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Allocate data area

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This commit is contained in:
Koichi Nakamura 2020-12-28 22:42:06 +09:00
parent 19356dfb7d
commit b88eec6440
1 changed files with 12 additions and 4 deletions
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16
planck.xxd
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@ -1,12 +1,20 @@
00000000: 7f45 4c46 0101 0100 # planckforth -
00000008: 0000 0000 0000 0000 # Copyright (C) 2020 nineties
00000010: 0200 0300 0100 0000 ET_EXEC,EM_386,EV_CURRENT
00000018: 5480 0408 3400 0000 e_entry=0x08048054,e_phoff=<phdr>
00000018: 7080 0408 3400 0000 e_entry=0x08048070,e_phoff=<phdr>
00000020: 0000 0000 0000 0000 e_shoff,e_flags
00000028: 3400 2000 0100 0000 e_ehsize,e_phentsize,e_phnum,e_shentsize
00000030: 0000 0000 0100 0000 e_shnum,e_shstrndx,<phdr> PT_LOAD
00000038: 0000 0000 0080 0408 p_offset,p_vaddr=0x08048000
00000040: 0000 0000 6000 0000 p_paddr,p_filesz
00000040: 0000 0000 7c00 0000 p_paddr,p_filesz
00000048: 0000 0008 0700 0000 p_memsz(128MB),PF_X|PF_W|PF_R
00000050: 0010 0000 bb00 0000 p_align, <segment>(54: mov ebx, 0)
00000058: 00b8 0100 0000 cd80 (59: mov eax, 1) (5e: int 0x80)
00000050: 0010 0000 0000 0000 p_align, <segment>(54: here)
00000058: 0000 0000 0000 0000 (58: latest) <the interpreter>(5c: key)
00000060: 0000 0000 0000 0000 (60: find) (64: execute)
00000068: 0000 0000 f0ff ffff (68: jump) (6c: -16)
00000070: bb00 0000 00b8 0100 <entrypoint>(70: mov ebx,0) (75: mov eax,SYS_EXIT)
00000078: 0000 cd80 (7a: int 0x80)
Note:
For simplicity, I place all data and programs in a single memory area
from address 0x08048000.