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Trim down executable sizes

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This commit is contained in:
Justine Tunney 2021-02-11 08:37:18 -08:00
parent ec69413f83
commit bfa8581537
19 changed files with 1176 additions and 131 deletions
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23
ape/ape.S
View file

@ -117,11 +117,7 @@ rlstr: .endobj rlstr,globl,hidden # ←for gdb readibility
//
// @param dl is drive number
// @noreturn
ape_mz: .ascii "MZ" # Mark 'Zibo' Joseph Zbikowski
jno 2f # MZ: bytes on last page
jo 2f # MZ: 512-byte pages in file
.ascii "='" # MZ: reloc table entry count
.ascii "\n\0" # MZ: data segment file offset / 16
ape_mz: .asciz "MZqFpD='\n" # Mark 'Zibo' Joseph Zbikowski
.short 0x1000 # MZ: lowers upper bound load / 16
.short 0xf800 # MZ: roll greed on bss
.short 0 # MZ: lower bound on stack segment
@ -174,6 +170,8 @@ ape_mz: .ascii "MZ" # Mark 'Zibo' Joseph Zbikowski
#endif /* SupportsWindows() || SupportsXnu() */
#if SupportsMetal()
// Disk Operating System Stub
//
// @param dl is drive number
@ -190,7 +188,7 @@ stub: mov $0x40,%dl # *literally* dos
3: .byte 0xbd,0,0 # a.k.a. mov imm,%bp
jmp pc # real mode, is real
jmp _start # surprise it's unix
// .endfn stub
.endfn stub
/*─────────────────────────────────────────────────────────────────────────────╗
│ αcτµαlly pδrταblε εxεcµταblε § ibm personal computer │
@ -224,7 +222,6 @@ pc: cld
xor %cx,%cx
mov %cx,%es
rlstack %di,%cx
#if SupportsMetal()
push %cs # memcpy() [relocate this page]
pop %ds
call 1f
@ -472,6 +469,8 @@ ape_disk:
╚────────────────────────────────────────────────────────────────────────────│─╝
the bourne executable & linkable format */
#if SupportsSystemv()
#if SupportsWindows() || SupportsXnu()
apesh: .ascii "'\n#'\"\n" # sixth edition shebang
.ascii "o=\"$(command -v \"$0\")\"\n"
@ -530,10 +529,6 @@ apesh: .ascii "'\n#'\"\n" # sixth edition shebang
#endif /* SupportsWindows() || SupportsXnu() */
.section .elf.phdrs,"a",@progbits
.align __SIZEOF_POINTER__
.type ape_phdrs,@object
.globl ape_phdrs
ape_phdrs:
.long PT_LOAD # text segment
.long PF_R|PF_X
.stub ape_rom_offset,quad
@ -542,7 +537,6 @@ ape_phdrs:
.stub ape_rom_filesz,quad
.stub ape_rom_memsz,quad
.stub ape_rom_align,quad
.align __SIZEOF_POINTER__
.long PT_LOAD # data segment
.long PF_R|PF_W
.stub ape_ram_offset,quad
@ -554,7 +548,6 @@ ape_phdrs:
#if SupportsLinux()
// Linux ignores mprotect() and returns 0 without this lool
// It has nothing to do with the stack, which is still exec
.align __SIZEOF_POINTER__
.long PT_GNU_STACK # p_type
.long PF_R|PF_W # p_flags
.quad 0 # p_offset
@ -565,7 +558,6 @@ ape_phdrs:
.quad 16 # p_align
#endif
#if SupportsOpenbsd() || SupportsNetbsd()
.align __SIZEOF_POINTER__
.long PT_NOTE # notes
.long PF_R
.stub ape_note_offset,quad
@ -605,6 +597,8 @@ netbsd.ident:
.previous
#endif /* SupportsNetbsd() */
#endif /* SupportsSystemv() */
/* ▄▄███▄
▄▄████████▄
▄█████████████▄
@ -1565,6 +1559,7 @@ metal:
.type ape_note,@object
.type ape_note_end,@object
.type ape_note_vaddr,@object
.type ape_phdrs,@object
.type ape_pe_sections,@object
.type ape_pe_sections_end,@object
.type ape_text_nops,@object

8
ape/ape.lds
View file

@ -201,21 +201,19 @@ SECTIONS {
/* Real Mode */
KEEP(*(.head))
. += 1;
/* Executable & Linkable Format */
. = ALIGN(. != 0 ? __SIZEOF_POINTER__ : 1);
. = ALIGN(__SIZEOF_POINTER__);
HIDDEN(ape_phdrs = .);
KEEP(*(.elf.phdrs))
HIDDEN(ape_phdrs_end = .);
. += 1;
/* OpenBSD */
. = ALIGN(. != 0 ? __SIZEOF_POINTER__ : 1);
. = ALIGN(__SIZEOF_POINTER__);
HIDDEN(ape_note = .);
KEEP(*(.note.openbsd.ident))
KEEP(*(.note.netbsd.ident))
HIDDEN(ape_note_end = .);
. += 1;
/* Portable Executable */
KEEP(*(.pe.header))