From: Philippe Mathieu-Daudé Date: Mon, 11 Sep 2017 20:49:36 +0000 (-0300) Subject: tcg/ppc: disable atomic write check on ppc32 X-Git-Url: http://git.maquefel.me/?a=commitdiff_plain;h=ba026602a673677735428e64e621cdf95b5cd6d9;p=qemu.git tcg/ppc: disable atomic write check on ppc32 This fixes building for ppc64 on ppc32 (changed in 5964fca8a12c): tcg/ppc/tcg-target.inc.c: In function 'tb_target_set_jmp_target': include/qemu/compiler.h:86:30: error: static assertion failed: \ "not expecting: sizeof(*(uint64_t *)jmp_addr) > ATOMIC_REG_SIZE" QEMU_BUILD_BUG_ON(sizeof(*ptr) > ATOMIC_REG_SIZE); \ ^ tcg/ppc/tcg-target.inc.c:1377:9: note: in expansion of macro 'atomic_set' atomic_set((uint64_t *)jmp_addr, pair); ^ Suggested-by: Richard Henderson Signed-off-by: Philippe Mathieu-Daudé Message-Id: <20170911204936.5020-1-f4bug@amsat.org> [rth: Added commentary requested by pmm.] Signed-off-by: Richard Henderson --- diff --git a/tcg/ppc/tcg-target.inc.c b/tcg/ppc/tcg-target.inc.c index 21d764c102..3c9355844a 100644 --- a/tcg/ppc/tcg-target.inc.c +++ b/tcg/ppc/tcg-target.inc.c @@ -1374,7 +1374,9 @@ void tb_target_set_jmp_target(uintptr_t tc_ptr, uintptr_t jmp_addr, pair = (uint64_t)i2 << 32 | i1; #endif - atomic_set((uint64_t *)jmp_addr, pair); + /* As per the enclosing if, this is ppc64. Avoid the _Static_assert + within atomic_set that would fail to build a ppc32 host. */ + atomic_set__nocheck((uint64_t *)jmp_addr, pair); flush_icache_range(jmp_addr, jmp_addr + 8); } else { intptr_t diff = addr - jmp_addr;