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Added mmap start and end so detailed CPU can know if an access is

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in a mmaped region

--HG--
extra : convert_revision : e4ee0520c84d94a0d2e804d02035228766abe71f
This commit is contained in:
Ali Saidi 2005-02-23 11:45:25 -05:00
parent 2298e2ba48
commit 9ebeb9b2de
3 changed files with 7 additions and 5 deletions
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2
sim/process.cc
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@ -282,7 +282,7 @@ LiveProcess::LiveProcess(const string &name, ObjectFile *objFile,
// Set up region for mmaps. Tru64 seems to start just above 0 and
// grow up from there.
mmap_base = 0x10000;
mmap_start = mmap_end = 0x10000;
// Set pointer for next thread stack. Reserve 8M for main stack.
next_thread_stack_base = stack_base - (8 * 1024 * 1024);

6
sim/process.hh
View file

@ -93,7 +93,8 @@ class Process : public SimObject
Addr next_thread_stack_base;
// Base of region for mmaps (when user doesn't specify an address).
Addr mmap_base;
Addr mmap_start;
Addr mmap_end;
std::string prog_fname; // file name
Addr prog_entry; // entry point (initial PC)
@ -156,7 +157,8 @@ class Process : public SimObject
{
return ((data_base <= addr && addr < brk_point) ||
((stack_base - 16*1024*1024) <= addr && addr < stack_base) ||
(text_base <= addr && addr < (text_base + text_size)));
(text_base <= addr && addr < (text_base + text_size)) ||
(mmap_start <= addr && addr < mmap_end));
}
virtual void syscall(ExecContext *xc) = 0;

4
sim/syscall_emul.hh
View file

@ -410,8 +410,8 @@ mmapFunc(SyscallDesc *desc, int num, Process *p, ExecContext *xc)
if (start == 0) {
// user didn't give an address... pick one from our "mmap region"
start = p->mmap_base;
p->mmap_base += RoundUp<Addr>(length, VMPageSize);
start = p->mmap_end;
p->mmap_end += RoundUp<Addr>(length, VMPageSize);
}
if (!(flags & OS::TGT_MAP_ANONYMOUS)) {