@@ -181,6 +181,10 @@ void gdb_handle_query_xfer_auxv(GArray *params, void *user_ctx); /*user */
void gdb_handle_query_attached(GArray *params, void *user_ctx); /* both */
+/* softmmu only */
+void gdb_handle_query_qemu_phy_mem_mode(GArray *params, void *user_ctx);
+void gdb_handle_set_qemu_phy_mem_mode(GArray *params, void *user_ctx);
+
/*
* Break/Watch point support - there is an implementation for softmmu
* and user mode.
@@ -190,4 +194,19 @@ int gdb_breakpoint_insert(CPUState *cs, int type, hwaddr addr, hwaddr len);
int gdb_breakpoint_remove(CPUState *cs, int type, hwaddr addr, hwaddr len);
void gdb_breakpoint_remove_all(CPUState *cs);
+/**
+ * gdb_target_memory_rw_debug() - handle debug access to memory
+ * @cs: CPUState
+ * @addr: nominal address, could be an entire physical address
+ * @buf: data
+ * @len: length of access
+ * @is_write: is it a write operation
+ *
+ * This function is specialised depending on the mode we are running
+ * in. For softmmu guests we can switch the interpretation of the
+ * address to a physical address.
+ */
+int gdb_target_memory_rw_debug(CPUState *cs, hwaddr addr,
+ uint8_t *buf, int len, bool is_write);
+
#endif /* GDBSTUB_INTERNALS_H */
@@ -46,33 +46,6 @@
#include "internals.h"
-#ifndef CONFIG_USER_ONLY
-static int phy_memory_mode;
-#endif
-
-static inline int target_memory_rw_debug(CPUState *cpu, target_ulong addr,
- uint8_t *buf, int len, bool is_write)
-{
- CPUClass *cc;
-
-#ifndef CONFIG_USER_ONLY
- if (phy_memory_mode) {
- if (is_write) {
- cpu_physical_memory_write(addr, buf, len);
- } else {
- cpu_physical_memory_read(addr, buf, len);
- }
- return 0;
- }
-#endif
-
- cc = CPU_GET_CLASS(cpu);
- if (cc->memory_rw_debug) {
- return cc->memory_rw_debug(cpu, addr, buf, len, is_write);
- }
- return cpu_memory_rw_debug(cpu, addr, buf, len, is_write);
-}
-
typedef struct GDBRegisterState {
int base_reg;
int num_regs;
@@ -1194,11 +1167,11 @@ static void handle_write_mem(GArray *params, void *user_ctx)
}
gdb_hextomem(gdbserver_state.mem_buf, get_param(params, 2)->data,
- get_param(params, 1)->val_ull);
- if (target_memory_rw_debug(gdbserver_state.g_cpu,
- get_param(params, 0)->val_ull,
- gdbserver_state.mem_buf->data,
- gdbserver_state.mem_buf->len, true)) {
+ get_param(params, 1)->val_ull);
+ if (gdb_target_memory_rw_debug(gdbserver_state.g_cpu,
+ get_param(params, 0)->val_ull,
+ gdbserver_state.mem_buf->data,
+ gdbserver_state.mem_buf->len, true)) {
gdb_put_packet("E14");
return;
}
@@ -1222,10 +1195,10 @@ static void handle_read_mem(GArray *params, void *user_ctx)
g_byte_array_set_size(gdbserver_state.mem_buf,
get_param(params, 1)->val_ull);
- if (target_memory_rw_debug(gdbserver_state.g_cpu,
- get_param(params, 0)->val_ull,
- gdbserver_state.mem_buf->data,
- gdbserver_state.mem_buf->len, false)) {
+ if (gdb_target_memory_rw_debug(gdbserver_state.g_cpu,
+ get_param(params, 0)->val_ull,
+ gdbserver_state.mem_buf->data,
+ gdbserver_state.mem_buf->len, false)) {
gdb_put_packet("E14");
return;
}
@@ -1675,30 +1648,6 @@ static void handle_query_qemu_supported(GArray *params, void *user_ctx)
gdb_put_strbuf();
}
-#ifndef CONFIG_USER_ONLY
-static void handle_query_qemu_phy_mem_mode(GArray *params,
- void *user_ctx)
-{
- g_string_printf(gdbserver_state.str_buf, "%d", phy_memory_mode);
- gdb_put_strbuf();
-}
-
-static void handle_set_qemu_phy_mem_mode(GArray *params, void *user_ctx)
-{
- if (!params->len) {
- gdb_put_packet("E22");
- return;
- }
-
- if (!get_param(params, 0)->val_ul) {
- phy_memory_mode = 0;
- } else {
- phy_memory_mode = 1;
- }
- gdb_put_packet("OK");
-}
-#endif
-
static const GdbCmdParseEntry gdb_gen_query_set_common_table[] = {
/* Order is important if has same prefix */
{
@@ -1789,7 +1738,7 @@ static const GdbCmdParseEntry gdb_gen_query_table[] = {
},
#ifndef CONFIG_USER_ONLY
{
- .handler = handle_query_qemu_phy_mem_mode,
+ .handler = gdb_handle_query_qemu_phy_mem_mode,
.cmd = "qemu.PhyMemMode",
},
#endif
@@ -1805,7 +1754,7 @@ static const GdbCmdParseEntry gdb_gen_set_table[] = {
},
#ifndef CONFIG_USER_ONLY
{
- .handler = handle_set_qemu_phy_mem_mode,
+ .handler = gdb_handle_set_qemu_phy_mem_mode,
.cmd = "qemu.PhyMemMode:",
.cmd_startswith = 1,
.schema = "l0"
@@ -409,9 +409,60 @@ void gdb_exit(int code)
qemu_chr_fe_deinit(&gdbserver_system_state.chr, true);
}
+/*
+ * Memory access
+ */
+static int phy_memory_mode;
+
+int gdb_target_memory_rw_debug(CPUState *cpu, hwaddr addr,
+ uint8_t *buf, int len, bool is_write)
+{
+ CPUClass *cc;
+
+ if (phy_memory_mode) {
+ if (is_write) {
+ cpu_physical_memory_write(addr, buf, len);
+ } else {
+ cpu_physical_memory_read(addr, buf, len);
+ }
+ return 0;
+ }
+
+ cc = CPU_GET_CLASS(cpu);
+ if (cc->memory_rw_debug) {
+ return cc->memory_rw_debug(cpu, addr, buf, len, is_write);
+ }
+
+ return cpu_memory_rw_debug(cpu, addr, buf, len, is_write);
+}
+
+
/*
* Softmmu specific command helpers
*/
+
+void gdb_handle_query_qemu_phy_mem_mode(GArray *params,
+ void *user_ctx)
+{
+ g_string_printf(gdbserver_state.str_buf, "%d", phy_memory_mode);
+ gdb_put_strbuf();
+}
+
+void gdb_handle_set_qemu_phy_mem_mode(GArray *params, void *user_ctx)
+{
+ if (!params->len) {
+ gdb_put_packet("E22");
+ return;
+ }
+
+ if (!get_param(params, 0)->val_ul) {
+ phy_memory_mode = 0;
+ } else {
+ phy_memory_mode = 1;
+ }
+ gdb_put_packet("OK");
+}
+
void gdb_handle_query_rcmd(GArray *params, void *user_ctx)
{
const guint8 zero = 0;
@@ -376,6 +376,21 @@ int gdb_continue_partial(char *newstates)
return res;
}
+/*
+ * Memory access helpers
+ */
+int gdb_target_memory_rw_debug(CPUState *cpu, hwaddr addr,
+ uint8_t *buf, int len, bool is_write)
+{
+ CPUClass *cc;
+
+ cc = CPU_GET_CLASS(cpu);
+ if (cc->memory_rw_debug) {
+ return cc->memory_rw_debug(cpu, addr, buf, len, is_write);
+ }
+ return cpu_memory_rw_debug(cpu, addr, buf, len, is_write);
+}
+
/*
* Break/Watch point helpers
*/
The two implementations are different enough to encourage having a specialisation and we can move some of the softmmu only stuff out of gdbstub. Signed-off-by: Alex Bennée <alex.bennee@linaro.org> --- gdbstub/internals.h | 19 ++++++++++++ gdbstub/gdbstub.c | 73 +++++++-------------------------------------- gdbstub/softmmu.c | 51 +++++++++++++++++++++++++++++++ gdbstub/user.c | 15 ++++++++++ 4 files changed, 96 insertions(+), 62 deletions(-)