v2.56 vs v2.55

[mabdelouahab]

Code Select Expand

printf PROTO pString:PTR, args:VARARG
.data
@String DB "String1\n" ,0
.code
g1 proc
invoke printf ,addr @String
ret
g1 endp
main  PROC  argc:QWORD, argv:QWORD
g1()
printf(addr @String)
xor rax,rax
ret
main  ENDP
end 

uasm -elf64   main.asm

v2.56   (crash) ==========================================================   ;-- frame_dummy: entry.init0 (); 0x00401120      endbr64 0x00401124      jmp     register_tm_clones ; sym.register_tm_clones 0x00401126      nop     word cs:[rax + rax] g1 (); 0x00401130      sub     rsp, 8 0x00401134      lea     rdi, @String ; 0x404030 ; const char *format 0x0040113b      xor     eax, eax 0x0040113d      call    printf     ; sym.imp.printf ; int printf(const char *format) 0x00401142      ret int main (int argc, char **argv, char **envp); 0x00401143      push    rbp 0x00401144      mov     rbp, rsp 0x00401147      call    g1         ; sym.g1 0x0040114c      lea     rdi, @String ; 0x404030 ; const char *format 0x00401153      xor     eax, eax 0x00401155      call    printf     ; sym.imp.printf ; int printf(const char *format) 0x0040115a      xor     rax, rax 0x0040115d      pop     rbp 0x0040115e      ret 0x0040115f      add     bl, dh   ;-- section..fini: _fini ();

v2.55 ==========================================================   ;-- frame_dummy: entry.init0 (); 0x00401120      endbr64 0x00401124      jmp     register_tm_clones ; sym.register_tm_clones 0x00401126      nop     word cs:[rax + rax] g1 (); 0x00401130      sub     rsp, 8 0x00401134      lea     rdi, @String ; 0x404030 ; const char *format 0x0040113b      xor     eax, eax 0x0040113d      call    printf     ; sym.imp.printf ; int printf(const char *format) 0x00401142      add     rsp, 8 0x00401146      ret int main (int argc, char **argv, char **envp); 0x00401147      push    rbp 0x00401148      mov     rbp, rsp 0x0040114b      call    g1         ; sym.g1 0x00401150      lea     rdi, @String ; 0x404030 ; const char *format 0x00401157      xor     eax, eax 0x00401159      call    printf     ; sym.imp.printf ; int printf(const char *format) 0x0040115e      xor     rax, rax 0x00401161      pop     rbp 0x00401162      ret 0x00401163      add     bl, dh   ;-- section..fini: _fini ();

[/b]

[mabdelouahab]

I couldn't compile my big projects with this version
Here's another example:

invoke printf,"string\n", 0,1,2,3,4,5,6,7

v2.56 (also crashed) ---------------------------------------------------------------------------------
0x00402588      lea     rdi, __ls36143 ; 0x40ab3f ; const char *format
0x0040258f      xor     rsi, rsi
0x00402592      mov     rdx, 1
0x00402599      mov     rcx, 2
0x004025a0      mov     r8, 3
0x004025a7      mov     r9, 4
0x004025ae      sub     rsp, 8
0x004025b2      push    7          ; 7
0x004025b4      push    6          ; 6
0x004025b6      push    5          ; 5
0x004025b8      xor     eax, eax
0x004025ba      call    printf     ; sym.imp.printf ; int printf(const char *format)
0x004025bf      add     rsp, 8

v2.55-------------------------------------------------------------
0x004025b0      sub     rsp, 8
0x004025b4      lea     rdi, __ls36143 ; 0x40ab3f ; const char *format
0x004025bb      xor     rsi, rsi
0x004025be      mov     rdx, 1
0x004025c5      mov     rcx, 2
0x004025cc      mov     r8, 3
0x004025d3      mov     r9, 4
0x004025da      push    7          ; 7
0x004025dc      push    6          ; 6
0x004025de      push    5          ; 5
0x004025e0      xor     eax, eax
0x004025e2      call    printf     ; sym.imp.printf ; int printf(const char *format)
0x004025e7      add     rsp, 0x20

[mineiro]

These errors happens because your procedure don't have a local variable and stack get unbalanced.
I reported this to sir johnsa in post below:
https://masm32.com/board/index.php?topic=10449.msg115637#msg115637

In your other post, an way to work with both versions until is solved is to load a variable to a register and use by reference. I spend all this day just checking that.
lea r12,W
mov [r12].struct1.s1,1
...

[mineiro]

Oh, I forgot to say, when assembling to windows using printf you should disable internal macro library, the calling convention used start with systemV.
-nomlib
I faced this problem too.

[mabdelouahab]

think you mineiro

[johnsa]

Please try again in UASM 2.57. I've fixed the unbalanced stack and the release will be available shortly.

[mabdelouahab]