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pseudo inst: Add new wake cpu instruction for sending a message to wake a cpu.

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It's instantaneous and so it's somewhat bogus, but it's a first step.
This commit is contained in:
Nathan Binkert 2009-01-24 07:27:22 -08:00
parent f0fb3ac060
commit 64ed39f61b
6 changed files with 17 additions and 0 deletions
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3
src/arch/alpha/isa/decoder.isa
View file

@ -815,6 +815,9 @@ decode OPCODE default Unknown::unknown() {
0x07: rpns({{ 0x07: rpns({{
R0 = PseudoInst::rpns(xc->tcBase()); R0 = PseudoInst::rpns(xc->tcBase());
}}, IsNonSpeculative, IsUnverifiable); }}, IsNonSpeculative, IsUnverifiable);
0x09: wakeCPU({{
PseudoInst::wakeCPU(xc->tcBase(), R16);
}}, IsNonSpeculative, IsUnverifiable);
0x10: deprecated_ivlb({{ 0x10: deprecated_ivlb({{
warn_once("Obsolete M5 ivlb instruction encountered.\n"); warn_once("Obsolete M5 ivlb instruction encountered.\n");
}}); }});

9
src/sim/pseudo_inst.cc
View file

@ -137,6 +137,15 @@ rpns(ThreadContext *tc)
return curTick / Clock::Int::ns; return curTick / Clock::Int::ns;
} }
void
wakeCPU(ThreadContext *tc, uint64_t cpuid)
{
System *sys = tc->getSystemPtr();
ThreadContext *other_tc = sys->threadContexts[cpuid];
if (other_tc->status() == ThreadContext::Suspended)
other_tc->activate();
}
void void
m5exit(ThreadContext *tc, Tick delay) m5exit(ThreadContext *tc, Tick delay)
{ {

1
src/sim/pseudo_inst.hh
View file

@ -55,6 +55,7 @@ void addsymbol(ThreadContext *tc, Addr addr, Addr symbolAddr);
#endif #endif
uint64_t rpns(ThreadContext *tc); uint64_t rpns(ThreadContext *tc);
void wakeCPU(ThreadContext *tc, uint64_t cpuid);
void m5exit(ThreadContext *tc, Tick delay); void m5exit(ThreadContext *tc, Tick delay);
void resetstats(ThreadContext *tc, Tick delay, Tick period); void resetstats(ThreadContext *tc, Tick delay, Tick period);
void dumpstats(ThreadContext *tc, Tick delay, Tick period); void dumpstats(ThreadContext *tc, Tick delay, Tick period);

1
util/m5/m5op.h
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@ -40,6 +40,7 @@ void quiesceNs(uint64_t ns);
void quiesceCycle(uint64_t cycles); void quiesceCycle(uint64_t cycles);
uint64_t quiesceTime(void); uint64_t quiesceTime(void);
uint64_t rpns(); uint64_t rpns();
void wakeCPU(uint64_t cpuid);
void m5_exit(uint64_t ns_delay); void m5_exit(uint64_t ns_delay);
uint64_t m5_initparam(void); uint64_t m5_initparam(void);

2
util/m5/m5op_alpha.S
View file

@ -60,6 +60,7 @@ func:
#define QUIESCECYC(r1) INST(m5_op, r1, 0, quiescecycle_func) #define QUIESCECYC(r1) INST(m5_op, r1, 0, quiescecycle_func)
#define QUIESCETIME INST(m5_op, 0, 0, quiescetime_func) #define QUIESCETIME INST(m5_op, 0, 0, quiescetime_func)
#define RPNS INST(m5_op, 0, 0, rpns_func) #define RPNS INST(m5_op, 0, 0, rpns_func)
#define WAKE_CPU(r1) INST(m5_op, r1, 0, wakecpu_func)
#define M5EXIT(reg) INST(m5_op, reg, 0, exit_func) #define M5EXIT(reg) INST(m5_op, reg, 0, exit_func)
#define INITPARAM(reg) INST(m5_op, reg, 0, initparam_func) #define INITPARAM(reg) INST(m5_op, reg, 0, initparam_func)
#define LOADSYMBOL(reg) INST(m5_op, reg, 0, loadsymbol_func) #define LOADSYMBOL(reg) INST(m5_op, reg, 0, loadsymbol_func)
@ -81,6 +82,7 @@ SIMPLE_OP(quiesceNs, QUIESCENS(16))
SIMPLE_OP(quiesceCycle, QUIESCECYC(16)) SIMPLE_OP(quiesceCycle, QUIESCECYC(16))
SIMPLE_OP(quiesceTime, QUIESCETIME) SIMPLE_OP(quiesceTime, QUIESCETIME)
SIMPLE_OP(rpns, RPNS) SIMPLE_OP(rpns, RPNS)
SIMPLE_OP(wakeCPU, WAKE_CPU(16))
SIMPLE_OP(m5_exit, M5EXIT(16)) SIMPLE_OP(m5_exit, M5EXIT(16))
SIMPLE_OP(m5_initparam, INITPARAM(0)) SIMPLE_OP(m5_initparam, INITPARAM(0))
SIMPLE_OP(m5_loadsymbol, LOADSYMBOL(0)) SIMPLE_OP(m5_loadsymbol, LOADSYMBOL(0))

1
util/m5/m5ops.h
View file

@ -35,6 +35,7 @@
#define quiescecycle_func 0x03 #define quiescecycle_func 0x03
#define quiescetime_func 0x04 #define quiescetime_func 0x04
#define rpns_func 0x07 #define rpns_func 0x07
#define wakecpu_func 0x09
#define deprecated1_func 0x10 // obsolete ivlb #define deprecated1_func 0x10 // obsolete ivlb
#define deprecated2_func 0x11 // obsolete ivle #define deprecated2_func 0x11 // obsolete ivle
#define deprecated3_func 0x20 // deprecated exit function #define deprecated3_func 0x20 // deprecated exit function