This fixes two problems with atomic operations on sh4, including an attempt at supporting the user-space atomics technique used by most sh-linux-user binaries.
Changes since v1: * Rebase on Aurelien's recent sh4 patchset. * Patch 3,5 split out of patch 6. * Patch 4 fixes the sh4-softmmu problem that Aurelien reported. * Handle more cases of atomic_fetch_op seen in debian images. * More cleanups for register banking. * Fix for 64-bit fp memory operations. * Tidy illegal instruction checks. * Implement fpchg (missing from sh4a) * Implement fsrra (had a nop implementation) * Use tcg_gen_lookup_and_goto_ptr for simple branches. Tested with debian unstable bash and our sh-test-0.2. I do *not* see the crashes that glaubitz reported. If they're still there I'll need a more complete report. Full tree is again at git://github.com/rth7680/qemu.git tgt-sh4 r~ Richard Henderson (27): target/sh4: Use cmpxchg for movco target/sh4: Consolidate end-of-TB tests target/sh4: Introduce TB_FLAG_ENVFLAGS_MASK target/sh4: Keep env->flags clean target/sh4: Adjust TB_FLAG_PENDING_MOVCA target/sh4: Handle user-space atomics target/sh4: Recognize common gUSA sequences linux-user/sh4: Notice gUSA regions during signal delivery linux-user/sh4: Clean env->flags on signal boundaries target/sh4: Hoist register bank selection target/sh4: Unify cpu_fregs into FREG target/sh4: Pass DisasContext to fpr64 routines target/sh4: Hoist fp register bank selection target/sh4: Eliminate unused XREG macro target/sh4: Merge DREG into fpr64 routines target/sh4: Load/store Dr as 64-bit quantities target/sh4: Simplify 64-bit fp reg-reg move target/sh4: Unify code for CHECK_NOT_DELAY_SLOT target/sh4: Unify code for CHECK_PRIVILEGED target/sh4: Unify code for CHECK_FPU_ENABLED target/sh4: Tidy misc illegal insn checks target/sh4: Introduce CHECK_FPSCR_PR_* target/sh4: Introduce CHECK_SH4A target/sh4: Implement fpchg target/sh4: Add missing FPSCR.PR == 0 checks target/sh4: Implement fsrra target/sh4: Use tcg_gen_lookup_and_goto_ptr target/sh4/cpu.h | 27 +- target/sh4/helper.h | 2 + linux-user/signal.c | 26 ++ target/sh4/cpu.c | 2 +- target/sh4/op_helper.c | 22 ++ target/sh4/translate.c | 946 ++++++++++++++++++++++++++++++++++++------------- 6 files changed, 775 insertions(+), 250 deletions(-) -- 2.9.4
