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exclude interpreter's segment from data region

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When an interpreter is located on the lower address (e.g. 0x0),
the text region is included in data region.
A fix to avoid this.
This commit is contained in:
NAKAMURA Gou
2013-10-21 18:55:02 +09:00
parent 6e736f6248
commit d557ba84d6
4 changed files with 10 additions and 3 deletions
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3
executer/include/uprotocol.h
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@@ -25,7 +25,8 @@ struct program_image_section {
unsigned long remote_pa;
unsigned long filesz, offset;
int prot;
int padding;
unsigned char interp;
unsigned char padding[3];
void *fp;
};

2
executer/user/mcexec.c
View File

@@ -145,6 +145,7 @@ struct program_load_desc *load_elf(FILE *fp, char **interp_pathp)
desc->sections[j].filesz = phdr.p_filesz;
desc->sections[j].offset = phdr.p_offset;
desc->sections[j].len = phdr.p_memsz;
desc->sections[j].interp = 0;
desc->sections[j].fp = fp;
desc->sections[j].prot = PROT_NONE;
@@ -255,6 +256,7 @@ struct program_load_desc *load_interp(struct program_load_desc *desc0, FILE *fp)
desc->sections[j].filesz = phdr.p_filesz;
desc->sections[j].offset = phdr.p_offset;
desc->sections[j].len = phdr.p_memsz;
desc->sections[j].interp = 1;
desc->sections[j].fp = fp;
desc->sections[j].prot = PROT_NONE;