mirror of
https://gcc.gnu.org/git/gcc.git
synced 2024-11-30 15:24:07 +08:00
557dbbac8e
Currently, almost all of the shared libraries of MIPS, rely on $t9 to get the address of current function, instead of PCREL instructions, even on MIPSr6. So we have to set $t9 properly. To get the address of preemptible function, we need the help of GOT. MIPS/O32 has .cpload, which can help to generate 3 instructions to get GOT. For __mips64, we can get GOT by: lui $t8, %hi(%neg(%gp_rel(SANITIZER_STRINGIFY(TRAMPOLINE(func))))) daddu $t8, $t8, $t9 daddiu $t8, $t8, %hi(%neg(%gp_rel(SANITIZER_STRINGIFY(TRAMPOLINE(func))))) And then get the address of __interceptor_func, and jump to it ld $t9, %got_disp(_interceptor" SANITIZER_STRINGIFY(func) ")($t8) jr $t9 Upstream-Commit: 0a64367a72f1634321f5051221f05f2f364bd882 libsanitizer * interception/interception.h (substitution_##func_name): Use macro C_ASM_TAIL_CALL. * sanitizer_common/sanitizer_asm.h: Define C_ASM_TAIL_CALL for MIPS with help of t9. |
||
|---|---|---|
| .. | ||
| interception_linux.cpp | ||
| interception_linux.h | ||
| interception_mac.cpp | ||
| interception_mac.h | ||
| interception_type_test.cpp | ||
| interception_win.cpp | ||
| interception_win.h | ||
| interception.h | ||
| Makefile.am | ||
| Makefile.in | ||