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Kernel: Pass process arguments directly on the stack.

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Get rid of the convoluted get_arguments and get_environment syscalls.
This patch also adds a simple /bin/env that just prints its environment.
This commit is contained in:
Andreas Kling 2019-02-22 01:55:22 +01:00
parent e969419202
commit 6d3e12899b
9 changed files with 59 additions and 66 deletions
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15
LibC/entry.cpp
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@ -13,28 +13,19 @@ char** environ;
void __malloc_init();
void __stdio_init();
int _start()
int _start(int argc, char** argv, char** env)
{
errno = 0;
environ = env;
__stdio_init();
__malloc_init();
int status = 254;
int argc;
char** argv;
int rc = syscall(SC_get_arguments, &argc, &argv);
if (rc < 0)
goto epilogue;
rc = syscall(SC_get_environment, &environ);
if (rc < 0)
goto epilogue;
status = main(argc, argv);
int status = main(argc, argv);
fflush(stdout);
fflush(stderr);
epilogue:
syscall(SC_exit, status);
// Birger's birthday <3