On Thu, Dec 17, 2020 at 05:10:24PM +0100, Philippe Mathieu-Daudé wrote: > On 12/17/20 11:40 AM, Laurent Vivier wrote: > > Le 19/11/2020 à 17:17, Philippe Mathieu-Daudé a écrit : > >> o32 ABI syscalls start at offset 4000. > >> > >> Signed-off-by: Philippe Mathieu-Daudé <[email protected]> > >> --- > >> linux-user/mips64/syscall_nr.h | 5 ++++- > >> 1 file changed, 4 insertions(+), 1 deletion(-) > >> > >> diff --git a/linux-user/mips64/syscall_nr.h > >> b/linux-user/mips64/syscall_nr.h > >> index 672f2fa51cb..6579421fa63 100644 > >> --- a/linux-user/mips64/syscall_nr.h > >> +++ b/linux-user/mips64/syscall_nr.h > >> @@ -1,4 +1,7 @@ > >> -#ifdef TARGET_ABI_MIPSN32 > >> +#if defined(TARGET_ABI_MIPSO32) > >> +#define TARGET_SYSCALL_OFFSET 4000 > > > > The value of the offset is hardcoded in linux-user/mips/meson.build, so > > either you remove > > TARGET_SYSCALL_OFFSET here or you update meson.build to use it. > > I don't understand what this Meson rule does, as this > doesn't work without this patch... > > You can download PS2 64-bit O32 binaries from 2002 (before > the official MIPS TLS ABI) there: > https://sourceforge.net/projects/kernelloader/files/
These look rather like 128 bits, as there are R5900 MMIs. For instance, one can find LQ, SQ, PEXTLB, PEXTLW and so on in /lib/ld.so in ps2linux_live_v5_pal_netsurf_usb.7z. There may be other surprises. R5900 Linux 2.x kernels are not IEEE 754 compatible, as opposed to both 5.x kernels and QEMU, for instance. I would suggest compiling tests with a recent GCC. Fredrik
