| Message ID | 20241206102605.961658-4-rowanbhart@gmail.com (mailing list archive) |
|---|---|
| State | New |
| Headers | show |
| Series | Add additional plugin API functions to read and write memory and registers | expand |
On 12/6/24 02:26, Rowan Hart wrote: > From: novafacing <rowanbhart@gmail.com> > > --- > tests/tcg/plugins/inject.c | 206 +++++++++++++++++++++++++++++++ > tests/tcg/plugins/meson.build | 2 +- > tests/tcg/x86_64/Makefile.target | 1 + > tests/tcg/x86_64/inject-target.c | 27 ++++ > 4 files changed, 235 insertions(+), 1 deletion(-) > create mode 100644 tests/tcg/plugins/inject.c > create mode 100644 tests/tcg/x86_64/inject-target.c > > diff --git a/tests/tcg/plugins/inject.c b/tests/tcg/plugins/inject.c > new file mode 100644 > index 0000000000..9edc2cd34e > --- /dev/null > +++ b/tests/tcg/plugins/inject.c Could we find a better name? > @@ -0,0 +1,206 @@ > +/* > + * Copyright (C) 2024, Rowan Hart <rowanbhart@gmail.com> > + * > + * License: GNU GPL, version 2 or later. > + * See the COPYING file in the top-level directory. > + */ We can add a comment here about what the plugin is doing. > +#include "glib.h" > +#include <assert.h> > +#include <inttypes.h> > +#include <stdio.h> > +#include <stdlib.h> > +#include <string.h> > +#include <unistd.h> > + > +#include <qemu-plugin.h> > + > +/* > + * Specifies a Hypercall for an architecture: > + * > + * - Architecture name > + * - Whether it is enabled > + * - The hypercall instruction > + * - The register names to pass the hypercall # and args > + */ > +struct HypercallSpec { > + const char *name; > + const bool enabled; > + const char *hypercall; > + const bool little_endian; > + const char *num_reg; > + const char *arg0_reg; > + const char *arg1_reg; > +}; > + > +static const struct HypercallSpec *hypercall_spec; > + > +static const struct HypercallSpec hypercall_specs[] = { > + { "aarch64", false, NULL, true, 0, 0, 0 }, > + { "aarch64_be", false, NULL, false, 0, 0, 0 }, > + { "alpha", false, NULL, true, 0, 0, 0 }, > + { "arm", false, NULL, true, 0, 0, 0 }, > + { "armeb", false, NULL, false, 0, 0, 0 }, > + { "avr", false, NULL, true, 0, 0, 0 }, > + { "hexagon", false, NULL, true, 0, 0, 0 }, > + { "hppa", false, NULL, false, 0, 0, 0 }, > + { "i386", false, NULL, true, 0, 0, 0 }, > + { "loongarch64", false, NULL, true, 0, 0, 0 }, > + { "m68k", false, NULL, false, 0, 0, 0 }, > + { "microblaze", false, NULL, false, 0, 0, 0 }, > + { "microblazeel", false, NULL, true, 0, 0, 0 }, > + { "mips", false, NULL, false, 0, 0, 0 }, > + { "mips64", false, NULL, false, 0, 0, 0 }, > + { "mips64el", false, NULL, true, 0, 0, 0 }, > + { "mipsel", false, NULL, true, 0, 0, 0 }, > + { "mipsn32", false, NULL, false, 0, 0, 0 }, > + { "mipsn32el", false, NULL, true, 0, 0, 0 }, > + { "or1k", false, NULL, false, 0, 0, 0 }, > + { "ppc", false, NULL, false, 0, 0, 0 }, > + { "ppc64", false, NULL, false, 0, 0, 0 }, > + { "ppc64le", false, NULL, true, 0, 0, 0 }, > + { "riscv32", false, NULL, true, 0, 0, 0 }, > + { "riscv64", false, NULL, true, 0, 0, 0 }, > + { "rx", false, NULL, true, 0, 0, 0 }, > + { "s390x", false, NULL, false, 0, 0, 0 }, > + { "sh4", false, NULL, true, 0, 0, 0 }, > + { "sh4eb", false, NULL, false, 0, 0, 0 }, > + { "sparc", false, NULL, false, 0, 0, 0 }, > + { "sparc32plus", false, NULL, false, 0, 0, 0 }, > + { "sparc64", false, NULL, false, 0, 0, 0 }, > + { "tricore", false, NULL, true, 0, 0, 0 }, > + { "x86_64", true, "\x0f\xa2", true, "rax", "rdi", "rsi" }, > + { "xtensa", false, NULL, true, 0, 0, 0 }, > + { "xtensaeb", false, NULL, false, 0, 0, 0 }, > + { NULL, false, NULL, false, 0, 0, 0 }, > +}; > + > +QEMU_PLUGIN_EXPORT int qemu_plugin_version = QEMU_PLUGIN_VERSION; > + > +/* > + * Returns a handle to a register with a given name, or NULL if there is no > + * such register. > + */ > +static struct qemu_plugin_register *get_register(const char *name) > +{ > + GArray *registers = qemu_plugin_get_registers(); > + > + struct qemu_plugin_register *handle = NULL; > + > + qemu_plugin_reg_descriptor *reg_descriptors = > + (qemu_plugin_reg_descriptor *)registers->data; > + > + for (size_t i = 0; i < registers->len; i++) { > + if (!strcmp(reg_descriptors[i].name, name)) { > + handle = reg_descriptors[i].handle; > + } > + } > + > + g_array_free(registers, true); > + > + return handle; > +} > + > +/* > + * Transforms a byte array with at most 8 entries into a uint64_t > + * depending on the target machine's endianness. > + */ > +static uint64_t byte_array_to_uint64(GByteArray *buf) > +{ > + uint64_t value = 0; > + if (hypercall_spec->little_endian) { > + for (int i = 0; i < buf->len && i < sizeof(uint64_t); i++) { > + value |= ((uint64_t)buf->data[i]) << (i * 8); > + } > + } else { > + for (int i = 0; i < buf->len && i < sizeof(uint64_t); i++) { > + value |= ((uint64_t)buf->data[i]) << ((buf->len - 1 - i) * 8); > + } > + } > + return value; > +} > + > +/* > + * Handle a "hyperacll" instruction, which has some special meaning for this > + * plugin. > + */ > +static void hypercall(unsigned int vcpu_index, void *userdata) > +{ > + uint64_t num = 0, arg0 = 0, arg1 = 0; > + GByteArray *buf = g_byte_array_new(); > + qemu_plugin_read_register(get_register(hypercall_spec->num_reg), buf); > + num = byte_array_to_uint64(buf); > + > + g_byte_array_set_size(buf, 0); > + qemu_plugin_read_register(get_register(hypercall_spec->arg0_reg), buf); > + arg0 = byte_array_to_uint64(buf); > + > + g_byte_array_set_size(buf, 0); > + qemu_plugin_read_register(get_register(hypercall_spec->arg1_reg), buf); > + arg1 = byte_array_to_uint64(buf); > + > + switch (num) { > + /* > + * The write hypercall (#0x13371337) tells the plugin to write random bytes > + * of a given size into the memory of the emulated system at a particular > + * vaddr > + */ One challenge with picking a random value, is how to ensure this pattern has no other meaning for all architectures? I'm not sure we can find a single pattern of bytes that works for all arch, even though that would be definitely stylish :). In more, it seems that we are reinventing the syscall interface, while we already have it. But as the current instrumentation only works for user-mode, having a specific hypercall interface might be worth it for plugins, so system mode could benefit from it too. The work done here could serve later to define a proper interface. > + case 0x13371337: { > + GByteArray *data = g_byte_array_new(); > + g_byte_array_set_size(data, arg1); > + for (uint64_t i = 0; i < arg1; i++) { > + data->data[i] = (uint8_t)g_random_int(); > + } > + qemu_plugin_write_memory_vaddr(arg0, data); > + break; > + } > + default: > + break; > + } > + > + g_byte_array_free(buf, TRUE); > +} > + > +/* > + * Callback on translation of a translation block. > + */ > +static void vcpu_tb_trans(qemu_plugin_id_t id, struct qemu_plugin_tb *tb) > +{ > + for (size_t i = 0; i < qemu_plugin_tb_n_insns(tb); i++) { > + struct qemu_plugin_insn *insn = qemu_plugin_tb_get_insn(tb, i); > + GByteArray *insn_data = g_byte_array_new(); > + size_t insn_len = qemu_plugin_insn_size(insn); > + g_byte_array_set_size(insn_data, insn_len); > + qemu_plugin_insn_data(insn, insn_data->data, insn_data->len); > + if (!memcmp(insn_data->data, hypercall_spec->hypercall, insn_data->len)) { > + qemu_plugin_register_vcpu_insn_exec_cb(insn, hypercall, > + QEMU_PLUGIN_CB_R_REGS, NULL); > + } > + g_byte_array_free(insn_data, true); > + } > +} > + > + > +/* > + * Called when the plugin is installed > + */ > +QEMU_PLUGIN_EXPORT int qemu_plugin_install(qemu_plugin_id_t id, > + const qemu_info_t *info, int argc, > + char **argv) > +{ > + hypercall_spec = &hypercall_specs[0]; > + while (hypercall_spec->name != NULL) { > + if (!strcmp(hypercall_spec->name, info->target_name)) { > + break; > + } > + hypercall_spec++; > + } > + > + if (hypercall_spec->name == NULL) { > + qemu_plugin_outs("Error: no hypercall spec."); > + return -1; > + } > + > + qemu_plugin_register_vcpu_tb_trans_cb(id, vcpu_tb_trans); > + > + return 0; > +} > diff --git a/tests/tcg/plugins/meson.build b/tests/tcg/plugins/meson.build > index f847849b1b..96782416d3 100644 > --- a/tests/tcg/plugins/meson.build > +++ b/tests/tcg/plugins/meson.build > @@ -1,6 +1,6 @@ > t = [] > if get_option('plugins') > - foreach i : ['bb', 'empty', 'inline', 'insn', 'mem', 'syscall'] > + foreach i : ['bb', 'empty', 'inline', 'insn', 'mem', 'syscall', 'inject'] > if host_os == 'windows' > t += shared_module(i, files(i + '.c') + '../../../contrib/plugins/win32_linker.c', > include_directories: '../../../include/qemu', > diff --git a/tests/tcg/x86_64/Makefile.target b/tests/tcg/x86_64/Makefile.target > index d6dff559c7..7c8e21636d 100644 > --- a/tests/tcg/x86_64/Makefile.target > +++ b/tests/tcg/x86_64/Makefile.target > @@ -18,6 +18,7 @@ X86_64_TESTS += adox > X86_64_TESTS += test-1648 > X86_64_TESTS += test-2175 > X86_64_TESTS += cross-modifying-code > +X86_64_TESTS += inject-target > TESTS=$(MULTIARCH_TESTS) $(X86_64_TESTS) test-x86_64 > else > TESTS=$(MULTIARCH_TESTS) > diff --git a/tests/tcg/x86_64/inject-target.c b/tests/tcg/x86_64/inject-target.c > new file mode 100644 > index 0000000000..c886e5ab8b > --- /dev/null > +++ b/tests/tcg/x86_64/inject-target.c > @@ -0,0 +1,27 @@ > +#include <stddef.h> > +#include <stdint.h> > +#include <stdio.h> > + > +#define hypercall(num, arg0, arg1) \ > + unsigned int _a __attribute__((unused)) = 0; \ > + unsigned int _b __attribute__((unused)) = 0; \ > + unsigned int _c __attribute__((unused)) = 0; \ > + unsigned int _d __attribute__((unused)) = 0; \ > + __asm__ __volatile__("cpuid\n\t" \ > + : "=a"(_a), "=b"(_b), "=c"(_c), "=d"(_d) \ > + : "a"(num), "D"(arg0), "S"(arg1)); > + > +int main(void) > +{ > + uint16_t value; > + > + for (size_t i = 0; i < 1000000; i++) { > + hypercall(0x13371337, &value, sizeof(value)); > + if (value == 0x1337) { > + printf("Victory!\n"); > + return 0; > + } > + } > + return 1; > +} > +
>> +++ b/tests/tcg/plugins/inject.c > > Could we find a better name? For sure, maybe "hypercalls.c" since that's really what it's mostly about. >> @@ -0,0 +1,206 @@ >> +/* >> + * Copyright (C) 2024, Rowan Hart <rowanbhart@gmail.com> >> + * >> + * License: GNU GPL, version 2 or later. >> + * See the COPYING file in the top-level directory. >> + */ > > We can add a comment here about what the plugin is doing. Will do! > One challenge with picking a random value, is how to ensure this pattern has no other meaning for all architectures? I'm not sure we can find a single pattern of bytes that works for all arch, even though that would be definitely stylish :). > > In more, it seems that we are reinventing the syscall interface, while we already have it. But as the current instrumentation only works for user-mode, having a specific hypercall interface might be worth it for plugins, so system mode could benefit from it too. > > The work done here could serve later to define a proper interface. I'll see what I can do about this. SIMICS supports many architectures and has a "magic instruction" interface[0] (basically hypercalls) and has these instructions defined per-architecture in a way that at minimum there are 12 values available which work on every architecture the simulator supports. QEMU supports more architectures than SIMICS but I think we could start there and follow a similar approach. [0]: https://intel.github.io/tsffs/simics/simics-user-guide/breakpoints.html#Magic-Breakpoints -Rowan
On 12/6/24 17:02, Rowan Hart wrote: >>> +++ b/tests/tcg/plugins/inject.c >> >> Could we find a better name? > > For sure, maybe "hypercalls.c" since that's really what it's mostly about. > Sounds good. >>> @@ -0,0 +1,206 @@ >>> +/* >>> + * Copyright (C) 2024, Rowan Hart <rowanbhart@gmail.com> >>> + * >>> + * License: GNU GPL, version 2 or later. >>> + * See the COPYING file in the top-level directory. >>> + */ >> >> We can add a comment here about what the plugin is doing. > > Will do! > >> One challenge with picking a random value, is how to ensure this pattern has no other meaning for all architectures? I'm not sure we can find a single pattern of bytes that works for all arch, even though that would be definitely stylish :). >> >> In more, it seems that we are reinventing the syscall interface, while we already have it. But as the current instrumentation only works for user-mode, having a specific hypercall interface might be worth it for plugins, so system mode could benefit from it too. >> >> The work done here could serve later to define a proper interface. > > > I'll see what I can do about this. SIMICS supports many architectures and has a > "magic instruction" interface[0] (basically hypercalls) and has these > instructions defined per-architecture in a way that at minimum there are 12 > values available which work on every architecture the simulator supports. QEMU > supports more architectures than SIMICS but I think we could start there and > follow a similar approach. > > [0]: > https://intel.github.io/tsffs/simics/simics-user-guide/breakpoints.html#Magic-Breakpoints > Looks like a good model to reuse if we want to implement something similar. > -Rowan
diff --git a/tests/tcg/plugins/inject.c b/tests/tcg/plugins/inject.c new file mode 100644 index 0000000000..9edc2cd34e --- /dev/null +++ b/tests/tcg/plugins/inject.c @@ -0,0 +1,206 @@ +/* + * Copyright (C) 2024, Rowan Hart <rowanbhart@gmail.com> + * + * License: GNU GPL, version 2 or later. + * See the COPYING file in the top-level directory. + */ +#include "glib.h" +#include <assert.h> +#include <inttypes.h> +#include <stdio.h> +#include <stdlib.h> +#include <string.h> +#include <unistd.h> + +#include <qemu-plugin.h> + +/* + * Specifies a Hypercall for an architecture: + * + * - Architecture name + * - Whether it is enabled + * - The hypercall instruction + * - The register names to pass the hypercall # and args + */ +struct HypercallSpec { + const char *name; + const bool enabled; + const char *hypercall; + const bool little_endian; + const char *num_reg; + const char *arg0_reg; + const char *arg1_reg; +}; + +static const struct HypercallSpec *hypercall_spec; + +static const struct HypercallSpec hypercall_specs[] = { + { "aarch64", false, NULL, true, 0, 0, 0 }, + { "aarch64_be", false, NULL, false, 0, 0, 0 }, + { "alpha", false, NULL, true, 0, 0, 0 }, + { "arm", false, NULL, true, 0, 0, 0 }, + { "armeb", false, NULL, false, 0, 0, 0 }, + { "avr", false, NULL, true, 0, 0, 0 }, + { "hexagon", false, NULL, true, 0, 0, 0 }, + { "hppa", false, NULL, false, 0, 0, 0 }, + { "i386", false, NULL, true, 0, 0, 0 }, + { "loongarch64", false, NULL, true, 0, 0, 0 }, + { "m68k", false, NULL, false, 0, 0, 0 }, + { "microblaze", false, NULL, false, 0, 0, 0 }, + { "microblazeel", false, NULL, true, 0, 0, 0 }, + { "mips", false, NULL, false, 0, 0, 0 }, + { "mips64", false, NULL, false, 0, 0, 0 }, + { "mips64el", false, NULL, true, 0, 0, 0 }, + { "mipsel", false, NULL, true, 0, 0, 0 }, + { "mipsn32", false, NULL, false, 0, 0, 0 }, + { "mipsn32el", false, NULL, true, 0, 0, 0 }, + { "or1k", false, NULL, false, 0, 0, 0 }, + { "ppc", false, NULL, false, 0, 0, 0 }, + { "ppc64", false, NULL, false, 0, 0, 0 }, + { "ppc64le", false, NULL, true, 0, 0, 0 }, + { "riscv32", false, NULL, true, 0, 0, 0 }, + { "riscv64", false, NULL, true, 0, 0, 0 }, + { "rx", false, NULL, true, 0, 0, 0 }, + { "s390x", false, NULL, false, 0, 0, 0 }, + { "sh4", false, NULL, true, 0, 0, 0 }, + { "sh4eb", false, NULL, false, 0, 0, 0 }, + { "sparc", false, NULL, false, 0, 0, 0 }, + { "sparc32plus", false, NULL, false, 0, 0, 0 }, + { "sparc64", false, NULL, false, 0, 0, 0 }, + { "tricore", false, NULL, true, 0, 0, 0 }, + { "x86_64", true, "\x0f\xa2", true, "rax", "rdi", "rsi" }, + { "xtensa", false, NULL, true, 0, 0, 0 }, + { "xtensaeb", false, NULL, false, 0, 0, 0 }, + { NULL, false, NULL, false, 0, 0, 0 }, +}; + +QEMU_PLUGIN_EXPORT int qemu_plugin_version = QEMU_PLUGIN_VERSION; + +/* + * Returns a handle to a register with a given name, or NULL if there is no + * such register. + */ +static struct qemu_plugin_register *get_register(const char *name) +{ + GArray *registers = qemu_plugin_get_registers(); + + struct qemu_plugin_register *handle = NULL; + + qemu_plugin_reg_descriptor *reg_descriptors = + (qemu_plugin_reg_descriptor *)registers->data; + + for (size_t i = 0; i < registers->len; i++) { + if (!strcmp(reg_descriptors[i].name, name)) { + handle = reg_descriptors[i].handle; + } + } + + g_array_free(registers, true); + + return handle; +} + +/* + * Transforms a byte array with at most 8 entries into a uint64_t + * depending on the target machine's endianness. + */ +static uint64_t byte_array_to_uint64(GByteArray *buf) +{ + uint64_t value = 0; + if (hypercall_spec->little_endian) { + for (int i = 0; i < buf->len && i < sizeof(uint64_t); i++) { + value |= ((uint64_t)buf->data[i]) << (i * 8); + } + } else { + for (int i = 0; i < buf->len && i < sizeof(uint64_t); i++) { + value |= ((uint64_t)buf->data[i]) << ((buf->len - 1 - i) * 8); + } + } + return value; +} + +/* + * Handle a "hyperacll" instruction, which has some special meaning for this + * plugin. + */ +static void hypercall(unsigned int vcpu_index, void *userdata) +{ + uint64_t num = 0, arg0 = 0, arg1 = 0; + GByteArray *buf = g_byte_array_new(); + qemu_plugin_read_register(get_register(hypercall_spec->num_reg), buf); + num = byte_array_to_uint64(buf); + + g_byte_array_set_size(buf, 0); + qemu_plugin_read_register(get_register(hypercall_spec->arg0_reg), buf); + arg0 = byte_array_to_uint64(buf); + + g_byte_array_set_size(buf, 0); + qemu_plugin_read_register(get_register(hypercall_spec->arg1_reg), buf); + arg1 = byte_array_to_uint64(buf); + + switch (num) { + /* + * The write hypercall (#0x13371337) tells the plugin to write random bytes + * of a given size into the memory of the emulated system at a particular + * vaddr + */ + case 0x13371337: { + GByteArray *data = g_byte_array_new(); + g_byte_array_set_size(data, arg1); + for (uint64_t i = 0; i < arg1; i++) { + data->data[i] = (uint8_t)g_random_int(); + } + qemu_plugin_write_memory_vaddr(arg0, data); + break; + } + default: + break; + } + + g_byte_array_free(buf, TRUE); +} + +/* + * Callback on translation of a translation block. + */ +static void vcpu_tb_trans(qemu_plugin_id_t id, struct qemu_plugin_tb *tb) +{ + for (size_t i = 0; i < qemu_plugin_tb_n_insns(tb); i++) { + struct qemu_plugin_insn *insn = qemu_plugin_tb_get_insn(tb, i); + GByteArray *insn_data = g_byte_array_new(); + size_t insn_len = qemu_plugin_insn_size(insn); + g_byte_array_set_size(insn_data, insn_len); + qemu_plugin_insn_data(insn, insn_data->data, insn_data->len); + if (!memcmp(insn_data->data, hypercall_spec->hypercall, insn_data->len)) { + qemu_plugin_register_vcpu_insn_exec_cb(insn, hypercall, + QEMU_PLUGIN_CB_R_REGS, NULL); + } + g_byte_array_free(insn_data, true); + } +} + + +/* + * Called when the plugin is installed + */ +QEMU_PLUGIN_EXPORT int qemu_plugin_install(qemu_plugin_id_t id, + const qemu_info_t *info, int argc, + char **argv) +{ + hypercall_spec = &hypercall_specs[0]; + while (hypercall_spec->name != NULL) { + if (!strcmp(hypercall_spec->name, info->target_name)) { + break; + } + hypercall_spec++; + } + + if (hypercall_spec->name == NULL) { + qemu_plugin_outs("Error: no hypercall spec."); + return -1; + } + + qemu_plugin_register_vcpu_tb_trans_cb(id, vcpu_tb_trans); + + return 0; +} diff --git a/tests/tcg/plugins/meson.build b/tests/tcg/plugins/meson.build index f847849b1b..96782416d3 100644 --- a/tests/tcg/plugins/meson.build +++ b/tests/tcg/plugins/meson.build @@ -1,6 +1,6 @@ t = [] if get_option('plugins') - foreach i : ['bb', 'empty', 'inline', 'insn', 'mem', 'syscall'] + foreach i : ['bb', 'empty', 'inline', 'insn', 'mem', 'syscall', 'inject'] if host_os == 'windows' t += shared_module(i, files(i + '.c') + '../../../contrib/plugins/win32_linker.c', include_directories: '../../../include/qemu', diff --git a/tests/tcg/x86_64/Makefile.target b/tests/tcg/x86_64/Makefile.target index d6dff559c7..7c8e21636d 100644 --- a/tests/tcg/x86_64/Makefile.target +++ b/tests/tcg/x86_64/Makefile.target @@ -18,6 +18,7 @@ X86_64_TESTS += adox X86_64_TESTS += test-1648 X86_64_TESTS += test-2175 X86_64_TESTS += cross-modifying-code +X86_64_TESTS += inject-target TESTS=$(MULTIARCH_TESTS) $(X86_64_TESTS) test-x86_64 else TESTS=$(MULTIARCH_TESTS) diff --git a/tests/tcg/x86_64/inject-target.c b/tests/tcg/x86_64/inject-target.c new file mode 100644 index 0000000000..c886e5ab8b --- /dev/null +++ b/tests/tcg/x86_64/inject-target.c @@ -0,0 +1,27 @@ +#include <stddef.h> +#include <stdint.h> +#include <stdio.h> + +#define hypercall(num, arg0, arg1) \ + unsigned int _a __attribute__((unused)) = 0; \ + unsigned int _b __attribute__((unused)) = 0; \ + unsigned int _c __attribute__((unused)) = 0; \ + unsigned int _d __attribute__((unused)) = 0; \ + __asm__ __volatile__("cpuid\n\t" \ + : "=a"(_a), "=b"(_b), "=c"(_c), "=d"(_d) \ + : "a"(num), "D"(arg0), "S"(arg1)); + +int main(void) +{ + uint16_t value; + + for (size_t i = 0; i < 1000000; i++) { + hypercall(0x13371337, &value, sizeof(value)); + if (value == 0x1337) { + printf("Victory!\n"); + return 0; + } + } + return 1; +} +
From: novafacing <rowanbhart@gmail.com> --- tests/tcg/plugins/inject.c | 206 +++++++++++++++++++++++++++++++ tests/tcg/plugins/meson.build | 2 +- tests/tcg/x86_64/Makefile.target | 1 + tests/tcg/x86_64/inject-target.c | 27 ++++ 4 files changed, 235 insertions(+), 1 deletion(-) create mode 100644 tests/tcg/plugins/inject.c create mode 100644 tests/tcg/x86_64/inject-target.c