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sprintf working! (but not snprintf ...)

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pommicket 2022-02-13 22:12:44 -05:00
parent 2fef698195
commit b9fd2a2b9c
7 changed files with 1724 additions and 65 deletions
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43
05/codegen.b
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@ -2741,18 +2741,25 @@ function generate_statement
continue_refs = malloc(8000)
break_refs = malloc(8000)
generate_push_expression_casted(statement, dat1, TYPE_VOID)
emit_add_rsp_imm32(8) ; void is stored as 8 bytes
if dat1 == 0 goto gen_for_no_expr1
generate_push_expression_casted(statement, dat1, TYPE_VOID)
emit_add_rsp_imm32(8) ; void is stored as 8 bytes
:gen_for_no_expr1
addr0 = code_output
p = dat2 + 4
generate_push_expression(statement, dat2)
generate_stack_compare_against_zero(statement, *4p)
emit_je_rel32(0) ; je +0 (temporary)
if dat2 == 0 goto gen_for_no_expr2
generate_push_expression(statement, dat2)
generate_stack_compare_against_zero(statement, *4p)
emit_je_rel32(0) ; je +0 (temporary)
:gen_for_no_dat2_cont
addr1 = code_output
generate_statement(dat4)
generate_statement(dat4) ; body
handle_refs(&continue_refs, prev_continue_refs, code_output)
generate_push_expression_casted(statement, dat3, TYPE_VOID)
emit_add_rsp_imm32(8) ; void is stored as 8 bytes
if dat3 == 0 goto gen_for_no_expr3
generate_push_expression_casted(statement, dat3, TYPE_VOID)
emit_add_rsp_imm32(8) ; void is stored as 8 bytes
:gen_for_no_expr3
emit_jmp_rel32(0) ; jmp +0 (temporary)
addr2 = code_output
handle_refs(&break_refs, prev_break_refs, addr2)
@ -2767,6 +2774,13 @@ function generate_statement
p = addr2 - 4
*4p = d
return
:gen_for_no_expr2
; we need to have a fake jump to be filled in here
; so let's make a jump that'll never happen
emit_zero_rax() ; xor eax, eax
emit_test_rax_rax() ; test rax, rax
emit_jne_rel32(0) ; jne +0 (temporary)
goto gen_for_no_dat2_cont
:gen_stmt_continue
if continue_refs == 0 goto continue_outside_of_loop
emit_jmp_rel32(0) ; jmp +0 (temporary)
@ -2889,6 +2903,8 @@ function generate_function
local out0
local n_stack_bytes
debug_putsln(function_name)
function_type = ident_list_lookup(function_types, function_name)
curr_function_return_type = functype_return_type(function_type)
@ -3015,11 +3031,13 @@ function generate_code
local end_addr
code_output = output_file_data + FUNCTIONS_ADDR
codegen_second_pass = 0
debug_puts(.str_first_pass)
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
debug_puts(.str_second_pass)
generate_functions()
; generate code at the entry point of the executable
local main_addr
@ -3066,3 +3084,12 @@ function generate_code
:str_too_much_code
string Too much code for executable.
byte 0
:str_first_pass
string First codegen pass...
byte 0xa
byte 0
:str_second_pass
string Second codegen pass...
byte 0xa
byte 0