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| author | Ayke van Laethem <[email protected]> | 2020-01-15 15:59:51 +0100 |
|---|---|---|
| committer | Ron Evans <[email protected]> | 2020-03-22 17:14:59 +0100 |
| commit | f316ebc23b025e497931cfe420ec143f1a217b57 (patch) | |
| tree | 62099034937787559599a42a6adbd820417df7b3 /testdata | |
| parent | 9ec426e25e6738be6e09e0239445d1ca558cbf57 (diff) | |
| download | tinygo-f316ebc23b025e497931cfe420ec143f1a217b57.tar.gz tinygo-f316ebc23b025e497931cfe420ec143f1a217b57.zip | |
all: include picolibc for bare metal targets
This is necessary for better CGo support on bare metal. Existing
libraries expect to be able to include parts of libc and expect to be
able to link to those symbols.
Because with this all targets have a working libc, it is now possible to
add tests to check that a libc in fact works basically.
Not all parts of picolibc are included, such as the math or stdio parts.
These should be added later, when needed.
This commit also avoids the need for the custom memcpy/memset/memcmp
symbols that are sometimes emitted by LLVM. The C library will take care
of that.
Diffstat (limited to 'testdata')
| -rw-r--r-- | testdata/cgo/main.go | 7 | ||||
| -rw-r--r-- | testdata/cgo/out.txt | 1 |
2 files changed, 8 insertions, 0 deletions
diff --git a/testdata/cgo/main.go b/testdata/cgo/main.go index 41bc6892c..557dea5cf 100644 --- a/testdata/cgo/main.go +++ b/testdata/cgo/main.go @@ -4,6 +4,7 @@ package main int fortytwo(void); #include "main.h" int mul(int, int); +#include <string.h> */ import "C" @@ -109,6 +110,12 @@ func main() { var _ C.option3_t = C.option3A println("option 2A:", C.option2A) println("option 3A:", C.option3A) + + // libc: test whether C functions work at all. + buf1 := []byte("foobar\x00") + buf2 := make([]byte, len(buf1)) + C.strcpy((*C.char)(unsafe.Pointer(&buf2[0])), (*C.char)(unsafe.Pointer(&buf1[0]))) + println("copied string:", string(buf2[:C.strlen((*C.char)(unsafe.Pointer(&buf2[0])))])) } func printUnion(union C.joined_t) C.joined_t { diff --git a/testdata/cgo/out.txt b/testdata/cgo/out.txt index 73cb2b990..fcb688467 100644 --- a/testdata/cgo/out.txt +++ b/testdata/cgo/out.txt @@ -55,3 +55,4 @@ option F: 11 option G: 12 option 2A: 20 option 3A: 21 +copied string: foobar |