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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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71
zion/usr/zcall.cpp
View file

@ -4,18 +4,6 @@
#include "usr/zcall_internal.h"
uint64_t SysCall0(uint64_t number) {
uint64_t return_code;
asm("syscall" : "=a"(return_code) : "D"(number));
return return_code;
}
uint64_t SysCall1(uint64_t number, const void* first) {
uint64_t return_code;
asm("syscall" : "=a"(return_code) : "D"(number), "S"(first) : "rcx", "r11");
return return_code;
}
uint64_t SysCall2(uint64_t number, const void* first, const void* second) {
uint64_t return_code;
asm("syscall"
@ -25,19 +13,28 @@ uint64_t SysCall2(uint64_t number, const void* first, const void* second) {
return return_code;
}
uint64_t SysCall0(uint64_t number) { return SysCall2(number, 0, 0); }
uint64_t SysCall1(uint64_t number, const void* first) {
return SysCall2(number, first, 0);
}
void ZProcessExit(uint64_t code) {
SysCall1(Z_PROCESS_EXIT, reinterpret_cast<void*>(code));
}
uint64_t ZProcessSpawn(uint64_t proc_cap, uint64_t* new_proc_cap,
uint64_t* new_vmas_cap) {
uint64_t ZProcessSpawn(uint64_t proc_cap, uint64_t bootstrap_cap,
uint64_t* new_proc_cap, uint64_t* new_vmas_cap,
uint64_t* new_bootstrap_cap) {
ZProcessSpawnReq req{
.proc_cap = proc_cap,
.bootstrap_cap = bootstrap_cap,
};
ZProcessSpawnResp resp;
uint64_t ret = SysCall2(Z_PROCESS_SPAWN, &req, &resp);
*new_proc_cap = resp.proc_cap;
*new_vmas_cap = resp.vmas_cap;
*new_bootstrap_cap = resp.bootstrap_cap;
return ret;
}
@ -86,6 +83,52 @@ uint64_t ZMemoryObjectCreate(uint64_t size, uint64_t* vmmo_cap) {
return ret;
}
uint64_t ZChannelCreate(uint64_t* channel1, uint64_t* channel2) {
ZChannelCreateResp resp;
uint64_t ret = SysCall2(Z_CHANNEL_CREATE, 0, &resp);
*channel1 = resp.chan_cap1;
*channel2 = resp.chan_cap2;
return ret;
}
uint64_t ZChannelSend(uint64_t chan_cap, uint64_t type, uint64_t num_bytes,
const uint8_t* bytes, uint64_t num_caps,
const uint64_t* caps) {
ZChannelSendReq req{
.chan_cap = chan_cap,
.message =
{
.type = type,
.num_bytes = num_bytes,
.bytes = const_cast<uint8_t*>(bytes),
.num_caps = num_caps,
.caps = const_cast<uint64_t*>(caps),
},
};
return SysCall1(Z_CHANNEL_SEND, &req);
}
uint64_t ZChannelRecv(uint64_t chan_cap, uint64_t num_bytes, uint8_t* bytes,
uint64_t num_caps, uint64_t* caps, uint64_t* type,
uint64_t* actual_bytes, uint64_t* actual_caps) {
ZChannelRecvReq req{
.chan_cap = chan_cap,
.message =
{
.type = 0,
.num_bytes = num_bytes,
.bytes = bytes,
.num_caps = num_caps,
.caps = caps,
},
};
uint64_t ret = SysCall1(Z_CHANNEL_RECV, &req);
*type = req.message.type;
*actual_bytes = req.message.num_bytes;
*actual_caps = req.message.num_caps;
return ret;
}
uint64_t ZDebug(const char* message) {
return SysCall1(Z_DEBUG_PRINT, message);
}