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loader: In macOS preloader, set NXArgc, NXArgv, and environ on i386 and x86_64.

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Brendan Shanks 2022-12-06 11:58:12 -08:00 • committed by Alexandre Julliard
parent 1a7efafbab
commit f99eef6847
1 changed files with 35 additions and 14 deletions
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49
loader/preloader_mac.c
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@ -640,6 +640,34 @@ static void fixup_stack( void *stack )
memmove(&argv[0], &argv[1], (char *)apple_end - (char *)&argv[1]);
}
static void set_program_vars( void *stack, void *mod )
{
int *pargc;
char **argv, **env;
int *wine_NXArgc = pdlsym( mod, "NXArgc" );
char ***wine_NXArgv = pdlsym( mod, "NXArgv" );
char ***wine_environ = pdlsym( mod, "environ" );
pargc = stack;
argv = (char **)pargc + 1;
env = &argv[*pargc-1] + 2;
if (wine_NXArgc)
*wine_NXArgc = *pargc;
else
wld_printf( "preloader: Warning: failed to set NXArgc\n" );
if (wine_NXArgv)
*wine_NXArgv = argv;
else
wld_printf( "preloader: Warning: failed to set NXArgv\n" );
if (wine_environ)
*wine_environ = env;
else
wld_printf( "preloader: Warning: failed to set environ\n" );
}
void *wld_start( void *stack, int *is_unix_thread )
{
struct wine_preload_info builtin_dlls = { (void *)0x7a000000, 0x02000000 };
@ -704,21 +732,14 @@ void *wld_start( void *stack, int *is_unix_thread )
/* decrement argc and "remove" argv[0] */
fixup_stack(stack);
#if defined(__x86_64__)
/* For LC_UNIXTHREAD binaries on Monterey and later, 'environ' is not set and is NULL.
* Set the correct value here.
/* Set NXArgc, NXArgv, and environ in the new binary.
* On different configurations these were either NULL/0 or still had their
* values from this preloader's launch.
*
* In particular, environ was not being updated, resulting in environ[0] being lost.
* And for LC_UNIXTHREAD binaries on Monterey and later, environ was just NULL.
*/
if (*is_unix_thread)
{
char **env, ***wine_environ = pdlsym( mod, "environ" );
pargc = stack;
argv = (char **)pargc + 1;
env = &argv[*pargc-1] + 2;
*wine_environ = env;
}
#endif
set_program_vars( stack, mod );
return entry;
}