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Updated init

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This commit is contained in:
Alex
2022-12-12 00:45:03 +02:00
parent 123ae92e47
commit f9ae9df392
4 changed files with 18 additions and 1856 deletions
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82
apps/system/init/init.c
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@ -1,76 +1,21 @@
#include "printf.h"
#include <stdlib.h>
#include <init.h>
#include <aux.h>
#define AT_NULL 0
#define AT_IGNORE 1
#define AT_EXECFD 2
#define AT_PHDR 3
#define AT_PHENT 4
#define AT_PHNUM 5
#define AT_PAGESZ 6
#define AT_BASE 7
#define AT_FLAGS 8
#define AT_ENTRY 9
#define AT_NOTELF 10
#define AT_UID 11
#define AT_EUID 12
#define AT_GID 13
#define AT_EGID 14
#define AT_PLATFORM 15
#define AT_HWCAP 16
#define AT_CLKTCK 17
#define AT_SECURE 23
#define AT_BASE_PLATFORM 24
#define AT_RANDOM 25
#define AT_HWCAP2 26
#define AT_EXECFN 31
#define AT_SYSINFO 32
#define AT_SYSINFO_EHDR 33
#define AT_L1I_CACHESHAPE 34
#define AT_L1D_CACHESHAPE 35
#define AT_L2_CACHESHAPE 36
#define AT_L3_CACHESHAPE 37
#define AT_L1I_CACHESIZE 40
#define AT_L1I_CACHEGEOMETRY 41
#define AT_L1D_CACHESIZE 42
#define AT_L1D_CACHEGEOMETRY 43
#define AT_L2_CACHESIZE 44
#define AT_L2_CACHEGEOMETRY 45
#define AT_L3_CACHESIZE 46
#define AT_L3_CACHEGEOMETRY 47
#define AT_MINSIGSTKSZ 51
typedef struct
{
unsigned long a_type;
union
{
unsigned long a_val;
} a_un;
} Elf64_auxv_t;
static inline long syscall2(int sc, long arg1, long arg2)
{
long ret;
__asm__ __volatile__("syscall"
: "=a"(ret)
: "a"(sc), "D"(arg1), "S"(arg2)
: "rcx", "r11", "memory");
return ret;
}
void putchar(char c) { syscall2(1, c, 0); }
#define print(m, ...) init_log(m, ##__VA_ARGS__)
int main(int argc, char *argv[], int envc, char *envp[])
{
printf_("Hello World!\n");
printf_("%p %p %p %p\n", argc, argv, envc, envp);
printf_("I have %d arguments\n", argc);
print("Hello World!\n");
print("%p %p %p %p\n", argc, argv, envc, envp);
print("I have %d arguments\n", argc);
for (int i = 0; i < argc; i++)
printf_("argv[%d] = (%p) %s\n", i, argv[i], argv[i]);
print("argv[%d] = (%p) %s\n", i, argv[i], argv[i]);
printf_("I have %d environment variables\n", envc);
print("I have %d environment variables\n", envc);
for (int i = 0; i < envc; i++)
printf_("envp[%d] = (%p) %s\n", i, envp[i], envp[i]);
print("envp[%d] = (%p) %s\n", i, envp[i], envp[i]);
Elf64_auxv_t *auxv;
while (*envp++ != NULL)
;
@ -78,7 +23,12 @@ int main(int argc, char *argv[], int envc, char *envp[])
int i = 0;
for (auxv = (Elf64_auxv_t *)envp; auxv->a_type != AT_NULL; auxv++)
{
printf_("%lu :%d\n", (auxv->a_type), i++);
print("%lu :%d\n", (auxv->a_type), i++);
}
// This code somehow breaks the process. How? I can't figure it out if it's a bug in the kernel or in the libc.
void *yes = malloc(0x100);
print("malloc(0x100) = %p\n", yes);
free(yes);
return 0;
}