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-rw-r--r--tools/include/nolibc/Makefile1
-rw-r--r--tools/include/nolibc/arch-aarch64.h4
-rw-r--r--tools/include/nolibc/arch-arm.h8
-rw-r--r--tools/include/nolibc/arch-i386.h4
-rw-r--r--tools/include/nolibc/arch-loongarch.h4
-rw-r--r--tools/include/nolibc/arch-mips.h8
-rw-r--r--tools/include/nolibc/arch-powerpc.h6
-rw-r--r--tools/include/nolibc/arch-riscv.h4
-rw-r--r--tools/include/nolibc/arch-s390.h5
-rw-r--r--tools/include/nolibc/arch-x86_64.h8
-rw-r--r--tools/include/nolibc/compiler.h30
-rw-r--r--tools/include/nolibc/crt.h25
-rw-r--r--tools/include/nolibc/nolibc.h3
-rw-r--r--tools/include/nolibc/stackprotector.h4
-rw-r--r--tools/include/nolibc/stdbool.h16
-rw-r--r--tools/include/nolibc/stdint.h19
-rw-r--r--tools/include/nolibc/stdio.h13
-rw-r--r--tools/include/nolibc/stdlib.h111
-rw-r--r--tools/include/nolibc/string.h47
-rw-r--r--tools/include/nolibc/sys.h45
20 files changed, 297 insertions, 68 deletions
diff --git a/tools/include/nolibc/Makefile b/tools/include/nolibc/Makefile
index e69c26abe1ea..a1f55fb24bb3 100644
--- a/tools/include/nolibc/Makefile
+++ b/tools/include/nolibc/Makefile
@@ -35,6 +35,7 @@ all_files := \
stackprotector.h \
std.h \
stdarg.h \
+ stdbool.h \
stdint.h \
stdlib.h \
string.h \
diff --git a/tools/include/nolibc/arch-aarch64.h b/tools/include/nolibc/arch-aarch64.h
index b23ac1f04035..06fdef7b291a 100644
--- a/tools/include/nolibc/arch-aarch64.h
+++ b/tools/include/nolibc/arch-aarch64.h
@@ -142,13 +142,13 @@
})
/* startup code */
-void __attribute__((weak, noreturn, optimize("Os", "omit-frame-pointer"))) __no_stack_protector _start(void)
+void __attribute__((weak, noreturn)) __nolibc_entrypoint __no_stack_protector _start(void)
{
__asm__ volatile (
"mov x0, sp\n" /* save stack pointer to x0, as arg1 of _start_c */
"and sp, x0, -16\n" /* sp must be 16-byte aligned in the callee */
"bl _start_c\n" /* transfer to c runtime */
);
- __builtin_unreachable();
+ __nolibc_entrypoint_epilogue();
}
#endif /* _NOLIBC_ARCH_AARCH64_H */
diff --git a/tools/include/nolibc/arch-arm.h b/tools/include/nolibc/arch-arm.h
index cae4afa7c1c7..6180ff99ab43 100644
--- a/tools/include/nolibc/arch-arm.h
+++ b/tools/include/nolibc/arch-arm.h
@@ -185,15 +185,15 @@
})
/* startup code */
-void __attribute__((weak, noreturn, optimize("Os", "omit-frame-pointer"))) __no_stack_protector _start(void)
+void __attribute__((weak, noreturn)) __nolibc_entrypoint __no_stack_protector _start(void)
{
__asm__ volatile (
- "mov %r0, sp\n" /* save stack pointer to %r0, as arg1 of _start_c */
- "and ip, %r0, #-8\n" /* sp must be 8-byte aligned in the callee */
+ "mov r0, sp\n" /* save stack pointer to %r0, as arg1 of _start_c */
+ "and ip, r0, #-8\n" /* sp must be 8-byte aligned in the callee */
"mov sp, ip\n"
"bl _start_c\n" /* transfer to c runtime */
);
- __builtin_unreachable();
+ __nolibc_entrypoint_epilogue();
}
#endif /* _NOLIBC_ARCH_ARM_H */
diff --git a/tools/include/nolibc/arch-i386.h b/tools/include/nolibc/arch-i386.h
index 28c26a00a762..ff5afc35bbd8 100644
--- a/tools/include/nolibc/arch-i386.h
+++ b/tools/include/nolibc/arch-i386.h
@@ -162,7 +162,7 @@
* 2) The deepest stack frame should be set to zero
*
*/
-void __attribute__((weak, noreturn, optimize("Os", "omit-frame-pointer"))) __no_stack_protector _start(void)
+void __attribute__((weak, noreturn)) __nolibc_entrypoint __no_stack_protector _start(void)
{
__asm__ volatile (
"xor %ebp, %ebp\n" /* zero the stack frame */
@@ -174,7 +174,7 @@ void __attribute__((weak, noreturn, optimize("Os", "omit-frame-pointer"))) __no_
"call _start_c\n" /* transfer to c runtime */
"hlt\n" /* ensure it does not return */
);
- __builtin_unreachable();
+ __nolibc_entrypoint_epilogue();
}
#endif /* _NOLIBC_ARCH_I386_H */
diff --git a/tools/include/nolibc/arch-loongarch.h b/tools/include/nolibc/arch-loongarch.h
index 3f8ef8f86c0f..fb519545959e 100644
--- a/tools/include/nolibc/arch-loongarch.h
+++ b/tools/include/nolibc/arch-loongarch.h
@@ -149,14 +149,14 @@
#endif
/* startup code */
-void __attribute__((weak, noreturn, optimize("Os", "omit-frame-pointer"))) __no_stack_protector _start(void)
+void __attribute__((weak, noreturn)) __nolibc_entrypoint __no_stack_protector _start(void)
{
__asm__ volatile (
"move $a0, $sp\n" /* save stack pointer to $a0, as arg1 of _start_c */
LONG_BSTRINS " $sp, $zero, 3, 0\n" /* $sp must be 16-byte aligned */
"bl _start_c\n" /* transfer to c runtime */
);
- __builtin_unreachable();
+ __nolibc_entrypoint_epilogue();
}
#endif /* _NOLIBC_ARCH_LOONGARCH_H */
diff --git a/tools/include/nolibc/arch-mips.h b/tools/include/nolibc/arch-mips.h
index 62cc50ef3288..1791a8ce58da 100644
--- a/tools/include/nolibc/arch-mips.h
+++ b/tools/include/nolibc/arch-mips.h
@@ -179,7 +179,7 @@
})
/* startup code, note that it's called __start on MIPS */
-void __attribute__((weak, noreturn, optimize("Os", "omit-frame-pointer"))) __no_stack_protector __start(void)
+void __attribute__((weak, noreturn)) __nolibc_entrypoint __no_stack_protector __start(void)
{
__asm__ volatile (
".set push\n"
@@ -194,11 +194,13 @@ void __attribute__((weak, noreturn, optimize("Os", "omit-frame-pointer"))) __no_
"li $t0, -8\n"
"and $sp, $sp, $t0\n" /* $sp must be 8-byte aligned */
"addiu $sp, $sp, -16\n" /* the callee expects to save a0..a3 there */
- "jal _start_c\n" /* transfer to c runtime */
+ "lui $t9, %hi(_start_c)\n" /* ABI requires current function address in $t9 */
+ "ori $t9, %lo(_start_c)\n"
+ "jalr $t9\n" /* transfer to c runtime */
" nop\n" /* delayed slot */
".set pop\n"
);
- __builtin_unreachable();
+ __nolibc_entrypoint_epilogue();
}
#endif /* _NOLIBC_ARCH_MIPS_H */
diff --git a/tools/include/nolibc/arch-powerpc.h b/tools/include/nolibc/arch-powerpc.h
index ac212e6185b2..ee2fdb8d601d 100644
--- a/tools/include/nolibc/arch-powerpc.h
+++ b/tools/include/nolibc/arch-powerpc.h
@@ -172,7 +172,7 @@
_ret; \
})
-#ifndef __powerpc64__
+#if !defined(__powerpc64__) && !defined(__clang__)
/* FIXME: For 32-bit PowerPC, with newer gcc compilers (e.g. gcc 13.1.0),
* "omit-frame-pointer" fails with __attribute__((no_stack_protector)) but
* works with __attribute__((__optimize__("-fno-stack-protector")))
@@ -184,7 +184,7 @@
#endif /* !__powerpc64__ */
/* startup code */
-void __attribute__((weak, noreturn, optimize("Os", "omit-frame-pointer"))) __no_stack_protector _start(void)
+void __attribute__((weak, noreturn)) __nolibc_entrypoint __no_stack_protector _start(void)
{
#ifdef __powerpc64__
#if _CALL_ELF == 2
@@ -215,7 +215,7 @@ void __attribute__((weak, noreturn, optimize("Os", "omit-frame-pointer"))) __no_
"bl _start_c\n" /* transfer to c runtime */
);
#endif
- __builtin_unreachable();
+ __nolibc_entrypoint_epilogue();
}
#endif /* _NOLIBC_ARCH_POWERPC_H */
diff --git a/tools/include/nolibc/arch-riscv.h b/tools/include/nolibc/arch-riscv.h
index 1927c643c739..8827bf936212 100644
--- a/tools/include/nolibc/arch-riscv.h
+++ b/tools/include/nolibc/arch-riscv.h
@@ -140,7 +140,7 @@
})
/* startup code */
-void __attribute__((weak, noreturn, optimize("Os", "omit-frame-pointer"))) __no_stack_protector _start(void)
+void __attribute__((weak, noreturn)) __nolibc_entrypoint __no_stack_protector _start(void)
{
__asm__ volatile (
".option push\n"
@@ -151,7 +151,7 @@ void __attribute__((weak, noreturn, optimize("Os", "omit-frame-pointer"))) __no_
"andi sp, a0, -16\n" /* sp must be 16-byte aligned */
"call _start_c\n" /* transfer to c runtime */
);
- __builtin_unreachable();
+ __nolibc_entrypoint_epilogue();
}
#endif /* _NOLIBC_ARCH_RISCV_H */
diff --git a/tools/include/nolibc/arch-s390.h b/tools/include/nolibc/arch-s390.h
index 5d60fd43f883..f9ab83a219b8 100644
--- a/tools/include/nolibc/arch-s390.h
+++ b/tools/include/nolibc/arch-s390.h
@@ -10,6 +10,7 @@
#include "compiler.h"
#include "crt.h"
+#include "std.h"
/* Syscalls for s390:
* - registers are 64-bit
@@ -139,7 +140,7 @@
})
/* startup code */
-void __attribute__((weak, noreturn, optimize("Os", "omit-frame-pointer"))) __no_stack_protector _start(void)
+void __attribute__((weak, noreturn)) __nolibc_entrypoint __no_stack_protector _start(void)
{
__asm__ volatile (
"lgr %r2, %r15\n" /* save stack pointer to %r2, as arg1 of _start_c */
@@ -147,7 +148,7 @@ void __attribute__((weak, noreturn, optimize("Os", "omit-frame-pointer"))) __no_
"xc 0(8,%r15), 0(%r15)\n" /* clear backchain */
"brasl %r14, _start_c\n" /* transfer to c runtime */
);
- __builtin_unreachable();
+ __nolibc_entrypoint_epilogue();
}
struct s390_mmap_arg_struct {
diff --git a/tools/include/nolibc/arch-x86_64.h b/tools/include/nolibc/arch-x86_64.h
index 68609f421934..1e40620a2b33 100644
--- a/tools/include/nolibc/arch-x86_64.h
+++ b/tools/include/nolibc/arch-x86_64.h
@@ -161,7 +161,7 @@
* 2) The deepest stack frame should be zero (the %rbp).
*
*/
-void __attribute__((weak, noreturn, optimize("Os", "omit-frame-pointer"))) __no_stack_protector _start(void)
+void __attribute__((weak, noreturn)) __nolibc_entrypoint __no_stack_protector _start(void)
{
__asm__ volatile (
"xor %ebp, %ebp\n" /* zero the stack frame */
@@ -170,7 +170,7 @@ void __attribute__((weak, noreturn, optimize("Os", "omit-frame-pointer"))) __no_
"call _start_c\n" /* transfer to c runtime */
"hlt\n" /* ensure it does not return */
);
- __builtin_unreachable();
+ __nolibc_entrypoint_epilogue();
}
#define NOLIBC_ARCH_HAS_MEMMOVE
@@ -193,10 +193,10 @@ __asm__ (
"movq %rdi, %rdx\n\t"
"subq %rsi, %rdx\n\t"
"cmpq %rcx, %rdx\n\t"
- "jb .Lbackward_copy\n\t"
+ "jb 1f\n\t"
"rep movsb\n\t"
"retq\n"
-".Lbackward_copy:"
+"1:" /* backward copy */
"leaq -1(%rdi, %rcx, 1), %rdi\n\t"
"leaq -1(%rsi, %rcx, 1), %rsi\n\t"
"std\n\t"
diff --git a/tools/include/nolibc/compiler.h b/tools/include/nolibc/compiler.h
index beddc3665d69..fa1f547e7f13 100644
--- a/tools/include/nolibc/compiler.h
+++ b/tools/include/nolibc/compiler.h
@@ -6,20 +6,36 @@
#ifndef _NOLIBC_COMPILER_H
#define _NOLIBC_COMPILER_H
+#if defined(__has_attribute)
+# define __nolibc_has_attribute(attr) __has_attribute(attr)
+#else
+# define __nolibc_has_attribute(attr) 0
+#endif
+
+#if __nolibc_has_attribute(naked)
+# define __nolibc_entrypoint __attribute__((naked))
+# define __nolibc_entrypoint_epilogue()
+#else
+# define __nolibc_entrypoint __attribute__((optimize("Os", "omit-frame-pointer")))
+# define __nolibc_entrypoint_epilogue() __builtin_unreachable()
+#endif /* __nolibc_has_attribute(naked) */
+
#if defined(__SSP__) || defined(__SSP_STRONG__) || defined(__SSP_ALL__) || defined(__SSP_EXPLICIT__)
#define _NOLIBC_STACKPROTECTOR
#endif /* defined(__SSP__) ... */
-#if defined(__has_attribute)
-# if __has_attribute(no_stack_protector)
-# define __no_stack_protector __attribute__((no_stack_protector))
-# else
-# define __no_stack_protector __attribute__((__optimize__("-fno-stack-protector")))
-# endif
+#if __nolibc_has_attribute(no_stack_protector)
+# define __no_stack_protector __attribute__((no_stack_protector))
#else
# define __no_stack_protector __attribute__((__optimize__("-fno-stack-protector")))
-#endif /* defined(__has_attribute) */
+#endif /* __nolibc_has_attribute(no_stack_protector) */
+
+#if __nolibc_has_attribute(fallthrough)
+# define __nolibc_fallthrough do { } while (0); __attribute__((fallthrough))
+#else
+# define __nolibc_fallthrough do { } while (0)
+#endif /* __nolibc_has_attribute(fallthrough) */
#endif /* _NOLIBC_COMPILER_H */
diff --git a/tools/include/nolibc/crt.h b/tools/include/nolibc/crt.h
index 43b551468c2a..bbcd5fd09806 100644
--- a/tools/include/nolibc/crt.h
+++ b/tools/include/nolibc/crt.h
@@ -13,23 +13,24 @@ const unsigned long *_auxv __attribute__((weak));
static void __stack_chk_init(void);
static void exit(int);
-extern void (*const __preinit_array_start[])(void) __attribute__((weak));
-extern void (*const __preinit_array_end[])(void) __attribute__((weak));
+extern void (*const __preinit_array_start[])(int, char **, char**) __attribute__((weak));
+extern void (*const __preinit_array_end[])(int, char **, char**) __attribute__((weak));
-extern void (*const __init_array_start[])(void) __attribute__((weak));
-extern void (*const __init_array_end[])(void) __attribute__((weak));
+extern void (*const __init_array_start[])(int, char **, char**) __attribute__((weak));
+extern void (*const __init_array_end[])(int, char **, char**) __attribute__((weak));
extern void (*const __fini_array_start[])(void) __attribute__((weak));
extern void (*const __fini_array_end[])(void) __attribute__((weak));
-__attribute__((weak))
+__attribute__((weak,used))
void _start_c(long *sp)
{
long argc;
char **argv;
char **envp;
int exitcode;
- void (* const *func)(void);
+ void (* const *ctor_func)(int, char **, char **);
+ void (* const *dtor_func)(void);
const unsigned long *auxv;
/* silence potential warning: conflicting types for 'main' */
int _nolibc_main(int, char **, char **) __asm__ ("main");
@@ -66,16 +67,16 @@ void _start_c(long *sp)
;
_auxv = auxv;
- for (func = __preinit_array_start; func < __preinit_array_end; func++)
- (*func)();
- for (func = __init_array_start; func < __init_array_end; func++)
- (*func)();
+ for (ctor_func = __preinit_array_start; ctor_func < __preinit_array_end; ctor_func++)
+ (*ctor_func)(argc, argv, envp);
+ for (ctor_func = __init_array_start; ctor_func < __init_array_end; ctor_func++)
+ (*ctor_func)(argc, argv, envp);
/* go to application */
exitcode = _nolibc_main(argc, argv, envp);
- for (func = __fini_array_end; func > __fini_array_start;)
- (*--func)();
+ for (dtor_func = __fini_array_end; dtor_func > __fini_array_start;)
+ (*--dtor_func)();
exit(exitcode);
}
diff --git a/tools/include/nolibc/nolibc.h b/tools/include/nolibc/nolibc.h
index 989e707263a4..92436b1e4441 100644
--- a/tools/include/nolibc/nolibc.h
+++ b/tools/include/nolibc/nolibc.h
@@ -74,7 +74,8 @@
* -I../nolibc -o hello hello.c -lgcc
*
* The available standard (but limited) include files are:
- * ctype.h, errno.h, signal.h, stdarg.h, stdio.h, stdlib.h, string.h, time.h
+ * ctype.h, errno.h, signal.h, stdarg.h, stdbool.h stdio.h, stdlib.h,
+ * string.h, time.h
*
* In addition, the following ones are expected to be provided by the compiler:
* float.h, stddef.h
diff --git a/tools/include/nolibc/stackprotector.h b/tools/include/nolibc/stackprotector.h
index 13f1d0e60387..1d0d5259ec41 100644
--- a/tools/include/nolibc/stackprotector.h
+++ b/tools/include/nolibc/stackprotector.h
@@ -18,7 +18,7 @@
* triggering stack protector errors themselves
*/
-__attribute__((weak,noreturn,section(".text.nolibc_stack_chk")))
+__attribute__((weak,used,noreturn,section(".text.nolibc_stack_chk")))
void __stack_chk_fail(void)
{
pid_t pid;
@@ -34,7 +34,7 @@ void __stack_chk_fail_local(void)
__stack_chk_fail();
}
-__attribute__((weak,section(".data.nolibc_stack_chk")))
+__attribute__((weak,used,section(".data.nolibc_stack_chk")))
uintptr_t __stack_chk_guard;
static __no_stack_protector void __stack_chk_init(void)
diff --git a/tools/include/nolibc/stdbool.h b/tools/include/nolibc/stdbool.h
new file mode 100644
index 000000000000..60feece22f17
--- /dev/null
+++ b/tools/include/nolibc/stdbool.h
@@ -0,0 +1,16 @@
+/* SPDX-License-Identifier: LGPL-2.1 OR MIT */
+/*
+ * Boolean types support for NOLIBC
+ * Copyright (C) 2024 Thomas Weißschuh <linux@weissschuh.net>
+ */
+
+#ifndef _NOLIBC_STDBOOL_H
+#define _NOLIBC_STDBOOL_H
+
+#define bool _Bool
+#define true 1
+#define false 0
+
+#define __bool_true_false_are_defined 1
+
+#endif /* _NOLIBC_STDBOOL_H */
diff --git a/tools/include/nolibc/stdint.h b/tools/include/nolibc/stdint.h
index 6665e272e213..cd79ddd6170e 100644
--- a/tools/include/nolibc/stdint.h
+++ b/tools/include/nolibc/stdint.h
@@ -96,6 +96,10 @@ typedef uint64_t uintmax_t;
#define UINT_FAST32_MAX SIZE_MAX
#define UINT_FAST64_MAX UINT64_MAX
+#define INTMAX_MIN INT64_MIN
+#define INTMAX_MAX INT64_MAX
+#define UINTMAX_MAX UINT64_MAX
+
#ifndef INT_MIN
#define INT_MIN (-__INT_MAX__ - 1)
#endif
@@ -110,4 +114,19 @@ typedef uint64_t uintmax_t;
#define LONG_MAX __LONG_MAX__
#endif
+#ifndef ULONG_MAX
+#define ULONG_MAX ((unsigned long)(__LONG_MAX__) * 2 + 1)
+#endif
+
+#ifndef LLONG_MIN
+#define LLONG_MIN (-__LONG_LONG_MAX__ - 1)
+#endif
+#ifndef LLONG_MAX
+#define LLONG_MAX __LONG_LONG_MAX__
+#endif
+
+#ifndef ULLONG_MAX
+#define ULLONG_MAX ((unsigned long long)(__LONG_LONG_MAX__) * 2 + 1)
+#endif
+
#endif /* _NOLIBC_STDINT_H */
diff --git a/tools/include/nolibc/stdio.h b/tools/include/nolibc/stdio.h
index 16cd4d807251..3892034198dd 100644
--- a/tools/include/nolibc/stdio.h
+++ b/tools/include/nolibc/stdio.h
@@ -15,6 +15,7 @@
#include "stdarg.h"
#include "stdlib.h"
#include "string.h"
+#include "compiler.h"
#ifndef EOF
#define EOF (-1)
@@ -264,7 +265,7 @@ int vfprintf(FILE *stream, const char *fmt, va_list args)
case 'p':
*(out++) = '0';
*(out++) = 'x';
- /* fall through */
+ __nolibc_fallthrough;
default: /* 'x' and 'p' above */
u64toh_r(v, out);
break;
@@ -376,6 +377,16 @@ int setvbuf(FILE *stream __attribute__((unused)),
return 0;
}
+static __attribute__((unused))
+const char *strerror(int errno)
+{
+ static char buf[18] = "errno=";
+
+ i64toa_r(errno, &buf[6]);
+
+ return buf;
+}
+
/* make sure to include all global symbols */
#include "nolibc.h"
diff --git a/tools/include/nolibc/stdlib.h b/tools/include/nolibc/stdlib.h
index bacfd35c5156..75aa273c23a6 100644
--- a/tools/include/nolibc/stdlib.h
+++ b/tools/include/nolibc/stdlib.h
@@ -185,7 +185,7 @@ void *realloc(void *old_ptr, size_t new_size)
if (__builtin_expect(!ret, 0))
return NULL;
- memcpy(ret, heap->user_p, heap->len);
+ memcpy(ret, heap->user_p, user_p_len);
munmap(heap, heap->len);
return ret;
}
@@ -438,6 +438,115 @@ char *u64toa(uint64_t in)
return itoa_buffer;
}
+static __attribute__((unused))
+uintmax_t __strtox(const char *nptr, char **endptr, int base, intmax_t lower_limit, uintmax_t upper_limit)
+{
+ const char signed_ = lower_limit != 0;
+ unsigned char neg = 0, overflow = 0;
+ uintmax_t val = 0, limit, old_val;
+ char c;
+
+ if (base < 0 || base > 36) {
+ SET_ERRNO(EINVAL);
+ goto out;
+ }
+
+ while (isspace(*nptr))
+ nptr++;
+
+ if (*nptr == '+') {
+ nptr++;
+ } else if (*nptr == '-') {
+ neg = 1;
+ nptr++;
+ }
+
+ if (signed_ && neg)
+ limit = -(uintmax_t)lower_limit;
+ else
+ limit = upper_limit;
+
+ if ((base == 0 || base == 16) &&
+ (strncmp(nptr, "0x", 2) == 0 || strncmp(nptr, "0X", 2) == 0)) {
+ base = 16;
+ nptr += 2;
+ } else if (base == 0 && strncmp(nptr, "0", 1) == 0) {
+ base = 8;
+ nptr += 1;
+ } else if (base == 0) {
+ base = 10;
+ }
+
+ while (*nptr) {
+ c = *nptr;
+
+ if (c >= '0' && c <= '9')
+ c -= '0';
+ else if (c >= 'a' && c <= 'z')
+ c = c - 'a' + 10;
+ else if (c >= 'A' && c <= 'Z')
+ c = c - 'A' + 10;
+ else
+ goto out;
+
+ if (c >= base)
+ goto out;
+
+ nptr++;
+ old_val = val;
+ val *= base;
+ val += c;
+
+ if (val > limit || val < old_val)
+ overflow = 1;
+ }
+
+out:
+ if (overflow) {
+ SET_ERRNO(ERANGE);
+ val = limit;
+ }
+ if (endptr)
+ *endptr = (char *)nptr;
+ return neg ? -val : val;
+}
+
+static __attribute__((unused))
+long strtol(const char *nptr, char **endptr, int base)
+{
+ return __strtox(nptr, endptr, base, LONG_MIN, LONG_MAX);
+}
+
+static __attribute__((unused))
+unsigned long strtoul(const char *nptr, char **endptr, int base)
+{
+ return __strtox(nptr, endptr, base, 0, ULONG_MAX);
+}
+
+static __attribute__((unused))
+long long strtoll(const char *nptr, char **endptr, int base)
+{
+ return __strtox(nptr, endptr, base, LLONG_MIN, LLONG_MAX);
+}
+
+static __attribute__((unused))
+unsigned long long strtoull(const char *nptr, char **endptr, int base)
+{
+ return __strtox(nptr, endptr, base, 0, ULLONG_MAX);
+}
+
+static __attribute__((unused))
+intmax_t strtoimax(const char *nptr, char **endptr, int base)
+{
+ return __strtox(nptr, endptr, base, INTMAX_MIN, INTMAX_MAX);
+}
+
+static __attribute__((unused))
+uintmax_t strtoumax(const char *nptr, char **endptr, int base)
+{
+ return __strtox(nptr, endptr, base, 0, UINTMAX_MAX);
+}
+
/* make sure to include all global symbols */
#include "nolibc.h"
diff --git a/tools/include/nolibc/string.h b/tools/include/nolibc/string.h
index a01c69dd495f..9ec9c24f38c0 100644
--- a/tools/include/nolibc/string.h
+++ b/tools/include/nolibc/string.h
@@ -7,6 +7,7 @@
#ifndef _NOLIBC_STRING_H
#define _NOLIBC_STRING_H
+#include "arch.h"
#include "std.h"
static void *malloc(size_t len);
@@ -123,7 +124,7 @@ char *strcpy(char *dst, const char *src)
* thus itself, hence the asm() statement below that's meant to disable this
* confusing practice.
*/
-static __attribute__((unused))
+__attribute__((weak,unused,section(".text.nolibc_strlen")))
size_t strlen(const char *str)
{
size_t len;
@@ -187,22 +188,26 @@ char *strndup(const char *str, size_t maxlen)
static __attribute__((unused))
size_t strlcat(char *dst, const char *src, size_t size)
{
- size_t len;
- char c;
-
- for (len = 0; dst[len]; len++)
- ;
-
- for (;;) {
- c = *src;
- if (len < size)
- dst[len] = c;
- if (!c)
+ size_t len = strnlen(dst, size);
+
+ /*
+ * We want len < size-1. But as size is unsigned and can wrap
+ * around, we use len + 1 instead.
+ */
+ while (len + 1 < size) {
+ dst[len] = *src;
+ if (*src == '\0')
break;
len++;
src++;
}
+ if (len < size)
+ dst[len] = '\0';
+
+ while (*src++)
+ len++;
+
return len;
}
@@ -210,16 +215,18 @@ static __attribute__((unused))
size_t strlcpy(char *dst, const char *src, size_t size)
{
size_t len;
- char c;
- for (len = 0;;) {
- c = src[len];
- if (len < size)
- dst[len] = c;
- if (!c)
- break;
- len++;
+ for (len = 0; len < size; len++) {
+ dst[len] = src[len];
+ if (!dst[len])
+ return len;
}
+ if (size)
+ dst[size-1] = '\0';
+
+ while (src[len])
+ len++;
+
return len;
}
diff --git a/tools/include/nolibc/sys.h b/tools/include/nolibc/sys.h
index dda9dffd1d74..d4a5c2399a66 100644
--- a/tools/include/nolibc/sys.h
+++ b/tools/include/nolibc/sys.h
@@ -22,6 +22,8 @@
#include <linux/stat.h> /* for statx() */
#include <linux/prctl.h>
#include <linux/resource.h>
+#include <linux/utsname.h>
+#include <linux/signal.h>
#include "arch.h"
#include "errno.h"
@@ -1140,6 +1142,32 @@ int umount2(const char *path, int flags)
/*
+ * int uname(struct utsname *buf);
+ */
+
+struct utsname {
+ char sysname[65];
+ char nodename[65];
+ char release[65];
+ char version[65];
+ char machine[65];
+ char domainname[65];
+};
+
+static __attribute__((unused))
+int sys_uname(struct utsname *buf)
+{
+ return my_syscall1(__NR_uname, buf);
+}
+
+static __attribute__((unused))
+int uname(struct utsname *buf)
+{
+ return __sysret(sys_uname(buf));
+}
+
+
+/*
* int unlink(const char *path);
*/
@@ -1199,6 +1227,23 @@ pid_t waitpid(pid_t pid, int *status, int options)
/*
+ * int waitid(idtype_t idtype, id_t id, siginfo_t *infop, int options);
+ */
+
+static __attribute__((unused))
+int sys_waitid(int which, pid_t pid, siginfo_t *infop, int options, struct rusage *rusage)
+{
+ return my_syscall5(__NR_waitid, which, pid, infop, options, rusage);
+}
+
+static __attribute__((unused))
+int waitid(int which, pid_t pid, siginfo_t *infop, int options)
+{
+ return __sysret(sys_waitid(which, pid, infop, options, NULL));
+}
+
+
+/*
* ssize_t write(int fd, const void *buf, size_t count);
*/
generated by cgit (git 2.34.1) at 2025-07-26 17:52:28 +0000