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preliminary file redirection support for IAR #58

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Merged
VladimirUmek merged 3 commits into from
Jun 19, 2025
Merged

preliminary file redirection support for IAR #58

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792d62b
preliminary file redirection support for IAR
RobinKastberg Aug 21, 2024
417ebbf
fix compilation issues
RobinKastberg Aug 22, 2024
96b1a30
remove errno handling
RobinKastberg Aug 22, 2024
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108 changes: 101 additions & 7 deletions source/iar/retarget_io.c
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Original file line number Diff line number Diff line change
Expand Up @@ -16,10 +16,16 @@
* limitations under the License.
*/

#include <LowLevelIOInterface.h>
#include <stdio.h>

#include "RTE_Components.h"

#define RTE_CMSIS_Compiler_File_Interface
#ifdef RTE_CMSIS_Compiler_File_Interface
#include "retarget_fs.h"
#endif

#ifdef RTE_CMSIS_Compiler_STDERR
#include "retarget_stderr.h"
#endif
Expand All @@ -32,12 +38,12 @@
#include "retarget_stdout.h"
#endif

#if defined(RTE_CMSIS_Compiler_STDIN)
#if defined(RTE_CMSIS_Compiler_STDIN) || defined(RTE_CMSIS_Compiler_File_Interface)

size_t __read(int handle, unsigned char *buf, size_t bufSize)
{
#if defined(RTE_CMSIS_Compiler_STDIN)
if (handle == 0)
if (handle == _LLIO_STDIN)
{
size_t nChars = 0;
for (size_t i = bufSize; i > 0; --i)
Expand All @@ -53,12 +59,21 @@ size_t __read(int handle, unsigned char *buf, size_t bufSize)
}
#endif

return -1;
#if defined(RTE_CMSIS_Compiler_File_Interface)
int32_t sz = rt_fs_read(handle, buf, bufSize);
if (sz < 0) {
sz = -1;
}
return (sz);
#else
/* Not implemented */
return _LLIO_ERROR;
#endif
}

#endif

#if defined(RTE_CMSIS_Compiler_STDOUT) || defined(RTE_CMSIS_Compiler_STDERR)
#if defined(RTE_CMSIS_Compiler_STDOUT) || defined(RTE_CMSIS_Compiler_STDERR) || defined(RTE_CMSIS_Compiler_File_Interface)

size_t __write(int handle, const unsigned char *buf, size_t bufSize)
{
Expand All @@ -69,7 +84,7 @@ size_t __write(int handle, const unsigned char *buf, size_t bufSize)
}

#if defined(RTE_CMSIS_Compiler_STDOUT)
if (handle == 1 /* stdout */) {
if (handle == _LLIO_STDOUT) {
for (size_t i = bufSize; i > 0; --i)
{
stdout_putchar(*buf++);
Expand All @@ -79,7 +94,7 @@ size_t __write(int handle, const unsigned char *buf, size_t bufSize)
#endif

#if defined(RTE_CMSIS_Compiler_STDERR)
if (handle == 2 /* stderr */) {
if (handle == _LLIO_STDERR) {
for (size_t i = bufSize; i > 0; --i)
{
stderr_putchar(*buf);
Expand All @@ -88,7 +103,86 @@ size_t __write(int handle, const unsigned char *buf, size_t bufSize)
return bufSize;
}
#endif
return -1;


#if defined(RTE_CMSIS_Compiler_File_Interface)
int32_t sz = rt_fs_write(handle, buf, bufSize);
if (sz < 0) {
sz = -1;
}
return (sz);
#else
/* Not implemented */
return _LLIO_ERROR;
#endif
}

#endif


int __close(int fildes)
{
switch (fildes) {
case _LLIO_STDIN:
case _LLIO_STDOUT:
case _LLIO_STDERR:
return (0);
}

#if defined(RTE_CMSIS_Compiler_File_Interface)
int32_t rval;
rval = rt_fs_close(fildes);
if (rval < 0) {
rval = _LLIO_ERROR;
}
return (rval);
#else
/* Not implemented */
return _LLIO_ERROR;
#endif
}


int __open(const char *path, int oflag)
{
#if defined(RTE_CMSIS_Compiler_File_Interface)
int32_t rval;
int32_t mode;
mode = oflag & (_LLIO_RDONLY | _LLIO_WRONLY | _LLIO_RDWR | _LLIO_APPEND);
mode |= (oflag & (_LLIO_CREAT | _LLIO_TRUNC)) >> 1;
rval = rt_fs_open(path, mode);
if (rval < 0) {
rval = _LLIO_ERROR;
}
return (rval);
#else
/* Not implemented */
(void)path;
(void)oflag;
return _LLIO_ERROR;
#endif
}

long __lseek(int fildes, long offset, int whence)
{
#if defined(RTE_CMSIS_Compiler_File_Interface)
int64_t rval;
rval = rt_fs_seek(fildes, offset, whence);
if (rval < 0) {
rval = _LLIO_ERROR;
}
else {
if ((sizeof(long) != sizeof(int64_t)) && ((rval >> 32) != 0)) {
/* Returned file offset does not fit into off_t */
rval = _LLIO_ERROR;
}
}
return ((long)rval);
#else
/* Not implemented */
(void)offset;
(void)whence;
return _LLIO_ERROR;
#endif
}