dawids/lang-bootstrap
1
0
Fork 0
Code Issues Pull requests Projects Releases Packages Wiki Activity Actions

first C hello world!

Browse source
This commit is contained in:
pommicket 2022-02-13 15:07:26 -05:00
parent 6acd24e315
commit 2fef698195
7 changed files with 68 additions and 47 deletions
Download patch file Download diff file Expand all files Collapse all files

4
05/codegen.b
View file

@ -762,7 +762,6 @@ function generate_cast_top_of_stack
if *1to == TYPE_VOID goto gen_cast_to_void
if *1from == TYPE_VOID goto bad_gen_cast ; cast from void to something - that's bad
if *1from == TYPE_ARRAY goto bad_gen_cast ; cast array (this probably won't ever happen because of decaying)
if *1to == TYPE_ARRAY goto bad_gen_cast ; cast to array
if *1from == TYPE_FUNCTION goto bad_gen_cast ; shouldn't happen
if *1to == TYPE_FUNCTION goto bad_gen_cast ; shouldn't happen
@ -793,6 +792,7 @@ function generate_cast_top_of_stack
emit_add_rsp_imm32(c)
return
:gen_cast_to_integer
if *1from == TYPE_ARRAY goto return_0 ; e.g. (void *)"hello"
if *1from == *1to goto return_0 ; casting from type to same type
if *1from == TYPE_POINTER goto return_0 ; no need to do anything
; cast float/double to integer
@ -3001,7 +3001,7 @@ function generate_code
; program header 3 (rwdata)
emit_dword(1) ; loadable segment
emit_dword(6) ; read/write
emit_dword(7) ; read/write/execute (this needs to be executable for `syscall` to be implementable)
emit_qword(RWDATA_ADDR) ; offset in file
emit_qword(RWDATA_ADDR) ; virtual address
emit_qword(0) ; physical address