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([2602:ae:1547:e101:3cf2:c634:5b19:25f6]) by smtp.gmail.com with ESMTPSA id e19-20020a17090ae4d300b001e2fade86c1sm15112133pju.2.2022.06.07.15.26.19 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Tue, 07 Jun 2022 15:26:19 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linaro.org; s=google; h=from:to:cc:subject:date:message-id:in-reply-to:references :mime-version:content-transfer-encoding; bh=bOpw6kxmi87dpdkEkilkb5+DQd7aJjfziEI5ji+nxm4=; b=hyzrz15TYzUF17CeVLOonEZS2zzErQPIL2uYxRGmTETIlRNsAHKxpdgD9chnNAzjQr 9LktInSlaClMX1CmWSeGtk0cooyYVd6m4GoU6p9EQ2x5m/xk2SehCe3zGiWo0yOI6txj zz4VAEExk+GvtQCbbR/UmzLgEoDBF/jhV4tHXrbscLDjaZPc9axPvws4Unp0J9QE4585 NwPjSU9C0OIWHKhpzfXKOgr2DztlHEZvKcMV3rFmmREcIUtHLtQIpG7FehvEw8nTvhr3 ktkMTudLg9CvMtEh35LxOfuFUYCnqX+7GO3XlxfzTH+VQdkBN0w++n1MXUW+cyVCP08r t0Mg== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; h=x-gm-message-state:from:to:cc:subject:date:message-id:in-reply-to :references:mime-version:content-transfer-encoding; bh=bOpw6kxmi87dpdkEkilkb5+DQd7aJjfziEI5ji+nxm4=; b=kFSZjcDx9w3DtbS8g9PO5JH2Z2FqqSVeA8rDiFLEUduoTmwe9BRfGA3NfwxctQHRru b7k5bfnd2qp5nghl1zoxyJA2Wi4VVvM7jwJmJ5tj+IV4Au0CkeQQ7YHFKjsGpTti5QxH SkCzeo6mpJVOT2itoiFEqgmRbtrKNfrjYGBJjInNgCzhg495znvRY+q0ibY/IC+PAa/M qPPianFtxwpOjlokhBDJ8YM5svs97MUsTeTNrKgymt4YgMyhvXc2ePri6pYl9Xs/irg0 Gv0ZWcDgM5sTJ8Q+2J1cAaJZp8Bj1lSRqMMAwX7Q1gxkf+K523ReyiBhd5FwIuYDzeN3 7qFw== X-Gm-Message-State: AOAM530vwckwH2NHQYEc4Vfe1WbZn1m7FKEo0mrwOHQkOu+4JzaCNvnB m+j1w+gSaX7qWpR9mCjGAlRqhd7lBJ0cqQ== X-Google-Smtp-Source: ABdhPJxrwt54PEnIg1/YqESMnCUGZIJh/6tCWQ9K5CCYY2b+PUF08ZzlYwQXjz2Ls0y8gbH0HiHRiQ== X-Received: by 2002:a17:902:f64c:b0:156:7ceb:b579 with SMTP id m12-20020a170902f64c00b001567cebb579mr30456157plg.73.1654640779883; Tue, 07 Jun 2022 15:26:19 -0700 (PDT) From: Richard Henderson To: qemu-devel@nongnu.org Cc: laurent@vivier.eu Subject: [PATCH v4 2/3] target/m68k: Make semihosting system only Date: Tue, 7 Jun 2022 15:26:15 -0700 Message-Id: <20220607222616.717435-3-richard.henderson@linaro.org> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20220607222616.717435-1-richard.henderson@linaro.org> References: <20220607222616.717435-1-richard.henderson@linaro.org> MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable Received-SPF: pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) client-ip=209.51.188.17; envelope-from=qemu-devel-bounces+importer=patchew.org@nongnu.org; helo=lists.gnu.org; Received-SPF: pass client-ip=2607:f8b0:4864:20::62a; envelope-from=richard.henderson@linaro.org; helo=mail-pl1-x62a.google.com X-Spam_score_int: -20 X-Spam_score: -2.1 X-Spam_bar: -- X-Spam_report: (-2.1 / 5.0 requ) BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, RCVD_IN_DNSWL_NONE=-0.0001, SPF_PASS=-0.001, T_SCC_BODY_TEXT_LINE=-0.01, T_SPF_HELO_TEMPERROR=0.01 autolearn=ham autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: qemu-devel-bounces+importer=patchew.org@nongnu.org Sender: "Qemu-devel" X-ZohoMail-DKIM: pass (identity @linaro.org) X-ZM-MESSAGEID: 1654644500389100001 Content-Type: text/plain; charset="utf-8" While we had a call to do_m68k_semihosting in linux-user, it wasn't actually reachable. We don't include DISAS_INSN(halt) as an instruction unless system mode. Signed-off-by: Richard Henderson Reviewed-by: Laurent Vivier --- linux-user/m68k/cpu_loop.c | 5 ----- target/m68k/m68k-semi.c | 36 ------------------------------------ target/m68k/meson.build | 6 ++++-- 3 files changed, 4 insertions(+), 43 deletions(-) diff --git a/linux-user/m68k/cpu_loop.c b/linux-user/m68k/cpu_loop.c index 3d3033155f..caead1cb74 100644 --- a/linux-user/m68k/cpu_loop.c +++ b/linux-user/m68k/cpu_loop.c @@ -36,11 +36,6 @@ void cpu_loop(CPUM68KState *env) process_queued_cpu_work(cs); =20 switch(trapnr) { - case EXCP_HALT_INSN: - /* Semihosing syscall. */ - env->pc +=3D 4; - do_m68k_semihosting(env, env->dregs[0]); - break; case EXCP_ILLEGAL: case EXCP_LINEA: case EXCP_LINEF: diff --git a/target/m68k/m68k-semi.c b/target/m68k/m68k-semi.c index 37b409b0b9..d0697ddbd1 100644 --- a/target/m68k/m68k-semi.c +++ b/target/m68k/m68k-semi.c @@ -21,13 +21,8 @@ =20 #include "cpu.h" #include "exec/gdbstub.h" -#if defined(CONFIG_USER_ONLY) -#include "qemu.h" -#define SEMIHOSTING_HEAP_SIZE (128 * 1024 * 1024) -#else #include "semihosting/softmmu-uaccess.h" #include "hw/boards.h" -#endif #include "qemu/log.h" =20 #define HOSTED_EXIT 0 @@ -377,43 +372,12 @@ void do_m68k_semihosting(CPUM68KState *env, int nr) } break; case HOSTED_INIT_SIM: -#if defined(CONFIG_USER_ONLY) - { - CPUState *cs =3D env_cpu(env); - TaskState *ts =3D cs->opaque; - /* Allocate the heap using sbrk. */ - if (!ts->heap_limit) { - abi_ulong ret; - uint32_t size; - uint32_t base; - - base =3D do_brk(0); - size =3D SEMIHOSTING_HEAP_SIZE; - /* Try a big heap, and reduce the size if that fails. */ - for (;;) { - ret =3D do_brk(base + size); - if (ret >=3D (base + size)) { - break; - } - size >>=3D 1; - } - ts->heap_limit =3D base + size; - } - /* - * This call may happen before we have writable memory, so return - * values directly in registers. - */ - env->dregs[1] =3D ts->heap_limit; - env->aregs[7] =3D ts->stack_base; - } -#else /* * FIXME: This is wrong for boards where RAM does not start at * address zero. */ env->dregs[1] =3D current_machine->ram_size; env->aregs[7] =3D current_machine->ram_size; -#endif return; default: cpu_abort(env_cpu(env), "Unsupported semihosting syscall %d\n", nr= ); diff --git a/target/m68k/meson.build b/target/m68k/meson.build index 05cd9fbd1e..27d2d7ba87 100644 --- a/target/m68k/meson.build +++ b/target/m68k/meson.build @@ -4,14 +4,16 @@ m68k_ss.add(files( 'fpu_helper.c', 'gdbstub.c', 'helper.c', - 'm68k-semi.c', 'op_helper.c', 'softfloat.c', 'translate.c', )) =20 m68k_softmmu_ss =3D ss.source_set() -m68k_softmmu_ss.add(files('monitor.c')) +m68k_softmmu_ss.add(files( + 'm68k-semi.c', + 'monitor.c' +)) =20 target_arch +=3D {'m68k': m68k_ss} target_softmmu_arch +=3D {'m68k': m68k_softmmu_ss} --=20 2.34.1