From 1367ff497aa5200970e555bf4cce07467c3e3652 Mon Sep 17 00:00:00 2001 From: Stefan Weil Date: Sun, 18 Mar 2012 23:16:02 +0100 Subject: Add support for target helper functions which don't return MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Most functions which handle exceptions don't return. With a compiler attribute (added by QEMU_NORETURN), gcc can optimize the code. Signed-off-by: Stefan Weil Reviewed-by: Andreas Färber Signed-off-by: Blue Swirl --- def-helper.h | 7 +++++++ 1 file changed, 7 insertions(+) (limited to 'def-helper.h') diff --git a/def-helper.h b/def-helper.h index 0e70c31bc4..b98ff69e4e 100644 --- a/def-helper.h +++ b/def-helper.h @@ -39,6 +39,7 @@ #endif #define dh_alias_ptr ptr #define dh_alias_void void +#define dh_alias_noreturn noreturn #define dh_alias_env ptr #define dh_alias(t) glue(dh_alias_, t) @@ -52,36 +53,42 @@ #define dh_ctype_tl target_ulong #define dh_ctype_ptr void * #define dh_ctype_void void +#define dh_ctype_noreturn void QEMU_NORETURN #define dh_ctype_env CPUArchState * #define dh_ctype(t) dh_ctype_##t /* We can't use glue() here because it falls foul of C preprocessor recursive expansion rules. */ #define dh_retvar_decl0_void void +#define dh_retvar_decl0_noreturn void #define dh_retvar_decl0_i32 TCGv_i32 retval #define dh_retvar_decl0_i64 TCGv_i64 retval #define dh_retvar_decl0_ptr TCGv_ptr retval #define dh_retvar_decl0(t) glue(dh_retvar_decl0_, dh_alias(t)) #define dh_retvar_decl_void +#define dh_retvar_decl_noreturn #define dh_retvar_decl_i32 TCGv_i32 retval, #define dh_retvar_decl_i64 TCGv_i64 retval, #define dh_retvar_decl_ptr TCGv_ptr retval, #define dh_retvar_decl(t) glue(dh_retvar_decl_, dh_alias(t)) #define dh_retvar_void TCG_CALL_DUMMY_ARG +#define dh_retvar_noreturn TCG_CALL_DUMMY_ARG #define dh_retvar_i32 GET_TCGV_i32(retval) #define dh_retvar_i64 GET_TCGV_i64(retval) #define dh_retvar_ptr GET_TCGV_ptr(retval) #define dh_retvar(t) glue(dh_retvar_, dh_alias(t)) #define dh_is_64bit_void 0 +#define dh_is_64bit_noreturn 0 #define dh_is_64bit_i32 0 #define dh_is_64bit_i64 1 #define dh_is_64bit_ptr (TCG_TARGET_REG_BITS == 64) #define dh_is_64bit(t) glue(dh_is_64bit_, dh_alias(t)) #define dh_is_signed_void 0 +#define dh_is_signed_noreturn 0 #define dh_is_signed_i32 0 #define dh_is_signed_s32 1 #define dh_is_signed_i64 0 -- cgit v1.2.3