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([71.212.142.129]) by smtp.gmail.com with ESMTPSA id fz16-20020a17090b025000b001dbe11be891sm1692286pjb.44.2022.05.03.12.52.34 for (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Tue, 03 May 2022 12:52:34 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linaro.org; s=google; h=from:to:subject:date:message-id:in-reply-to:references:mime-version :content-transfer-encoding; bh=xbtQNW8iXZae/AjVjCxvg2NljuQAygSZg+TBTFVvaBA=; b=YXmWJFCaV34UUzF6BZ/J8pVp6DdqBDjAF0ciw4c4v3KSfomdSxtCfIQ9EmfJ5eM/rA XGnvVz3nPT3Js6FTKjJCI0ZBNZWTdRBHwx1XxhZW76bFEMZvHpWJRhdFgyZtBpI8t2o8 xOl09bNvZHdjwA6So70o506N12oNqYBw5jJzUWQGD+fpP13qOcg3SPiJ5hW2IwRyFESs 4IOTil2QhWBBtACw4FOBPlvq0ynZktI9ml/ftEc/GCj8mT5jLXMrI+05Kg9KA696ewYY x7GFBOHX7Bn/wlPNv++dugfkeaVqYcl1fKAHdw2KzcHz7N7rCLjSbJngmsBUllmOWMm0 hGJQ== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; h=x-gm-message-state:from:to:subject:date:message-id:in-reply-to :references:mime-version:content-transfer-encoding; bh=xbtQNW8iXZae/AjVjCxvg2NljuQAygSZg+TBTFVvaBA=; b=m9BfsxuyivnWhJ319CQJSYlyMhKBNE+0U7UMfWTdh7xkWT8gdBegcF1I0+/aKELi86 wOvAreDBQr5ZARaHUf37BJF/1TmXQtioxNHE21tFQ6RPgWsbAixTMiuoburPHLL9IuQn O1Z/dFXq3yHzi2wcRzkEadwUp5Lz9IqsB5nJLTLKufk+zMOSPtQg1D2GLQYcmEHFebzv feNaKzI4LoNdsdF69t9wHgoalSGub/YFk4IzUV4me9YAfPWMz/Efsu9kedbpWVkz4mcX gdj6gFOc6IYnTnTZmVEOrdPVN9uh/GpoEPlJLF7s/HYRw6wqQjO0kDuXZ5+nXrIO6pyE Djpw== X-Gm-Message-State: AOAM533xV650GSTbxjL96V4nSdDRJ72L75u8r9nLA7V63N+jaUVpo07W cyV5lm8mCN/b81C27pDqzd3n6JYafyyeXQ== X-Google-Smtp-Source: ABdhPJyV375RVjws47CpGAAJq7EeZpOV5fFxFXfLU2S1z76TDzH2ootkEam+5t3OOwxjSikE26ZlRQ== X-Received: by 2002:a17:90b:33ca:b0:1d7:d322:9aa2 with SMTP id lk10-20020a17090b33ca00b001d7d3229aa2mr6371019pjb.21.1651607555389; Tue, 03 May 2022 12:52:35 -0700 (PDT) From: Richard Henderson To: qemu-devel@nongnu.org Subject: [PATCH v2 50/74] target/m68k: Use semihosting/syscalls.h Date: Tue, 3 May 2022 12:48:19 -0700 Message-Id: <20220503194843.1379101-51-richard.henderson@linaro.org> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20220503194843.1379101-1-richard.henderson@linaro.org> References: <20220503194843.1379101-1-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::635; envelope-from=richard.henderson@linaro.org; helo=mail-pl1-x635.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_HELO_NONE=0.001, SPF_PASS=-0.001, T_SCC_BODY_TEXT_LINE=-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: 1651610984164100003 Content-Type: text/plain; charset="utf-8" This separates guest file descriptors from host file descriptors, and utilizes shared infrastructure for integration with gdbstub. Signed-off-by: Richard Henderson --- target/m68k/m68k-semi.c | 270 ++++++---------------------------------- 1 file changed, 39 insertions(+), 231 deletions(-) diff --git a/target/m68k/m68k-semi.c b/target/m68k/m68k-semi.c index 4b5621a101..d6b3b3226e 100644 --- a/target/m68k/m68k-semi.c +++ b/target/m68k/m68k-semi.c @@ -21,7 +21,7 @@ =20 #include "cpu.h" #include "exec/gdbstub.h" -#include "semihosting/guestfd.h" +#include "semihosting/syscalls.h" #include "semihosting/softmmu-uaccess.h" #include "hw/boards.h" #include "qemu/log.h" @@ -41,54 +41,6 @@ #define HOSTED_ISATTY 12 #define HOSTED_SYSTEM 13 =20 -static int translate_openflags(int flags) -{ - int hf; - - if (flags & GDB_O_WRONLY) - hf =3D O_WRONLY; - else if (flags & GDB_O_RDWR) - hf =3D O_RDWR; - else - hf =3D O_RDONLY; - - if (flags & GDB_O_APPEND) hf |=3D O_APPEND; - if (flags & GDB_O_CREAT) hf |=3D O_CREAT; - if (flags & GDB_O_TRUNC) hf |=3D O_TRUNC; - if (flags & GDB_O_EXCL) hf |=3D O_EXCL; - - return hf; -} - -static void translate_stat(CPUM68KState *env, target_ulong addr, struct st= at *s) -{ - struct gdb_stat *p; - - if (!(p =3D lock_user(VERIFY_WRITE, addr, sizeof(struct gdb_stat), 0))) - /* FIXME - should this return an error code? */ - return; - p->gdb_st_dev =3D cpu_to_be32(s->st_dev); - p->gdb_st_ino =3D cpu_to_be32(s->st_ino); - p->gdb_st_mode =3D cpu_to_be32(s->st_mode); - p->gdb_st_nlink =3D cpu_to_be32(s->st_nlink); - p->gdb_st_uid =3D cpu_to_be32(s->st_uid); - p->gdb_st_gid =3D cpu_to_be32(s->st_gid); - p->gdb_st_rdev =3D cpu_to_be32(s->st_rdev); - p->gdb_st_size =3D cpu_to_be64(s->st_size); -#ifdef _WIN32 - /* Windows stat is missing some fields. */ - p->gdb_st_blksize =3D 0; - p->gdb_st_blocks =3D 0; -#else - p->gdb_st_blksize =3D cpu_to_be64(s->st_blksize); - p->gdb_st_blocks =3D cpu_to_be64(s->st_blocks); -#endif - p->gdb_st_atime =3D cpu_to_be32(s->st_atime); - p->gdb_st_mtime =3D cpu_to_be32(s->st_mtime); - p->gdb_st_ctime =3D cpu_to_be32(s->st_ctime); - unlock_user(p, addr, sizeof(struct gdb_stat)); -} - static void m68k_semi_u32_cb(CPUState *cs, uint64_t ret, int err) { M68kCPU *cpu =3D M68K_CPU(cs); @@ -128,8 +80,6 @@ static void m68k_semi_u64_cb(CPUState *cs, uint64_t ret,= int err) */ #define GET_ARG(n) do { \ if (get_user_ual(arg ## n, args + (n) * 4)) { \ - result =3D -1; \ - errno =3D EFAULT; \ goto failed; \ } \ } while (0) @@ -139,237 +89,93 @@ void do_m68k_semihosting(CPUM68KState *env, int nr) CPUState *cs =3D env_cpu(env); uint32_t args; target_ulong arg0, arg1, arg2, arg3; - void *p; - void *q; - uint32_t len; - uint32_t result; =20 args =3D env->dregs[1]; switch (nr) { case HOSTED_EXIT: gdb_exit(env->dregs[0]); exit(env->dregs[0]); + case HOSTED_OPEN: GET_ARG(0); GET_ARG(1); GET_ARG(2); GET_ARG(3); - if (use_gdb_syscalls()) { - gdb_do_syscall(m68k_semi_u32_cb, "open,%s,%x,%x", arg0, (int)a= rg1, - arg2, arg3); - return; - } else { - p =3D lock_user_string(arg0); - if (!p) { - /* FIXME - check error code? */ - result =3D -1; - } else { - result =3D open(p, translate_openflags(arg2), arg3); - unlock_user(p, arg0, 0); - } - } + semihost_sys_open(cs, m68k_semi_u32_cb, arg0, arg1, arg2, arg3); break; + case HOSTED_CLOSE: - { - /* Ignore attempts to close stdin/out/err. */ - GET_ARG(0); - int fd =3D arg0; - if (fd > 2) { - if (use_gdb_syscalls()) { - gdb_do_syscall(m68k_semi_u32_cb, "close,%x", arg0); - return; - } else { - result =3D close(fd); - } - } else { - result =3D 0; - } - break; - } + GET_ARG(0); + semihost_sys_close(cs, m68k_semi_u32_cb, arg0); + break; + case HOSTED_READ: GET_ARG(0); GET_ARG(1); GET_ARG(2); - len =3D arg2; - if (use_gdb_syscalls()) { - gdb_do_syscall(m68k_semi_u32_cb, "read,%x,%x,%x", - arg0, arg1, len); - return; - } else { - p =3D lock_user(VERIFY_WRITE, arg1, len, 0); - if (!p) { - /* FIXME - check error code? */ - result =3D -1; - } else { - result =3D read(arg0, p, len); - unlock_user(p, arg1, len); - } - } + semihost_sys_read(cs, m68k_semi_u32_cb, arg0, arg1, arg2); break; + case HOSTED_WRITE: GET_ARG(0); GET_ARG(1); GET_ARG(2); - len =3D arg2; - if (use_gdb_syscalls()) { - gdb_do_syscall(m68k_semi_u32_cb, "write,%x,%x,%x", - arg0, arg1, len); - return; - } else { - p =3D lock_user(VERIFY_READ, arg1, len, 1); - if (!p) { - /* FIXME - check error code? */ - result =3D -1; - } else { - result =3D write(arg0, p, len); - unlock_user(p, arg0, 0); - } - } + semihost_sys_write(cs, m68k_semi_u32_cb, arg0, arg1, arg2); break; + case HOSTED_LSEEK: - { - uint64_t off; - GET_ARG(0); - GET_ARG(1); - GET_ARG(2); - GET_ARG(3); - off =3D (uint32_t)arg2 | ((uint64_t)arg1 << 32); - if (use_gdb_syscalls()) { - gdb_do_syscall(m68k_semi_u64_cb, "fseek,%x,%lx,%x", - arg0, off, arg3); - } else { - off =3D lseek(arg0, off, arg3); - m68k_semi_u64_cb(cs, off, errno); - } - return; - } + GET_ARG(0); + GET_ARG(1); + GET_ARG(2); + GET_ARG(3); + semihost_sys_lseek(cs, m68k_semi_u64_cb, arg0, + deposit64(arg2, arg1, 32, 32), arg3); + break; + case HOSTED_RENAME: GET_ARG(0); GET_ARG(1); GET_ARG(2); GET_ARG(3); - if (use_gdb_syscalls()) { - gdb_do_syscall(m68k_semi_u32_cb, "rename,%s,%s", - arg0, (int)arg1, arg2, (int)arg3); - return; - } else { - p =3D lock_user_string(arg0); - q =3D lock_user_string(arg2); - if (!p || !q) { - /* FIXME - check error code? */ - result =3D -1; - } else { - result =3D rename(p, q); - } - unlock_user(p, arg0, 0); - unlock_user(q, arg2, 0); - } + semihost_sys_rename(cs, m68k_semi_u32_cb, arg0, arg1, arg2, arg3); break; + case HOSTED_UNLINK: GET_ARG(0); GET_ARG(1); - if (use_gdb_syscalls()) { - gdb_do_syscall(m68k_semi_u32_cb, "unlink,%s", - arg0, (int)arg1); - return; - } else { - p =3D lock_user_string(arg0); - if (!p) { - /* FIXME - check error code? */ - result =3D -1; - } else { - result =3D unlink(p); - unlock_user(p, arg0, 0); - } - } + semihost_sys_remove(cs, m68k_semi_u32_cb, arg0, arg1); break; + case HOSTED_STAT: GET_ARG(0); GET_ARG(1); GET_ARG(2); - if (use_gdb_syscalls()) { - gdb_do_syscall(m68k_semi_u32_cb, "stat,%s,%x", - arg0, (int)arg1, arg2); - return; - } else { - struct stat s; - p =3D lock_user_string(arg0); - if (!p) { - /* FIXME - check error code? */ - result =3D -1; - } else { - result =3D stat(p, &s); - unlock_user(p, arg0, 0); - } - if (result =3D=3D 0) { - translate_stat(env, arg2, &s); - } - } + semihost_sys_stat(cs, m68k_semi_u32_cb, arg0, arg1, arg2); break; + case HOSTED_FSTAT: GET_ARG(0); GET_ARG(1); - if (use_gdb_syscalls()) { - gdb_do_syscall(m68k_semi_u32_cb, "fstat,%x,%x", - arg0, arg1); - return; - } else { - struct stat s; - result =3D fstat(arg0, &s); - if (result =3D=3D 0) { - translate_stat(env, arg1, &s); - } - } + semihost_sys_fstat(cs, m68k_semi_u32_cb, arg0, arg1); break; + case HOSTED_GETTIMEOFDAY: GET_ARG(0); GET_ARG(1); - if (use_gdb_syscalls()) { - gdb_do_syscall(m68k_semi_u32_cb, "gettimeofday,%x,%x", - arg0, arg1); - return; - } else { - struct gdb_timeval *p; - int64_t rt =3D g_get_real_time(); - p =3D lock_user(VERIFY_WRITE, arg0, sizeof(struct gdb_timeval)= , 0); - if (!p) { - /* FIXME - check error code? */ - result =3D -1; - } else { - result =3D 0; - p->tv_sec =3D cpu_to_be32(rt / G_USEC_PER_SEC); - p->tv_usec =3D cpu_to_be64(rt % G_USEC_PER_SEC); - unlock_user(p, arg0, sizeof(struct gdb_timeval)); - } - } + semihost_sys_gettimeofday(cs, m68k_semi_u32_cb, arg0, arg1); break; + case HOSTED_ISATTY: GET_ARG(0); - if (use_gdb_syscalls()) { - gdb_do_syscall(m68k_semi_u32_cb, "isatty,%x", arg0); - return; - } else { - result =3D isatty(arg0); - } + semihost_sys_isatty(cs, m68k_semi_u32_cb, arg0); break; + case HOSTED_SYSTEM: GET_ARG(0); GET_ARG(1); - if (use_gdb_syscalls()) { - gdb_do_syscall(m68k_semi_u32_cb, "system,%s", - arg0, (int)arg1); - return; - } else { - p =3D lock_user_string(arg0); - if (!p) { - /* FIXME - check error code? */ - result =3D -1; - } else { - result =3D system(p); - unlock_user(p, arg0, 0); - } - } + semihost_sys_system(cs, m68k_semi_u32_cb, arg0, arg1); break; + case HOSTED_INIT_SIM: /* * FIXME: This is wrong for boards where RAM does not start at @@ -378,10 +184,12 @@ void do_m68k_semihosting(CPUM68KState *env, int nr) env->dregs[1] =3D current_machine->ram_size; env->aregs[7] =3D current_machine->ram_size; return; + default: cpu_abort(env_cpu(env), "Unsupported semihosting syscall %d\n", nr= ); - result =3D 0; + + failed: + m68k_semi_u32_cb(cs, -1, EFAULT); + break; } -failed: - m68k_semi_u32_cb(cs, result, errno); } --=20 2.34.1