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freebsd: lib: Use __init_io.

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* * lib/freebsd/x86-mes-gcc/crt1.c (_start): Replace manual initialization
of __stdin, __stdout, __stderr, and environ with __init_io ().
* lib/freebsd/x86-mes-mescc/crt1.c (_start): Likewise.
* lib/freebsd/x86-mes-gcc/_write.c (SYS_exit): Remove.
(SYS_write): New define.
This commit is contained in:
Janneke Nieuwenhuizen 2023-05-03 22:15:38 +02:00
parent 88eb90dd38
commit 3502ad4f73
3 changed files with 14 additions and 48 deletions
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4
lib/freebsd/x86-mes-gcc/_write.c
View file

@ -1,6 +1,6 @@
/* -*-comment-start: "//";comment-end:""-*-
* GNU Mes --- Maxwell Equations of Software
* Copyright © 2016,2017,2019,2020 Jan (janneke) Nieuwenhuizen <janneke@gnu.org>
* Copyright © 2016,2017,2019,2020,2023 Jan (janneke) Nieuwenhuizen <janneke@gnu.org>
*
* This file is part of GNU Mes.
*
@ -20,7 +20,7 @@
#include "mes/lib-mini.h"
#define SYS_exit "0x01"
#define SYS_write "0x04"
// *INDENT-OFF*
ssize_t

44
lib/freebsd/x86-mes-gcc/crt1.c
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@ -1,6 +1,6 @@
/* -*-comment-start: "//";comment-end:""-*-
* GNU Mes --- Maxwell Equations of Software
* Copyright © 2017,2018,2019 Jan (janneke) Nieuwenhuizen <janneke@gnu.org>
* Copyright © 2017,2018,2019,2023 Jan (janneke) Nieuwenhuizen <janneke@gnu.org>
*
* This file is part of GNU Mes.
*
@ -19,45 +19,20 @@
*/
#include <mes/lib-mini.h>
//int main (int argc, char *argv[], char *envp[]);
int main (int argc, char *argv[], char *envp[]);
// *INDENT-OFF*
void
_start ()
{
asm (
"mov $0,%%eax\n\t"
"mov %%eax,%0\n"
: "=r" (__stdin)
: //no inputs ""
);
asm (
"mov $1,%%eax\n\t"
"mov %%eax,%0\n"
: "=r" (__stdout)
: //no inputs ""
);
asm (
"mov $2,%%eax\n\t"
"mov %%eax,%0\n"
: "=r" (__stderr)
: //no inputs ""
);
asm (
"mov %%ebp,%%eax\n\t"
"add $4,%%eax\n\t"
"mov (%%eax),%%eax\n\t"
"add $3,%%eax\n\t"
"shl $2,%%eax\n\t"
"add %%ebp,%%eax\n\t"
"mov %%eax,%0\n\t"
"push %%eax\n\t"
: "=r" (environ)
: //no inputs ""
);
asm (
"mov %ebp,%eax\n\t"
"add $4,%eax\n\t"
"mov (%eax),%eax\n\t"
"add $3,%eax\n\t"
"shl $2,%eax\n\t"
"add %ebp,%eax\n\t"
"push %eax\n\t"
"mov %ebp,%eax\n\t"
"add $8,%eax\n\t"
"push %eax\n\t"
@ -67,6 +42,7 @@ _start ()
"mov (%eax),%eax\n\t"
"push %eax\n\t"
"call __init_io\n\t"
"call main\n\t"
"push %eax\n\t"

14
lib/freebsd/x86-mes-mescc/crt1.c
View file

@ -1,6 +1,6 @@
/* -*-comment-start: "//";comment-end:""-*-
* GNU Mes --- Maxwell Equations of Software
* Copyright © 2017,2018,2019,2021 Jan (janneke) Nieuwenhuizen <janneke@gnu.org>
* Copyright © 2017,2018,2019,2021,2023 Jan (janneke) Nieuwenhuizen <janneke@gnu.org>
*
* This file is part of GNU Mes.
*
@ -19,21 +19,11 @@
*/
#include "mes/lib-mini.h"
int main (int argc, char *argv[], char *envp[]);
int
_start ()
{
asm ("mov____$i8,%eax !0");
asm ("mov____%eax,0x32 &__stdin");
asm ("mov____$i8,%eax !1");
asm ("mov____%eax,0x32 &__stdout");
asm ("mov____$i8,%eax !2");
asm ("mov____%eax,0x32 &__stderr");
asm ("mov____%ebp,%eax");
asm ("add____$i8,%eax !4");
@ -42,7 +32,6 @@ _start ()
asm ("shl____$i8,%eax !0x02");
asm ("add____%ebp,%eax");
asm ("mov____%eax,0x32 &environ");
asm ("push___%eax");
asm ("mov____%ebp,%eax");
@ -54,6 +43,7 @@ _start ()
asm ("mov____(%eax),%eax");
asm ("push___%eax");
__init_io ();
main ();
asm ("mov____%eax,%ebx");