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| author | Andy Lutomirski <luto@amacapital.net> | 2014-07-03 12:31:50 -0700 |
|---|---|---|
| committer | Andy Lutomirski <luto@amacapital.net> | 2014-07-03 12:31:50 -0700 |
| commit | 30d35d95f576fb266fc7537fa8c59c04755f7fa0 (patch) | |
| tree | 3665b0e2c03a9b1dff11682d021def1dde324b55 | |
| parent | aff7a91f46cfb8d30e70f2cfc52bb9f951ea4db1 (diff) | |
| download | misc-tests-30d35d95f576fb266fc7537fa8c59c04755f7fa0.tar.gz | |
Add syscall_exit_regs
| -rw-r--r-- | .gitignore | 8 | ||||
| -rw-r--r-- | Makefile | 2 | ||||
| -rw-r--r-- | syscall_exit_regs.c | 19 |
3 files changed, 22 insertions, 7 deletions
@@ -1,13 +1,9 @@ -dump-vdso -dump-vvar dump-vsyscall -timing_test_32 -timing_test_64 time-warp-test evil-clock-test -test_vsyscall_32 -test_vsyscall_64 context_switch_latency kernel_pf user_visible_state *~ +*_32 +*_64 @@ -4,7 +4,7 @@ SIMPLE_C_TARGETS := dump-vdso dump-vvar dump-vsyscall context_switch_latency ker SIMPLE_CC_TARGETS := evil-clock-test -SPLIT_C_TARGETS := dump-vdso dump-vvar +SPLIT_C_TARGETS := dump-vdso dump-vvar syscall_exit_regs SPLIT_CC_TARGETS := timing_test test_vsyscall ALL_TARGETS := $(SIMPLE_C_TARGETS) $(SIMPLE_CC_TARGETS) $(SPLIT_C_TARGETS:%=%_64) $(SPLIT_CC_TARGETS:%=%_64) $(SPLIT_C_TARGETS:%=%_32) $(SPLIT_CC_TARGETS:%=%_32) diff --git a/syscall_exit_regs.c b/syscall_exit_regs.c new file mode 100644 index 0000000..4c7f97e --- /dev/null +++ b/syscall_exit_regs.c @@ -0,0 +1,19 @@ +#include <stdio.h> + +int main() +{ + extern const char syscall_rip[]; + unsigned long rcx = 1; + unsigned long orig_rcx = rcx; + asm ("mov $-1, %%eax\n\t" + "syscall\n\t" + "syscall_rip:" + : "+c" (rcx) : : +#ifdef __x86_64__ + "r11" +#endif + ); + printf("syscall: RCX = %lX RIP = %lX orig RCX = %lx\n", + rcx, (unsigned long)syscall_rip, orig_rcx); + return 0; +} |