51 lines
1.3 KiB
ArmAsm
51 lines
1.3 KiB
ArmAsm
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.ifndef _primops_s_file
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_primops_s_file:
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.include "include/data.s"
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.macro .primop2 name
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# | arg1 | arg2 | -> cont
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.thunkcode \name
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# push a thunk for collecting the first arg and set it as continuation
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thunkto %rsi, $\name\()_step1, $3, 030(%rbp), %rbp, %rsi
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enter 0x10(%rbp) # evaluate arg1
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# arg1 -> | arg2 | ret | cont |
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.thunkcode \name\()_step1
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# this is guaranteed to be entered only once (it's a case cont), so we
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# can rewrite the thunk in place
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xchg %rsi, 020(%rbp) # store arg1, get arg 2
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movq $\name\()_fini, 0(%rbp) # continue with finishing
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xchg %rbp, %rsi # continue here, evaluate arg 2
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enter_rbp
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# arg2 -> | arg1 | ret | cont |
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.thunkcode \name\()_fini
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# at this point,
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# arg1 is pointed to by 020(%rbp)
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# arg2 is pointed to by %rsi
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.endm
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.macro primop2_ret_int val
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# TODO: try to generalize
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# the result should now be in %rax
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mov 030(%rbp), %rsi # save result to the original primop2 thunk
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movq \val, 010(%rsi)
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movq $INT_code, 0(%rsi)
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enter 040(%rbp) # eval cont, returning %rsi
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.endm
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.macro primop2_cont_indirect new
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# TODO: try to generalize
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mov 030(%rbp), %rdi # load the original thunk
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mov 040(%rbp), %rsi # set the continuation
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movq \new, 010(%rdi) # set the indirect to the new thunk
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movq $IND_code, 0(%rdi)
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enter \new # continue evaluating the new thunk
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.endm
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.endif # _primops_s_file
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