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mescc: Mes C Library: Support make: Support main with envp.

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* lib/linux/x86-mes-gcc/crt1.c (_start): Also push envp.
* lib/linux/x86-mes/crt1.c (_start): Also push envp.
* lib/linux/x86_64-mes-gcc/crt1.c (_start): Also mov environment,%rdx.
This commit is contained in:
Jan Nieuwenhuizen 2018-08-26 23:39:43 +02:00
parent 8b9d51e4a4
commit 2fe2e556e8
No known key found for this signature in database
GPG key ID: F3C1A0D9C1D65273
3 changed files with 5 additions and 2 deletions
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3
lib/linux/x86-mes-gcc/crt1.c
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@ -19,7 +19,7 @@
*/ */
char **environ = 0; char **environ = 0;
int main (int argc, char *argv[]); int main (int argc, char *argv[], char *envp[]);
void void
_start () _start ()
@ -32,6 +32,7 @@ _start ()
"shl $2,%%eax\n\t" "shl $2,%%eax\n\t"
"add %%ebp,%%eax\n\t" "add %%ebp,%%eax\n\t"
"mov %%eax,%0\n\t" "mov %%eax,%0\n\t"
"push %%eax\n\t"
: "=r" (environ) : "=r" (environ)
: //no inputs "" : //no inputs ""
); );

3
lib/linux/x86-mes/crt1.c
View file

@ -19,7 +19,7 @@
*/ */
char **environ = 0; char **environ = 0;
int main (int argc, char *argv[]); int main (int argc, char *argv[], char *envp[]);
int int
_start () _start ()
@ -33,6 +33,7 @@ _start ()
asm ("shl____$i8,%eax !0x02"); asm ("shl____$i8,%eax !0x02");
asm ("add____%ebp,%eax"); asm ("add____%ebp,%eax");
asm ("mov____%eax,0x32 &environ"); asm ("mov____%eax,0x32 &environ");
asm ("push___%eax");
asm ("mov____%ebp,%eax"); asm ("mov____%ebp,%eax");
asm ("add____$i8,%eax !8"); asm ("add____$i8,%eax !8");

1
lib/linux/x86_64-mes-gcc/crt1.c
View file

@ -35,6 +35,7 @@ _start ()
"shl $3,%%rax\n\t" "shl $3,%%rax\n\t"
"add %%rbp,%%rax\n\t" "add %%rbp,%%rax\n\t"
"mov %%rax,%0\n\t" "mov %%rax,%0\n\t"
"mov %%rax,%%rdx\n\t"
: "=r" (environ) : "=r" (environ)
: //no inputs "" : //no inputs ""
); );