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Allocate new thread stacks and shared mem region via Process page table

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for Tru64 thread library emulation.

--HG--
extra : convert_revision : dbd307536e260e24ef79130d2aa88d84e33f03d4
This commit is contained in:
Steve Reinhardt 2006-10-08 04:29:40 -04:00
parent abc27ae691
commit c2f954ac69
1 changed files with 24 additions and 15 deletions
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39
src/kern/tru64/tru64.hh
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@ -588,16 +588,26 @@ class Tru64 : public OperatingSystem
argp.copyIn(tc->getMemPort());
int stack_size =
gtoh(argp->rsize) + gtoh(argp->ysize) + gtoh(argp->gsize);
// if the user chose an address, just let them have it. Otherwise
// pick one for them.
if (htog(argp->address) == 0) {
argp->address = htog(process->next_thread_stack_base);
int stack_size = (htog(argp->rsize) + htog(argp->ysize) +
htog(argp->gsize));
Addr stack_base = gtoh(argp->address);
if (stack_base == 0) {
stack_base = process->next_thread_stack_base;
process->next_thread_stack_base -= stack_size;
argp.copyOut(tc->getMemPort());
}
stack_base = roundDown(stack_base, VMPageSize);
// map memory
process->pTable->allocate(stack_base, roundUp(stack_size, VMPageSize));
argp->address = gtoh(stack_base);
argp.copyOut(tc->getMemPort());
return 0;
}
@ -633,7 +643,7 @@ class Tru64 : public OperatingSystem
abort();
}
const Addr base_addr = 0x12000; // was 0x3f0000000LL;
Addr base_addr = 0x12000; // was 0x3f0000000LL;
Addr cur_addr = base_addr; // next addresses to use
// first comes the config_info struct
Addr config_addr = cur_addr;
@ -659,8 +669,6 @@ class Tru64 : public OperatingSystem
config->nxm_slot_state = htog(slot_state_addr);
config->nxm_rad[0] = htog(rad_state_addr);
config.copyOut(tc->getMemPort());
// initialize the slot_state array and copy it out
TypedBufferArg<Tru64::nxm_slot_state_t> slot_state(slot_state_addr,
slot_state_size);
@ -672,8 +680,6 @@ class Tru64 : public OperatingSystem
(i == 0) ? Tru64::NXM_SLOT_BOUND : Tru64::NXM_SLOT_AVAIL;
}
slot_state.copyOut(tc->getMemPort());
// same for the per-RAD "shared" struct. Note that we need to
// allocate extra bytes for the per-VP array which is embedded at
// the end.
@ -706,17 +712,20 @@ class Tru64 : public OperatingSystem
}
}
rad_state.copyOut(tc->getMemPort());
//
// copy pointer to shared config area out to user
//
*configptr_ptr = htog(config_addr);
configptr_ptr.copyOut(tc->getMemPort());
// Register this as a valid address range with the process
process->nxm_start = base_addr;
process->nxm_end = cur_addr;
base_addr = roundDown(base_addr, VMPageSize);
int size = cur_addr - base_addr;
process->pTable->allocate(base_addr, roundUp(size, VMPageSize));
config.copyOut(tc->getMemPort());
slot_state.copyOut(tc->getMemPort());
rad_state.copyOut(tc->getMemPort());
configptr_ptr.copyOut(tc->getMemPort());
return 0;
}