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X-Received-From: 2607:f8b0:4864:20::b42 Subject: [Qemu-devel] [RFC PATCH v4 20/75] target/i386: introduce generic load-store operand X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Jan Bobek , =?UTF-8?q?Alex=20Benn=C3=A9e?= , Richard Henderson Errors-To: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Sender: "Qemu-devel" This operand attempts to capture the "indirect" or "memory" operand in a generic way. It significatly reduces the amount code that needs to be written in order to read operands from memory to temporary storage and write them back. Signed-off-by: Jan Bobek --- target/i386/translate.c | 57 +++++++++++++++++++++++++++++++++++++++++ 1 file changed, 57 insertions(+) diff --git a/target/i386/translate.c b/target/i386/translate.c index 68c6b7d16b..1be6176934 100644 --- a/target/i386/translate.c +++ b/target/i386/translate.c @@ -4670,6 +4670,63 @@ static bool check_cpuid(CPUX86State *env, DisasContext *s, CheckCpuidFeat feat) env, s, modrm, is_write, arg)); \ } +/* + * Generic load-store operand + */ +#define insnop_ldst(opTarg, opTptr) \ + insnop_ldst_ ## opTarg ## opTptr + +#define INSNOP_LDST(opTarg, opTptr) \ + static void insnop_ldst(opTarg, opTptr)(CPUX86State *env, \ + DisasContext *s, \ + bool is_write, \ + insnop_arg_t(opTarg) arg, \ + insnop_arg_t(opTptr) ptr) + +#define DEF_INSNOP_LDST(opT, opTarg, opTptr) \ + typedef insnop_arg_t(opTarg) insnop_arg_t(opT); \ + typedef struct { \ + insnop_ctxt_t(opTarg) arg_ctxt; \ + insnop_ctxt_t(opTptr) ptr_ctxt; \ + insnop_arg_t(opTptr) ptr; \ + } insnop_ctxt_t(opT); \ + \ + /* forward declaration */ \ + INSNOP_LDST(opTarg, opTptr); \ + \ + INSNOP_INIT(opT) \ + { \ + return insnop_init(opTarg)(&ctxt->arg_ctxt, \ + env, s, modrm, is_write) \ + && insnop_init(opTptr)(&ctxt->ptr_ctxt, \ + env, s, modrm, is_write); \ + } \ + INSNOP_PREPARE(opT) \ + { \ + const insnop_arg_t(opTarg) arg = \ + insnop_prepare(opTarg)(&ctxt->arg_ctxt, \ + env, s, modrm, is_write); \ + ctxt->ptr = \ + insnop_prepare(opTptr)(&ctxt->ptr_ctxt, \ + env, s, modrm, is_write); \ + if (!is_write) { \ + insnop_ldst(opTarg, opTptr)(env, s, is_write, \ + arg, ctxt->ptr); \ + } \ + return arg; \ + } \ + INSNOP_FINALIZE(opT) \ + { \ + if (is_write) { \ + insnop_ldst(opTarg, opTptr)(env, s, is_write, \ + arg, ctxt->ptr); \ + } \ + insnop_finalize(opTptr)(&ctxt->ptr_ctxt, \ + env, s, modrm, is_write, ctxt->ptr); \ + insnop_finalize(opTarg)(&ctxt->arg_ctxt, \ + env, s, modrm, is_write, arg); \ + } + static void gen_sse_ng(CPUX86State *env, DisasContext *s, int b) { enum { -- 2.20.1