diff --git a/configs/devices/m68k-softmmu/default.mak b/configs/devices/m68k-softmmu/default.mak index 7f8619e427..8dcaa28ed3 100644 --- a/configs/devices/m68k-softmmu/default.mak +++ b/configs/devices/m68k-softmmu/default.mak @@ -1,7 +1,5 @@ # Default configuration for m68k-softmmu -CONFIG_SEMIHOSTING=y - # Boards: # CONFIG_AN5206=y diff --git a/configs/devices/mips-softmmu/common.mak b/configs/devices/mips-softmmu/common.mak index 7da99327a7..1a853841b2 100644 --- a/configs/devices/mips-softmmu/common.mak +++ b/configs/devices/mips-softmmu/common.mak @@ -1,8 +1,5 @@ # Common mips*-softmmu CONFIG defines -# CONFIG_SEMIHOSTING is always required on this architecture -CONFIG_SEMIHOSTING=y - CONFIG_ISA_BUS=y CONFIG_PCI=y CONFIG_PCI_DEVICES=y diff --git a/configs/devices/nios2-softmmu/default.mak b/configs/devices/nios2-softmmu/default.mak index 1bc4082ea9..e130d024e6 100644 --- a/configs/devices/nios2-softmmu/default.mak +++ b/configs/devices/nios2-softmmu/default.mak @@ -1,7 +1,5 @@ # Default configuration for nios2-softmmu -CONFIG_SEMIHOSTING=y - # Boards: # CONFIG_NIOS2_10M50=y diff --git a/configs/devices/riscv32-softmmu/default.mak b/configs/devices/riscv32-softmmu/default.mak index d847bd5692..94a236c9c2 100644 --- a/configs/devices/riscv32-softmmu/default.mak +++ b/configs/devices/riscv32-softmmu/default.mak @@ -3,8 +3,6 @@ # Uncomment the following lines to disable these optional devices: # #CONFIG_PCI_DEVICES=n -CONFIG_SEMIHOSTING=y -CONFIG_ARM_COMPATIBLE_SEMIHOSTING=y # Boards: # diff --git a/configs/devices/riscv64-softmmu/default.mak b/configs/devices/riscv64-softmmu/default.mak index bc69301fa4..3f68059448 100644 --- a/configs/devices/riscv64-softmmu/default.mak +++ b/configs/devices/riscv64-softmmu/default.mak @@ -3,8 +3,6 @@ # Uncomment the following lines to disable these optional devices: # #CONFIG_PCI_DEVICES=n -CONFIG_SEMIHOSTING=y -CONFIG_ARM_COMPATIBLE_SEMIHOSTING=y # Boards: # diff --git a/configs/devices/xtensa-softmmu/default.mak b/configs/devices/xtensa-softmmu/default.mak index 4fe1bf00c9..49e4c9da88 100644 --- a/configs/devices/xtensa-softmmu/default.mak +++ b/configs/devices/xtensa-softmmu/default.mak @@ -1,7 +1,5 @@ # Default configuration for Xtensa -CONFIG_SEMIHOSTING=y - # Boards: # CONFIG_XTENSA_SIM=y diff --git a/configure b/configure index 3d8e24ae01..ff058d6c48 100755 --- a/configure +++ b/configure @@ -1644,6 +1644,9 @@ fi mkdir -p tests/tcg echo "# Automatically generated by configure - do not modify" > tests/tcg/$config_host_mak echo "SRC_PATH=$source_path" >> tests/tcg/$config_host_mak +if test "$plugins" = "yes" ; then + echo "CONFIG_PLUGIN=y" >> tests/tcg/$config_host_mak +fi tcg_tests_targets= for target in $target_list; do diff --git a/docs/about/deprecated.rst b/docs/about/deprecated.rst index c7b95e6068..7b0c59919e 100644 --- a/docs/about/deprecated.rst +++ b/docs/about/deprecated.rst @@ -192,6 +192,13 @@ in the QEMU object model anymore. ``power5+``, ``power5+_v2.1``, an alias, but for consistency these will get removed in a future release, too. Use ``power5p_v2.1`` and ``power7p_v2.1`` instead. +CRIS CPU architecture (since 9.0) +''''''''''''''''''''''''''''''''' + +The CRIS architecture was pulled from Linux in 4.17 and the compiler +is no longer packaged in any distro making it harder to run the +``check-tcg`` tests. Unless we can improve the testing situation there +is a chance the code will bitrot without anyone noticing. System emulator machines ------------------------ diff --git a/gdbstub/gdbstub.c b/gdbstub/gdbstub.c index 46d752bbc2..7e73e916bd 100644 --- a/gdbstub/gdbstub.c +++ b/gdbstub/gdbstub.c @@ -1617,6 +1617,7 @@ static void handle_query_supported(GArray *params, void *user_ctx) if (gdbserver_state.c_cpu->opaque) { g_string_append(gdbserver_state.str_buf, ";qXfer:auxv:read+"); } + g_string_append(gdbserver_state.str_buf, ";QCatchSyscalls+"); #endif g_string_append(gdbserver_state.str_buf, ";qXfer:exec-file:read+"); #endif @@ -1810,6 +1811,14 @@ static const GdbCmdParseEntry gdb_gen_set_table[] = { .schema = "l0" }, #endif +#if defined(CONFIG_USER_ONLY) + { + .handler = gdb_handle_set_catch_syscalls, + .cmd = "CatchSyscalls:", + .cmd_startswith = 1, + .schema = "s0", + }, +#endif }; static void handle_gen_query(GArray *params, void *user_ctx) diff --git a/gdbstub/internals.h b/gdbstub/internals.h index 5c0c725e54..56b7c13b75 100644 --- a/gdbstub/internals.h +++ b/gdbstub/internals.h @@ -136,6 +136,7 @@ void gdb_append_thread_id(CPUState *cpu, GString *buf); int gdb_get_cpu_index(CPUState *cpu); unsigned int gdb_get_max_cpus(void); /* both */ bool gdb_can_reverse(void); /* softmmu, stub for user */ +int gdb_target_sigtrap(void); /* user */ void gdb_create_default_process(GDBState *s); @@ -194,6 +195,7 @@ void gdb_handle_v_file_close(GArray *params, void *user_ctx); /* user */ void gdb_handle_v_file_pread(GArray *params, void *user_ctx); /* user */ void gdb_handle_v_file_readlink(GArray *params, void *user_ctx); /* user */ void gdb_handle_query_xfer_exec_file(GArray *params, void *user_ctx); /* user */ +void gdb_handle_set_catch_syscalls(GArray *params, void *user_ctx); /* user */ void gdb_handle_query_attached(GArray *params, void *user_ctx); /* both */ diff --git a/gdbstub/user-target.c b/gdbstub/user-target.c index c4bba4c72c..b7d4c37cd8 100644 --- a/gdbstub/user-target.c +++ b/gdbstub/user-target.c @@ -418,3 +418,8 @@ void gdb_handle_query_xfer_exec_file(GArray *params, void *user_ctx) ts->bprm->filename + offset); gdb_put_strbuf(); } + +int gdb_target_sigtrap(void) +{ + return TARGET_SIGTRAP; +} diff --git a/gdbstub/user.c b/gdbstub/user.c index dbe1d9b887..14918d1a21 100644 --- a/gdbstub/user.c +++ b/gdbstub/user.c @@ -10,6 +10,7 @@ */ #include "qemu/osdep.h" +#include "qemu/bitops.h" #include "qemu/cutils.h" #include "qemu/sockets.h" #include "exec/hwaddr.h" @@ -21,11 +22,20 @@ #include "trace.h" #include "internals.h" +#define GDB_NR_SYSCALLS 1024 +typedef unsigned long GDBSyscallsMask[BITS_TO_LONGS(GDB_NR_SYSCALLS)]; + /* User-mode specific state */ typedef struct { int fd; char *socket_path; int running_state; + /* + * Store syscalls mask without memory allocation in order to avoid + * implementing synchronization. + */ + bool catch_all_syscalls; + GDBSyscallsMask catch_syscalls_mask; } GDBUserState; static GDBUserState gdbserver_user_state; @@ -121,7 +131,7 @@ void gdb_qemu_exit(int code) exit(code); } -int gdb_handlesig(CPUState *cpu, int sig) +int gdb_handlesig_reason(CPUState *cpu, int sig, const char *reason) { char buf[256]; int n; @@ -141,6 +151,9 @@ int gdb_handlesig(CPUState *cpu, int sig) "T%02xthread:", gdb_target_signal_to_gdb(sig)); gdb_append_thread_id(cpu, gdbserver_state.str_buf); g_string_append_c(gdbserver_state.str_buf, ';'); + if (reason) { + g_string_append(gdbserver_state.str_buf, reason); + } gdb_put_strbuf(); gdbserver_state.allow_stop_reply = false; } @@ -499,3 +512,92 @@ void gdb_syscall_handling(const char *syscall_packet) gdb_put_packet(syscall_packet); gdb_handlesig(gdbserver_state.c_cpu, 0); } + +static bool should_catch_syscall(int num) +{ + if (gdbserver_user_state.catch_all_syscalls) { + return true; + } + if (num < 0 || num >= GDB_NR_SYSCALLS) { + return false; + } + return test_bit(num, gdbserver_user_state.catch_syscalls_mask); +} + +void gdb_syscall_entry(CPUState *cs, int num) +{ + if (should_catch_syscall(num)) { + g_autofree char *reason = g_strdup_printf("syscall_entry:%x;", num); + gdb_handlesig_reason(cs, gdb_target_sigtrap(), reason); + } +} + +void gdb_syscall_return(CPUState *cs, int num) +{ + if (should_catch_syscall(num)) { + g_autofree char *reason = g_strdup_printf("syscall_return:%x;", num); + gdb_handlesig_reason(cs, gdb_target_sigtrap(), reason); + } +} + +void gdb_handle_set_catch_syscalls(GArray *params, void *user_ctx) +{ + const char *param = get_param(params, 0)->data; + GDBSyscallsMask catch_syscalls_mask; + bool catch_all_syscalls; + unsigned int num; + const char *p; + + /* "0" means not catching any syscalls. */ + if (strcmp(param, "0") == 0) { + gdbserver_user_state.catch_all_syscalls = false; + memset(gdbserver_user_state.catch_syscalls_mask, 0, + sizeof(gdbserver_user_state.catch_syscalls_mask)); + gdb_put_packet("OK"); + return; + } + + /* "1" means catching all syscalls. */ + if (strcmp(param, "1") == 0) { + gdbserver_user_state.catch_all_syscalls = true; + gdb_put_packet("OK"); + return; + } + + /* + * "1;..." means catching only the specified syscalls. + * The syscall list must not be empty. + */ + if (param[0] == '1' && param[1] == ';') { + catch_all_syscalls = false; + memset(catch_syscalls_mask, 0, sizeof(catch_syscalls_mask)); + for (p = ¶m[2];; p++) { + if (qemu_strtoui(p, &p, 16, &num) || (*p && *p != ';')) { + goto err; + } + if (num >= GDB_NR_SYSCALLS) { + /* + * Fall back to reporting all syscalls. Reporting extra + * syscalls is inefficient, but the spec explicitly allows it. + * Keep parsing in case there is a syntax error ahead. + */ + catch_all_syscalls = true; + } else { + set_bit(num, catch_syscalls_mask); + } + if (!*p) { + break; + } + } + gdbserver_user_state.catch_all_syscalls = catch_all_syscalls; + if (!catch_all_syscalls) { + memcpy(gdbserver_user_state.catch_syscalls_mask, + catch_syscalls_mask, sizeof(catch_syscalls_mask)); + } + gdb_put_packet("OK"); + return; + } + +err: + gdb_put_packet("E00"); +} diff --git a/include/gdbstub/user.h b/include/gdbstub/user.h index d392e510c5..68b6534130 100644 --- a/include/gdbstub/user.h +++ b/include/gdbstub/user.h @@ -10,9 +10,10 @@ #define GDBSTUB_USER_H /** - * gdb_handlesig() - yield control to gdb + * gdb_handlesig_reason() - yield control to gdb * @cpu: CPU * @sig: if non-zero, the signal number which caused us to stop + * @reason: stop reason for stop reply packet or NULL * * This function yields control to gdb, when a user-mode-only target * needs to stop execution. If @sig is non-zero, then we will send a @@ -24,7 +25,18 @@ * or 0 if no signal should be delivered, ie the signal that caused * us to stop should be ignored. */ -int gdb_handlesig(CPUState *, int); +int gdb_handlesig_reason(CPUState *, int, const char *); + +/** + * gdb_handlesig() - yield control to gdb + * @cpu CPU + * @sig: if non-zero, the signal number which caused us to stop + * @see gdb_handlesig_reason() + */ +static inline int gdb_handlesig(CPUState *cpu, int sig) +{ + return gdb_handlesig_reason(cpu, sig, NULL); +} /** * gdb_signalled() - inform remote gdb of sig exit @@ -39,5 +51,18 @@ void gdb_signalled(CPUArchState *as, int sig); */ void gdbserver_fork(CPUState *cs); +/** + * gdb_syscall_entry() - inform gdb of syscall entry and yield control to it + * @cs: CPU + * @num: syscall number + */ +void gdb_syscall_entry(CPUState *cs, int num); + +/** + * gdb_syscall_entry() - inform gdb of syscall return and yield control to it + * @cs: CPU + * @num: syscall number + */ +void gdb_syscall_return(CPUState *cs, int num); #endif /* GDBSTUB_USER_H */ diff --git a/include/hw/elf_ops.h b/include/hw/elf_ops.h index 3e966ddd5a..9c35d1b9da 100644 --- a/include/hw/elf_ops.h +++ b/include/hw/elf_ops.h @@ -427,16 +427,6 @@ static ssize_t glue(load_elf, SZ)(const char *name, int fd, file_size = ph->p_filesz; /* Size of the allocated data */ data_offset = ph->p_offset; /* Offset where the data is located */ - /* - * Some ELF files really do have segments of zero size; - * just ignore them rather than trying to set the wrong addr, - * or create empty ROM blobs, because the zero-length blob can - * falsely trigger the overlapping-ROM-blobs check. - */ - if (mem_size == 0) { - continue; - } - if (file_size > 0) { if (g_mapped_file_get_length(mapped_file) < file_size + data_offset) { @@ -540,38 +530,45 @@ static ssize_t glue(load_elf, SZ)(const char *name, int fd, *pentry = ehdr.e_entry - ph->p_vaddr + ph->p_paddr; } - if (load_rom) { - g_autofree char *label = - g_strdup_printf("%s ELF program header segment %d", - name, i); + /* Some ELF files really do have segments of zero size; + * just ignore them rather than trying to create empty + * ROM blobs, because the zero-length blob can falsely + * trigger the overlapping-ROM-blobs check. + */ + if (mem_size != 0) { + if (load_rom) { + g_autofree char *label = + g_strdup_printf("%s ELF program header segment %d", + name, i); - /* - * rom_add_elf_program() takes its own reference to - * 'mapped_file'. - */ - rom_add_elf_program(label, mapped_file, data, file_size, - mem_size, addr, as); - } else { - MemTxResult res; + /* + * rom_add_elf_program() takes its own reference to + * 'mapped_file'. + */ + rom_add_elf_program(label, mapped_file, data, file_size, + mem_size, addr, as); + } else { + MemTxResult res; - res = address_space_write(as ? as : &address_space_memory, - addr, MEMTXATTRS_UNSPECIFIED, - data, file_size); - if (res != MEMTX_OK) { - goto fail; - } - /* - * We need to zero'ify the space that is not copied - * from file - */ - if (file_size < mem_size) { - res = address_space_set(as ? as : &address_space_memory, - addr + file_size, 0, - mem_size - file_size, - MEMTXATTRS_UNSPECIFIED); + res = address_space_write(as ? as : &address_space_memory, + addr, MEMTXATTRS_UNSPECIFIED, + data, file_size); if (res != MEMTX_OK) { goto fail; } + /* + * We need to zero'ify the space that is not copied + * from file + */ + if (file_size < mem_size) { + res = address_space_set(as ? as : &address_space_memory, + addr + file_size, 0, + mem_size - file_size, + MEMTXATTRS_UNSPECIFIED); + if (res != MEMTX_OK) { + goto fail; + } + } } } diff --git a/include/user/syscall-trace.h b/include/user/syscall-trace.h index 557f881a79..b48b2b2d0a 100644 --- a/include/user/syscall-trace.h +++ b/include/user/syscall-trace.h @@ -11,6 +11,7 @@ #define SYSCALL_TRACE_H #include "exec/user/abitypes.h" +#include "gdbstub/user.h" #include "qemu/plugin.h" #include "trace/trace-root.h" @@ -20,7 +21,7 @@ * could potentially unify the -strace code here as well. */ -static inline void record_syscall_start(void *cpu, int num, +static inline void record_syscall_start(CPUState *cpu, int num, abi_long arg1, abi_long arg2, abi_long arg3, abi_long arg4, abi_long arg5, abi_long arg6, @@ -29,11 +30,13 @@ static inline void record_syscall_start(void *cpu, int num, qemu_plugin_vcpu_syscall(cpu, num, arg1, arg2, arg3, arg4, arg5, arg6, arg7, arg8); + gdb_syscall_entry(cpu, num); } -static inline void record_syscall_return(void *cpu, int num, abi_long ret) +static inline void record_syscall_return(CPUState *cpu, int num, abi_long ret) { qemu_plugin_vcpu_syscall_ret(cpu, num, ret); + gdb_syscall_return(cpu, num); } diff --git a/target/m68k/Kconfig b/target/m68k/Kconfig index 23debad519..9eae71486f 100644 --- a/target/m68k/Kconfig +++ b/target/m68k/Kconfig @@ -1,2 +1,3 @@ config M68K bool + select SEMIHOSTING diff --git a/target/mips/Kconfig b/target/mips/Kconfig index 6adf145354..eb19c94c7d 100644 --- a/target/mips/Kconfig +++ b/target/mips/Kconfig @@ -1,5 +1,6 @@ config MIPS bool + select SEMIHOSTING config MIPS64 bool diff --git a/target/nios2/Kconfig b/target/nios2/Kconfig index 1529ab8950..c65550c861 100644 --- a/target/nios2/Kconfig +++ b/target/nios2/Kconfig @@ -1,2 +1,3 @@ config NIOS2 bool + select SEMIHOSTING diff --git a/target/riscv/Kconfig b/target/riscv/Kconfig index b9e5932f13..adb7de3f37 100644 --- a/target/riscv/Kconfig +++ b/target/riscv/Kconfig @@ -1,5 +1,7 @@ config RISCV32 bool + select ARM_COMPATIBLE_SEMIHOSTING # for do_common_semihosting() config RISCV64 bool + select ARM_COMPATIBLE_SEMIHOSTING # for do_common_semihosting() diff --git a/target/xtensa/Kconfig b/target/xtensa/Kconfig index a3c8dc7f6d..5e46049262 100644 --- a/target/xtensa/Kconfig +++ b/target/xtensa/Kconfig @@ -1,2 +1,3 @@ config XTENSA bool + select SEMIHOSTING diff --git a/tests/docker/dockerfiles/opensuse-leap.docker b/tests/docker/dockerfiles/opensuse-leap.docker index dc0e36ce48..cf753383a4 100644 --- a/tests/docker/dockerfiles/opensuse-leap.docker +++ b/tests/docker/dockerfiles/opensuse-leap.docker @@ -90,6 +90,7 @@ RUN zypper update -y && \ pcre-devel-static \ pipewire-devel \ pkgconfig \ + python311 \ python311-base \ python311-pip \ python311-setuptools \ diff --git a/tests/lcitool/mappings.yml b/tests/lcitool/mappings.yml index 0b908882f1..407c03301b 100644 --- a/tests/lcitool/mappings.yml +++ b/tests/lcitool/mappings.yml @@ -59,6 +59,10 @@ mappings: CentOSStream8: OpenSUSELeap15: + python3-sqlite3: + CentOSStream8: python38 + OpenSUSELeap15: python311 + python3-tomli: # test using tomllib apk: diff --git a/tests/lcitool/projects/qemu.yml b/tests/lcitool/projects/qemu.yml index 82092c9f17..149b15de57 100644 --- a/tests/lcitool/projects/qemu.yml +++ b/tests/lcitool/projects/qemu.yml @@ -97,6 +97,7 @@ packages: - python3-pip - python3-sphinx - python3-sphinx-rtd-theme + - python3-sqlite3 - python3-tomli - python3-venv - rpm2cpio diff --git a/tests/tcg/multiarch/Makefile.target b/tests/tcg/multiarch/Makefile.target index 315a2e1358..e10951a801 100644 --- a/tests/tcg/multiarch/Makefile.target +++ b/tests/tcg/multiarch/Makefile.target @@ -108,13 +108,21 @@ run-gdbstub-prot-none: prot-none --bin $< --test $(MULTIARCH_SRC)/gdbstub/prot-none.py, \ accessing PROT_NONE memory) +run-gdbstub-catch-syscalls: catch-syscalls + $(call run-test, $@, $(GDB_SCRIPT) \ + --gdb $(GDB) \ + --qemu $(QEMU) --qargs "$(QEMU_OPTS)" \ + --bin $< --test $(MULTIARCH_SRC)/gdbstub/catch-syscalls.py, \ + hitting a syscall catchpoint) + else run-gdbstub-%: $(call skip-test, "gdbstub test $*", "need working gdb with $(patsubst -%,,$(TARGET_NAME)) support") endif EXTRA_RUNS += run-gdbstub-sha1 run-gdbstub-qxfer-auxv-read \ run-gdbstub-proc-mappings run-gdbstub-thread-breakpoint \ - run-gdbstub-registers run-gdbstub-prot-none + run-gdbstub-registers run-gdbstub-prot-none \ + run-gdbstub-catch-syscalls # ARM Compatible Semi Hosting Tests # diff --git a/tests/tcg/multiarch/catch-syscalls.c b/tests/tcg/multiarch/catch-syscalls.c new file mode 100644 index 0000000000..d1ff1936a7 --- /dev/null +++ b/tests/tcg/multiarch/catch-syscalls.c @@ -0,0 +1,51 @@ +/* + * Test GDB syscall catchpoints. + * + * SPDX-License-Identifier: GPL-2.0-or-later + */ +#define _GNU_SOURCE +#include +#include + +const char *catch_syscalls_state = "start"; + +void end_of_main(void) +{ +} + +int main(void) +{ + int ret = EXIT_FAILURE; + char c0 = 'A', c1; + int fd[2]; + + catch_syscalls_state = "pipe2"; + if (pipe2(fd, 0)) { + goto out; + } + + catch_syscalls_state = "write"; + if (write(fd[1], &c0, sizeof(c0)) != sizeof(c0)) { + goto out_close; + } + + catch_syscalls_state = "read"; + if (read(fd[0], &c1, sizeof(c1)) != sizeof(c1)) { + goto out_close; + } + + catch_syscalls_state = "check"; + if (c0 == c1) { + ret = EXIT_SUCCESS; + } + +out_close: + catch_syscalls_state = "close"; + close(fd[0]); + close(fd[1]); + +out: + catch_syscalls_state = "end"; + end_of_main(); + return ret; +} diff --git a/tests/tcg/multiarch/gdbstub/catch-syscalls.py b/tests/tcg/multiarch/gdbstub/catch-syscalls.py new file mode 100644 index 0000000000..ccce35902f --- /dev/null +++ b/tests/tcg/multiarch/gdbstub/catch-syscalls.py @@ -0,0 +1,53 @@ +"""Test GDB syscall catchpoints. + +SPDX-License-Identifier: GPL-2.0-or-later +""" +from test_gdbstub import main, report + + +def check_state(expected): + """Check the catch_syscalls_state value""" + actual = gdb.parse_and_eval("catch_syscalls_state").string() + report(actual == expected, "{} == {}".format(actual, expected)) + + +def run_test(): + """Run through the tests one by one""" + gdb.Breakpoint("main") + gdb.execute("continue") + + # Check that GDB stops for pipe2/read calls/returns, but not for write. + gdb.execute("delete") + try: + gdb.execute("catch syscall pipe2 read") + except gdb.error as exc: + exc_str = str(exc) + if "not supported on this architecture" in exc_str: + print("SKIP: {}".format(exc_str)) + return + raise + for _ in range(2): + gdb.execute("continue") + check_state("pipe2") + for _ in range(2): + gdb.execute("continue") + check_state("read") + + # Check that deletion works. + gdb.execute("delete") + gdb.Breakpoint("end_of_main") + gdb.execute("continue") + check_state("end") + + # Check that catch-all works (libc should at least call exit). + gdb.execute("delete") + gdb.execute("catch syscall") + gdb.execute("continue") + gdb.execute("delete") + gdb.execute("continue") + + exitcode = int(gdb.parse_and_eval("$_exitcode")) + report(exitcode == 0, "{} == 0".format(exitcode)) + + +main(run_test)