[After Custom Rust Target] ELF Header for Rust Compiler Output: Double-Precision Hardware Floating-Point. See https://github.com/lupyuen/nuttx-rust-app

rust-elf-header-after.log

## [After Custom Rust Target]
## ELF Header for Rust Compiler Output:
## Double-Precision Hardware Floating-Point
$ riscv64-unknown-elf-readelf \
  --file-header --arch-specific \
  ../apps/examples/hello_rust/*hello_rust.o

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:                              REL (Relocatable file)
  Machine:                           RISC-V
  Version:                           0x1
  Entry point address:               0x0
  Start of program headers:          0 (bytes into file)
  Start of section headers:          10352 (bytes into file)
  Flags:                             0x5, RVC, double-float ABI
  Size of this header:               52 (bytes)
  Size of program headers:           0 (bytes)
  Number of program headers:         0
  Size of section headers:           40 (bytes)
  Number of section headers:         29
  Section header string table index: 1
Attribute Section: riscv
File Attributes
  Tag_RISCV_stack_align: 16-bytes
  Tag_RISCV_arch: "rv32i2p1_m2p0_a2p1_f2p2_d2p2_c2p0_zicsr2p0"