v1: https://lore.kernel.org/qemu-devel/20230524054647.1093758-1-richard.hender...@linaro.org/
But v1 isn't particularly complet or korrect. Disconnect fpstate from sigframe, just like the kernel does. Return the separate portions of the frame from get_sigframe. Alter all of the target fpu routines to access memory that has already been translated and sized. r~ Richard Henderson (28): target/i386: Add tcg/access.[ch] target/i386: Convert do_fldt, do_fstt to X86Access target/i386: Convert helper_{fbld,fbst}_ST0 to X86Access target/i386: Convert do_fldenv to X86Access target/i386: Convert do_fstenv to X86Access target/i386: Convert do_fsave, do_frstor to X86Access target/i386: Convert do_xsave_{fpu,mxcr,sse} to X86Access target/i386: Convert do_xrstor_{fpu,mxcr,sse} to X86Access tagret/i386: Convert do_fxsave, do_fxrstor to X86Access target/i386: Convert do_xsave_* to X86Access target/i386: Convert do_xrstor_* to X86Access target/i386: Split out do_xsave_chk target/i386: Add rbfm argument to cpu_x86_{xsave,xrstor} target/i386: Add {hw,sw}_reserved to X86LegacyXSaveArea linux-user/i386: Drop xfeatures_size from sigcontext arithmetic linux-user/i386: Remove xfeatures from target_fpstate_fxsave linux-user/i386: Replace target_fpstate_fxsave with X86LegacyXSaveArea linux-user/i386: Split out struct target_fregs_state linux-user/i386: Fix -mregparm=3 for signal delivery linux-user/i386: Return boolean success from restore_sigcontext linux-user/i386: Return boolean success from xrstor_sigcontext linux-user/i386: Fix allocation and alignment of fp state target/i386: Honor xfeatures in xrstor_sigcontext target/i386: Convert do_xsave to X86Access target/i386: Convert do_xrstor to X86Access target/i386: Pass host pointer and size to cpu_x86_{fsave,frstor} target/i386: Pass host pointer and size to cpu_x86_{fxsave,fxrstor} target/i386: Pass host pointer and size to cpu_x86_{xsave,xrstor} target/i386/cpu.h | 57 ++- target/i386/tcg/access.h | 40 ++ linux-user/i386/signal.c | 669 ++++++++++++++++++------------- target/i386/tcg/access.c | 160 ++++++++ target/i386/tcg/fpu_helper.c | 561 ++++++++++++++++---------- tests/tcg/x86_64/test-1648.c | 33 ++ target/i386/tcg/meson.build | 1 + tests/tcg/x86_64/Makefile.target | 1 + 8 files changed, 1014 insertions(+), 508 deletions(-) create mode 100644 target/i386/tcg/access.h create mode 100644 target/i386/tcg/access.c create mode 100644 tests/tcg/x86_64/test-1648.c -- 2.34.1