On 7 January 2011 15:46, Schildbach, Wolfgang <ws...@dolby.com> wrote: > I usually compile a hello world (echoing its arguments) with rvds2.2 or > above:
> If you don't have an ARM compiler available, I could send you the > compiled binary to test. Peter, is there another way to generate > binaries using semihosting? You can also do this with a gcc compiled for arm-none-eabi (eg as found in the codesourcery "ARM EABI" toolchain: http://www.codesourcery.com/sgpp/lite/arm/portal/release1592 ): /opt/arm-2010.09/bin/arm-none-eabi-gcc -g -Wall -o hello hello.c -T generic-hosted.ld Or you can just test "by hand": #include <stdio.h> struct datablock { char *string; int buflen; }; char buf[20]; int main(int argc, char **argv) { int r, i; struct datablock datablock; printf("semihosting-cmd test: argc %d\n", argc); for (i = 0; i < argc; i++) { printf("argv[%d]: %s\n", i, argv[i]); } datablock.string = buf; datablock.buflen = sizeof(buf); { register int r0 asm ("r0") = 0x15; register void * r1 asm ("r1") = &datablock; register int result asm ("r0"); __asm__ __volatile__ ( "svc 0x123456" : "=r" (result) : "r" (r0), "r" (r1) : "cc", "memory"); r = result; } printf("semihosting returned status %d\n", r); if (r == 0) { printf("and string '%s'\n", datablock.string); } return 0; } -- PMM
