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| author | Taylor Simpson <tsimpson@quicinc.com> | 2021-10-04 19:12:31 -0500 |
|---|---|---|
| committer | Taylor Simpson <tsimpson@quicinc.com> | 2021-10-28 22:22:49 -0500 |
| commit | b9dd6ff91d29b9e38afd7facf1d683f34bd1ec10 (patch) | |
| tree | 3545ca5315862dad7b2d90b681cc3f016bc71f1f /target/hexagon | |
| parent | f448397a512189e726f5e8026c89ce7fc4392377 (diff) | |
| download | qemu-b9dd6ff91d29b9e38afd7facf1d683f34bd1ec10.zip qemu-b9dd6ff91d29b9e38afd7facf1d683f34bd1ec10.tar.gz qemu-b9dd6ff91d29b9e38afd7facf1d683f34bd1ec10.tar.bz2 | |
Hexagon (target/hexagon) put writes to USR into temp until commit
Change SET_USR_FIELD to write to hex_new_value[HEX_REG_USR] instead
of hex_gpr[HEX_REG_USR].
Then, we need code to mark the instructions that can set implicitly
set USR
- Macros added to hex_common.py
- A_FPOP added in translate.c
Test case added in tests/tcg/hexagon/overflow.c
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Signed-off-by: Taylor Simpson <tsimpson@quicinc.com>
Diffstat (limited to 'target/hexagon')
| -rw-r--r-- | target/hexagon/attribs_def.h.inc | 1 | ||||
| -rwxr-xr-x | target/hexagon/hex_common.py | 2 | ||||
| -rw-r--r-- | target/hexagon/macros.h | 2 | ||||
| -rw-r--r-- | target/hexagon/translate.c | 9 |
4 files changed, 12 insertions, 2 deletions
diff --git a/target/hexagon/attribs_def.h.inc b/target/hexagon/attribs_def.h.inc index 3815509..e44a7ea 100644 --- a/target/hexagon/attribs_def.h.inc +++ b/target/hexagon/attribs_def.h.inc @@ -64,6 +64,7 @@ DEF_ATTRIB(IMPLICIT_WRITES_P1, "Writes Predicate 1", "", "UREG.P1") DEF_ATTRIB(IMPLICIT_WRITES_P2, "Writes Predicate 1", "", "UREG.P2") DEF_ATTRIB(IMPLICIT_WRITES_P3, "May write Predicate 3", "", "UREG.P3") DEF_ATTRIB(IMPLICIT_READS_PC, "Reads the PC register", "", "") +DEF_ATTRIB(IMPLICIT_WRITES_USR, "May write USR", "", "") DEF_ATTRIB(WRITES_PRED_REG, "Writes a predicate register", "", "") DEF_ATTRIB(CRSLOT23, "Can execute in slot 2 or slot 3 (CR)", "", "") diff --git a/target/hexagon/hex_common.py b/target/hexagon/hex_common.py index b3b5340..a84b003 100755 --- a/target/hexagon/hex_common.py +++ b/target/hexagon/hex_common.py @@ -73,6 +73,8 @@ def calculate_attribs(): add_qemu_macro_attrib('fWRITE_P1', 'A_WRITES_PRED_REG') add_qemu_macro_attrib('fWRITE_P2', 'A_WRITES_PRED_REG') add_qemu_macro_attrib('fWRITE_P3', 'A_WRITES_PRED_REG') + add_qemu_macro_attrib('fSET_OVERFLOW', 'A_IMPLICIT_WRITES_USR') + add_qemu_macro_attrib('fSET_LPCFG', 'A_IMPLICIT_WRITES_USR') # Recurse down macros, find attributes from sub-macros macroValues = list(macros.values()) diff --git a/target/hexagon/macros.h b/target/hexagon/macros.h index 5c19cde..13e957b 100644 --- a/target/hexagon/macros.h +++ b/target/hexagon/macros.h @@ -62,7 +62,7 @@ reg_field_info[FIELD].offset) #define SET_USR_FIELD(FIELD, VAL) \ - fINSERT_BITS(env->gpr[HEX_REG_USR], reg_field_info[FIELD].width, \ + fINSERT_BITS(env->new_value[HEX_REG_USR], reg_field_info[FIELD].width, \ reg_field_info[FIELD].offset, (VAL)) #endif diff --git a/target/hexagon/translate.c b/target/hexagon/translate.c index 724b4fc..e10ef36 100644 --- a/target/hexagon/translate.c +++ b/target/hexagon/translate.c @@ -204,7 +204,12 @@ static void mark_implicit_reg_write(DisasContext *ctx, Insn *insn, int attrib, int rnum) { if (GET_ATTRIB(insn->opcode, attrib)) { - bool is_predicated = GET_ATTRIB(insn->opcode, A_CONDEXEC); + /* + * USR is used to set overflow and FP exceptions, + * so treat it as conditional + */ + bool is_predicated = GET_ATTRIB(insn->opcode, A_CONDEXEC) || + rnum == HEX_REG_USR; if (is_predicated && !is_preloaded(ctx, rnum)) { tcg_gen_mov_tl(hex_new_value[rnum], hex_gpr[rnum]); } @@ -230,6 +235,8 @@ static void mark_implicit_reg_writes(DisasContext *ctx, Insn *insn) mark_implicit_reg_write(ctx, insn, A_IMPLICIT_WRITES_SA0, HEX_REG_SA0); mark_implicit_reg_write(ctx, insn, A_IMPLICIT_WRITES_LC1, HEX_REG_LC1); mark_implicit_reg_write(ctx, insn, A_IMPLICIT_WRITES_SA1, HEX_REG_SA1); + mark_implicit_reg_write(ctx, insn, A_IMPLICIT_WRITES_USR, HEX_REG_USR); + mark_implicit_reg_write(ctx, insn, A_FPOP, HEX_REG_USR); } static void mark_implicit_pred_writes(DisasContext *ctx, Insn *insn) |