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Program loader now sets the correct program segment type.

This commit is contained in:
Jonas 'Sortie' Termansen 2011-12-16 15:33:12 +01:00
parent acf1eebc98
commit 7cd28f097c
3 changed files with 30 additions and 6 deletions
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23
sortix/elf.cpp
View File

@ -36,6 +36,25 @@ namespace Sortix
{
namespace ELF
{
int ToProgramSectionType(int flags)
{
switch ( flags & (PF_X | PF_R | PF_W) )
{
case 0:
return SEG_NONE;
case PF_X:
case PF_X | PF_R:
case PF_X | PF_W:
case PF_X | PF_R | PF_W:
return SEG_TEXT;
case PF_R:
case PF_W:
case PF_R | PF_W:
default:
return SEG_DATA;
}
}
addr_t Construct32(Process* process, const void* file, size_t filelen)
{
if ( filelen < sizeof(Header32) ) { return 0; }
@ -83,7 +102,7 @@ namespace Sortix
if ( segment == NULL ) { return 0; }
segment->position = mapto;
segment->size = Page::AlignUp(mapbytes);
segment->type = SEG_DATA; // TODO: BUG
segment->type = ToProgramSectionType(pht->flags);
if ( segment->Intersects(process->segments) )
{
@ -163,7 +182,7 @@ namespace Sortix
if ( segment == NULL ) { return 0; }
segment->position = mapto;
segment->size = Page::AlignUp(mapbytes);
segment->type = SEG_DATA; // TODO: BUG
segment->type = ToProgramSectionType(pht->flags);
if ( segment->Intersects(process->segments) )
{

4
sortix/elf.h
View File

@ -162,6 +162,10 @@ namespace Sortix
const uint32_t PT_LOPROC = 0x70000000;
const uint32_t PT_HIPROC = 0x7FFFFFFF;
const uint32_t PF_X = (1<<0);
const uint32_t PF_W = (1<<1);
const uint32_t PF_R = (1<<2);
// Reads the elf file into the current address space and returns the
// entry address of the program, or 0 upon failure.
addr_t Construct(Process* process, const void* file, size_t filelen);

9
sortix/process.h
View File

@ -34,10 +34,11 @@ namespace Sortix
struct ProcessSegment;
const size_t DEFAULT_STACK_SIZE = 64*1024;
const int SEG_TEXT = 0;
const int SEG_DATA = 1;
const int SEG_STACK = 2;
const int SEG_OTHER = 3;
const int SEG_NONE = 0;
const int SEG_TEXT = 1;
const int SEG_DATA = 2;
const int SEG_STACK = 3;
const int SEG_OTHER = 4;
struct ProcessSegment
{