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|
;struct Value {
bool
on_stack,
temp,
literal,
int
loc,
val,
VType
_type
}
;Value NV = {false, false, false, 0, 0, 0, {0, 0, "null", {}, {}}}
/; setup_stack_offset (int offset) [{}uint8]
;{}uint8 out = "$"
;{}uint8 tmp = string_from_int(offset)
;add_strings(~out, ~tmp)
;return mov_asm(out, "%rax")
;/
;{}charp general_stack_offset = "(%rsp, %rax, 1)"
# The temp registers in order
/; reg_by_num(int r) [{}uint8]
/; if (r == 0)
;return "ax"
;; if (r == 1)
;return "bx"
;; if (r == 2)
;return "cx"
;; if (r == 3)
;return "dx"
;; if (r == 4)
;return "si"
;; if (r == 5)
;return "di"
;; if (r == 6)
;return "bp"
;/
;return string_from_int(r)
;/
/; method Value
/; get_norm_loc [{}uint8]
/; if (self.on_stack)
;return general_stack_offset
;/
/; if (self.temp)
;return get_reg(self._type._size, reg_by_num(self.loc))
;; else
;return get_reg(self._type._size, reg_by_num(self.loc + 8))
;/
;return ""
;/
/; add_literal (int i) [{}uint8]
/; if (self.literal)
;self.val = self.val + i
;return ""
;; else if (!self.on_stack)
;{}uint8 reg = self.get_norm_loc()
;{}uint8 out = "\tadd $"
;{}uint8 tmp = string_from_int(i)
;add_strings(~out, ~tmp)
;out.append(',')
;out.append(' ')
;add_strings(~out, ~reg)
;return out
;/
;/
/; add_value (Value v) [{}uint8]
/; if (self.literal)
;self.val = self.val + v.val
;return ""
;; else if (!self.on_stack)
;{}uint8 tmp = self.get_norm_loc()
;{}uint8 out = "\tadd "
;add_strings(~out, ~tmp)
;out.append(',')
;out.append(' ')
;tmp = v.get_norm_loc()
;add_strings(~out, ~tmp)
;return out
;/
;/
/; sub_value (Value v) [{}uint8]
/; if (self.literal)
;self.val = self.val - v.val
;return ""
;/
;/
/; mul_literal (int i) [{}uint8]
/; if (self.literal)
;return ""
;/
;/
/; div_literal (int i) [{}uint8]
;/
/; mul_value (Value v) [{}uint8]
;/
/; div_value (int i) [{}uint8]
;/
/; deref_value [Value]
/; if (self._type.ptr == 0)
;/
;/
/; arr_value (int i) [Value]
/; if (self._type.ptr == 0)
;/
;/
/; copy_from_value (Value v)
;/
/; get_member_value ({}uint8 name) [Value]
;Value out = self
;/
/; update_loc(int offset)
/; if (self.on_stack)
;self.loc = self.loc + offset
;/
;/
;/
|
