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Added libssp

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This commit is contained in:
Alex 2022-11-28 08:21:05 +02:00
parent 21c80060a8
commit 414662b24a
Signed by untrusted user who does not match committer: enderice2
GPG Key ID: EACC3AD603BAB4DD
3 changed files with 79 additions and 0 deletions
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2
libc/Makefile
View File

@ -2,9 +2,11 @@ build:
cp include/* ../out/system/include
make --quiet -C runtime build
make --quiet -C libgcc build
make --quiet -C libssp build
make --quiet -C src build
clean:
make --quiet -C runtime clean
make --quiet -C libgcc clean
make --quiet -C libssp clean
make --quiet -C src clean

44
libc/libssp/Makefile Normal file
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@ -0,0 +1,44 @@
# Config file
include ../../../Makefile.conf
NAME=ssp
OBJECT_NAME=lib$(NAME).a
OUTPUT_DIR=../../out/system/lib/
CC = ../../../$(COMPILER_PATH)/$(COMPILER_ARCH)gcc
AR = ../../../$(COMPILER_PATH)/$(COMPILER_ARCH)ar
NASM = /usr/bin/nasm
C_SOURCES = $(shell find ./ -type f -name '*.c')
S_SOURCES = $(shell find ./ -type f -name '*.s')
ASM_SOURCES = $(shell find ./ -type f -name '*.asm')
OBJ = ${C_SOURCES:.c=.o} ${ASM_SOURCES:.asm=.o} ${S_SOURCES:.s=.o}
INCLUDE_DIR = ../include
ifeq ($(OSARCH), amd64)
ASM_ARCH := elf64
else ifeq ($(OSARCH), i686)
ASM_ARCH := elf32
endif
CFLAGS := -fPIC -I$(INCLUDE_DIR)
build: $(OBJECT_NAME)
$(OBJECT_NAME): $(OBJ)
$(AR) rcs $(OUTPUT_DIR)$@ $(OBJ)
%.o: %.c $(HEADERS) $(HEADERS2)
$(CC) $(CFLAGS) -std=c17 -c $< -o $@
%.o: %.cpp $(HEADERS) $(HEADERS2)
$(CC) $(CFLAGS) -std=c++20 -c $< -o $@
%.o: %.asm
$(NASM) $< -f $(ASM_ARCH) -o $@
clean:

33
libc/libssp/ssp.c Normal file
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@ -0,0 +1,33 @@
#ifndef STACK_CHK_GUARD_VALUE
#if UINTPTR_MAX == UINT32_MAX
#define STACK_CHK_GUARD_VALUE 0xDEAD57AC
#else
#define STACK_CHK_GUARD_VALUE 0xDEAD57AC00000000
#endif
#endif
__UINTPTR_TYPE__ __stack_chk_guard = 0;
static void __attribute__((constructor, no_stack_protector)) __guard_setup(void)
{
if (__stack_chk_guard == 0)
__stack_chk_guard = STACK_CHK_GUARD_VALUE;
}
__attribute__((weak, noreturn, no_stack_protector)) void __stack_chk_fail(void)
{
const char *msg = "Stack smashing detected";
__asm__ __volatile__("syscall"
:
: "a"(0), "D"(0x57AC)
: "rcx", "r11", "memory");
}
__attribute__((weak, noreturn, no_stack_protector)) void __chk_fail(void)
{
const char *msg = "Buffer overflow detected";
__asm__ __volatile__("syscall"
:
: "a"(0), "D"(0xF700)
: "rcx", "r11", "memory");
}