Respect it to avoid linking TBs together.
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Richard Henderson <rth@twiddle.net>
/* see if we can patch the calling TB. When the TB
spans two pages, we cannot safely do a direct
jump. */
- if (next_tb != 0 && tb->page_addr[1] == -1) {
+ if (next_tb != 0 && tb->page_addr[1] == -1
+ && !qemu_loglevel_mask(CPU_LOG_TB_NOCHAIN)) {
tb_add_jump((TranslationBlock *)(next_tb & ~TB_EXIT_MASK),
next_tb & TB_EXIT_MASK, tb);
}
#define LOG_UNIMP (1 << 10)
#define LOG_GUEST_ERROR (1 << 11)
#define CPU_LOG_MMU (1 << 12)
+#define CPU_LOG_TB_NOCHAIN (1 << 13)
/* Returns true if a bit is set in the current loglevel mask
*/
{ LOG_GUEST_ERROR, "guest_errors",
"log when the guest OS does something invalid (eg accessing a\n"
"non-existent register)" },
+ { CPU_LOG_TB_NOCHAIN, "nochain",
+ "do not chain compiled TBs so that \"exec\" and \"cpu\" show\n"
+ "complete traces" },
{ 0, NULL, NULL },
};