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| author | Ali Saidi <saidi@eecs.umich.edu> | 2005-02-23 11:45:25 -0500 |
|---|---|---|
| committer | Ali Saidi <saidi@eecs.umich.edu> | 2005-02-23 11:45:25 -0500 |
| commit | 9ebeb9b2de34673fffce06baf1420f85993ba806 (patch) | |
| tree | 00803bde8781393696f513c2f940a2d3b2ae8f43 /sim | |
| parent | 2298e2ba481d6cdba020a405bd878fe4f554b658 (diff) | |
| download | gem5-9ebeb9b2de34673fffce06baf1420f85993ba806.tar.xz | |
Added mmap start and end so detailed CPU can know if an access is
in a mmaped region
--HG--
extra : convert_revision : e4ee0520c84d94a0d2e804d02035228766abe71f
Diffstat (limited to 'sim')
| -rw-r--r-- | sim/process.cc | 2 | ||||
| -rw-r--r-- | sim/process.hh | 6 | ||||
| -rw-r--r-- | sim/syscall_emul.hh | 4 |
3 files changed, 7 insertions, 5 deletions
diff --git a/sim/process.cc b/sim/process.cc index c725d3b1c..f09452c42 100644 --- a/sim/process.cc +++ b/sim/process.cc @@ -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); diff --git a/sim/process.hh b/sim/process.hh index bb4829875..6c7bc4222 100644 --- a/sim/process.hh +++ b/sim/process.hh @@ -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; diff --git a/sim/syscall_emul.hh b/sim/syscall_emul.hh index 768bc3700..831708a21 100644 --- a/sim/syscall_emul.hh +++ b/sim/syscall_emul.hh @@ -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)) { |