57 lines
2.0 KiB
Diff
57 lines
2.0 KiB
Diff
--- a/linux-user/syscall.c
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+++ b/linux-user/syscall.c
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@@ -17,6 +17,7 @@
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* along with this program; if not, see <http://www.gnu.org/licenses/>.
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*/
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#define _ATFILE_SOURCE
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+#include <dlfcn.h>
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#include "qemu/osdep.h"
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#include "qemu/cutils.h"
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#include "qemu/path.h"
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@@ -9070,6 +9071,17 @@ _syscall5(int, sys_move_mount, int, __from_dfd, const char *, __from_pathname,
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int, __to_dfd, const char *, __to_pathname, unsigned int, flag)
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#endif
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+// g2h For Trampoline
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+static CPUState *_trampoline_g2h_cpu = NULL;
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+static void *_trampoline_g2h(uint32_t guest_addr) {
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+ if (guest_addr == 0) {
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+ return NULL;
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+ }
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+ return g2h(_trampoline_g2h_cpu, guest_addr);
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+}
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+// Trampoline Function
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+typedef void (*_trampoline_t)(typeof(_trampoline_g2h) *g2h, uint32_t id, uint32_t *args);
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+
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/* This is an internal helper for do_syscall so that it is easier
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* to have a single return point, so that actions, such as logging
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* of syscall results, can be performed.
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@@ -9095,6 +9107,27 @@ static abi_long do_syscall1(CPUArchState *cpu_env, int num, abi_long arg1,
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void *p;
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switch(num) {
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+ case 0x1337: {
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+ // Load Trampoline
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+ static _trampoline_t _trampoline = NULL;
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+ if (_trampoline == NULL) {
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+ // Open Library
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+ void *_trampoline_handle = dlopen("libmedia-layer-trampoline.so", RTLD_NOW);
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+ // Load Function
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+ if (_trampoline_handle != NULL) {
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+ _trampoline = dlsym(_trampoline_handle, "trampoline");
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+ }
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+ }
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+ if (_trampoline == NULL) {
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+ // Failed To Load
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+ qemu_log_mask(LOG_UNIMP, "Unable To Load Media Layer Trampoline: %s\n", dlerror());
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+ return -TARGET_ENOSYS;
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+ }
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+ // Call Trampoline
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+ _trampoline_g2h_cpu = cpu;
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+ _trampoline(_trampoline_g2h, arg1, g2h(cpu, arg2));
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+ return 0;
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+ }
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case TARGET_NR_exit:
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/* In old applications this may be used to implement _exit(2).
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However in threaded applications it is used for thread termination,
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