diff options
author | Alex Bennée <alex.bennee@linaro.org> | 2023-08-29 17:15:27 +0100 |
---|---|---|
committer | Alex Bennée <alex.bennee@linaro.org> | 2023-08-30 14:57:56 +0100 |
commit | d0e5fa849db4d729e0607ef597cb31eac79532a3 (patch) | |
tree | 08aaef7569c1a3a2d3d0151399a0464037bf4683 | |
parent | 56e534bd116afda6f7b9ef96691549373c64040d (diff) | |
download | qemu-d0e5fa849db4d729e0607ef597cb31eac79532a3.zip qemu-d0e5fa849db4d729e0607ef597cb31eac79532a3.tar.gz qemu-d0e5fa849db4d729e0607ef597cb31eac79532a3.tar.bz2 |
gdbstub: replace global gdb_has_xml with a function
Try and make the self reported global hack a little less hackish by
providing a query function instead. As gdb_has_xml was always set if
we negotiated XML we can now use the presence of ->target_xml as the
test instead.
Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Signed-off-by: Alex Bennée <alex.bennee@linaro.org>
Message-Id: <20230829161528.2707696-12-alex.bennee@linaro.org>
-rw-r--r-- | gdbstub/gdbstub.c | 12 | ||||
-rw-r--r-- | gdbstub/internals.h | 1 | ||||
-rw-r--r-- | gdbstub/softmmu.c | 1 | ||||
-rw-r--r-- | gdbstub/user.c | 1 | ||||
-rw-r--r-- | include/exec/gdbstub.h | 10 | ||||
-rw-r--r-- | target/arm/gdbstub.c | 8 | ||||
-rw-r--r-- | target/ppc/gdbstub.c | 4 |
7 files changed, 19 insertions, 18 deletions
diff --git a/gdbstub/gdbstub.c b/gdbstub/gdbstub.c index 729e541..fdebfe2 100644 --- a/gdbstub/gdbstub.c +++ b/gdbstub/gdbstub.c @@ -75,8 +75,6 @@ void gdb_init_gdbserver_state(void) gdbserver_state.sstep_flags &= gdbserver_state.supported_sstep_flags; } -bool gdb_has_xml; - /* writes 2*len+1 bytes in buf */ void gdb_memtohex(GString *buf, const uint8_t *mem, int len) { @@ -351,6 +349,11 @@ static CPUState *gdb_get_cpu(uint32_t pid, uint32_t tid) } } +bool gdb_has_xml(void) +{ + return !!gdb_get_cpu_process(gdbserver_state.g_cpu)->target_xml; +} + static const char *get_feature_xml(const char *p, const char **newp, GDBProcess *process) { @@ -1084,7 +1087,7 @@ static void handle_set_reg(GArray *params, void *user_ctx) { int reg_size; - if (!gdb_has_xml) { + if (!gdb_get_cpu_process(gdbserver_state.g_cpu)->target_xml) { gdb_put_packet(""); return; } @@ -1105,7 +1108,7 @@ static void handle_get_reg(GArray *params, void *user_ctx) { int reg_size; - if (!gdb_has_xml) { + if (!gdb_get_cpu_process(gdbserver_state.g_cpu)->target_xml) { gdb_put_packet(""); return; } @@ -1572,7 +1575,6 @@ static void handle_query_xfer_features(GArray *params, void *user_ctx) return; } - gdb_has_xml = true; p = get_param(params, 0)->data; xml = get_feature_xml(p, &p, process); if (!xml) { diff --git a/gdbstub/internals.h b/gdbstub/internals.h index 4876ebd..fee2430 100644 --- a/gdbstub/internals.h +++ b/gdbstub/internals.h @@ -33,6 +33,7 @@ typedef struct GDBProcess { uint32_t pid; bool attached; + /* If gdb sends qXfer:features:read:target.xml this will be populated */ char *target_xml; } GDBProcess; diff --git a/gdbstub/softmmu.c b/gdbstub/softmmu.c index f509b72..9f0b8b5 100644 --- a/gdbstub/softmmu.c +++ b/gdbstub/softmmu.c @@ -97,7 +97,6 @@ static void gdb_chr_event(void *opaque, QEMUChrEvent event) vm_stop(RUN_STATE_PAUSED); replay_gdb_attached(); - gdb_has_xml = false; break; default: break; diff --git a/gdbstub/user.c b/gdbstub/user.c index 5b375be..7ab6e5d 100644 --- a/gdbstub/user.c +++ b/gdbstub/user.c @@ -198,7 +198,6 @@ static void gdb_accept_init(int fd) gdbserver_state.c_cpu = gdb_first_attached_cpu(); gdbserver_state.g_cpu = gdbserver_state.c_cpu; gdbserver_user_state.fd = fd; - gdb_has_xml = false; } static bool gdb_accept_socket(int gdb_fd) diff --git a/include/exec/gdbstub.h b/include/exec/gdbstub.h index 7d743fe..0ee39cf 100644 --- a/include/exec/gdbstub.h +++ b/include/exec/gdbstub.h @@ -31,12 +31,12 @@ int gdbserver_start(const char *port_or_device); void gdb_set_stop_cpu(CPUState *cpu); /** - * gdb_has_xml: - * This is an ugly hack to cope with both new and old gdb. - * If gdb sends qXfer:features:read then assume we're talking to a newish - * gdb that understands target descriptions. + * gdb_has_xml() - report of gdb supports modern target descriptions + * + * This will report true if the gdb negotiated qXfer:features:read + * target descriptions. */ -extern bool gdb_has_xml; +bool gdb_has_xml(void); /* in gdbstub-xml.c, generated by scripts/feature_to_c.sh */ extern const char *const xml_builtin[][2]; diff --git a/target/arm/gdbstub.c b/target/arm/gdbstub.c index f421c5d..8fc8351 100644 --- a/target/arm/gdbstub.c +++ b/target/arm/gdbstub.c @@ -48,7 +48,7 @@ int arm_cpu_gdb_read_register(CPUState *cs, GByteArray *mem_buf, int n) } if (n < 24) { /* FPA registers. */ - if (gdb_has_xml) { + if (gdb_has_xml()) { return 0; } return gdb_get_zeroes(mem_buf, 12); @@ -56,7 +56,7 @@ int arm_cpu_gdb_read_register(CPUState *cs, GByteArray *mem_buf, int n) switch (n) { case 24: /* FPA status register. */ - if (gdb_has_xml) { + if (gdb_has_xml()) { return 0; } return gdb_get_reg32(mem_buf, 0); @@ -102,7 +102,7 @@ int arm_cpu_gdb_write_register(CPUState *cs, uint8_t *mem_buf, int n) } if (n < 24) { /* 16-23 */ /* FPA registers (ignored). */ - if (gdb_has_xml) { + if (gdb_has_xml()) { return 0; } return 12; @@ -110,7 +110,7 @@ int arm_cpu_gdb_write_register(CPUState *cs, uint8_t *mem_buf, int n) switch (n) { case 24: /* FPA status register (ignored). */ - if (gdb_has_xml) { + if (gdb_has_xml()) { return 0; } return 4; diff --git a/target/ppc/gdbstub.c b/target/ppc/gdbstub.c index ca39efd..2ad1151 100644 --- a/target/ppc/gdbstub.c +++ b/target/ppc/gdbstub.c @@ -56,7 +56,7 @@ static int ppc_gdb_register_len(int n) return sizeof(target_ulong); case 32 ... 63: /* fprs */ - if (gdb_has_xml) { + if (gdb_has_xml()) { return 0; } return 8; @@ -76,7 +76,7 @@ static int ppc_gdb_register_len(int n) return sizeof(target_ulong); case 70: /* fpscr */ - if (gdb_has_xml) { + if (gdb_has_xml()) { return 0; } return sizeof(target_ulong); |