Override dczeroa, allocframe, and return instructions
Signed-off-by: Taylor Simpson <tsimp...@quicinc.com>
---
target/hexagon/helper_overrides.h | 209 ++++++++++++++++++++++++++++++++++++++
1 file changed, 209 insertions(+)
diff --git a/target/hexagon/helper_overrides.h
b/target/hexagon/helper_overrides.h
index f023442..c7550d5 100644
--- a/target/hexagon/helper_overrides.h
+++ b/target/hexagon/helper_overrides.h
@@ -991,4 +991,213 @@
#define fWRAP_L4_ior_memoph_io(GENHLPR, SHORTCODE) \
fWRAP_MEMOP(GENHLPR, SHORTCODE, 2, tcg_gen_ori_tl(tmp, tmp, 1 << UiV))
+/* dczeroa clears the 32 byte cache line at the address given */
+#define fWRAP_Y2_dczeroa(GENHLPR, SHORTCODE) SHORTCODE
+
+/* We have to brute force allocframe because it has C math in the semantics */
+#define fWRAP_S2_allocframe(GENHLPR, SHORTCODE) \
+ do { \
+ TCGv_i64 scramble_tmp = tcg_temp_new_i64(); \
+ TCGv tmp = tcg_temp_new(); \
+ { fEA_RI(RxV, -8); \
+ fSTORE(1, 8, EA, fFRAME_SCRAMBLE((fCAST8_8u(fREAD_LR()) << 32) | \
+ fCAST4_4u(fREAD_FP()))); \
+ fWRITE_FP(EA); \
+ fFRAMECHECK(EA - uiV, EA); \
+ tcg_gen_subi_tl(RxV, EA, uiV); \
+ } \
+ tcg_temp_free_i64(scramble_tmp); \
+ tcg_temp_free(tmp); \
+ } while (0)
+
+#define fWRAP_SS2_allocframe(GENHLPR, SHORTCODE) \
+ do { \
+ TCGv_i64 scramble_tmp = tcg_temp_new_i64(); \
+ TCGv tmp = tcg_temp_new(); \
+ { fEA_RI(fREAD_SP(), -8); \
+ fSTORE(1, 8, EA, fFRAME_SCRAMBLE((fCAST8_8u(fREAD_LR()) << 32) | \
+ fCAST4_4u(fREAD_FP()))); \
+ fWRITE_FP(EA); \
+ fFRAMECHECK(EA - uiV, EA); \
+ tcg_gen_subi_tl(tmp, EA, uiV); \
+ fWRITE_SP(tmp); \
+ } \
+ tcg_temp_free_i64(scramble_tmp); \
+ tcg_temp_free(tmp); \
+ } while (0)
+
+/* Also have to brute force the deallocframe variants */
+#define fWRAP_L2_deallocframe(GENHLPR, SHORTCODE) \
+ do { \
+ TCGv tmp = tcg_temp_new(); \
+ TCGv_i64 tmp_i64 = tcg_temp_new_i64(); \
+ { \
+ fEA_REG(RsV); \
+ fLOAD(1, 8, u, EA, tmp_i64); \
+ tcg_gen_mov_i64(RddV, fFRAME_UNSCRAMBLE(tmp_i64)); \
+ tcg_gen_addi_tl(tmp, EA, 8); \
+ fWRITE_SP(tmp); \
+ } \
+ tcg_temp_free(tmp); \
+ tcg_temp_free_i64(tmp_i64); \
+ } while (0)
+
+#define fWRAP_SL2_deallocframe(GENHLPR, SHORTCODE) \
+ do { \
+ TCGv WORD = tcg_temp_new(); \
+ TCGv tmp = tcg_temp_new(); \
+ TCGv_i64 tmp_i64 = tcg_temp_new_i64(); \
+ { \
+ fEA_REG(fREAD_FP()); \
+ fLOAD(1, 8, u, EA, tmp_i64); \
+ fFRAME_UNSCRAMBLE(tmp_i64); \
+ fWRITE_LR(fGETWORD(1, tmp_i64)); \
+ fWRITE_FP(fGETWORD(0, tmp_i64)); \
+ tcg_gen_addi_tl(tmp, EA, 8); \
+ fWRITE_SP(tmp); \
+ } \
+ tcg_temp_free(WORD); \
+ tcg_temp_free(tmp); \
+ tcg_temp_free_i64(tmp_i64); \
+ } while (0)
+
+#define fWRAP_L4_return(GENHLPR, SHORTCODE) \
+ do { \
+ TCGv tmp = tcg_temp_new(); \
+ TCGv_i64 tmp_i64 = tcg_temp_new_i64(); \
+ TCGv WORD = tcg_temp_new(); \
+ { \
+ fEA_REG(RsV); \
+ fLOAD(1, 8, u, EA, tmp_i64); \
+ tcg_gen_mov_i64(RddV, fFRAME_UNSCRAMBLE(tmp_i64)); \
+ tcg_gen_addi_tl(tmp, EA, 8); \
+ fWRITE_SP(tmp); \
+ fJUMPR(REG_LR, fGETWORD(1, RddV), COF_TYPE_JUMPR);\
+ } \
+ tcg_temp_free(tmp); \
+ tcg_temp_free_i64(tmp_i64); \
+ tcg_temp_free(WORD); \
+ } while (0)
+
+#define fWRAP_SL2_return(GENHLPR, SHORTCODE) \
+ do { \
+ TCGv tmp = tcg_temp_new(); \
+ TCGv_i64 tmp_i64 = tcg_temp_new_i64(); \
+ TCGv WORD = tcg_temp_new(); \
+ { \
+ fEA_REG(fREAD_FP()); \
+ fLOAD(1, 8, u, EA, tmp_i64); \
+ fFRAME_UNSCRAMBLE(tmp_i64); \
+ fWRITE_LR(fGETWORD(1, tmp_i64)); \
+ fWRITE_FP(fGETWORD(0, tmp_i64)); \
+ tcg_gen_addi_tl(tmp, EA, 8); \
+ fWRITE_SP(tmp); \
+ fJUMPR(REG_LR, fGETWORD(1, tmp_i64), COF_TYPE_JUMPR);\
+ } \
+ tcg_temp_free(tmp); \
+ tcg_temp_free_i64(tmp_i64); \
+ tcg_temp_free(WORD); \
+ } while (0)
+
+/*
+ * Conditional returns follow the same predicate naming convention as
+ * predicated loads above
+ */
+#define fWRAP_COND_RETURN(PRED) \
+ do { \
+ TCGv LSB = tcg_temp_new(); \
+ TCGv_i64 LSB_i64 = tcg_temp_new_i64(); \
+ TCGv zero = tcg_const_tl(0); \
+ TCGv_i64 zero_i64 = tcg_const_i64(0); \
+ TCGv_i64 unscramble = tcg_temp_new_i64(); \
+ TCGv WORD = tcg_temp_new(); \
+ TCGv SP = tcg_temp_new(); \
+ TCGv_i64 tmp_i64 = tcg_temp_new_i64(); \
+ TCGv tmp = tcg_temp_new(); \
+ fEA_REG(RsV); \
+ PRED; \
+ tcg_gen_extu_i32_i64(LSB_i64, LSB); \
+ fLOAD(1, 8, u, EA, tmp_i64); \
+ tcg_gen_mov_i64(unscramble, fFRAME_UNSCRAMBLE(tmp_i64)); \
+ READ_REG_PAIR(RddV, HEX_REG_FP); \
+ tcg_gen_movcond_i64(TCG_COND_NE, RddV, LSB_i64, zero_i64, \
+ unscramble, RddV); \
+ tcg_gen_mov_tl(SP, hex_gpr[HEX_REG_SP]); \
+ tcg_gen_addi_tl(tmp, EA, 8); \
+ tcg_gen_movcond_tl(TCG_COND_NE, SP, LSB, zero, tmp, SP); \
+ fWRITE_SP(SP); \
+ gen_cond_return(LSB, fGETWORD(1, RddV)); \
+ tcg_temp_free(LSB); \
+ tcg_temp_free_i64(LSB_i64); \
+ tcg_temp_free(zero); \
+ tcg_temp_free_i64(zero_i64); \
+ tcg_temp_free_i64(unscramble); \
+ tcg_temp_free(WORD); \
+ tcg_temp_free(SP); \
+ tcg_temp_free_i64(tmp_i64); \
+ tcg_temp_free(tmp); \
+ } while (0)
+
+#define fWRAP_L4_return_t(GENHLPR, SHORTCODE) \
+ fWRAP_COND_RETURN(fLSBOLD(PvV))
+#define fWRAP_L4_return_f(GENHLPR, SHORTCODE) \
+ fWRAP_COND_RETURN(fLSBOLDNOT(PvV))
+#define fWRAP_L4_return_tnew_pt(GENHLPR, SHORTCODE) \
+ fWRAP_COND_RETURN(fLSBNEW(PvN))
+#define fWRAP_L4_return_fnew_pt(GENHLPR, SHORTCODE) \
+ fWRAP_COND_RETURN(fLSBNEWNOT(PvN))
+#define fWRAP_L4_return_tnew_pnt(GENHLPR, SHORTCODE) \
+ fWRAP_COND_RETURN(fLSBNEW(PvN))
+#define fWRAP_L4_return_tnew_pnt(GENHLPR, SHORTCODE) \
+ fWRAP_COND_RETURN(fLSBNEW(PvN))
+#define fWRAP_L4_return_fnew_pnt(GENHLPR, SHORTCODE) \
+ fWRAP_COND_RETURN(fLSBNEWNOT(PvN))
+
+#define fWRAP_COND_RETURN_SUBINSN(PRED) \
+ do { \
+ TCGv LSB = tcg_temp_new(); \
+ TCGv_i64 LSB_i64 = tcg_temp_new_i64(); \
+ TCGv zero = tcg_const_tl(0); \
+ TCGv_i64 zero_i64 = tcg_const_i64(0); \
+ TCGv_i64 unscramble = tcg_temp_new_i64(); \
+ TCGv_i64 RddV = tcg_temp_new_i64(); \
+ TCGv WORD = tcg_temp_new(); \
+ TCGv SP = tcg_temp_new(); \
+ TCGv_i64 tmp_i64 = tcg_temp_new_i64(); \
+ TCGv tmp = tcg_temp_new(); \
+ fEA_REG(fREAD_FP()); \
+ PRED; \
+ tcg_gen_extu_i32_i64(LSB_i64, LSB); \
+ fLOAD(1, 8, u, EA, tmp_i64); \
+ tcg_gen_mov_i64(unscramble, fFRAME_UNSCRAMBLE(tmp_i64)); \
+ READ_REG_PAIR(RddV, HEX_REG_FP); \
+ tcg_gen_movcond_i64(TCG_COND_NE, RddV, LSB_i64, zero_i64, \
+ unscramble, RddV); \
+ tcg_gen_mov_tl(SP, hex_gpr[HEX_REG_SP]); \
+ tcg_gen_addi_tl(tmp, EA, 8); \
+ tcg_gen_movcond_tl(TCG_COND_NE, SP, LSB, zero, tmp, SP); \
+ fWRITE_SP(SP); \
+ WRITE_REG_PAIR(HEX_REG_FP, RddV); \
+ gen_cond_return(LSB, fGETWORD(1, RddV)); \
+ tcg_temp_free(LSB); \
+ tcg_temp_free_i64(LSB_i64); \
+ tcg_temp_free(zero); \
+ tcg_temp_free_i64(zero_i64); \
+ tcg_temp_free_i64(unscramble); \
+ tcg_temp_free_i64(RddV); \
+ tcg_temp_free(WORD); \
+ tcg_temp_free(SP); \
+ tcg_temp_free_i64(tmp_i64); \
+ tcg_temp_free(tmp); \
+ } while (0)
+
+#define fWRAP_SL2_return_t(GENHLPR, SHORTCODE) \
+ fWRAP_COND_RETURN_SUBINSN(fLSBOLD(fREAD_P0()))
+#define fWRAP_SL2_return_f(GENHLPR, SHORTCODE) \
+ fWRAP_COND_RETURN_SUBINSN(fLSBOLDNOT(fREAD_P0()))
+#define fWRAP_SL2_return_tnew(GENHLPR, SHORTCODE) \
+ fWRAP_COND_RETURN_SUBINSN(fLSBNEW0)
+#define fWRAP_SL2_return_fnew(GENHLPR, SHORTCODE) \
+ fWRAP_COND_RETURN_SUBINSN(fLSBNEW0NOT)
+
#endif
--
2.7.4
