diff options
| author | Max Filippov <jcmvbkbc@gmail.com> | 2012-12-05 07:15:20 +0400 |
|---|---|---|
| committer | Blue Swirl <blauwirbel@gmail.com> | 2012-12-08 18:48:26 +0000 |
| commit | fcc803d119a4c01a9b0ee5bda35fda1eeabffa33 (patch) | |
| tree | bbd6697bd198b45b2322e5b43d3ab5159e093d98 /target-xtensa/translate.c | |
| parent | 536b558f5896ebbd635b57fa393e82faaa32ad52 (diff) | |
target-xtensa: implement ATOMCTL SR
ATOMCTL SR controls s32c1i opcode behavior depending on targeted memory
type. See ISA, 4.3.12.4 for details.
Signed-off-by: Max Filippov <jcmvbkbc@gmail.com>
Signed-off-by: Blue Swirl <blauwirbel@gmail.com>
Diffstat (limited to 'target-xtensa/translate.c')
| -rw-r--r-- | target-xtensa/translate.c | 13 |
1 files changed, 13 insertions, 0 deletions
diff --git a/target-xtensa/translate.c b/target-xtensa/translate.c index 828b9cabb5..dc08de51ba 100644 --- a/target-xtensa/translate.c +++ b/target-xtensa/translate.c @@ -99,6 +99,7 @@ static const char * const sregnames[256] = { [ITLBCFG] = "ITLBCFG", [DTLBCFG] = "DTLBCFG", [IBREAKENABLE] = "IBREAKENABLE", + [ATOMCTL] = "ATOMCTL", [IBREAKA] = "IBREAKA0", [IBREAKA + 1] = "IBREAKA1", [DBREAKA] = "DBREAKA0", @@ -556,6 +557,11 @@ static void gen_wsr_ibreakenable(DisasContext *dc, uint32_t sr, TCGv_i32 v) gen_jumpi_check_loop_end(dc, 0); } +static void gen_wsr_atomctl(DisasContext *dc, uint32_t sr, TCGv_i32 v) +{ + tcg_gen_andi_i32(cpu_SR[sr], v, 0x3f); +} + static void gen_wsr_ibreaka(DisasContext *dc, uint32_t sr, TCGv_i32 v) { unsigned id = sr - IBREAKA; @@ -693,6 +699,7 @@ static void gen_wsr(DisasContext *dc, uint32_t sr, TCGv_i32 s) [ITLBCFG] = gen_wsr_tlbcfg, [DTLBCFG] = gen_wsr_tlbcfg, [IBREAKENABLE] = gen_wsr_ibreakenable, + [ATOMCTL] = gen_wsr_atomctl, [IBREAKA] = gen_wsr_ibreaka, [IBREAKA + 1] = gen_wsr_ibreaka, [DBREAKA] = gen_wsr_dbreaka, @@ -2317,10 +2324,15 @@ static void disas_xtensa_insn(CPUXtensaState *env, DisasContext *dc) int label = gen_new_label(); TCGv_i32 tmp = tcg_temp_local_new_i32(); TCGv_i32 addr = tcg_temp_local_new_i32(); + TCGv_i32 tpc; tcg_gen_mov_i32(tmp, cpu_R[RRI8_T]); tcg_gen_addi_i32(addr, cpu_R[RRI8_S], RRI8_IMM8 << 2); gen_load_store_alignment(dc, 2, addr, true); + + gen_advance_ccount(dc); + tpc = tcg_const_i32(dc->pc); + gen_helper_check_atomctl(cpu_env, tpc, addr); tcg_gen_qemu_ld32u(cpu_R[RRI8_T], addr, dc->cring); tcg_gen_brcond_i32(TCG_COND_NE, cpu_R[RRI8_T], cpu_SR[SCOMPARE1], label); @@ -2328,6 +2340,7 @@ static void disas_xtensa_insn(CPUXtensaState *env, DisasContext *dc) tcg_gen_qemu_st32(tmp, addr, dc->cring); gen_set_label(label); + tcg_temp_free(tpc); tcg_temp_free(addr); tcg_temp_free(tmp); } |