/*------------------------------------------------------------*/
-/*--- The dispatch loop. ---*/
+/*--- ---*/
+/*--- The dispatch loop. VG_(run_innerloop) is used to ---*/
+/*--- run all translations except no-redir ones. ---*/
+/*--- ---*/
/*------------------------------------------------------------*/
/*----------------------------------------------------*/
addi 1,1,496 /* stack_size */
blr
+
+/*------------------------------------------------------------*/
+/*--- ---*/
+/*--- A special dispatcher, for running no-redir ---*/
+/*--- translations. Just runs the given translation once. ---*/
+/*--- ---*/
+/*------------------------------------------------------------*/
+
+/* signature:
+void VG_(run_a_noredir_translation) ( UWord* argblock );
+*/
+
+/* Run a no-redir translation. argblock points to 4 UWords, 2 to carry args
+ and 2 to carry results:
+ 0: input: ptr to translation
+ 1: input: ptr to guest state
+ 2: output: next guest PC
+ 3: output: guest state pointer afterwards (== thread return code)
+*/
+.align 16
+.global VG_(run_a_noredir_translation)
+VG_(run_a_noredir_translation):
+ /* save callee-save int regs, & lr */
+ stwu 1,-256(1)
+ stw 14,128(1)
+ stw 15,132(1)
+ stw 16,136(1)
+ stw 17,140(1)
+ stw 18,144(1)
+ stw 19,148(1)
+ stw 20,152(1)
+ stw 21,156(1)
+ stw 22,160(1)
+ stw 23,164(1)
+ stw 24,168(1)
+ stw 25,172(1)
+ stw 26,176(1)
+ stw 27,180(1)
+ stw 28,184(1)
+ stw 29,188(1)
+ stw 30,192(1)
+ stw 31,196(1)
+ mflr 31
+ stw 31,200(1)
+
+ stw 3,204(1)
+ lwz 31,4(3)
+ lwz 30,0(3)
+ mtlr 30
+ blrl
+
+ lwz 4,204(1)
+ stw 3, 8(4)
+ stw 31,12(4)
+
+ lwz 14,128(1)
+ lwz 15,132(1)
+ lwz 16,136(1)
+ lwz 17,140(1)
+ lwz 18,144(1)
+ lwz 19,148(1)
+ lwz 20,152(1)
+ lwz 21,156(1)
+ lwz 22,160(1)
+ lwz 23,164(1)
+ lwz 24,168(1)
+ lwz 25,172(1)
+ lwz 26,176(1)
+ lwz 27,180(1)
+ lwz 28,184(1)
+ lwz 29,188(1)
+ lwz 30,192(1)
+ lwz 31,200(1)
+ mtlr 31
+ lwz 31,196(1)
+ addi 1,1,256
+ blr
+
+
/* Let the linker know we don't need an executable stack */
.section .note.GNU-stack,"",@progbits
}
}
-/* ---------------------------------------------------------------------
- Helper stuff for managing no-redirection translations.
- ------------------------------------------------------------------ */
-
-/* Run a translation. argblock points to 4 UWords, 2 to carry args
- and 2 to carry results:
- 0: input: ptr to translation
- 1: input: ptr to guest state
- 2: output: next guest PC
- 3: output: guest state pointer afterwards (== thread return code)
-*/
-extern UWord run_a_translation ( UWord* argblock );
-#if defined(VGP_x86_linux)
-#elif defined(VGP_amd64_linux)
-#elif defined(VGP_ppc32_linux)
-asm("\n"
-".text\n"
-"run_a_translation:\n"
-" stwu 1,-256(1)\n"
-" stw 14,128(1)\n"
-" stw 15,132(1)\n"
-" stw 16,136(1)\n"
-" stw 17,140(1)\n"
-" stw 18,144(1)\n"
-" stw 19,148(1)\n"
-" stw 20,152(1)\n"
-" stw 21,156(1)\n"
-" stw 22,160(1)\n"
-" stw 23,164(1)\n"
-" stw 24,168(1)\n"
-" stw 25,172(1)\n"
-" stw 26,176(1)\n"
-" stw 27,180(1)\n"
-" stw 28,184(1)\n"
-" stw 29,188(1)\n"
-" stw 30,192(1)\n"
-" stw 31,196(1)\n"
-" mflr 31\n"
-" stw 31,200(1)\n"
-
-" stw 3,204(1)\n"
-" lwz 31,4(3)\n"
-" lwz 30,0(3)\n"
-" mtlr 30\n"
-" blrl\n"
-
-" lwz 4,204(1)\n"
-" stw 3, 8(4)\n"
-" stw 31,12(4)\n"
-
-" lwz 14,128(1)\n"
-" lwz 15,132(1)\n"
-" lwz 16,136(1)\n"
-" lwz 17,140(1)\n"
-" lwz 18,144(1)\n"
-" lwz 19,148(1)\n"
-" lwz 20,152(1)\n"
-" lwz 21,156(1)\n"
-" lwz 22,160(1)\n"
-" lwz 23,164(1)\n"
-" lwz 24,168(1)\n"
-" lwz 25,172(1)\n"
-" lwz 26,176(1)\n"
-" lwz 27,180(1)\n"
-" lwz 28,184(1)\n"
-" lwz 29,188(1)\n"
-" lwz 30,192(1)\n"
-" lwz 31,200(1)\n"
-" mtlr 31\n"
-" lwz 31,196(1)\n"
-" addi 1,1,256\n"
-" blr\n"
-
-".previous\n"
-);
-#else
-# error "Not implemented"
-#endif
-
-
-/* tid just requested a jump to the noredir version of its current
- program counter. So make up that translation if needed, run it,
- and return the resulting thread return code. */
-static UInt/*trc*/ handle_noredir_jump ( ThreadId tid )
-{
- AddrH hcode = 0;
- Addr ip = VG_(get_IP)(tid);
-
- Bool found = VG_(search_unredir_transtab)( &hcode, ip );
- if (!found) {
- /* Not found; we need to request a translation. */
- if (VG_(translate)( tid, ip, /*debug*/False, 0/*not verbose*/, bbs_done,
- False/*NO REDIRECTION*/ )) {
-
- found = VG_(search_unredir_transtab)( &hcode, ip );
- vg_assert2(found, "unredir translation missing after creation?!");
-
- } else {
- // If VG_(translate)() fails, it's because it had to throw a
- // signal because the client jumped to a bad address. That
- // means that either a signal has been set up for delivery,
- // or the thread has been marked for termination. Either
- // way, we just need to go back into the scheduler loop.
- return VG_TRC_BORING;
- }
-
- }
-
- vg_assert(found);
- vg_assert(hcode != 0);
-
- /* Otherwise run it and return the resulting VG_TRC_* value. */
- return run_noredir_translation( hcode, tid );
-}
-
/* ---------------------------------------------------------------------
The scheduler proper.
}
}
+/* tid just requested a jump to the noredir version of its current
+ program counter. So make up that translation if needed, run it,
+ and return the resulting thread return code. */
+static UInt/*trc*/ handle_noredir_jump ( ThreadId tid )
+{
+ AddrH hcode = 0;
+ Addr ip = VG_(get_IP)(tid);
+
+ Bool found = VG_(search_unredir_transtab)( &hcode, ip );
+ if (!found) {
+ /* Not found; we need to request a translation. */
+ if (VG_(translate)( tid, ip, /*debug*/False, 0/*not verbose*/, bbs_done,
+ False/*NO REDIRECTION*/ )) {
+
+ found = VG_(search_unredir_transtab)( &hcode, ip );
+ vg_assert2(found, "unredir translation missing after creation?!");
+
+ } else {
+ // If VG_(translate)() fails, it's because it had to throw a
+ // signal because the client jumped to a bad address. That
+ // means that either a signal has been set up for delivery,
+ // or the thread has been marked for termination. Either
+ // way, we just need to go back into the scheduler loop.
+ return VG_TRC_BORING;
+ }
+
+ }
+
+ vg_assert(found);
+ vg_assert(hcode != 0);
+
+ /* Otherwise run it and return the resulting VG_TRC_* value. */
+ return run_noredir_translation( hcode, tid );
+}
+
+
/*
Run a thread until it wants to exit.
projects / thirdparty / valgrind.git / commitdiff
