With the changes proposed by rust-vmm/linux-loader#29, the test_badnote.bin and test_elfnote.bin binaries must be modified to use the correct name of "Xen" for the note header, as the PVH ABI specifies. I'm uploading the source files and the resulting binaries here. Built with:
gcc elfnote.S -s -nostdlib -o test_elfnote.bin
gcc badnote.S -s -nostdlib -o test_badnote.bin
| #define ELFNOTE_START(name, type, flags) \ | |
| .pushsection .note.name, flags, @note ; \ | |
| .balign 4 ; \ | |
| .long 2f - 1f /* namesz */ ; \ | |
| .long 4484f - 3f /* descsz */ ; \ | |
| .long type ; \ | |
| 1:.asciz #name ; \ | |
| 2:.balign 4 ; \ | |
| 3: | |
| #define ELFNOTE_END \ | |
| 4484:.balign 4 ; \ | |
| .popsection ; | |
| #define ELFNOTE(name, type, desc) \ | |
| ELFNOTE_START(name, type, "a") \ | |
| desc ; \ | |
| ELFNOTE_END | |
| #define XEN_ELFNOTE_PHYS32_ENTRY 18 | |
| #define NT_VERSION 1 | |
| ELFNOTE(dummy, NT_VERSION, .quad 0xcafecafe) | |
| ELFNOTE(Xen, XEN_ELFNOTE_PHYS32_ENTRY, .word 0x1e1f) | |
| .section ".text","ax" | |
| .global _start | |
| _start: |
| #define ELFNOTE_START(name, type, flags) \ | |
| .pushsection .note.name, flags, @note ; \ | |
| .balign 4 ; \ | |
| .long 2f - 1f /* namesz */ ; \ | |
| .long 4484f - 3f /* descsz */ ; \ | |
| .long type ; \ | |
| 1:.asciz #name ; \ | |
| 2:.balign 4 ; \ | |
| 3: | |
| #define ELFNOTE_END \ | |
| 4484:.balign 4 ; \ | |
| .popsection ; | |
| #define ELFNOTE(name, type, desc) \ | |
| ELFNOTE_START(name, type, "a") \ | |
| desc ; \ | |
| ELFNOTE_END | |
| #define XEN_ELFNOTE_PHYS32_ENTRY 18 | |
| #define NT_VERSION 1 | |
| ELFNOTE(dummy, NT_VERSION, .quad 0xcafecafe) | |
| ELFNOTE(Xen, XEN_ELFNOTE_PHYS32_ENTRY, .quad 0x1e1fe1f) | |
| .section ".text","ax" | |
| .global _start | |
| _start: |