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cgo: support errno value as second return parameter

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Making this work on all targets was interesting but there's now a test
in place to make sure this works on all targets that have the CGo test
enabled (which is almost all targets).
This commit is contained in:
Ayke van Laethem
2024-11-06 14:57:56 +01:00
committed by Ayke
parent 548fba82e6
commit 6593cf22fa
23 changed files with 263 additions and 16 deletions
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src/runtime/os_darwin.go
+6 -6
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@@ -151,7 +151,7 @@ func syscall_rawSyscall(fn, a1, a2, a3 uintptr) (r1, r2, err uintptr) {
r1 = uintptr(result)
if result == -1 {
// Syscall returns -1 on failure.
err = uintptr(*libc___error())
err = uintptr(*libc_errno_location())
}
return
}
@@ -161,7 +161,7 @@ func syscall_syscallX(fn, a1, a2, a3 uintptr) (r1, r2, err uintptr) {
r1 = call_syscallX(fn, a1, a2, a3)
if int64(r1) == -1 {
// Syscall returns -1 on failure.
err = uintptr(*libc___error())
err = uintptr(*libc_errno_location())
}
return
}
@@ -171,7 +171,7 @@ func syscall_syscallPtr(fn, a1, a2, a3 uintptr) (r1, r2, err uintptr) {
r1 = call_syscallX(fn, a1, a2, a3)
if r1 == 0 {
// Syscall returns a pointer on success, or NULL on failure.
err = uintptr(*libc___error())
err = uintptr(*libc_errno_location())
}
return
}
@@ -182,7 +182,7 @@ func syscall_syscall6(fn, a1, a2, a3, a4, a5, a6 uintptr) (r1, r2, err uintptr)
r1 = uintptr(result)
if result == -1 {
// Syscall returns -1 on failure.
err = uintptr(*libc___error())
err = uintptr(*libc_errno_location())
}
return
}
@@ -192,7 +192,7 @@ func syscall_syscall6X(fn, a1, a2, a3, a4, a5, a6 uintptr) (r1, r2, err uintptr)
r1 = call_syscall6X(fn, a1, a2, a3, a4, a5, a6)
if int64(r1) == -1 {
// Syscall returns -1 on failure.
err = uintptr(*libc___error())
err = uintptr(*libc_errno_location())
}
return
}
@@ -216,7 +216,7 @@ func libc_getpagesize() int32
// }
//
//export __error
func libc___error() *int32
func libc_errno_location() *int32
//export tinygo_syscall
func call_syscall(fn, a1, a2, a3 uintptr) int32