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[zion] POC for defining syscalls using macros

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This commit is contained in:
Drew Galbraith 2023-06-20 13:43:12 -07:00
parent 4fef54084f
commit 5fc7296b20
5 changed files with 36 additions and 32 deletions
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30
zion/include/zcall.h
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@ -4,7 +4,33 @@
#include "ztypes.h"
void ZProcessExit(uint64_t code);
#define SYS1(name, num, t1, a1) \
struct Z##name##Req { \
t1 a1; \
}; \
[[nodiscard]] inline z_err_t Z##name(t1 a1) { \
Z##name##Req req{ \
.a1 = a1, \
}; \
return SysCall1(num, &req); \
}
#define SYS2(name, num, t1, a1, t2, a2) \
struct Z##name##Req { \
t1 a1; \
t2 a2; \
}; \
[[nodiscard]] inline z_err_t Z##name(t1 a1, t2 a2) { \
Z##name##Req req{ \
.a1 = a1, \
.a2 = a2, \
}; \
return SysCall1(num, &req); \
}
z_err_t SysCall1(uint64_t code, const void* req);
SYS1(ProcessExit, Z_PROCESS_EXIT, uint64_t, code);
[[nodiscard]] z_err_t ZProcessSpawn(z_cap_t proc_cap, z_cap_t bootstrap_cap,
z_cap_t* new_proc_cap,
@ -16,7 +42,7 @@ void ZProcessExit(uint64_t code);
uint64_t entry, uint64_t arg1,
uint64_t arg2);
[[nodiscard]] z_err_t ZThreadCreate(z_cap_t proc_cap, z_cap_t* thread_cap);
SYS2(ThreadCreate, Z_THREAD_CREATE, z_cap_t, proc_cap, z_cap_t*, thread_cap);
[[nodiscard]] z_err_t ZThreadStart(z_cap_t thread_cap, uint64_t entry,
uint64_t arg1, uint64_t arg2);