Override instructions to speed up qemu
Signed-off-by: Taylor Simpson <tsimp...@quicinc.com>
---
target/hexagon/helper_overrides.h | 97 +++++++++++++++++++++++++++++++++++++++
1 file changed, 97 insertions(+)
diff --git a/target/hexagon/helper_overrides.h
b/target/hexagon/helper_overrides.h
index e544dd5..52e4a47 100644
--- a/target/hexagon/helper_overrides.h
+++ b/target/hexagon/helper_overrides.h
@@ -1230,4 +1230,101 @@
gen_helper_vacsh_pred(PeV, cpu_env, RxxV, RssV, RttV); \
} while (0)
+/*
+ * The following fWRAP macros are to speed up qemu
+ * We can add more over time
+ */
+
+/*
+ * Add or subtract with carry.
+ * Predicate register is used as an extra input and output.
+ * r5:4 = add(r1:0, r3:2, p1):carry
+ */
+#define fWRAP_A4_addp_c(GENHLPR, SHORTCODE) \
+ do { \
+ TCGv LSB = tcg_temp_new(); \
+ TCGv_i64 LSB_i64 = tcg_temp_new_i64(); \
+ TCGv_i64 tmp_i64 = tcg_temp_new_i64(); \
+ TCGv tmp = tcg_temp_new(); \
+ tcg_gen_add_i64(RddV, RssV, RttV); \
+ fLSBOLD(PxV); \
+ tcg_gen_extu_i32_i64(LSB_i64, LSB); \
+ tcg_gen_add_i64(RddV, RddV, LSB_i64); \
+ fCARRY_FROM_ADD(RssV, RttV, LSB_i64); \
+ tcg_gen_extrl_i64_i32(tmp, RssV); \
+ f8BITSOF(PxV, tmp); \
+ tcg_temp_free(LSB); \
+ tcg_temp_free_i64(LSB_i64); \
+ tcg_temp_free_i64(tmp_i64); \
+ tcg_temp_free(tmp); \
+ } while (0)
+
+/* r5:4 = sub(r1:0, r3:2, p1):carry */
+#define fWRAP_A4_subp_c(GENHLPR, SHORTCODE) \
+ do { \
+ TCGv LSB = tcg_temp_new(); \
+ TCGv_i64 LSB_i64 = tcg_temp_new_i64(); \
+ TCGv_i64 tmp_i64 = tcg_temp_new_i64(); \
+ TCGv tmp = tcg_temp_new(); \
+ tcg_gen_not_i64(tmp_i64, RttV); \
+ tcg_gen_add_i64(RddV, RssV, tmp_i64); \
+ fLSBOLD(PxV); \
+ tcg_gen_extu_i32_i64(LSB_i64, LSB); \
+ tcg_gen_add_i64(RddV, RddV, LSB_i64); \
+ fCARRY_FROM_ADD(RssV, tmp_i64, LSB_i64); \
+ tcg_gen_extrl_i64_i32(tmp, RssV); \
+ f8BITSOF(PxV, tmp); \
+ tcg_temp_free(LSB); \
+ tcg_temp_free_i64(LSB_i64); \
+ tcg_temp_free_i64(tmp_i64); \
+ tcg_temp_free(tmp); \
+ } while (0)
+
+/*
+ * Compare each of the 8 unsigned bytes
+ * The minimum is places in each byte of the destination.
+ * Each bit of the predicate is set true if the bit from the first operand
+ * is greater than the bit from the second operand.
+ * r5:4,p1 = vminub(r1:0, r3:2)
+ */
+#define fWRAP_A6_vminub_RdP(GENHLPR, SHORTCODE) \
+ do { \
+ TCGv BYTE = tcg_temp_new(); \
+ TCGv left = tcg_temp_new(); \
+ TCGv right = tcg_temp_new(); \
+ TCGv tmp = tcg_temp_new(); \
+ int i; \
+ tcg_gen_movi_tl(PeV, 0); \
+ tcg_gen_movi_i64(RddV, 0); \
+ for (i = 0; i < 8; i++) { \
+ fGETUBYTE(i, RttV); \
+ tcg_gen_mov_tl(left, BYTE); \
+ fGETUBYTE(i, RssV); \
+ tcg_gen_mov_tl(right, BYTE); \
+ tcg_gen_setcond_tl(TCG_COND_GT, tmp, left, right); \
+ fSETBIT(i, PeV, tmp); \
+ fMIN(tmp, left, right); \
+ fSETBYTE(i, RddV, tmp); \
+ } \
+ tcg_temp_free(BYTE); \
+ tcg_temp_free(left); \
+ tcg_temp_free(right); \
+ tcg_temp_free(tmp); \
+ } while (0)
+
+#define fWRAP_J2_call(GENHLPR, SHORTCODE) \
+ gen_call(riV)
+#define fWRAP_J2_callr(GENHLPR, SHORTCODE) \
+ gen_callr(RsV)
+
+#define fWRAP_J2_loop0r(GENHLPR, SHORTCODE) \
+ gen_loop0r(RsV, riV, insn)
+#define fWRAP_J2_loop1r(GENHLPR, SHORTCODE) \
+ gen_loop1r(RsV, riV, insn)
+
+#define fWRAP_J2_endloop0(GENHLPR, SHORTCODE) \
+ gen_endloop0()
+#define fWRAP_J2_endloop1(GENHLPR, SHORTCODE) \
+ gen_endloop1()
+
#endif
--
2.7.4
