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Add a basic IPC setup with Channel Object.

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Pass a process a channel endpoint on startup that it will use to
get it's initial capabilities.
This commit is contained in:
Drew Galbraith 2023-06-07 08:24:10 -07:00
parent b79ec07636
commit 81b925eea0
15 changed files with 341 additions and 20 deletions
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13
lib/mammoth/src/process.cpp
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@ -83,10 +83,16 @@ uint64_t LoadElfProgram(uint64_t base, uint64_t as_cap) {
} // namespace
uint64_t SpawnProcessFromElfRegion(uint64_t program) {
dbgln("Channel Create");
uint64_t local_chan;
uint64_t foreign_chan;
check(ZChannelCreate(&local_chan, &foreign_chan));
dbgln("Spawn");
uint64_t proc_cap;
uint64_t as_cap;
check(ZProcessSpawn(Z_INIT_PROC_SELF, &proc_cap, &as_cap));
check(ZProcessSpawn(Z_INIT_PROC_SELF, foreign_chan, &proc_cap, &as_cap,
&foreign_chan));
uint64_t entry_point = LoadElfProgram(program, as_cap);
dbgln("Thread Create");
@ -94,7 +100,10 @@ uint64_t SpawnProcessFromElfRegion(uint64_t program) {
check(ZThreadCreate(proc_cap, &thread_cap));
dbgln("Thread start");
check(ZThreadStart(thread_cap, entry_point, 0, 0));
check(ZThreadStart(thread_cap, entry_point, foreign_chan, 0));
const uint8_t* msg = reinterpret_cast<const uint8_t*>("Hello!");
check(ZChannelSend(local_chan, 0, 7, msg, 0, 0));
return Z_OK;
}