diff options
| -rw-r--r-- | hw/semihosting/config.c | 26 | ||||
| -rw-r--r-- | hw/semihosting/console.c | 9 | ||||
| -rw-r--r-- | include/hw/semihosting/semihost.h | 7 | ||||
| -rw-r--r-- | qemu-options.hx | 6 | ||||
| -rw-r--r-- | stubs/semihost.c | 4 | ||||
| -rw-r--r-- | vl.c | 2 |
6 files changed, 51 insertions, 3 deletions
diff --git a/hw/semihosting/config.c b/hw/semihosting/config.c index f1d3fe1..2a8e7e1 100644 --- a/hw/semihosting/config.c +++ b/hw/semihosting/config.c @@ -23,6 +23,7 @@ #include "qemu/config-file.h" #include "qemu/error-report.h" #include "hw/semihosting/semihost.h" +#include "chardev/char.h" QemuOptsList qemu_semihosting_config_opts = { .name = "semihosting-config", @@ -36,6 +37,9 @@ QemuOptsList qemu_semihosting_config_opts = { .name = "target", .type = QEMU_OPT_STRING, }, { + .name = "chardev", + .type = QEMU_OPT_STRING, + }, { .name = "arg", .type = QEMU_OPT_STRING, }, @@ -46,12 +50,14 @@ QemuOptsList qemu_semihosting_config_opts = { typedef struct SemihostingConfig { bool enabled; SemihostingTarget target; + Chardev *chardev; const char **argv; int argc; const char *cmdline; /* concatenated argv */ } SemihostingConfig; static SemihostingConfig semihosting; +static const char *semihost_chardev; bool semihosting_enabled(void) { @@ -115,6 +121,11 @@ void semihosting_arg_fallback(const char *file, const char *cmd) } } +Chardev *semihosting_get_chardev(void) +{ + return semihosting.chardev; +} + void qemu_semihosting_enable(void) { semihosting.enabled = true; @@ -132,6 +143,8 @@ int qemu_semihosting_config_options(const char *optarg) semihosting.enabled = qemu_opt_get_bool(opts, "enable", true); const char *target = qemu_opt_get(opts, "target"); + /* setup of chardev is deferred until they are initialised */ + semihost_chardev = qemu_opt_get(opts, "chardev"); if (target != NULL) { if (strcmp("native", target) == 0) { semihosting.target = SEMIHOSTING_TARGET_NATIVE; @@ -158,3 +171,16 @@ int qemu_semihosting_config_options(const char *optarg) return 0; } +void qemu_semihosting_connect_chardevs(void) +{ + /* We had to defer this until chardevs were created */ + if (semihost_chardev) { + Chardev *chr = qemu_chr_find(semihost_chardev); + if (chr == NULL) { + error_report("semihosting chardev '%s' not found", + semihost_chardev); + exit(1); + } + semihosting.chardev = chr; + } +} diff --git a/hw/semihosting/console.c b/hw/semihosting/console.c index 01826bd..466ea6d 100644 --- a/hw/semihosting/console.c +++ b/hw/semihosting/console.c @@ -17,13 +17,20 @@ #include "qemu/osdep.h" #include "cpu.h" +#include "hw/semihosting/semihost.h" #include "hw/semihosting/console.h" #include "exec/gdbstub.h" #include "qemu/log.h" +#include "chardev/char.h" int qemu_semihosting_log_out(const char *s, int len) { - return write(STDERR_FILENO, s, len); + Chardev *chardev = semihosting_get_chardev(); + if (chardev) { + return qemu_chr_write_all(chardev, (uint8_t *) s, len); + } else { + return write(STDERR_FILENO, s, len); + } } /* diff --git a/include/hw/semihosting/semihost.h b/include/hw/semihosting/semihost.h index 07ea40a..60fc42d 100644 --- a/include/hw/semihosting/semihost.h +++ b/include/hw/semihosting/semihost.h @@ -51,6 +51,11 @@ static inline const char *semihosting_get_cmdline(void) { return NULL; } + +static inline Chardev *semihosting_get_chardev(void) +{ + return NULL; +} #else /* !CONFIG_USER_ONLY */ bool semihosting_enabled(void); SemihostingTarget semihosting_get_target(void); @@ -58,9 +63,11 @@ const char *semihosting_get_arg(int i); int semihosting_get_argc(void); const char *semihosting_get_cmdline(void); void semihosting_arg_fallback(const char *file, const char *cmd); +Chardev *semihosting_get_chardev(void); /* for vl.c hooks */ void qemu_semihosting_enable(void); int qemu_semihosting_config_options(const char *opt); +void qemu_semihosting_connect_chardevs(void); #endif /* CONFIG_USER_ONLY */ #endif /* SEMIHOST_H */ diff --git a/qemu-options.hx b/qemu-options.hx index 7ae3373..39dc170 100644 --- a/qemu-options.hx +++ b/qemu-options.hx @@ -4025,12 +4025,12 @@ STEXI Enable semihosting mode (ARM, M68K, Xtensa, MIPS, Nios II only). ETEXI DEF("semihosting-config", HAS_ARG, QEMU_OPTION_semihosting_config, - "-semihosting-config [enable=on|off][,target=native|gdb|auto][,arg=str[,...]]\n" \ + "-semihosting-config [enable=on|off][,target=native|gdb|auto][,chardev=id][,arg=str[,...]]\n" \ " semihosting configuration\n", QEMU_ARCH_ARM | QEMU_ARCH_M68K | QEMU_ARCH_XTENSA | QEMU_ARCH_LM32 | QEMU_ARCH_MIPS | QEMU_ARCH_NIOS2) STEXI -@item -semihosting-config [enable=on|off][,target=native|gdb|auto][,arg=str[,...]] +@item -semihosting-config [enable=on|off][,target=native|gdb|auto][,chardev=id][,arg=str[,...]] @findex -semihosting-config Enable and configure semihosting (ARM, M68K, Xtensa, MIPS, Nios II only). @table @option @@ -4038,6 +4038,8 @@ Enable and configure semihosting (ARM, M68K, Xtensa, MIPS, Nios II only). Defines where the semihosting calls will be addressed, to QEMU (@code{native}) or to GDB (@code{gdb}). The default is @code{auto}, which means @code{gdb} during debug sessions and @code{native} otherwise. +@item chardev=@var{str1} +Send the output to a chardev backend output for native or auto output when not in gdb @item arg=@var{str1},arg=@var{str2},... Allows the user to pass input arguments, and can be used multiple times to build up a list. The old-style @code{-kernel}/@code{-append} method of passing a diff --git a/stubs/semihost.c b/stubs/semihost.c index 1a4e88e..4d5b3c0 100644 --- a/stubs/semihost.c +++ b/stubs/semihost.c @@ -64,3 +64,7 @@ const char *semihosting_get_cmdline(void) void semihosting_arg_fallback(const char *file, const char *cmd) { } + +void qemu_semihosting_connect_chardevs(void) +{ +} @@ -4170,6 +4170,8 @@ int main(int argc, char **argv, char **envp) qemu_opts_foreach(qemu_find_opts("chardev"), chardev_init_func, NULL, &error_fatal); + /* now chardevs have been created we may have semihosting to connect */ + qemu_semihosting_connect_chardevs(); #ifdef CONFIG_VIRTFS qemu_opts_foreach(qemu_find_opts("fsdev"), |