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Kernel/riscv64: Add RISC-V Syscall API

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This commit is contained in:
Sönke Holz 2023-10-22 14:03:12 +02:00 • committed by Andrew Kaster
parent 6824d2a788
commit fd8858ace2
1 changed files with 56 additions and 6 deletions
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62
Kernel/API/Syscall.h
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@ -544,16 +544,17 @@ struct SC_faccessat_params {
void initialize(); void initialize();
int sync(); int sync();
# if ARCH(X86_64) || ARCH(AARCH64) # if ARCH(X86_64) || ARCH(AARCH64) || ARCH(RISCV64)
inline uintptr_t invoke(Function function) inline uintptr_t invoke(Function function)
{ {
uintptr_t result;
# if ARCH(X86_64) # if ARCH(X86_64)
uintptr_t result;
asm volatile("syscall" asm volatile("syscall"
: "=a"(result) : "=a"(result)
: "a"(function) : "a"(function)
: "rcx", "r11", "memory"); : "rcx", "r11", "memory");
# elif ARCH(AARCH64) # elif ARCH(AARCH64)
uintptr_t result;
register uintptr_t x0 asm("x0"); register uintptr_t x0 asm("x0");
register uintptr_t x8 asm("x8") = function; register uintptr_t x8 asm("x8") = function;
asm volatile("svc #0" asm volatile("svc #0"
@ -561,6 +562,13 @@ inline uintptr_t invoke(Function function)
: "r"(x8) : "r"(x8)
: "memory"); : "memory");
result = x0; result = x0;
# elif ARCH(RISCV64)
register uintptr_t a7 asm("a7") = function;
register uintptr_t result asm("a0");
asm volatile("ecall"
: "=r"(result)
: "r"(a7)
: "memory");
# endif # endif
return result; return result;
} }
@ -568,13 +576,14 @@ inline uintptr_t invoke(Function function)
template<typename T1> template<typename T1>
inline uintptr_t invoke(Function function, T1 arg1) inline uintptr_t invoke(Function function, T1 arg1)
{ {
uintptr_t result;
# if ARCH(X86_64) # if ARCH(X86_64)
uintptr_t result;
asm volatile("syscall" asm volatile("syscall"
: "=a"(result) : "=a"(result)
: "a"(function), "d"((uintptr_t)arg1) : "a"(function), "d"((uintptr_t)arg1)
: "rcx", "r11", "memory"); : "rcx", "r11", "memory");
# elif ARCH(AARCH64) # elif ARCH(AARCH64)
uintptr_t result;
register uintptr_t x0 asm("x0"); register uintptr_t x0 asm("x0");
register uintptr_t x1 asm("x1") = arg1; register uintptr_t x1 asm("x1") = arg1;
register uintptr_t x8 asm("x8") = function; register uintptr_t x8 asm("x8") = function;
@ -583,6 +592,14 @@ inline uintptr_t invoke(Function function, T1 arg1)
: "r"(x1), "r"(x8) : "r"(x1), "r"(x8)
: "memory"); : "memory");
result = x0; result = x0;
# elif ARCH(RISCV64)
register uintptr_t a0 asm("a0") = arg1;
register uintptr_t a7 asm("a7") = function;
register uintptr_t result asm("a0");
asm volatile("ecall"
: "=r"(result)
: "0"(a0), "r"(a7)
: "memory");
# endif # endif
return result; return result;
} }
@ -590,13 +607,14 @@ inline uintptr_t invoke(Function function, T1 arg1)
template<typename T1, typename T2> template<typename T1, typename T2>
inline uintptr_t invoke(Function function, T1 arg1, T2 arg2) inline uintptr_t invoke(Function function, T1 arg1, T2 arg2)
{ {
uintptr_t result;
# if ARCH(X86_64) # if ARCH(X86_64)
uintptr_t result;
asm volatile("syscall" asm volatile("syscall"
: "=a"(result) : "=a"(result)
: "a"(function), "d"((uintptr_t)arg1), "D"((uintptr_t)arg2) : "a"(function), "d"((uintptr_t)arg1), "D"((uintptr_t)arg2)
: "rcx", "r11", "memory"); : "rcx", "r11", "memory");
# elif ARCH(AARCH64) # elif ARCH(AARCH64)
uintptr_t result;
register uintptr_t x0 asm("x0"); register uintptr_t x0 asm("x0");
register uintptr_t x1 asm("x1") = arg1; register uintptr_t x1 asm("x1") = arg1;
register uintptr_t x2 asm("x2") = arg2; register uintptr_t x2 asm("x2") = arg2;
@ -606,6 +624,15 @@ inline uintptr_t invoke(Function function, T1 arg1, T2 arg2)
: "r"(x1), "r"(x2), "r"(x8) : "r"(x1), "r"(x2), "r"(x8)
: "memory"); : "memory");
result = x0; result = x0;
# elif ARCH(RISCV64)
register uintptr_t a0 asm("a0") = arg1;
register uintptr_t a1 asm("a1") = arg2;
register uintptr_t a7 asm("a7") = function;
register uintptr_t result asm("a0");
asm volatile("ecall"
: "=r"(result)
: "0"(a0), "r"(a1), "r"(a7)
: "memory");
# endif # endif
return result; return result;
} }
@ -613,13 +640,14 @@ inline uintptr_t invoke(Function function, T1 arg1, T2 arg2)
template<typename T1, typename T2, typename T3> template<typename T1, typename T2, typename T3>
inline uintptr_t invoke(Function function, T1 arg1, T2 arg2, T3 arg3) inline uintptr_t invoke(Function function, T1 arg1, T2 arg2, T3 arg3)
{ {
uintptr_t result;
# if ARCH(X86_64) # if ARCH(X86_64)
uintptr_t result;
asm volatile("syscall" asm volatile("syscall"
: "=a"(result) : "=a"(result)
: "a"(function), "d"((uintptr_t)arg1), "D"((uintptr_t)arg2), "b"((uintptr_t)arg3) : "a"(function), "d"((uintptr_t)arg1), "D"((uintptr_t)arg2), "b"((uintptr_t)arg3)
: "rcx", "r11", "memory"); : "rcx", "r11", "memory");
# elif ARCH(AARCH64) # elif ARCH(AARCH64)
uintptr_t result;
register uintptr_t x0 asm("x0"); register uintptr_t x0 asm("x0");
register uintptr_t x1 asm("x1") = arg1; register uintptr_t x1 asm("x1") = arg1;
register uintptr_t x2 asm("x2") = arg2; register uintptr_t x2 asm("x2") = arg2;
@ -630,6 +658,16 @@ inline uintptr_t invoke(Function function, T1 arg1, T2 arg2, T3 arg3)
: "r"(x1), "r"(x2), "r"(x3), "r"(x8) : "r"(x1), "r"(x2), "r"(x3), "r"(x8)
: "memory"); : "memory");
result = x0; result = x0;
# elif ARCH(RISCV64)
register uintptr_t a0 asm("a0") = arg1;
register uintptr_t a1 asm("a1") = arg2;
register uintptr_t a2 asm("a2") = arg3;
register uintptr_t a7 asm("a7") = function;
register uintptr_t result asm("a0");
asm volatile("ecall"
: "=r"(result)
: "0"(a0), "r"(a1), "r"(a2), "r"(a7)
: "memory");
# endif # endif
return result; return result;
} }
@ -637,13 +675,14 @@ inline uintptr_t invoke(Function function, T1 arg1, T2 arg2, T3 arg3)
template<typename T1, typename T2, typename T3, typename T4> template<typename T1, typename T2, typename T3, typename T4>
inline uintptr_t invoke(Function function, T1 arg1, T2 arg2, T3 arg3, T4 arg4) inline uintptr_t invoke(Function function, T1 arg1, T2 arg2, T3 arg3, T4 arg4)
{ {
uintptr_t result;
# if ARCH(X86_64) # if ARCH(X86_64)
uintptr_t result;
asm volatile("syscall" asm volatile("syscall"
: "=a"(result) : "=a"(result)
: "a"(function), "d"((uintptr_t)arg1), "D"((uintptr_t)arg2), "b"((uintptr_t)arg3), "S"((uintptr_t)arg4) : "a"(function), "d"((uintptr_t)arg1), "D"((uintptr_t)arg2), "b"((uintptr_t)arg3), "S"((uintptr_t)arg4)
: "memory"); : "memory");
# elif ARCH(AARCH64) # elif ARCH(AARCH64)
uintptr_t result;
register uintptr_t x0 asm("x0"); register uintptr_t x0 asm("x0");
register uintptr_t x1 asm("x1") = arg1; register uintptr_t x1 asm("x1") = arg1;
register uintptr_t x2 asm("x2") = arg2; register uintptr_t x2 asm("x2") = arg2;
@ -655,6 +694,17 @@ inline uintptr_t invoke(Function function, T1 arg1, T2 arg2, T3 arg3, T4 arg4)
: "r"(x1), "r"(x2), "r"(x3), "r"(x4), "r"(x8) : "r"(x1), "r"(x2), "r"(x3), "r"(x4), "r"(x8)
: "memory"); : "memory");
result = x0; result = x0;
# elif ARCH(RISCV64)
register uintptr_t a0 asm("a0") = arg1;
register uintptr_t a1 asm("a1") = arg2;
register uintptr_t a2 asm("a2") = arg3;
register uintptr_t a3 asm("a3") = arg4;
register uintptr_t a7 asm("a7") = function;
register uintptr_t result asm("a0");
asm volatile("ecall"
: "=r"(result)
: "0"(a0), "r"(a1), "r"(a2), "r"(a3), "r"(a7)
: "memory");
# endif # endif
return result; return result;
} }