mirror of
https://github.com/fluencelabs/wasmer
synced 2024-12-05 02:20:19 +00:00
128 lines
1.7 KiB
ArmAsm
128 lines
1.7 KiB
ArmAsm
# NOTE: Keep this consistent with `fault.rs`.
|
|
|
|
.globl run_on_alternative_stack
|
|
run_on_alternative_stack:
|
|
# (stack_end, stack_begin)
|
|
# We need to ensure 16-byte alignment here.
|
|
pushq %r15
|
|
pushq %r14
|
|
pushq %r13
|
|
pushq %r12
|
|
pushq %rbx
|
|
pushq %rbp
|
|
movq %rsp, -16(%rdi)
|
|
|
|
leaq run_on_alternative_stack.returning(%rip), %rax
|
|
movq %rax, -24(%rdi)
|
|
|
|
movq %rsi, %rsp
|
|
|
|
movq (%rsp), %xmm0
|
|
add $8, %rsp
|
|
|
|
movq (%rsp), %xmm1
|
|
add $8, %rsp
|
|
|
|
movq (%rsp), %xmm2
|
|
add $8, %rsp
|
|
|
|
movq (%rsp), %xmm3
|
|
add $8, %rsp
|
|
|
|
movq (%rsp), %xmm4
|
|
add $8, %rsp
|
|
|
|
movq (%rsp), %xmm5
|
|
add $8, %rsp
|
|
|
|
movq (%rsp), %xmm6
|
|
add $8, %rsp
|
|
|
|
movq (%rsp), %xmm7
|
|
add $8, %rsp
|
|
|
|
movq (%rsp), %xmm8
|
|
add $8, %rsp
|
|
|
|
movq (%rsp), %xmm9
|
|
add $8, %rsp
|
|
|
|
movq (%rsp), %xmm10
|
|
add $8, %rsp
|
|
|
|
movq (%rsp), %xmm11
|
|
add $8, %rsp
|
|
|
|
movq (%rsp), %xmm12
|
|
add $8, %rsp
|
|
|
|
movq (%rsp), %xmm13
|
|
add $8, %rsp
|
|
|
|
movq (%rsp), %xmm14
|
|
add $8, %rsp
|
|
|
|
movq (%rsp), %xmm15
|
|
add $8, %rsp
|
|
|
|
popq %rbp
|
|
popq %rax
|
|
popq %rbx
|
|
popq %rcx
|
|
popq %rdx
|
|
popq %rdi
|
|
popq %rsi
|
|
popq %r8
|
|
popq %r9
|
|
popq %r10
|
|
popq %r11
|
|
popq %r12
|
|
popq %r13
|
|
popq %r14
|
|
popq %r15
|
|
retq
|
|
|
|
run_on_alternative_stack.returning:
|
|
movq (%rsp), %rsp
|
|
popq %rbp
|
|
popq %rbx
|
|
popq %r12
|
|
popq %r13
|
|
popq %r14
|
|
popq %r15
|
|
retq
|
|
|
|
# For switching into a backend without information about where registers are preserved.
|
|
.globl register_preservation_trampoline
|
|
register_preservation_trampoline:
|
|
subq $8, %rsp
|
|
pushq %rax
|
|
pushq %rcx
|
|
pushq %rdx
|
|
pushq %rdi
|
|
pushq %rsi
|
|
pushq %r8
|
|
pushq %r9
|
|
pushq %r10
|
|
|
|
callq get_boundary_register_preservation@PLT
|
|
|
|
# Keep this consistent with BoundaryRegisterPreservation
|
|
movq %r15, 0(%rax)
|
|
movq %r14, 8(%rax)
|
|
movq %r13, 16(%rax)
|
|
movq %r12, 24(%rax)
|
|
movq %rbx, 32(%rax)
|
|
|
|
popq %r10
|
|
popq %r9
|
|
popq %r8
|
|
popq %rsi
|
|
popq %rdi
|
|
popq %rdx
|
|
popq %rcx
|
|
popq %rax
|
|
addq $8, %rsp
|
|
|
|
jmpq *%rax
|