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/##
Copyright 2021-2022 Kyle Gunger
This file is licensed under the CDDL 1.0 (the License)
and may only be used in accordance with the License.
You should have received a copy of the License with this
software/source code. If you did not, a copy can be found
at the following URL:
https://opensource.org/licenses/CDDL-1.0
THIS SOFTWARE/SOURCE CODE IS PROVIDED "AS IS" WITH NO
WARRANTY, GUARANTEE, OR CLAIM OF FITNESS FOR ANY PURPOSE
EXPRESS OR IMPLIED
#/
/; construct_statement({}uint8 base, {}{}uint8 args) [{}uint8]
/; loop (int i = 0; i < len args) [i++]
;add_strings(~base, ~(args{i}))
/; if (i < len args - 1)
;base.append(',')
;base.append(' ')
;/
;/
;base.append('\n')
;return base
;/
/; literal_num ({}uint8 num) [{}uint8]
;{}uint8 out = "$"
;add_strings(~out, ~num)
;return out
;/
/; add_asm ({}uint8 from, to) [{}uint8]
;return construct_statement("\tadd ", {from, to})
;/
/; sub_asm({}uint8 from, to) [{}uint8]
;return construct_statement("\tsub ", {from, to})
;/
/; push_asm ({}uint8 reg) [{}uint8]
;return construct_statement("\tpush ", {reg})
;/
/; pop_asm ({}uint8 reg) [{}uint8]
;return construct_statement("\tpop ", {reg})
;/
/; cmp_asm ({}uint8 a, b) [{}uint8]
;return construct_statement("\tcmp ", {a, b})
;/
/; mov_asm ({}uint8 a, b) [{}uint8]
;return construct_statement("\tmov ", {a, b})
;/
/; jmp_asm ({}uint8 pos) [{}uint8]
;return construct_statement("\tjmp ", {pos})
;/
/; call_asm ({}uint8 pos) [{}uint8]
;return construct_statement("\tcall ", {pos})
;/
/; cjmp_asm ({}uint8 suffix, pos) [{}uint8]
;{}uint8 p = "\tj"
;add_strings(~p, ~suffix)
;p.append(' ')
;return construct_statement(p, {pos})
;/
/; mem_offset ({}uint8 pos, offset, scale) [{}uint8]
;{}uint8 tmp = construct_statement("(", {pos, offset, scale})
;tmp{len tmp - 1} = ')'
;return tmp
;/
/; header_guard (~{}uint8 csec) [{}uint8]
;{}uint8 out = "", tmp = ""
;tmp = push_asm("%r8")
;add_strings(~out, ~tmp)
;tmp = push_asm("%r9")
;add_strings(~out, ~tmp)
;tmp = push_asm("%r10")
;add_strings(~out, ~tmp)
;tmp = push_asm("%r11")
;add_strings(~out, ~tmp)
;tmp = push_asm("%r12")
;add_strings(~out, ~tmp)
;tmp = push_asm("%r13")
;add_strings(~out, ~tmp)
;tmp = push_asm("%r14")
;add_strings(~out, ~tmp)
;tmp = push_asm("%r15")
;add_strings(~out, ~tmp)
;add_strings(csec, ~out)
;/
/; tail_guard (~{}uint8 csec) [{}uint8]
;{}uint8 out = "", tmp = ""
;tmp = pop_asm("%r15")
;add_strings(~out, ~tmp)
;tmp = pop_asm("%r14")
;add_strings(~out, ~tmp)
;tmp = pop_asm("%r13")
;add_strings(~out, ~tmp)
;tmp = pop_asm("%r12")
;add_strings(~out, ~tmp)
;tmp = pop_asm("%r11")
;add_strings(~out, ~tmp)
;tmp = pop_asm("%r10")
;add_strings(~out, ~tmp)
;tmp = pop_asm("%r9")
;add_strings(~out, ~tmp)
;tmp = pop_asm("%r8")
;add_strings(~out, ~tmp)
;add_strings(csec, ~out)
;/
/; is_common_reg ({}uint8 n) [bool]
;return string_equate(n, "ax") || string_equate(n, "bx") || string_equate(n, "cx") || string_equate(n, "dx")
|| string_equate(n, "sp") || string_equate(n, "bp") || string_equate(n, "si") || string_equate(n, "di")
|| string_equate(n, "8") || string_equate(n, "9") || string_equate(n, "10") || string_equate(n, "11")
|| string_equate(n, "12") || string_equate(n, "13") || string_equate(n, "14") || string_equate(n, "15")
;/
/# Accepted common names:
# - ax
# - bx
# - cx
# - dx
# - si
# - di
# - bp
# - sp
# - 8-15
#/
/; get_reg (uint size, {}uint8 common) [{}uint8]
;{}uint8 out = "%"
/; if (common{0} !< 'a')
/; if (size == 1)
/; if(common{1} == 'x')
;common{1} = 'l'
;; else
;common.append('l')
;/
;; else if (size == 4)
;out.append('e')
;; else if (size == 8)
;out.append('r')
;/
;add_strings(~out, ~common)
;; else
;{}uint8 out = "r"
;add_strings(~out, ~common)
/; if (size == 1)
;out.append('b')
;; else if (size == 2)
;out.append('w')
;; else if (size == 4)
;out.append('d')
;/
;return out
;/
;return out
;/
/; make_label ({}uint8 func_name, func_place, ~{}uint8 csec)
;func_name.append("_")
;add_strings(~func_name, ~func_place)
;func_name.append(':')
;func_name.append('\n')
;add_strings(csec, ~func_name)
;/
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