Pavel Dovgalyuk <pavel.dovga...@ispras.ru> writes:
> From: Pavel Dovgalyuk <pavel.dovga...@ispras.ru> > > This patch adds interface functions that may be called from the loaded > plugins. > Such functions are needed to inspect the VM state and to pass data > to the QEMU (e.g., QEMU-side logging). > > Signed-off-by: Pavel Dovgalyuk <pavel.dovga...@ispras.ru> Reviewed-by: Alex Bennée <alex.ben...@linaro.org> > --- > Makefile.target | 2 +- > plugins/include/plugins.h | 6 ++++++ > plugins/qemulib.c | 31 +++++++++++++++++++++++++++++++ > 3 files changed, 38 insertions(+), 1 deletion(-) > create mode 100644 plugins/qemulib.c > > diff --git a/Makefile.target b/Makefile.target > index 4cffd96..5648c9c 100644 > --- a/Makefile.target > +++ b/Makefile.target > @@ -93,7 +93,7 @@ all: $(PROGS) stap > # cpu emulator library > obj-y += exec.o > obj-y += accel/ > -obj-$(CONFIG_PLUGINS) += plugins/plugins.o > +obj-$(CONFIG_PLUGINS) += plugins/plugins.o plugins/qemulib.o > obj-$(CONFIG_TCG) += tcg/tcg.o tcg/tcg-op.o tcg/tcg-op-vec.o > tcg/tcg-op-gvec.o > obj-$(CONFIG_TCG) += tcg/tcg-common.o tcg/optimize.o > obj-$(CONFIG_TCG_INTERPRETER) += tcg/tci.o > diff --git a/plugins/include/plugins.h b/plugins/include/plugins.h > index 100a786..fa624ea 100644 > --- a/plugins/include/plugins.h > +++ b/plugins/include/plugins.h > @@ -9,4 +9,10 @@ bool plugin_init(const char *args); > bool plugin_needs_before_insn(uint64_t pc, void *cpu); > void plugin_before_insn(uint64_t pc, void *cpu); > > +/* QEMU interface */ > + > +void qemulib_log(const char *fmt, ...) /*GCC_FMT_ATTR(1, 2)*/; > +int qemulib_read_memory(void *cpu, uint64_t addr, uint8_t *buf, int len); > +int qemulib_read_register(void *cpu, uint8_t *mem_buf, int reg); > + > #endif /* PLUGINS_INTERFACE_H */ > diff --git a/plugins/qemulib.c b/plugins/qemulib.c > new file mode 100644 > index 0000000..eb812c1 > --- /dev/null > +++ b/plugins/qemulib.c > @@ -0,0 +1,31 @@ > +#include "qemu/osdep.h" > +#include "qemu-common.h" > +#include "cpu.h" > +#include "qemu/error-report.h" > +#include "qemu/plugins.h" > +#include "qemu/log.h" > +#include "include/plugins.h" > + > +void qemulib_log(const char *fmt, ...) > +{ > + va_list args; > + va_start(args, fmt); > + qemu_log_vprintf(fmt, args); > + va_end(args); > +} > + > +int qemulib_read_memory(void *cpu, uint64_t addr, uint8_t *buf, int len) > +{ > + return cpu_memory_rw_debug(cpu, addr, buf, len, false); > +} > + > +int qemulib_read_register(void *cpu, uint8_t *mem_buf, int reg) > +{ > + CPUClass *cc = CPU_GET_CLASS(cpu); > + > + if (reg < cc->gdb_num_core_regs) { > + return cc->gdb_read_register(cpu, mem_buf, reg); > + } > + > + return 0; > +} -- Alex Bennée