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[PULL v2 39/73] translator: add translator_ld{ub,sw,uw,l,q}
From: |
Alex Bennée |
Subject: |
[PULL v2 39/73] translator: add translator_ld{ub,sw,uw,l,q} |
Date: |
Fri, 25 Oct 2019 07:36:39 +0100 |
From: "Emilio G. Cota" <address@hidden>
We don't bother with replicating the fast path (tlb_hit) of the old
cpu_ldst helpers as it has no measurable effect on performance. This
probably indicates we should consider flattening the whole set of
helpers but that is out of scope for this change.
Suggested-by: Richard Henderson <address@hidden>
Signed-off-by: Emilio G. Cota <address@hidden>
[AJB: directly plumb into softmmu/user helpers]
Signed-off-by: Alex Bennée <address@hidden>
Reviewed-by: Richard Henderson <address@hidden>
diff --git a/include/exec/cpu_ldst.h b/include/exec/cpu_ldst.h
index 9151fdb042c..fd499f7e2ff 100644
--- a/include/exec/cpu_ldst.h
+++ b/include/exec/cpu_ldst.h
@@ -129,6 +129,11 @@ static inline void clear_helper_retaddr(void)
#include "exec/cpu_ldst_useronly_template.h"
#undef MEMSUFFIX
+/*
+ * Code access is deprecated in favour of translator_ld* functions
+ * (see translator.h). However there are still users that need to
+ * converted so for now these stay.
+ */
#define MEMSUFFIX _code
#define CODE_ACCESS
#define DATA_SIZE 1
@@ -427,6 +432,12 @@ static inline CPUTLBEntry *tlb_entry(CPUArchState *env,
uintptr_t mmu_idx,
#undef CPU_MMU_INDEX
#undef MEMSUFFIX
+/*
+ * Code access is deprecated in favour of translator_ld* functions
+ * (see translator.h). However there are still users that need to
+ * converted so for now these stay.
+ */
+
#define CPU_MMU_INDEX (cpu_mmu_index(env, true))
#define MEMSUFFIX _code
#define SOFTMMU_CODE_ACCESS
diff --git a/include/exec/translator.h b/include/exec/translator.h
index 180c51d5092..459dd72aabc 100644
--- a/include/exec/translator.h
+++ b/include/exec/translator.h
@@ -19,7 +19,10 @@
*/
+#include "qemu/bswap.h"
#include "exec/exec-all.h"
+#include "exec/cpu_ldst.h"
+#include "exec/plugin-gen.h"
#include "tcg/tcg.h"
@@ -142,4 +145,61 @@ void translator_loop(const TranslatorOps *ops,
DisasContextBase *db,
void translator_loop_temp_check(DisasContextBase *db);
-#endif /* EXEC__TRANSLATOR_H */
+/*
+ * Translator Load Functions
+ *
+ * These are intended to replace the old cpu_ld*_code functions and
+ * are mandatory for front-ends that have been migrated to the common
+ * translator_loop. These functions are only intended to be called
+ * from the translation stage and should not be called from helper
+ * functions. Those functions should be converted to encode the
+ * relevant information at translation time.
+ */
+
+#ifdef CONFIG_USER_ONLY
+
+#define DO_LOAD(type, name, shift) \
+ do { \
+ set_helper_retaddr(1); \
+ ret = name ## _p(g2h(pc)); \
+ clear_helper_retaddr(); \
+ } while (0)
+
+#else
+
+#define DO_LOAD(type, name, shift) \
+ do { \
+ int mmu_idx = cpu_mmu_index(env, true); \
+ TCGMemOpIdx oi = make_memop_idx(shift, mmu_idx); \
+ ret = helper_ret_ ## name ## _cmmu(env, pc, oi, 0); \
+ } while (0)
+
+#endif
+
+#define GEN_TRANSLATOR_LD(fullname, name, type, shift, swap_fn) \
+ static inline type \
+ fullname ## _swap(CPUArchState *env, abi_ptr pc, bool do_swap) \
+ { \
+ type ret; \
+ DO_LOAD(type, name, shift); \
+ \
+ if (do_swap) { \
+ ret = swap_fn(ret); \
+ } \
+ plugin_insn_append(&ret, sizeof(ret)); \
+ return ret; \
+ } \
+ \
+ static inline type fullname(CPUArchState *env, abi_ptr pc) \
+ { \
+ return fullname ## _swap(env, pc, false); \
+ }
+
+GEN_TRANSLATOR_LD(translator_ldub, ldub, uint8_t, 0, /* no swap */ )
+GEN_TRANSLATOR_LD(translator_ldsw, ldsw, int16_t, 1, bswap16)
+GEN_TRANSLATOR_LD(translator_lduw, lduw, uint16_t, 1, bswap16)
+GEN_TRANSLATOR_LD(translator_ldl, ldl, uint32_t, 2, bswap32)
+GEN_TRANSLATOR_LD(translator_ldq, ldq, uint64_t, 3, bswap64)
+#undef GEN_TRANSLATOR_LD
+
+#endif /* EXEC__TRANSLATOR_H */
--
2.20.1
- [PULL v2 31/73] tcg: let plugins instrument virtual memory accesses, (continued)
- [PULL v2 31/73] tcg: let plugins instrument virtual memory accesses, Alex Bennée, 2019/10/25
- [PULL v2 43/73] target/i386: fetch code with translator_ld, Alex Bennée, 2019/10/25
- [PULL v2 42/73] target/sh4: fetch code with translator_ld, Alex Bennée, 2019/10/25
- [PULL v2 44/73] target/hppa: fetch code with translator_ld, Alex Bennée, 2019/10/25
- [PULL v2 64/73] tests/tcg: enable plugin testing, Alex Bennée, 2019/10/25
- [PULL v2 14/73] travis.yml: --enable-debug-tcg to check-tcg, Alex Bennée, 2019/10/25
- [PULL v2 33/73] translate-all: notify plugin code of tb_flush, Alex Bennée, 2019/10/25
- [PULL v2 66/73] tests/plugin: add instruction execution breakdown, Alex Bennée, 2019/10/25
- [PULL v2 51/73] translator: inject instrumentation from plugins, Alex Bennée, 2019/10/25
- [PULL v2 61/73] tests/tcg: set QEMU_OPTS for all cris runs, Alex Bennée, 2019/10/25
- [PULL v2 39/73] translator: add translator_ld{ub,sw,uw,l,q},
Alex Bennée <=
- [PULL v2 68/73] accel/stubs: reduce headers from tcg-stub, Alex Bennée, 2019/10/25
- [PULL v2 47/73] target/riscv: fetch code with translator_ld, Alex Bennée, 2019/10/25
- [PULL v2 16/73] tests/docker: update Travis image to a more current version, Alex Bennée, 2019/10/25
- [PULL v2 26/73] cputlb: document get_page_addr_code, Alex Bennée, 2019/10/25
- [PULL v2 23/73] plugin: add core code, Alex Bennée, 2019/10/25
- [PULL v2 73/73] travis.yml: enable linux-gcc-debug-tcg cache, Alex Bennée, 2019/10/25
- [PULL v2 29/73] plugin-gen: add module for TCG-related code, Alex Bennée, 2019/10/25
- Re: [PULL v2 00/73] tcg plugins and testing updates, Markus Armbruster, 2019/10/25