X-Git-Url: https://git.hcoop.net/bpt/emacs.git/blobdiff_plain/d4e3d7f27089ee0dfc29e4788de124afc435eaec..76b6f7075970e492eba3cf3f4411fcfc4ff3bdcd:/src/unexelf.c diff --git a/src/unexelf.c b/src/unexelf.c index d0543dc41c..6213aaf88f 100644 --- a/src/unexelf.c +++ b/src/unexelf.c @@ -1,12 +1,13 @@ -/* Copyright (C) 1985, 1986, 1987, 1988, 1990, 1992, 1999, 2000, 2001 - Free Software Foundation, Inc. +/* Copyright (C) 1985, 1986, 1987, 1988, 1990, 1992, 1999, 2000, 2001, + 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009 + Free Software Foundation, Inc. This file is part of GNU Emacs. -GNU Emacs is free software; you can redistribute it and/or modify +GNU Emacs is free software: you can redistribute it and/or modify it under the terms of the GNU General Public License as published by -the Free Software Foundation; either version 2, or (at your option) -any later version. +the Free Software Foundation, either version 3 of the License, or +(at your option) any later version. GNU Emacs is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of @@ -14,10 +15,9 @@ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details. You should have received a copy of the GNU General Public License -along with GNU Emacs; see the file COPYING. If not, write to -the Free Software Foundation, Inc., 59 Temple Place - Suite 330, -Boston, MA 02111-1307, USA. +along with GNU Emacs. If not, see . */ +/* In other words, you are welcome to use, share and improve this program. You are forbidden to forbid anyone else to use, share and improve what you give them. Help stamp out software-hoarding! */ @@ -89,224 +89,224 @@ raid:/nfs/raid/src/dist-18.56/src> dump -h temacs temacs: **** SECTION HEADER TABLE **** -[No] Type Flags Addr Offset Size Name - Link Info Adralgn Entsize + [No] Type Flags Addr Offset Size Name + Link Info Adralgn Entsize -[1] 1 2 0x80480d4 0xd4 0x13 .interp - 0 0 0x1 0 + [1] 1 2 0x80480d4 0xd4 0x13 .interp + 0 0 0x1 0 -[2] 5 2 0x80480e8 0xe8 0x388 .hash - 3 0 0x4 0x4 + [2] 5 2 0x80480e8 0xe8 0x388 .hash + 3 0 0x4 0x4 -[3] 11 2 0x8048470 0x470 0x7f0 .dynsym - 4 1 0x4 0x10 + [3] 11 2 0x8048470 0x470 0x7f0 .dynsym + 4 1 0x4 0x10 -[4] 3 2 0x8048c60 0xc60 0x3ad .dynstr - 0 0 0x1 0 + [4] 3 2 0x8048c60 0xc60 0x3ad .dynstr + 0 0 0x1 0 -[5] 9 2 0x8049010 0x1010 0x338 .rel.plt - 3 7 0x4 0x8 + [5] 9 2 0x8049010 0x1010 0x338 .rel.plt + 3 7 0x4 0x8 -[6] 1 6 0x8049348 0x1348 0x3 .init - 0 0 0x4 0 + [6] 1 6 0x8049348 0x1348 0x3 .init + 0 0 0x4 0 -[7] 1 6 0x804934c 0x134c 0x680 .plt - 0 0 0x4 0x4 + [7] 1 6 0x804934c 0x134c 0x680 .plt + 0 0 0x4 0x4 -[8] 1 6 0x80499cc 0x19cc 0x3c56f .text - 0 0 0x4 0 + [8] 1 6 0x80499cc 0x19cc 0x3c56f .text + 0 0 0x4 0 -[9] 1 6 0x8085f3c 0x3df3c 0x3 .fini - 0 0 0x4 0 + [9] 1 6 0x8085f3c 0x3df3c 0x3 .fini + 0 0 0x4 0 -[10] 1 2 0x8085f40 0x3df40 0x69c .rodata - 0 0 0x4 0 + [10] 1 2 0x8085f40 0x3df40 0x69c .rodata + 0 0 0x4 0 -[11] 1 2 0x80865dc 0x3e5dc 0xd51 .rodata1 - 0 0 0x4 0 + [11] 1 2 0x80865dc 0x3e5dc 0xd51 .rodata1 + 0 0 0x4 0 -[12] 1 3 0x8088330 0x3f330 0x20afc .data - 0 0 0x4 0 + [12] 1 3 0x8088330 0x3f330 0x20afc .data + 0 0 0x4 0 -[13] 1 3 0x80a8e2c 0x5fe2c 0x89d .data1 - 0 0 0x4 0 + [13] 1 3 0x80a8e2c 0x5fe2c 0x89d .data1 + 0 0 0x4 0 -[14] 1 3 0x80a96cc 0x606cc 0x1a8 .got - 0 0 0x4 0x4 + [14] 1 3 0x80a96cc 0x606cc 0x1a8 .got + 0 0 0x4 0x4 -[15] 6 3 0x80a9874 0x60874 0x80 .dynamic - 4 0 0x4 0x8 + [15] 6 3 0x80a9874 0x60874 0x80 .dynamic + 4 0 0x4 0x8 -[16] 8 3 0x80a98f4 0x608f4 0x449c .bss - 0 0 0x4 0 + [16] 8 3 0x80a98f4 0x608f4 0x449c .bss + 0 0 0x4 0 -[17] 2 0 0 0x608f4 0x9b90 .symtab - 18 371 0x4 0x10 + [17] 2 0 0 0x608f4 0x9b90 .symtab + 18 371 0x4 0x10 -[18] 3 0 0 0x6a484 0x8526 .strtab - 0 0 0x1 0 + [18] 3 0 0 0x6a484 0x8526 .strtab + 0 0 0x1 0 -[19] 3 0 0 0x729aa 0x93 .shstrtab - 0 0 0x1 0 + [19] 3 0 0 0x729aa 0x93 .shstrtab + 0 0 0x1 0 -[20] 1 0 0 0x72a3d 0x68b7 .comment - 0 0 0x1 0 + [20] 1 0 0 0x72a3d 0x68b7 .comment + 0 0 0x1 0 -raid:/nfs/raid/src/dist-18.56/src> dump -h xemacs + raid:/nfs/raid/src/dist-18.56/src> dump -h xemacs -xemacs: + xemacs: - **** SECTION HEADER TABLE **** -[No] Type Flags Addr Offset Size Name - Link Info Adralgn Entsize + **** SECTION HEADER TABLE **** + [No] Type Flags Addr Offset Size Name + Link Info Adralgn Entsize -[1] 1 2 0x80480d4 0xd4 0x13 .interp - 0 0 0x1 0 + [1] 1 2 0x80480d4 0xd4 0x13 .interp + 0 0 0x1 0 -[2] 5 2 0x80480e8 0xe8 0x388 .hash - 3 0 0x4 0x4 + [2] 5 2 0x80480e8 0xe8 0x388 .hash + 3 0 0x4 0x4 -[3] 11 2 0x8048470 0x470 0x7f0 .dynsym - 4 1 0x4 0x10 + [3] 11 2 0x8048470 0x470 0x7f0 .dynsym + 4 1 0x4 0x10 -[4] 3 2 0x8048c60 0xc60 0x3ad .dynstr - 0 0 0x1 0 + [4] 3 2 0x8048c60 0xc60 0x3ad .dynstr + 0 0 0x1 0 -[5] 9 2 0x8049010 0x1010 0x338 .rel.plt - 3 7 0x4 0x8 + [5] 9 2 0x8049010 0x1010 0x338 .rel.plt + 3 7 0x4 0x8 -[6] 1 6 0x8049348 0x1348 0x3 .init - 0 0 0x4 0 + [6] 1 6 0x8049348 0x1348 0x3 .init + 0 0 0x4 0 -[7] 1 6 0x804934c 0x134c 0x680 .plt - 0 0 0x4 0x4 + [7] 1 6 0x804934c 0x134c 0x680 .plt + 0 0 0x4 0x4 -[8] 1 6 0x80499cc 0x19cc 0x3c56f .text - 0 0 0x4 0 + [8] 1 6 0x80499cc 0x19cc 0x3c56f .text + 0 0 0x4 0 -[9] 1 6 0x8085f3c 0x3df3c 0x3 .fini - 0 0 0x4 0 + [9] 1 6 0x8085f3c 0x3df3c 0x3 .fini + 0 0 0x4 0 -[10] 1 2 0x8085f40 0x3df40 0x69c .rodata - 0 0 0x4 0 + [10] 1 2 0x8085f40 0x3df40 0x69c .rodata + 0 0 0x4 0 -[11] 1 2 0x80865dc 0x3e5dc 0xd51 .rodata1 - 0 0 0x4 0 + [11] 1 2 0x80865dc 0x3e5dc 0xd51 .rodata1 + 0 0 0x4 0 -[12] 1 3 0x8088330 0x3f330 0x20afc .data - 0 0 0x4 0 + [12] 1 3 0x8088330 0x3f330 0x20afc .data + 0 0 0x4 0 -[13] 1 3 0x80a8e2c 0x5fe2c 0x89d .data1 - 0 0 0x4 0 + [13] 1 3 0x80a8e2c 0x5fe2c 0x89d .data1 + 0 0 0x4 0 -[14] 1 3 0x80a96cc 0x606cc 0x1a8 .got - 0 0 0x4 0x4 + [14] 1 3 0x80a96cc 0x606cc 0x1a8 .got + 0 0 0x4 0x4 -[15] 6 3 0x80a9874 0x60874 0x80 .dynamic - 4 0 0x4 0x8 + [15] 6 3 0x80a9874 0x60874 0x80 .dynamic + 4 0 0x4 0x8 -[16] 8 3 0x80c6800 0x7d800 0 .bss - 0 0 0x4 0 + [16] 8 3 0x80c6800 0x7d800 0 .bss + 0 0 0x4 0 -[17] 2 0 0 0x7d800 0x9b90 .symtab - 18 371 0x4 0x10 + [17] 2 0 0 0x7d800 0x9b90 .symtab + 18 371 0x4 0x10 -[18] 3 0 0 0x87390 0x8526 .strtab - 0 0 0x1 0 + [18] 3 0 0 0x87390 0x8526 .strtab + 0 0 0x1 0 -[19] 3 0 0 0x8f8b6 0x93 .shstrtab - 0 0 0x1 0 + [19] 3 0 0 0x8f8b6 0x93 .shstrtab + 0 0 0x1 0 -[20] 1 0 0 0x8f949 0x68b7 .comment - 0 0 0x1 0 + [20] 1 0 0 0x8f949 0x68b7 .comment + 0 0 0x1 0 -[21] 1 3 0x80a98f4 0x608f4 0x1cf0c .data - 0 0 0x4 0 + [21] 1 3 0x80a98f4 0x608f4 0x1cf0c .data + 0 0 0x4 0 - * This is an example of how the file header is changed. "Shoff" is - * the section header offset within the file. Since that table is - * after the new .data section, it is moved. "Shnum" is the number of - * sections, which we increment. - * - * "Phoff" is the file offset to the program header. "Phentsize" and - * "Shentsz" are the program and section header entries sizes respectively. - * These can be larger than the apparent struct sizes. + * This is an example of how the file header is changed. "Shoff" is + * the section header offset within the file. Since that table is + * after the new .data section, it is moved. "Shnum" is the number of + * sections, which we increment. + * + * "Phoff" is the file offset to the program header. "Phentsize" and + * "Shentsz" are the program and section header entries sizes respectively. + * These can be larger than the apparent struct sizes. -raid:/nfs/raid/src/dist-18.56/src> dump -f temacs + raid:/nfs/raid/src/dist-18.56/src> dump -f temacs -temacs: + temacs: - **** ELF HEADER **** -Class Data Type Machine Version -Entry Phoff Shoff Flags Ehsize -Phentsize Phnum Shentsz Shnum Shstrndx + **** ELF HEADER **** + Class Data Type Machine Version + Entry Phoff Shoff Flags Ehsize + Phentsize Phnum Shentsz Shnum Shstrndx -1 1 2 3 1 -0x80499cc 0x34 0x792f4 0 0x34 -0x20 5 0x28 21 19 + 1 1 2 3 1 + 0x80499cc 0x34 0x792f4 0 0x34 + 0x20 5 0x28 21 19 -raid:/nfs/raid/src/dist-18.56/src> dump -f xemacs + raid:/nfs/raid/src/dist-18.56/src> dump -f xemacs -xemacs: + xemacs: - **** ELF HEADER **** -Class Data Type Machine Version -Entry Phoff Shoff Flags Ehsize -Phentsize Phnum Shentsz Shnum Shstrndx + **** ELF HEADER **** + Class Data Type Machine Version + Entry Phoff Shoff Flags Ehsize + Phentsize Phnum Shentsz Shnum Shstrndx -1 1 2 3 1 -0x80499cc 0x34 0x96200 0 0x34 -0x20 5 0x28 22 19 + 1 1 2 3 1 + 0x80499cc 0x34 0x96200 0 0x34 + 0x20 5 0x28 22 19 - * These are the program headers. "Offset" is the file offset to the - * segment. "Vaddr" is the memory load address. "Filesz" is the - * segment size as it appears in the file, and "Memsz" is the size in - * memory. Below, the third segment is the code and the fourth is the - * data: the difference between Filesz and Memsz is .bss + * These are the program headers. "Offset" is the file offset to the + * segment. "Vaddr" is the memory load address. "Filesz" is the + * segment size as it appears in the file, and "Memsz" is the size in + * memory. Below, the third segment is the code and the fourth is the + * data: the difference between Filesz and Memsz is .bss -raid:/nfs/raid/src/dist-18.56/src> dump -o temacs + raid:/nfs/raid/src/dist-18.56/src> dump -o temacs -temacs: - ***** PROGRAM EXECUTION HEADER ***** -Type Offset Vaddr Paddr -Filesz Memsz Flags Align + temacs: + ***** PROGRAM EXECUTION HEADER ***** + Type Offset Vaddr Paddr + Filesz Memsz Flags Align -6 0x34 0x8048034 0 -0xa0 0xa0 5 0 + 6 0x34 0x8048034 0 + 0xa0 0xa0 5 0 -3 0xd4 0 0 -0x13 0 4 0 + 3 0xd4 0 0 + 0x13 0 4 0 -1 0x34 0x8048034 0 -0x3f2f9 0x3f2f9 5 0x1000 + 1 0x34 0x8048034 0 + 0x3f2f9 0x3f2f9 5 0x1000 -1 0x3f330 0x8088330 0 -0x215c4 0x25a60 7 0x1000 + 1 0x3f330 0x8088330 0 + 0x215c4 0x25a60 7 0x1000 -2 0x60874 0x80a9874 0 -0x80 0 7 0 + 2 0x60874 0x80a9874 0 + 0x80 0 7 0 -raid:/nfs/raid/src/dist-18.56/src> dump -o xemacs + raid:/nfs/raid/src/dist-18.56/src> dump -o xemacs -xemacs: - ***** PROGRAM EXECUTION HEADER ***** -Type Offset Vaddr Paddr -Filesz Memsz Flags Align + xemacs: + ***** PROGRAM EXECUTION HEADER ***** + Type Offset Vaddr Paddr + Filesz Memsz Flags Align -6 0x34 0x8048034 0 -0xa0 0xa0 5 0 + 6 0x34 0x8048034 0 + 0xa0 0xa0 5 0 -3 0xd4 0 0 -0x13 0 4 0 + 3 0xd4 0 0 + 0x13 0 4 0 -1 0x34 0x8048034 0 -0x3f2f9 0x3f2f9 5 0x1000 + 1 0x34 0x8048034 0 + 0x3f2f9 0x3f2f9 5 0x1000 -1 0x3f330 0x8088330 0 -0x3e4d0 0x3e4d0 7 0x1000 + 1 0x3f330 0x8088330 0 + 0x3e4d0 0x3e4d0 7 0x1000 -2 0x60874 0x80a9874 0 -0x80 0 7 0 + 2 0x60874 0x80a9874 0 + 0x80 0 7 0 */ @@ -336,71 +336,71 @@ Filesz Memsz Flags Align * The above example now should look like: **** SECTION HEADER TABLE **** -[No] Type Flags Addr Offset Size Name - Link Info Adralgn Entsize + [No] Type Flags Addr Offset Size Name + Link Info Adralgn Entsize -[1] 1 2 0x80480d4 0xd4 0x13 .interp - 0 0 0x1 0 + [1] 1 2 0x80480d4 0xd4 0x13 .interp + 0 0 0x1 0 -[2] 5 2 0x80480e8 0xe8 0x388 .hash - 3 0 0x4 0x4 + [2] 5 2 0x80480e8 0xe8 0x388 .hash + 3 0 0x4 0x4 -[3] 11 2 0x8048470 0x470 0x7f0 .dynsym - 4 1 0x4 0x10 + [3] 11 2 0x8048470 0x470 0x7f0 .dynsym + 4 1 0x4 0x10 -[4] 3 2 0x8048c60 0xc60 0x3ad .dynstr - 0 0 0x1 0 + [4] 3 2 0x8048c60 0xc60 0x3ad .dynstr + 0 0 0x1 0 -[5] 9 2 0x8049010 0x1010 0x338 .rel.plt - 3 7 0x4 0x8 + [5] 9 2 0x8049010 0x1010 0x338 .rel.plt + 3 7 0x4 0x8 -[6] 1 6 0x8049348 0x1348 0x3 .init - 0 0 0x4 0 + [6] 1 6 0x8049348 0x1348 0x3 .init + 0 0 0x4 0 -[7] 1 6 0x804934c 0x134c 0x680 .plt - 0 0 0x4 0x4 + [7] 1 6 0x804934c 0x134c 0x680 .plt + 0 0 0x4 0x4 -[8] 1 6 0x80499cc 0x19cc 0x3c56f .text - 0 0 0x4 0 + [8] 1 6 0x80499cc 0x19cc 0x3c56f .text + 0 0 0x4 0 -[9] 1 6 0x8085f3c 0x3df3c 0x3 .fini - 0 0 0x4 0 + [9] 1 6 0x8085f3c 0x3df3c 0x3 .fini + 0 0 0x4 0 -[10] 1 2 0x8085f40 0x3df40 0x69c .rodata - 0 0 0x4 0 + [10] 1 2 0x8085f40 0x3df40 0x69c .rodata + 0 0 0x4 0 -[11] 1 2 0x80865dc 0x3e5dc 0xd51 .rodata1 - 0 0 0x4 0 + [11] 1 2 0x80865dc 0x3e5dc 0xd51 .rodata1 + 0 0 0x4 0 -[12] 1 3 0x8088330 0x3f330 0x20afc .data - 0 0 0x4 0 + [12] 1 3 0x8088330 0x3f330 0x20afc .data + 0 0 0x4 0 -[13] 1 3 0x80a8e2c 0x5fe2c 0x89d .data1 - 0 0 0x4 0 + [13] 1 3 0x80a8e2c 0x5fe2c 0x89d .data1 + 0 0 0x4 0 -[14] 1 3 0x80a96cc 0x606cc 0x1a8 .got - 0 0 0x4 0x4 + [14] 1 3 0x80a96cc 0x606cc 0x1a8 .got + 0 0 0x4 0x4 -[15] 6 3 0x80a9874 0x60874 0x80 .dynamic - 4 0 0x4 0x8 + [15] 6 3 0x80a9874 0x60874 0x80 .dynamic + 4 0 0x4 0x8 -[16] 1 3 0x80a98f4 0x608f4 0x1cf0c .data - 0 0 0x4 0 + [16] 1 3 0x80a98f4 0x608f4 0x1cf0c .data + 0 0 0x4 0 -[17] 8 3 0x80c6800 0x7d800 0 .bss - 0 0 0x4 0 + [17] 8 3 0x80c6800 0x7d800 0 .bss + 0 0 0x4 0 -[18] 2 0 0 0x7d800 0x9b90 .symtab - 19 371 0x4 0x10 + [18] 2 0 0 0x7d800 0x9b90 .symtab + 19 371 0x4 0x10 -[19] 3 0 0 0x87390 0x8526 .strtab - 0 0 0x1 0 + [19] 3 0 0 0x87390 0x8526 .strtab + 0 0 0x1 0 -[20] 3 0 0 0x8f8b6 0x93 .shstrtab - 0 0 0x1 0 + [20] 3 0 0 0x8f8b6 0x93 .shstrtab + 0 0 0x1 0 -[21] 1 0 0 0x8f949 0x68b7 .comment - 0 0 0x1 0 + [21] 1 0 0 0x8f949 0x68b7 .comment + 0 0 0x1 0 */ @@ -412,7 +412,7 @@ Filesz Memsz Flags Align #include #else #include -extern void fatal (char *, ...); +extern void fatal (const char *msgid, ...); #endif #include @@ -426,10 +426,10 @@ extern void fatal (char *, ...); #include #endif #include -#if defined (__sony_news) && defined (_SYSTYPE_SYSV) +#if defined (_SYSTYPE_SYSV) #include #include -#endif /* __sony_news && _SYSTYPE_SYSV */ +#endif /* _SYSTYPE_SYSV */ #if __sgi #include /* for HDRR declaration */ #endif /* __sgi */ @@ -476,7 +476,7 @@ typedef struct { long cbFdOffset; long cbRfdOffset; long cbExtOffset; -} HDRR, *pHDRR; +} HDRR, *pHDRR; #define cbHDRR sizeof(HDRR) #define hdrNil ((pHDRR)0) #endif @@ -682,7 +682,7 @@ unexec (new_name, old_name, data_start, bss_start, entry_address) ElfW(Addr) new_data2_addr; int n, nn; - int old_bss_index, old_sbss_index; + int old_bss_index, old_sbss_index, old_plt_index; int old_data_index, new_data2_index; int old_mdebug_index; struct stat stat_buf; @@ -702,7 +702,7 @@ unexec (new_name, old_name, data_start, bss_start, entry_address) #if MAP_ANON == 0 mmap_fd = open ("/dev/zero", O_RDONLY); if (mmap_fd < 0) - fatal ("Can't open /dev/zero for reading: errno %d\n", errno); + fatal ("Can't open /dev/zero for reading: errno %d\n", errno, 0); #endif /* We cannot use malloc here because that may use sbrk. If it does, @@ -713,7 +713,7 @@ unexec (new_name, old_name, data_start, bss_start, entry_address) old_base = mmap (NULL, old_file_size, PROT_READ | PROT_WRITE, MAP_ANON | MAP_PRIVATE, mmap_fd, 0); if (old_base == MAP_FAILED) - fatal ("Can't allocate buffer for %s\n", old_name); + fatal ("Can't allocate buffer for %s\n", old_name, 0); if (read (old_file, old_base, stat_buf.st_size) != stat_buf.st_size) fatal ("Didn't read all of %s: errno %d\n", old_name, errno); @@ -740,15 +740,34 @@ unexec (new_name, old_name, data_start, bss_start, entry_address) old_sbss_index = find_section (".sbss", old_section_names, old_name, old_file_h, old_section_h, 1); if (old_sbss_index != -1) - if (OLD_SECTION_H (old_sbss_index).sh_type == SHT_PROGBITS) + if (OLD_SECTION_H (old_sbss_index).sh_type != SHT_NOBITS) old_sbss_index = -1; - if (old_sbss_index == -1) + /* PowerPC64 has .plt in the BSS section. */ + old_plt_index = find_section (".plt", old_section_names, + old_name, old_file_h, old_section_h, 1); + if (old_plt_index != -1) + if (OLD_SECTION_H (old_plt_index).sh_type != SHT_NOBITS) + old_plt_index = -1; + + if (old_sbss_index == -1 && old_plt_index == -1) { old_bss_addr = OLD_SECTION_H (old_bss_index).sh_addr; old_bss_size = OLD_SECTION_H (old_bss_index).sh_size; new_data2_index = old_bss_index; } + else if (old_plt_index != -1 + && (old_sbss_index == -1 + || (OLD_SECTION_H (old_sbss_index).sh_addr + > OLD_SECTION_H (old_plt_index).sh_addr))) + { + old_bss_addr = OLD_SECTION_H (old_plt_index).sh_addr; + old_bss_size = OLD_SECTION_H (old_bss_index).sh_size + + OLD_SECTION_H (old_plt_index).sh_size; + if (old_sbss_index != -1) + old_bss_size += OLD_SECTION_H (old_sbss_index).sh_size; + new_data2_index = old_plt_index; + } else { old_bss_addr = OLD_SECTION_H (old_sbss_index).sh_addr; @@ -802,7 +821,7 @@ unexec (new_name, old_name, data_start, bss_start, entry_address) new_base = mmap (NULL, new_file_size, PROT_READ | PROT_WRITE, MAP_ANON | MAP_PRIVATE, mmap_fd, 0); if (new_base == MAP_FAILED) - fatal ("Can't allocate buffer for %s\n", old_name); + fatal ("Can't allocate buffer for %s\n", old_name, 0); new_file_h = (ElfW(Ehdr) *) new_base; new_program_h = (ElfW(Phdr) *) ((byte *) new_base + old_file_h->e_phoff); @@ -930,11 +949,11 @@ unexec (new_name, old_name, data_start, bss_start, entry_address) memcpy (&NEW_SECTION_H (nn), &OLD_SECTION_H (n), old_file_h->e_shentsize); - + if (n == old_bss_index /* The new bss and sbss section's size is zero, and its file offset and virtual address should be off by NEW_DATA2_SIZE. */ - || n == old_sbss_index + || n == old_sbss_index || n == old_plt_index ) { /* NN should be `old_s?bss_index + 1' at this point. */ @@ -950,26 +969,18 @@ unexec (new_name, old_name, data_start, bss_start, entry_address) } else { - /* Any section that was original placed AFTER the bss - section should now be off by NEW_DATA2_SIZE. */ -#ifdef SOLARIS_POWERPC - /* On PPC Reference Platform running Solaris 2.5.1 - the plt section is also of type NOBI like the bss section. - (not really stored) and therefore sections after the bss - section start at the plt offset. The plt section is always - the one just before the bss section. - It would be better to put the new data section before - the .plt section, or use libelf instead. - Erik Deumens, deumens@qtp.ufl.edu. */ - if (NEW_SECTION_H (nn).sh_offset - >= OLD_SECTION_H (old_bss_index-1).sh_offset) + /* Any section that was originally placed after the .bss + section should now be off by NEW_DATA2_SIZE. If a + section overlaps the .bss section, consider it to be + placed after the .bss section. Overlap can occur if the + section just before .bss has less-strict alignment; this + was observed between .symtab and .bss on Solaris 2.5.1 + (sparc) with GCC snapshot 960602. */ + + if (NEW_SECTION_H (nn).sh_offset + NEW_SECTION_H (nn).sh_size + > new_data2_offset) NEW_SECTION_H (nn).sh_offset += new_data2_size; -#else - if (round_up (NEW_SECTION_H (nn).sh_offset, - OLD_SECTION_H (old_bss_index).sh_addralign) - >= new_data2_offset) - NEW_SECTION_H (nn).sh_offset += new_data2_size; -#endif + /* Any section that was originally placed after the section header table should now be off by the size of one section header table entry. */ @@ -987,11 +998,11 @@ unexec (new_name, old_name, data_start, bss_start, entry_address) if (NEW_SECTION_H (nn).sh_type != SHT_SYMTAB && NEW_SECTION_H (nn).sh_type != SHT_DYNSYM) PATCH_INDEX (NEW_SECTION_H (nn).sh_info); - + if (old_sbss_index != -1) if (!strcmp (old_section_names + NEW_SECTION_H (nn).sh_name, ".sbss")) { - NEW_SECTION_H (nn).sh_offset = + NEW_SECTION_H (nn).sh_offset = round_up (NEW_SECTION_H (nn).sh_offset, NEW_SECTION_H (nn).sh_addralign); NEW_SECTION_H (nn).sh_type = SHT_PROGBITS; @@ -1015,16 +1026,23 @@ unexec (new_name, old_name, data_start, bss_start, entry_address) /* The conditional bit below was in Oliva's original code (1999-08-25) and seems to have been dropped by mistake subsequently. It prevents a crash at startup under X in - `IRIX64 6.5 6.5.17m' with c_dev 7.3.1.3m. It causes no - trouble on the other ELF platforms I could test (Irix - 6.5.15m, Solaris 8, Debian Potato x86, Debian Woody - SPARC); however, it's reported to cause crashes under - some version of GNU/Linux. It's not yet clear what's - changed in that Irix version to cause the problem, or why - the fix sometimes fails under GNU/Linux. There's - probably no good reason to have something Irix-specific - here, but this will have to do for now. IRIX6_5 is the - most specific macro we have to test. -- fx 2002-10-01 */ + `IRIX64 6.5 6.5.17m', whether compiled on that relase or + an earlier one. It causes no trouble on the other ELF + platforms I could test (Irix 6.5.15m, Solaris 8, Debian + Potato x86, Debian Woody SPARC); however, it's reported + to cause crashes under some version of GNU/Linux. It's + not yet clear what's changed in that Irix version to + cause the problem, or why the fix sometimes fails under + GNU/Linux. There's probably no good reason to have + something Irix-specific here, but this will have to do + for now. IRIX6_5 is the most specific macro we have to + test. -- fx 2002-10-01 + + The issue _looks_ as though it's gone away on 6.5.18m, + but maybe it's still lurking, to be triggered by some + change in the binary. It appears to concern the dynamic + loader, but I never got anywhere with an SGI support call + seeking clues. -- fx 2002-11-29. */ #ifdef IRIX6_5 || !strcmp ((old_section_names + NEW_SECTION_H (n).sh_name), ".got") @@ -1063,12 +1081,12 @@ unexec (new_name, old_name, data_start, bss_start, entry_address) } #endif /* __alpha__ */ -#if defined (__sony_news) && defined (_SYSTYPE_SYSV) +#if defined (_SYSTYPE_SYSV) if (NEW_SECTION_H (nn).sh_type == SHT_MIPS_DEBUG - && old_mdebug_index != -1) + && old_mdebug_index != -1) { - int diff = NEW_SECTION_H(nn).sh_offset - - OLD_SECTION_H(old_mdebug_index).sh_offset; + int diff = NEW_SECTION_H(nn).sh_offset + - OLD_SECTION_H(old_mdebug_index).sh_offset; HDRR *phdr = (HDRR *)(NEW_SECTION_H (nn).sh_offset + new_base); if (diff) @@ -1086,10 +1104,10 @@ unexec (new_name, old_name, data_start, bss_start, entry_address) phdr->cbExtOffset += diff; } } -#endif /* __sony_news && _SYSTYPE_SYSV */ +#endif /* _SYSTYPE_SYSV */ #if __sgi - /* Adjust the HDRR offsets in .mdebug and copy the + /* Adjust the HDRR offsets in .mdebug and copy the line data if it's in its usual 'hole' in the object. Makes the new file debuggable with dbx. patches up two problems: the absolute file offsets @@ -1194,8 +1212,9 @@ unexec (new_name, old_name, data_start, bss_start, entry_address) /* Cause a compilation error if anyone uses n instead of nn below. */ struct {int a;} n; + (void)n.a; /* Prevent `unused variable' warnings. */ - switch (section.sh_type) + switch (section.sh_type) { default: break; @@ -1245,9 +1264,13 @@ unexec (new_name, old_name, data_start, bss_start, entry_address) /* Write out new_file, and free the buffers. */ if (write (new_file, new_base, new_file_size) != new_file_size) - fatal ("Didn't write %d bytes to %s: errno %d\n", +#ifndef emacs + fatal ("Didn't write %d bytes: errno %d\n", + new_file_size, errno); +#else + fatal ("Didn't write %d bytes to %s: errno %d\n", new_file_size, new_base, errno); - +#endif munmap (old_base, old_file_size); munmap (new_base, new_file_size); @@ -1272,3 +1295,6 @@ unexec (new_name, old_name, data_start, bss_start, entry_address) if (chmod (new_name, stat_buf.st_mode) == -1) fatal ("Can't chmod (%s): errno %d\n", new_name, errno); } + +/* arch-tag: e02e1512-95e2-4ef0-bba7-b6bce658f1e3 + (do not change this comment) */