From fb08790b35174a98301ecbac4d5234d0cbfebea0 Mon Sep 17 00:00:00 2001 From: Richard Henderson Date: Sun, 1 May 2022 16:59:06 -0700 Subject: [PATCH] semihosting: Cleanup chardev init Rename qemu_semihosting_connect_chardevs to qemu_semihosting_chardev_init; pass the result directly to qemu_semihosting_console_init. Store the chardev in SemihostingConsole instead of SemihostingConfig, which lets us drop semihosting_get_chardev. Reviewed-by: Luc Michel Signed-off-by: Richard Henderson --- include/semihosting/semihost.h | 13 ++----------- semihosting/config.c | 17 +++++++---------- semihosting/console.c | 31 +++++++++++++++---------------- softmmu/vl.c | 3 +-- stubs/semihost.c | 6 +----- 5 files changed, 26 insertions(+), 44 deletions(-) diff --git a/include/semihosting/semihost.h b/include/semihosting/semihost.h index 0c55ade3ac..5b36a76f08 100644 --- a/include/semihosting/semihost.h +++ b/include/semihosting/semihost.h @@ -51,14 +51,6 @@ static inline const char *semihosting_get_cmdline(void) { return NULL; } - -static inline Chardev *semihosting_get_chardev(void) -{ - return NULL; -} -static inline void qemu_semihosting_console_init(void) -{ -} #else /* !CONFIG_USER_ONLY */ bool semihosting_enabled(void); SemihostingTarget semihosting_get_target(void); @@ -66,12 +58,11 @@ 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); -void qemu_semihosting_console_init(void); +void qemu_semihosting_chardev_init(void); +void qemu_semihosting_console_init(Chardev *); #endif /* CONFIG_USER_ONLY */ #endif /* SEMIHOST_H */ diff --git a/semihosting/config.c b/semihosting/config.c index 3afacf54ab..e171d4d6bc 100644 --- a/semihosting/config.c +++ b/semihosting/config.c @@ -51,7 +51,6 @@ QemuOptsList qemu_semihosting_config_opts = { typedef struct SemihostingConfig { bool enabled; SemihostingTarget target; - Chardev *chardev; char **argv; int argc; const char *cmdline; /* concatenated argv */ @@ -122,11 +121,6 @@ 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; @@ -172,16 +166,19 @@ 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 */ +void qemu_semihosting_chardev_init(void) { - /* We had to defer this until chardevs were created */ + Chardev *chr = NULL; + if (semihost_chardev) { - Chardev *chr = qemu_chr_find(semihost_chardev); + chr = qemu_chr_find(semihost_chardev); if (chr == NULL) { error_report("semihosting chardev '%s' not found", semihost_chardev); exit(1); } - semihosting.chardev = chr; } + + qemu_semihosting_console_init(chr); } diff --git a/semihosting/console.c b/semihosting/console.c index e5ac3f20ba..1d16a290c4 100644 --- a/semihosting/console.c +++ b/semihosting/console.c @@ -27,11 +27,21 @@ #include "qapi/error.h" #include "qemu/fifo8.h" +/* Access to this structure is protected by the BQL */ +typedef struct SemihostingConsole { + CharBackend backend; + Chardev *chr; + GSList *sleeping_cpus; + bool got; + Fifo8 fifo; +} SemihostingConsole; + +static SemihostingConsole console; + int qemu_semihosting_log_out(const char *s, int len) { - Chardev *chardev = semihosting_get_chardev(); - if (chardev) { - return qemu_chr_write_all(chardev, (uint8_t *) s, len); + if (console.chr) { + return qemu_chr_write_all(console.chr, (uint8_t *) s, len); } else { return write(STDERR_FILENO, s, len); } @@ -106,16 +116,6 @@ void qemu_semihosting_console_outc(CPUArchState *env, target_ulong addr) #define FIFO_SIZE 1024 -/* Access to this structure is protected by the BQL */ -typedef struct SemihostingConsole { - CharBackend backend; - GSList *sleeping_cpus; - bool got; - Fifo8 fifo; -} SemihostingConsole; - -static SemihostingConsole console; - static int console_can_read(void *opaque) { SemihostingConsole *c = opaque; @@ -169,10 +169,9 @@ int qemu_semihosting_console_read(CPUState *cs, void *buf, int len) return ret; } -void qemu_semihosting_console_init(void) +void qemu_semihosting_console_init(Chardev *chr) { - Chardev *chr = semihosting_get_chardev(); - + console.chr = chr; if (chr) { fifo8_create(&console.fifo, FIFO_SIZE); qemu_chr_fe_init(&console.backend, chr, &error_abort); diff --git a/softmmu/vl.c b/softmmu/vl.c index 3dca5936c7..b24772841d 100644 --- a/softmmu/vl.c +++ b/softmmu/vl.c @@ -1917,8 +1917,7 @@ static void qemu_create_late_backends(void) exit(1); /* now chardevs have been created we may have semihosting to connect */ - qemu_semihosting_connect_chardevs(); - qemu_semihosting_console_init(); + qemu_semihosting_chardev_init(); } static void qemu_resolve_machine_memdev(void) diff --git a/stubs/semihost.c b/stubs/semihost.c index 4bf2cf71b9..f486651afb 100644 --- a/stubs/semihost.c +++ b/stubs/semihost.c @@ -65,10 +65,6 @@ void semihosting_arg_fallback(const char *file, const char *cmd) { } -void qemu_semihosting_connect_chardevs(void) -{ -} - -void qemu_semihosting_console_init(void) +void qemu_semihosting_chardev_init(void) { }