The Inter-Thread Communication unit (TYPE_MIPS_ITU) is an optional
device that is only selected by a few machines. However it goes
deep into the translation code, as the MTC0/MTHC0 SAAR helpers
call itc_reconfigure().
When building with no machine selecting the ITU component (which
is implemented in hw/misc/mips_itu.c), we get the following link
failure:
/usr/bin/ld: target_mips_cp0_helper.c.o: in function `helper_mtc0_saar':
target/mips/cp0_helper.c:1118: undefined reference to `itc_reconfigure'
/usr/bin/ld: target_mips_cp0_helper.c.o: in function `helper_mthc0_saar':
target/mips/cp0_helper.c:1135: undefined reference to `itc_reconfigure'
Fix by adding a stub, built when the ITU isn't selected.
Signed-off-by: Philippe Mathieu-Daudé<f4bug@amsat.org>
---
RFC because too much Meson machinery to my taste.
But how to deal with such architectural devices else?
To reproduce:
$ echo CONFIG_JAZZ=y > default-configs/devices/mips64el-softmmu.mak
$ echo CONFIG_SEMIHOSTING=y >> default-configs/devices/mips64el-softmmu.mak
$ configure --without-default-devices
$ ninja qemu-system-mips64el
$ ./qemu-system-mips64el -M magnum -S
---
target/mips/cp0_itu-stub.c | 15 +++++++++++++++
target/mips/meson.build | 3 +++
2 files changed, 18 insertions(+)
create mode 100644 target/mips/cp0_itu-stub.c