/linuxrc and its Makefile

server ~/ateb9200/example # cat ./linuxrc.c

int main(int arc, char **argv)
{
  while (1);
  return 0;
}

server ~/ateb9200/example # cat ./stubstart.S
.globl _start

_start:
	BL main


server ~/ateb9200/example # cat ./Makefile
CC=arm-softfloat-linux-gnueabi-gcc
CFLAGS= -static -nostdlib -O2 -Wall -pedantic -std=c89

linuxrc:	linuxrc.o
		$(CC) $(CFLAGS) stubstart.S -o linuxrc linuxrc.o
		arm-softfloat-linux-gnueabi-strip --strip-unneeded linuxrc
linuxrc.o:	linuxrc.c
		$(CC) $(CFLAGS) -c linuxrc.c
clean:
		rm -f *.o *~ linuxrc


server ~/ateb9200/example # make
arm-softfloat-linux-gnueabi-gcc -static -nostdlib -O2 -Wall -pedantic -std=c89 -c linuxrc.c
arm-softfloat-linux-gnueabi-gcc -static -nostdlib -O2 -Wall -pedantic -std=c89 stubstart.S -o linuxrc linuxrc.o
arm-softfloat-linux-gnueabi-strip --strip-unneeded linuxrc


server ~/ateb9200/example # ls -la ./linuxrc
-rwxrwxrwx 1 root root 440 Jan 18 22:04 ./linuxrc


server ~/ateb9200/example # readelf -h ./linuxrc
ELF Header:
  Magic:   7f 45 4c 46 01 01 01 00 00 00 00 00 00 00 00 00
  Class:                             ELF32
  Data:                              2's complement, little endian
  Version:                           1 (current)
  OS/ABI:                            UNIX - System V
  ABI Version:                       0
  Type:                              EXEC (Executable file)
  Machine:                           ARM
  Version:                           0x1
  Entry point address:               0x10078
  Start of program headers:          52 (bytes into file)
  Start of section headers:          240 (bytes into file)
  Flags:                             0x5000200, Version5 EABI, soft-float ABI
  Size of this header:               52 (bytes)
  Size of program headers:           32 (bytes)
  Number of program headers:         2
  Size of section headers:           40 (bytes)
  Number of section headers:         5
  Section header string table index: 4


server ~/ateb9200/example # readelf -A ./linuxrc
Attribute Section: aeabi
File Attributes
  Tag_CPU_name: "5T"
  Tag_CPU_arch: v5T
  Tag_ARM_ISA_use: Yes
  Tag_THUMB_ISA_use: Thumb-1
  Tag_ABI_PCS_wchar_t: 4
  Tag_ABI_FP_denormal: Needed
  Tag_ABI_FP_exceptions: Needed
  Tag_ABI_FP_number_model: IEEE 754
  Tag_ABI_align_needed: 8-byte
  Tag_ABI_enum_size: int

server /usr/arm-softfloat-linux-gnueabi/lib # readelf -h ./libc-2.32.so
ELF Header:
  Magic:   7f 45 4c 46 01 01 01 00 00 00 00 00 00 00 00 00
  Class:                             ELF32
  Data:                              2's complement, little endian
  Version:                           1 (current)
  OS/ABI:                            UNIX - System V
  ABI Version:                       0
  Type:                              DYN (Shared object file)
  Machine:                           ARM
  Version:                           0x1
  Entry point address:               0x17e10
  Start of program headers:          52 (bytes into file)
  Start of section headers:          1648456 (bytes into file)
  Flags:                             0x5000200, Version5 EABI, soft-float ABI
  Size of this header:               52 (bytes)
  Size of program headers:           32 (bytes)
  Number of program headers:         10
  Size of section headers:           40 (bytes)
  Number of section headers:         67
  Section header string table index: 66


server /usr/arm-softfloat-linux-gnueabi/lib # readelf -A ./libc-2.32.so
Attribute Section: aeabi
File Attributes
  Tag_CPU_name: "ARM10TDMI"
  Tag_CPU_arch: v5T
  Tag_ARM_ISA_use: Yes
  Tag_THUMB_ISA_use: Thumb-1
  Tag_ABI_PCS_wchar_t: 4
  Tag_ABI_FP_rounding: Needed
  Tag_ABI_FP_denormal: Needed
  Tag_ABI_FP_exceptions: Needed
  Tag_ABI_FP_user_exceptions: Needed
  Tag_ABI_FP_number_model: IEEE 754
  Tag_ABI_align_needed: 8-byte
  Tag_ABI_align_preserved: 8-byte, except leaf SP
  Tag_ABI_enum_size: int
  Tag_ABI_optimization_goals: Aggressive Speed