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Mon, 22 Sep 2025 02:37:15 -0700 (PDT) From: =?UTF-8?q?Alex=20Benn=C3=A9e?= To: qemu-devel@nongnu.org Cc: Palmer Dabbelt , Alexandre Iooss , Mahmoud Mandour , qemu-riscv@nongnu.org, Daniel Henrique Barboza , Thomas Huth , Peter Maydell , =?UTF-8?q?Alex=20Benn=C3=A9e?= , Alistair Francis , qemu-arm@nongnu.org, =?UTF-8?q?Philippe=20Mathieu-Daud=C3=A9?= , Weiwei Li , Pierrick Bouvier , Liu Zhiwei , Richard Henderson Subject: [PATCH 04/25] semihosting/syscalls: compile once in system and per target for user mode Date: Mon, 22 Sep 2025 10:36:49 +0100 Message-ID: <20250922093711.2768983-5-alex.bennee@linaro.org> X-Mailer: git-send-email 2.47.3 In-Reply-To: <20250922093711.2768983-1-alex.bennee@linaro.org> References: <20250922093711.2768983-1-alex.bennee@linaro.org> MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" 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=2a00:1450:4864:20::433; envelope-from=alex.bennee@linaro.org; helo=mail-wr1-x433.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 autolearn=unavailable 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-bounces+importer=patchew.org@nongnu.org X-ZohoMail-DKIM: pass (identity @linaro.org) X-ZM-MESSAGEID: 1758533967295116600 From: Pierrick Bouvier We replace target_ulong mechanically by uint64_t. We can't compile (easily) this code once for user, as it relies on various target/function types, so leave it in specific_ss for user mode. Reviewed-by: Richard Henderson Signed-off-by: Pierrick Bouvier Message-ID: <20250822150058.18692-2-pierrick.bouvier@linaro.org> Signed-off-by: Alex Benn=C3=A9e --- include/semihosting/syscalls.h | 30 ++++++------ semihosting/arm-compat-semi.c | 1 + semihosting/syscalls.c | 89 +++++++++++++++++----------------- semihosting/meson.build | 4 +- 4 files changed, 63 insertions(+), 61 deletions(-) diff --git a/include/semihosting/syscalls.h b/include/semihosting/syscalls.h index 6627c45fb28..03aa45b7bb9 100644 --- a/include/semihosting/syscalls.h +++ b/include/semihosting/syscalls.h @@ -9,7 +9,7 @@ #ifndef SEMIHOSTING_SYSCALLS_H #define SEMIHOSTING_SYSCALLS_H =20 -#include "exec/cpu-defs.h" +#include "exec/vaddr.h" #include "gdbstub/syscalls.h" =20 /* @@ -24,23 +24,23 @@ typedef struct GuestFD GuestFD; =20 void semihost_sys_open(CPUState *cs, gdb_syscall_complete_cb complete, - target_ulong fname, target_ulong fname_len, + vaddr fname, uint64_t fname_len, int gdb_flags, int mode); =20 void semihost_sys_close(CPUState *cs, gdb_syscall_complete_cb complete, int fd); =20 void semihost_sys_read(CPUState *cs, gdb_syscall_complete_cb complete, - int fd, target_ulong buf, target_ulong len); + int fd, vaddr buf, uint64_t len); =20 void semihost_sys_read_gf(CPUState *cs, gdb_syscall_complete_cb complete, - GuestFD *gf, target_ulong buf, target_ulong len); + GuestFD *gf, vaddr buf, uint64_t len); =20 void semihost_sys_write(CPUState *cs, gdb_syscall_complete_cb complete, - int fd, target_ulong buf, target_ulong len); + int fd, vaddr buf, uint64_t len); =20 void semihost_sys_write_gf(CPUState *cs, gdb_syscall_complete_cb complete, - GuestFD *gf, target_ulong buf, target_ulong len= ); + GuestFD *gf, vaddr buf, uint64_t len); =20 void semihost_sys_lseek(CPUState *cs, gdb_syscall_complete_cb complete, int fd, int64_t off, int gdb_whence); @@ -50,27 +50,27 @@ void semihost_sys_isatty(CPUState *cs, gdb_syscall_comp= lete_cb complete, =20 void semihost_sys_flen(CPUState *cs, gdb_syscall_complete_cb fstat_cb, gdb_syscall_complete_cb flen_cb, - int fd, target_ulong fstat_addr); + int fd, vaddr fstat_addr); =20 void semihost_sys_fstat(CPUState *cs, gdb_syscall_complete_cb complete, - int fd, target_ulong addr); + int fd, vaddr addr); =20 void semihost_sys_stat(CPUState *cs, gdb_syscall_complete_cb complete, - target_ulong fname, target_ulong fname_len, - target_ulong addr); + vaddr fname, uint64_t fname_len, + vaddr addr); =20 void semihost_sys_remove(CPUState *cs, gdb_syscall_complete_cb complete, - target_ulong fname, target_ulong fname_len); + vaddr fname, uint64_t fname_len); =20 void semihost_sys_rename(CPUState *cs, gdb_syscall_complete_cb complete, - target_ulong oname, target_ulong oname_len, - target_ulong nname, target_ulong nname_len); + vaddr oname, uint64_t oname_len, + vaddr nname, uint64_t nname_len); =20 void semihost_sys_system(CPUState *cs, gdb_syscall_complete_cb complete, - target_ulong cmd, target_ulong cmd_len); + vaddr cmd, uint64_t cmd_len); =20 void semihost_sys_gettimeofday(CPUState *cs, gdb_syscall_complete_cb compl= ete, - target_ulong tv_addr, target_ulong tz_addr); + vaddr tv_addr, vaddr tz_addr); =20 void semihost_sys_poll_one(CPUState *cs, gdb_syscall_complete_cb complete, int fd, GIOCondition cond, int timeout); diff --git a/semihosting/arm-compat-semi.c b/semihosting/arm-compat-semi.c index bcd13cd6dfd..64ddc749bf8 100644 --- a/semihosting/arm-compat-semi.c +++ b/semihosting/arm-compat-semi.c @@ -34,6 +34,7 @@ #include "qemu/osdep.h" #include "qemu/timer.h" #include "exec/gdbstub.h" +#include "cpu.h" #include "gdbstub/syscalls.h" #include "semihosting/semihost.h" #include "semihosting/console.h" diff --git a/semihosting/syscalls.c b/semihosting/syscalls.c index f6451d9bb0e..f072d919193 100644 --- a/semihosting/syscalls.c +++ b/semihosting/syscalls.c @@ -8,7 +8,6 @@ =20 #include "qemu/osdep.h" #include "qemu/log.h" -#include "cpu.h" #include "gdbstub/syscalls.h" #include "semihosting/guestfd.h" #include "semihosting/syscalls.h" @@ -23,7 +22,7 @@ /* * Validate or compute the length of the string (including terminator). */ -static int validate_strlen(CPUState *cs, target_ulong str, target_ulong tl= en) +static int validate_strlen(CPUState *cs, uint64_t str, uint64_t tlen) { CPUArchState *env G_GNUC_UNUSED =3D cpu_env(cs); char c; @@ -52,7 +51,7 @@ static int validate_strlen(CPUState *cs, target_ulong str= , target_ulong tlen) } =20 static int validate_lock_user_string(char **pstr, CPUState *cs, - target_ulong tstr, target_ulong tlen) + uint64_t tstr, uint64_t tlen) { int ret =3D validate_strlen(cs, tstr, tlen); CPUArchState *env G_GNUC_UNUSED =3D cpu_env(cs); @@ -72,7 +71,7 @@ static int validate_lock_user_string(char **pstr, CPUStat= e *cs, * big-endian. Until we do something with gdb, also produce the * same big-endian result from the host. */ -static int copy_stat_to_user(CPUState *cs, target_ulong addr, +static int copy_stat_to_user(CPUState *cs, uint64_t addr, const struct stat *s) { CPUArchState *env G_GNUC_UNUSED =3D cpu_env(cs); @@ -129,7 +128,7 @@ static void gdb_open_cb(CPUState *cs, uint64_t ret, int= err) } =20 static void gdb_open(CPUState *cs, gdb_syscall_complete_cb complete, - target_ulong fname, target_ulong fname_len, + uint64_t fname, uint64_t fname_len, int gdb_flags, int mode) { int len =3D validate_strlen(cs, fname, fname_len); @@ -151,14 +150,14 @@ static void gdb_close(CPUState *cs, gdb_syscall_compl= ete_cb complete, } =20 static void gdb_read(CPUState *cs, gdb_syscall_complete_cb complete, - GuestFD *gf, target_ulong buf, target_ulong len) + GuestFD *gf, uint64_t buf, uint64_t len) { gdb_do_syscall(complete, "read,%x,%lx,%lx", (uint32_t)gf->hostfd, (uint64_t)buf, (uint64_t)len); } =20 static void gdb_write(CPUState *cs, gdb_syscall_complete_cb complete, - GuestFD *gf, target_ulong buf, target_ulong len) + GuestFD *gf, uint64_t buf, uint64_t len) { gdb_do_syscall(complete, "write,%x,%lx,%lx", (uint32_t)gf->hostfd, (uint64_t)buf, (uint64_t)len); @@ -178,15 +177,15 @@ static void gdb_isatty(CPUState *cs, gdb_syscall_comp= lete_cb complete, } =20 static void gdb_fstat(CPUState *cs, gdb_syscall_complete_cb complete, - GuestFD *gf, target_ulong addr) + GuestFD *gf, uint64_t addr) { gdb_do_syscall(complete, "fstat,%x,%lx", (uint32_t)gf->hostfd, (uint64_t)addr); } =20 static void gdb_stat(CPUState *cs, gdb_syscall_complete_cb complete, - target_ulong fname, target_ulong fname_len, - target_ulong addr) + uint64_t fname, uint64_t fname_len, + uint64_t addr) { int len =3D validate_strlen(cs, fname, fname_len); if (len < 0) { @@ -199,7 +198,7 @@ static void gdb_stat(CPUState *cs, gdb_syscall_complete= _cb complete, } =20 static void gdb_remove(CPUState *cs, gdb_syscall_complete_cb complete, - target_ulong fname, target_ulong fname_len) + uint64_t fname, uint64_t fname_len) { int len =3D validate_strlen(cs, fname, fname_len); if (len < 0) { @@ -211,8 +210,8 @@ static void gdb_remove(CPUState *cs, gdb_syscall_comple= te_cb complete, } =20 static void gdb_rename(CPUState *cs, gdb_syscall_complete_cb complete, - target_ulong oname, target_ulong oname_len, - target_ulong nname, target_ulong nname_len) + uint64_t oname, uint64_t oname_len, + uint64_t nname, uint64_t nname_len) { int olen, nlen; =20 @@ -233,7 +232,7 @@ static void gdb_rename(CPUState *cs, gdb_syscall_comple= te_cb complete, } =20 static void gdb_system(CPUState *cs, gdb_syscall_complete_cb complete, - target_ulong cmd, target_ulong cmd_len) + uint64_t cmd, uint64_t cmd_len) { int len =3D validate_strlen(cs, cmd, cmd_len); if (len < 0) { @@ -245,7 +244,7 @@ static void gdb_system(CPUState *cs, gdb_syscall_comple= te_cb complete, } =20 static void gdb_gettimeofday(CPUState *cs, gdb_syscall_complete_cb complet= e, - target_ulong tv_addr, target_ulong tz_addr) + uint64_t tv_addr, uint64_t tz_addr) { gdb_do_syscall(complete, "gettimeofday,%lx,%lx", (uint64_t)tv_addr, (uint64_t)tz_addr); @@ -256,7 +255,7 @@ static void gdb_gettimeofday(CPUState *cs, gdb_syscall_= complete_cb complete, */ =20 static void host_open(CPUState *cs, gdb_syscall_complete_cb complete, - target_ulong fname, target_ulong fname_len, + uint64_t fname, uint64_t fname_len, int gdb_flags, int mode) { CPUArchState *env G_GNUC_UNUSED =3D cpu_env(cs); @@ -316,7 +315,7 @@ static void host_close(CPUState *cs, gdb_syscall_comple= te_cb complete, } =20 static void host_read(CPUState *cs, gdb_syscall_complete_cb complete, - GuestFD *gf, target_ulong buf, target_ulong len) + GuestFD *gf, uint64_t buf, uint64_t len) { CPUArchState *env G_GNUC_UNUSED =3D cpu_env(cs); void *ptr =3D lock_user(VERIFY_WRITE, buf, len, 0); @@ -337,7 +336,7 @@ static void host_read(CPUState *cs, gdb_syscall_complet= e_cb complete, } =20 static void host_write(CPUState *cs, gdb_syscall_complete_cb complete, - GuestFD *gf, target_ulong buf, target_ulong len) + GuestFD *gf, uint64_t buf, uint64_t len) { CPUArchState *env G_GNUC_UNUSED =3D cpu_env(cs); void *ptr =3D lock_user(VERIFY_READ, buf, len, 1); @@ -395,7 +394,7 @@ static void host_flen(CPUState *cs, gdb_syscall_complet= e_cb complete, } =20 static void host_fstat(CPUState *cs, gdb_syscall_complete_cb complete, - GuestFD *gf, target_ulong addr) + GuestFD *gf, uint64_t addr) { struct stat buf; int ret; @@ -410,8 +409,8 @@ static void host_fstat(CPUState *cs, gdb_syscall_comple= te_cb complete, } =20 static void host_stat(CPUState *cs, gdb_syscall_complete_cb complete, - target_ulong fname, target_ulong fname_len, - target_ulong addr) + uint64_t fname, uint64_t fname_len, + uint64_t addr) { CPUArchState *env G_GNUC_UNUSED =3D cpu_env(cs); struct stat buf; @@ -440,7 +439,7 @@ static void host_stat(CPUState *cs, gdb_syscall_complet= e_cb complete, } =20 static void host_remove(CPUState *cs, gdb_syscall_complete_cb complete, - target_ulong fname, target_ulong fname_len) + uint64_t fname, uint64_t fname_len) { CPUArchState *env G_GNUC_UNUSED =3D cpu_env(cs); char *p; @@ -458,8 +457,8 @@ static void host_remove(CPUState *cs, gdb_syscall_compl= ete_cb complete, } =20 static void host_rename(CPUState *cs, gdb_syscall_complete_cb complete, - target_ulong oname, target_ulong oname_len, - target_ulong nname, target_ulong nname_len) + uint64_t oname, uint64_t oname_len, + uint64_t nname, uint64_t nname_len) { CPUArchState *env G_GNUC_UNUSED =3D cpu_env(cs); char *ostr, *nstr; @@ -484,7 +483,7 @@ static void host_rename(CPUState *cs, gdb_syscall_compl= ete_cb complete, } =20 static void host_system(CPUState *cs, gdb_syscall_complete_cb complete, - target_ulong cmd, target_ulong cmd_len) + uint64_t cmd, uint64_t cmd_len) { CPUArchState *env G_GNUC_UNUSED =3D cpu_env(cs); char *p; @@ -502,7 +501,7 @@ static void host_system(CPUState *cs, gdb_syscall_compl= ete_cb complete, } =20 static void host_gettimeofday(CPUState *cs, gdb_syscall_complete_cb comple= te, - target_ulong tv_addr, target_ulong tz_addr) + uint64_t tv_addr, uint64_t tz_addr) { CPUArchState *env G_GNUC_UNUSED =3D cpu_env(cs); struct gdb_timeval *p; @@ -547,10 +546,10 @@ static void host_poll_one(CPUState *cs, gdb_syscall_c= omplete_cb complete, */ =20 static void staticfile_read(CPUState *cs, gdb_syscall_complete_cb complete, - GuestFD *gf, target_ulong buf, target_ulong le= n) + GuestFD *gf, uint64_t buf, uint64_t len) { CPUArchState *env G_GNUC_UNUSED =3D cpu_env(cs); - target_ulong rest =3D gf->staticfile.len - gf->staticfile.off; + uint64_t rest =3D gf->staticfile.len - gf->staticfile.off; void *ptr; =20 if (len > rest) { @@ -605,7 +604,7 @@ static void staticfile_flen(CPUState *cs, gdb_syscall_c= omplete_cb complete, */ =20 static void console_read(CPUState *cs, gdb_syscall_complete_cb complete, - GuestFD *gf, target_ulong buf, target_ulong len) + GuestFD *gf, uint64_t buf, uint64_t len) { CPUArchState *env G_GNUC_UNUSED =3D cpu_env(cs); char *ptr; @@ -622,7 +621,7 @@ static void console_read(CPUState *cs, gdb_syscall_comp= lete_cb complete, } =20 static void console_write(CPUState *cs, gdb_syscall_complete_cb complete, - GuestFD *gf, target_ulong buf, target_ulong len) + GuestFD *gf, uint64_t buf, uint64_t len) { CPUArchState *env G_GNUC_UNUSED =3D cpu_env(cs); char *ptr =3D lock_user(VERIFY_READ, buf, len, 1); @@ -638,7 +637,7 @@ static void console_write(CPUState *cs, gdb_syscall_com= plete_cb complete, } =20 static void console_fstat(CPUState *cs, gdb_syscall_complete_cb complete, - GuestFD *gf, target_ulong addr) + GuestFD *gf, uint64_t addr) { static const struct stat tty_buf =3D { .st_mode =3D 020666, /* S_IFCHR, ugo+rw */ @@ -683,7 +682,7 @@ static void console_poll_one(CPUState *cs, gdb_syscall_= complete_cb complete, */ =20 void semihost_sys_open(CPUState *cs, gdb_syscall_complete_cb complete, - target_ulong fname, target_ulong fname_len, + vaddr fname, uint64_t fname_len, int gdb_flags, int mode) { if (use_gdb_syscalls()) { @@ -719,7 +718,7 @@ void semihost_sys_close(CPUState *cs, gdb_syscall_compl= ete_cb complete, int fd) } =20 void semihost_sys_read_gf(CPUState *cs, gdb_syscall_complete_cb complete, - GuestFD *gf, target_ulong buf, target_ulong len) + GuestFD *gf, vaddr buf, uint64_t len) { /* * Bound length for 64-bit guests on 32-bit hosts, not overflowing ssi= ze_t. @@ -748,7 +747,7 @@ void semihost_sys_read_gf(CPUState *cs, gdb_syscall_com= plete_cb complete, } =20 void semihost_sys_read(CPUState *cs, gdb_syscall_complete_cb complete, - int fd, target_ulong buf, target_ulong len) + int fd, vaddr buf, uint64_t len) { GuestFD *gf =3D get_guestfd(fd); =20 @@ -760,7 +759,7 @@ void semihost_sys_read(CPUState *cs, gdb_syscall_comple= te_cb complete, } =20 void semihost_sys_write_gf(CPUState *cs, gdb_syscall_complete_cb complete, - GuestFD *gf, target_ulong buf, target_ulong len) + GuestFD *gf, vaddr buf, uint64_t len) { /* * Bound length for 64-bit guests on 32-bit hosts, not overflowing ssi= ze_t. @@ -790,7 +789,7 @@ void semihost_sys_write_gf(CPUState *cs, gdb_syscall_co= mplete_cb complete, } =20 void semihost_sys_write(CPUState *cs, gdb_syscall_complete_cb complete, - int fd, target_ulong buf, target_ulong len) + int fd, vaddr buf, uint64_t len) { GuestFD *gf =3D get_guestfd(fd); =20 @@ -856,7 +855,7 @@ void semihost_sys_isatty(CPUState *cs, gdb_syscall_comp= lete_cb complete, int fd) =20 void semihost_sys_flen(CPUState *cs, gdb_syscall_complete_cb fstat_cb, gdb_syscall_complete_cb flen_cb, int fd, - target_ulong fstat_addr) + vaddr fstat_addr) { GuestFD *gf =3D get_guestfd(fd); =20 @@ -881,7 +880,7 @@ void semihost_sys_flen(CPUState *cs, gdb_syscall_comple= te_cb fstat_cb, } =20 void semihost_sys_fstat(CPUState *cs, gdb_syscall_complete_cb complete, - int fd, target_ulong addr) + int fd, vaddr addr) { GuestFD *gf =3D get_guestfd(fd); =20 @@ -906,8 +905,8 @@ void semihost_sys_fstat(CPUState *cs, gdb_syscall_compl= ete_cb complete, } =20 void semihost_sys_stat(CPUState *cs, gdb_syscall_complete_cb complete, - target_ulong fname, target_ulong fname_len, - target_ulong addr) + vaddr fname, uint64_t fname_len, + vaddr addr) { if (use_gdb_syscalls()) { gdb_stat(cs, complete, fname, fname_len, addr); @@ -917,7 +916,7 @@ void semihost_sys_stat(CPUState *cs, gdb_syscall_comple= te_cb complete, } =20 void semihost_sys_remove(CPUState *cs, gdb_syscall_complete_cb complete, - target_ulong fname, target_ulong fname_len) + vaddr fname, uint64_t fname_len) { if (use_gdb_syscalls()) { gdb_remove(cs, complete, fname, fname_len); @@ -927,8 +926,8 @@ void semihost_sys_remove(CPUState *cs, gdb_syscall_comp= lete_cb complete, } =20 void semihost_sys_rename(CPUState *cs, gdb_syscall_complete_cb complete, - target_ulong oname, target_ulong oname_len, - target_ulong nname, target_ulong nname_len) + vaddr oname, uint64_t oname_len, + vaddr nname, uint64_t nname_len) { if (use_gdb_syscalls()) { gdb_rename(cs, complete, oname, oname_len, nname, nname_len); @@ -938,7 +937,7 @@ void semihost_sys_rename(CPUState *cs, gdb_syscall_comp= lete_cb complete, } =20 void semihost_sys_system(CPUState *cs, gdb_syscall_complete_cb complete, - target_ulong cmd, target_ulong cmd_len) + vaddr cmd, uint64_t cmd_len) { if (use_gdb_syscalls()) { gdb_system(cs, complete, cmd, cmd_len); @@ -948,7 +947,7 @@ void semihost_sys_system(CPUState *cs, gdb_syscall_comp= lete_cb complete, } =20 void semihost_sys_gettimeofday(CPUState *cs, gdb_syscall_complete_cb compl= ete, - target_ulong tv_addr, target_ulong tz_addr) + vaddr tv_addr, vaddr tz_addr) { if (use_gdb_syscalls()) { gdb_gettimeofday(cs, complete, tv_addr, tz_addr); diff --git a/semihosting/meson.build b/semihosting/meson.build index b1ab2506c6e..77200a7f27b 100644 --- a/semihosting/meson.build +++ b/semihosting/meson.build @@ -1,6 +1,5 @@ specific_ss.add(when: 'CONFIG_SEMIHOSTING', if_true: files( 'guestfd.c', - 'syscalls.c', )) =20 common_ss.add(when: 'CONFIG_SEMIHOSTING', if_false: files('stubs-all.c')) @@ -9,9 +8,12 @@ system_ss.add(when: 'CONFIG_SEMIHOSTING', if_true: files( 'config.c', 'console.c', 'uaccess.c', + 'syscalls.c', ), if_false: files( 'stubs-system.c', )) =20 +specific_ss.add(when: ['CONFIG_SEMIHOSTING', 'CONFIG_USER_ONLY'], + if_true: files('syscalls.c')) specific_ss.add(when: ['CONFIG_ARM_COMPATIBLE_SEMIHOSTING'], if_true: files('arm-compat-semi.c')) --=20 2.47.3