add syscall emulation page table fault so we can allocate more stack pages

src/cpu/simple/base.cc:
    add syscall emulation page table fault so we can allocate more stack pages
    FaultBase::invoke will do this, we don't need to do it here
src/sim/faults.hh:
    I have no idea why this #if was there... gone
src/sim/process.cc:
    make stack_min actually be the current minimum

--HG--
extra : convert_revision : 9786b39f2747b94654a5d77c74243cd20503add4

1 files changed, 2 insertions, 3 deletions

diff --git a/src/sim/process.cc b/src/sim/process.cc
index 5080c3ac1..9cdc5b9f5 100644
--- a/src/sim/process.cc
+++ b/src/sim/process.cc
@@ -326,11 +326,10 @@ LiveProcess::argsInit(int intSize, int pageSize)
     // set bottom of stack
     stack_min = stack_base - space_needed;
     // align it
-    stack_min &= ~(intSize-1);
+    stack_min = roundDown(stack_min, pageSize);
     stack_size = stack_base - stack_min;
     // map memory
-    pTable->allocate(roundDown(stack_min, pageSize),
-                     roundUp(stack_size, pageSize));
+    pTable->allocate(stack_min, roundUp(stack_size, pageSize));
 
     // map out initial stack contents
     Addr argv_array_base = stack_min + intSize; // room for argc