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compound assignment operators

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This commit is contained in:
pommicket 2022-02-13 10:06:41 -05:00
parent 07faf56f7d
commit 6b42f4198f
3 changed files with 212 additions and 2 deletions
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208
05/codegen.b
View file

@ -1476,6 +1476,16 @@ function generate_push_expression
if c == EXPRESSION_LSHIFT goto generate_lshift
if c == EXPRESSION_RSHIFT goto generate_rshift
if c == EXPRESSION_ASSIGN goto generate_assign
if c == EXPRESSION_ASSIGN_ADD goto generate_assign_add
if c == EXPRESSION_ASSIGN_SUB goto generate_assign_sub
if c == EXPRESSION_ASSIGN_MUL goto generate_assign_mul
if c == EXPRESSION_ASSIGN_DIV goto generate_assign_div
if c == EXPRESSION_ASSIGN_REMAINDER goto generate_assign_remainder
if c == EXPRESSION_ASSIGN_LSHIFT goto generate_assign_lshift
if c == EXPRESSION_ASSIGN_RSHIFT goto generate_assign_rshift
if c == EXPRESSION_ASSIGN_AND goto generate_assign_and
if c == EXPRESSION_ASSIGN_OR goto generate_assign_or
if c == EXPRESSION_ASSIGN_XOR goto generate_assign_xor
if c == EXPRESSION_DEREFERENCE goto generate_dereference
if c == EXPRESSION_SUBSCRIPT goto generate_subscript
if c == EXPRESSION_ADDRESS_OF goto generate_address_of
@ -1581,6 +1591,196 @@ function generate_push_expression
:str_exprend_wrong
string Internal compiler error: expression_get_end disagrees with generate_push_expression.
byte 0
:generate_assign_add
expr += 8
p = expression_get_end(expr)
p = generate_push_expression_casted(statement, p, type)
generate_push_address_of_expression(statement, expr)
expr = p
emit_mov_rax_qword_rsp() ; mov rax, [rsp] (address)
emit_push_rax() ; push rax
generate_stack_dereference(statement, type)
emit_mov_rax_qword_rsp_plus_imm32(16) ; mov rax, [rsp+16] (addend)
emit_push_rax() ; push rax
generate_stack_add(statement, type, type, type)
emit_mov_rax_qword_rsp_plus_imm32(8) ; mov rax, [rsp+8] (address)
emit_push_rax() ; push rax
generate_stack_assign(statement, type)
emit_mov_rax_qword_rsp() ; mov rax, [rsp] (result)
emit_add_rsp_imm32(16) ; add rsp, 16 (pop address, addend)
emit_mov_qword_rsp_rax() ; mov [rsp], rax
return expr
:generate_assign_sub
expr += 8
p = expression_get_end(expr)
p = generate_push_expression_casted(statement, p, type)
generate_push_address_of_expression(statement, expr)
expr = p
emit_mov_rax_qword_rsp() ; mov rax, [rsp] (address)
emit_push_rax() ; push rax
generate_stack_dereference(statement, type)
emit_mov_rax_qword_rsp_plus_imm32(16) ; mov rax, [rsp+16] (2nd operand)
emit_push_rax() ; push rax
generate_stack_sub(statement, type, type, type)
emit_mov_rax_qword_rsp_plus_imm32(8) ; mov rax, [rsp+8] (address)
emit_push_rax() ; push rax
generate_stack_assign(statement, type)
emit_mov_rax_qword_rsp() ; mov rax, [rsp] (result)
emit_add_rsp_imm32(16) ; add rsp, 16 (pop address, 2nd operand)
emit_mov_qword_rsp_rax() ; mov [rsp], rax
return expr
:generate_assign_mul
expr += 8
p = expression_get_end(expr)
p = generate_push_expression_casted(statement, p, type)
generate_push_address_of_expression(statement, expr)
expr = p
emit_mov_rax_qword_rsp() ; mov rax, [rsp] (address)
emit_push_rax() ; push rax
generate_stack_dereference(statement, type)
emit_mov_rax_qword_rsp_plus_imm32(16) ; mov rax, [rsp+16] (2nd operand)
emit_push_rax() ; push rax
generate_stack_mul(statement, type)
emit_mov_rax_qword_rsp_plus_imm32(8) ; mov rax, [rsp+8] (address)
emit_push_rax() ; push rax
generate_stack_assign(statement, type)
emit_mov_rax_qword_rsp() ; mov rax, [rsp] (result)
emit_add_rsp_imm32(16) ; add rsp, 16 (pop address, 2nd operand)
emit_mov_qword_rsp_rax() ; mov [rsp], rax
return expr
:generate_assign_div
expr += 8
p = expression_get_end(expr)
p = generate_push_expression_casted(statement, p, type)
generate_push_address_of_expression(statement, expr)
expr = p
emit_mov_rax_qword_rsp() ; mov rax, [rsp] (address)
emit_push_rax() ; push rax
generate_stack_dereference(statement, type)
emit_mov_rax_qword_rsp_plus_imm32(16) ; mov rax, [rsp+16] (2nd operand)
emit_push_rax() ; push rax
generate_stack_div(statement, type)
emit_mov_rax_qword_rsp_plus_imm32(8) ; mov rax, [rsp+8] (address)
emit_push_rax() ; push rax
generate_stack_assign(statement, type)
emit_mov_rax_qword_rsp() ; mov rax, [rsp] (result)
emit_add_rsp_imm32(16) ; add rsp, 16 (pop address, 2nd operand)
emit_mov_qword_rsp_rax() ; mov [rsp], rax
return expr
:generate_assign_remainder
expr += 8
p = expression_get_end(expr)
p = generate_push_expression_casted(statement, p, type)
generate_push_address_of_expression(statement, expr)
expr = p
emit_mov_rax_qword_rsp() ; mov rax, [rsp] (address)
emit_push_rax() ; push rax
generate_stack_dereference(statement, type)
emit_mov_rax_qword_rsp_plus_imm32(16) ; mov rax, [rsp+16] (2nd operand)
emit_push_rax() ; push rax
generate_stack_remainder(statement, type)
emit_mov_rax_qword_rsp_plus_imm32(8) ; mov rax, [rsp+8] (address)
emit_push_rax() ; push rax
generate_stack_assign(statement, type)
emit_mov_rax_qword_rsp() ; mov rax, [rsp] (result)
emit_add_rsp_imm32(16) ; add rsp, 16 (pop address, 2nd operand)
emit_mov_qword_rsp_rax() ; mov [rsp], rax
return expr
:generate_assign_and
expr += 8
p = expression_get_end(expr)
p = generate_push_expression_casted(statement, p, type)
generate_push_address_of_expression(statement, expr)
expr = p
emit_mov_rax_qword_rsp() ; mov rax, [rsp] (address)
emit_push_rax() ; push rax
generate_stack_dereference(statement, type)
emit_mov_rax_qword_rsp_plus_imm32(16) ; mov rax, [rsp+16] (2nd operand)
emit_push_rax() ; push rax
generate_stack_bitwise_and(statement, type)
emit_mov_rax_qword_rsp_plus_imm32(8) ; mov rax, [rsp+8] (address)
emit_push_rax() ; push rax
generate_stack_assign(statement, type)
emit_mov_rax_qword_rsp() ; mov rax, [rsp] (result)
emit_add_rsp_imm32(16) ; add rsp, 16 (pop address, 2nd operand)
emit_mov_qword_rsp_rax() ; mov [rsp], rax
return expr
:generate_assign_or
expr += 8
p = expression_get_end(expr)
p = generate_push_expression_casted(statement, p, type)
generate_push_address_of_expression(statement, expr)
expr = p
emit_mov_rax_qword_rsp() ; mov rax, [rsp] (address)
emit_push_rax() ; push rax
generate_stack_dereference(statement, type)
emit_mov_rax_qword_rsp_plus_imm32(16) ; mov rax, [rsp+16] (2nd operand)
emit_push_rax() ; push rax
generate_stack_bitwise_or(statement, type)
emit_mov_rax_qword_rsp_plus_imm32(8) ; mov rax, [rsp+8] (address)
emit_push_rax() ; push rax
generate_stack_assign(statement, type)
emit_mov_rax_qword_rsp() ; mov rax, [rsp] (result)
emit_add_rsp_imm32(16) ; add rsp, 16 (pop address, 2nd operand)
emit_mov_qword_rsp_rax() ; mov [rsp], rax
return expr
:generate_assign_xor
expr += 8
p = expression_get_end(expr)
p = generate_push_expression_casted(statement, p, type)
generate_push_address_of_expression(statement, expr)
expr = p
emit_mov_rax_qword_rsp() ; mov rax, [rsp] (address)
emit_push_rax() ; push rax
generate_stack_dereference(statement, type)
emit_mov_rax_qword_rsp_plus_imm32(16) ; mov rax, [rsp+16] (2nd operand)
emit_push_rax() ; push rax
generate_stack_bitwise_xor(statement, type)
emit_mov_rax_qword_rsp_plus_imm32(8) ; mov rax, [rsp+8] (address)
emit_push_rax() ; push rax
generate_stack_assign(statement, type)
emit_mov_rax_qword_rsp() ; mov rax, [rsp] (result)
emit_add_rsp_imm32(16) ; add rsp, 16 (pop address, 2nd operand)
emit_mov_qword_rsp_rax() ; mov [rsp], rax
return expr
:generate_assign_lshift
expr += 8
p = expression_get_end(expr)
p = generate_push_expression_casted(statement, p, type)
generate_push_address_of_expression(statement, expr)
expr = p
emit_mov_rax_qword_rsp() ; mov rax, [rsp] (address)
emit_push_rax() ; push rax
generate_stack_dereference(statement, type)
emit_mov_rax_qword_rsp_plus_imm32(16) ; mov rax, [rsp+16] (2nd operand)
emit_push_rax() ; push rax
generate_stack_lshift(statement, type)
emit_mov_rax_qword_rsp_plus_imm32(8) ; mov rax, [rsp+8] (address)
emit_push_rax() ; push rax
generate_stack_assign(statement, type)
emit_mov_rax_qword_rsp() ; mov rax, [rsp] (result)
emit_add_rsp_imm32(16) ; add rsp, 16 (pop address, 2nd operand)
emit_mov_qword_rsp_rax() ; mov [rsp], rax
return expr
:generate_assign_rshift
expr += 8
p = expression_get_end(expr)
p = generate_push_expression_casted(statement, p, type)
generate_push_address_of_expression(statement, expr)
expr = p
emit_mov_rax_qword_rsp() ; mov rax, [rsp] (address)
emit_push_rax() ; push rax
generate_stack_dereference(statement, type)
emit_mov_rax_qword_rsp_plus_imm32(16) ; mov rax, [rsp+16] (2nd operand)
emit_push_rax() ; push rax
generate_stack_rshift(statement, type)
emit_mov_rax_qword_rsp_plus_imm32(8) ; mov rax, [rsp+8] (address)
emit_push_rax() ; push rax
generate_stack_assign(statement, type)
emit_mov_rax_qword_rsp() ; mov rax, [rsp] (result)
emit_add_rsp_imm32(16) ; add rsp, 16 (pop address, 2nd operand)
emit_mov_qword_rsp_rax() ; mov [rsp], rax
return expr
:generate_add
expr += 8
c = expr + 4 ; type of 1st operand
@ -2141,9 +2341,12 @@ function generate_code
local p_func
local end_addr
code_output = output_file_data + FUNCTIONS_ADDR
codegen_second_pass = 0
generate_functions()
end_addr = code_output - output_file_data
if end_addr ] FUNCTIONS_END goto too_much_code
code_output = output_file_data + FUNCTIONS_ADDR
codegen_second_pass = 1
generate_functions()
@ -2187,3 +2390,8 @@ function generate_code
:str_no_main_function
string Error: No main function.
byte 0
:too_much_code
die(.str_too_much_code)
:str_too_much_code
string Too much code for executable.
byte 0

1
05/constants.b
View file

@ -8,6 +8,7 @@
; you should be able to change these constants (in a way that's consistent) without breaking anything:
#define ENTRY_ADDR 0x200000
#define FUNCTIONS_ADDR 0x400000
#define FUNCTIONS_END 0x800000
#define TOTAL_CODE_SIZE 0x600000
#define RODATA_ADDR 0x800000
#define RODATA_SIZE 0x400000

5
05/main.c
View file

@ -12,7 +12,8 @@ long fibonacci(long x) {
}
int main(int argc, char **argv) {
long (*fp)(long) = factorial;
return (*fp)(6);
int x = 104;
x >>= 3;
return x;
}