, csp, t2
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li t5, 4
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# cincoffsetimm csp, csp, 10
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candperm csp, csp, t5
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# Read bounds
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# cgetbase t3, csp
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cld t0, 0(csp)
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# ----------------------------------------------------------------
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# Use csetaddr to build a stack capability
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# li t1, 0x80006000 # fixed top-of-stack address
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# csetaddr ca1, ct0, t1
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# bound it to 8 bytes (size of dword)
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# li t1, 8
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# csetbounds ca1, ca1, t1
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# cincoffsetimm ca1, ca1, 8
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# Read bounds
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# cgetbase t3, csp
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# cld t0, 0(ca1)
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# ----------------------------------------------------------------
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# Use csetaddr to build a stack capability
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# li t1, 0x80008000 # fixed top-of-stack address
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# csetaddr ca2, ct0, t1
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# bound it to 8 bytes (size of dword)
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# li t1, 8
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# csetbounds ca2, ca2, t1
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# cincoffsetimm ca2, ca2, 6
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# Read bounds
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# cgetbase t3, csp
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# cld t0, 0(ca2)
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# ----------------------------------------------------------------
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# Use csetaddr to build a stack capability
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# li t1, 0x80009000 # fixed top-of-stack address
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# csetaddr ca3, ct0, t1
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# bound it to 8 bytes (size of dword)
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# li t1, 8
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# csetbounds ca3, ca3, t1
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# cincoffsetimm ca3, ca3, 6
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# Read bounds
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# cgetbase t3, csp
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# cld t0, 0(ca3)
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# ----------------------------------------------------------------
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# Use csetaddr to build a stack capability
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# li t1, 0x80002000 # fixed top-of-stack address
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# csetaddr ca4, ct0, t1
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# bound it to 8 bytes (size of dword)
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# li t1, 8
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# csetbounds ca4, ca4, t1
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# cincoffsetimm ca4, ca4, 6
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# Read bounds
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# cgetbase t3, csp
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# cld t0, 0(ca4)
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# ----------------------------------------------------------------
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# derive capability from PCC
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# csetaddr c1, ct0, t0
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# la t0, tohost
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li t1, 1
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csd t1, 0(c1)
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