From: Niccolò Izzo <ni...@rev.ng>
These helpers will be employed by the idef-parser generated code.
Signed-off-by: Alessandro Di Federico <a...@rev.ng>
Signed-off-by: Niccolò Izzo <ni...@rev.ng>
---
target/hexagon/genptr.c | 227 +++++++++++++++++++++++++++++++++++++++-
target/hexagon/genptr.h | 19 ++++
target/hexagon/macros.h | 2 +-
3 files changed, 245 insertions(+), 3 deletions(-)
diff --git a/target/hexagon/genptr.c b/target/hexagon/genptr.c
index 97de669f38..78cda032db 100644
--- a/target/hexagon/genptr.c
+++ b/target/hexagon/genptr.c
@@ -40,7 +40,8 @@ TCGv gen_read_preg(TCGv pred, uint8_t num)
return pred;
}
-static inline void gen_log_predicated_reg_write(int rnum, TCGv val, int slot)
+static inline void gen_log_predicated_reg_write(int rnum, TCGv val,
+ unsigned slot)
{
TCGv one = tcg_const_tl(1);
TCGv zero = tcg_const_tl(0);
@@ -69,7 +70,8 @@ void gen_log_reg_write(int rnum, TCGv val)
#endif
}
-static void gen_log_predicated_reg_write_pair(int rnum, TCGv_i64 val, int slot)
+static void gen_log_predicated_reg_write_pair(int rnum, TCGv_i64 val,
+ unsigned slot)
{
TCGv val32 = tcg_temp_new();
TCGv one = tcg_const_tl(1);
@@ -334,5 +336,226 @@ static inline void gen_store_conditional8(CPUHexagonState
*env,
tcg_gen_movi_tl(hex_llsc_addr, ~0);
}
+void gen_fbrev(TCGv result, TCGv src)
+{
+ TCGv lo = tcg_temp_new();
+ TCGv tmp1 = tcg_temp_new();
+ TCGv tmp2 = tcg_temp_new();
+
+ /* Bit reversal of low 16 bits */
+ tcg_gen_extract_tl(lo, src, 0, 16);
+ tcg_gen_andi_tl(tmp1, lo, 0xaaaa);
+ tcg_gen_shri_tl(tmp1, tmp1, 1);
+ tcg_gen_andi_tl(tmp2, lo, 0x5555);
+ tcg_gen_shli_tl(tmp2, tmp2, 1);
+ tcg_gen_or_tl(lo, tmp1, tmp2);
+ tcg_gen_andi_tl(tmp1, lo, 0xcccc);
+ tcg_gen_shri_tl(tmp1, tmp1, 2);
+ tcg_gen_andi_tl(tmp2, lo, 0x3333);
+ tcg_gen_shli_tl(tmp2, tmp2, 2);
+ tcg_gen_or_tl(lo, tmp1, tmp2);
+ tcg_gen_andi_tl(tmp1, lo, 0xf0f0);
+ tcg_gen_shri_tl(tmp1, tmp1, 4);
+ tcg_gen_andi_tl(tmp2, lo, 0x0f0f);
+ tcg_gen_shli_tl(tmp2, tmp2, 4);
+ tcg_gen_or_tl(lo, tmp1, tmp2);
+ tcg_gen_bswap16_tl(lo, lo);
+
+ /* Final tweaks */
+ tcg_gen_extract_tl(result, src, 16, 16);
+ tcg_gen_or_tl(result, result, lo);
+
+ tcg_temp_free(lo);
+ tcg_temp_free(tmp1);
+ tcg_temp_free(tmp2);
+}
+
+TCGv gen_set_bit(tcg_target_long i, TCGv result, TCGv src)
+{
+ TCGv mask = tcg_const_tl(~(1 << i));
+ TCGv bit = tcg_temp_new();
+ tcg_gen_shli_tl(bit, src, i);
+ tcg_gen_and_tl(result, result, mask);
+ tcg_gen_or_tl(result, result, bit);
+ tcg_temp_free(mask);
+ tcg_temp_free(bit);
+
+ return result;
+}
+
+void gen_cancel(tcg_target_ulong slot)
+{
+ TCGv one = tcg_const_tl(1);
+ tcg_gen_deposit_tl(hex_slot_cancelled, hex_slot_cancelled, one, slot, 1);
+ tcg_temp_free(one);
+}
+
+void gen_store32(TCGv vaddr, TCGv src, tcg_target_long width, unsigned slot)
+{
+ tcg_gen_mov_tl(hex_store_addr[slot], vaddr);
+ tcg_gen_movi_tl(hex_store_width[slot], width);
+ tcg_gen_mov_tl(hex_store_val32[slot], src);
+}
+
+void gen_store1(TCGv_env cpu_env, TCGv vaddr, TCGv src, DisasContext *ctx,
+ unsigned slot)
+{
+ gen_store32(vaddr, src, 1, slot);
+ ctx->store_width[slot] = 1;
+}
+
+void gen_store2(TCGv_env cpu_env, TCGv vaddr, TCGv src, DisasContext *ctx,
+ unsigned slot)
+{
+ gen_store32(vaddr, src, 2, slot);
+ ctx->store_width[slot] = 2;
+}
+
+void gen_store4(TCGv_env cpu_env, TCGv vaddr, TCGv src, DisasContext *ctx,
+ unsigned slot)
+{
+ gen_store32(vaddr, src, 4, slot);
+ ctx->store_width[slot] = 4;
+}
+
+
+void gen_store8(TCGv_env cpu_env, TCGv vaddr, TCGv_i64 src, DisasContext *ctx,
+ unsigned slot)
+{
+ tcg_gen_mov_tl(hex_store_addr[slot], vaddr);
+ tcg_gen_movi_tl(hex_store_width[slot], 8);
+ tcg_gen_mov_i64(hex_store_val64[slot], src);
+ ctx->store_width[slot] = 8;
+}
+
+void gen_set_usr_field(int field, TCGv val)
+{
+ tcg_gen_deposit_tl(hex_gpr[HEX_REG_USR], hex_gpr[HEX_REG_USR], val,
+ reg_field_info[field].offset,
+ reg_field_info[field].width);
+}
+
+void gen_set_usr_fieldi(int field, int x)
+{
+ TCGv val = tcg_const_tl(x);
+ gen_set_usr_field(field, val);
+ tcg_temp_free(val);
+}
+
+void gen_write_new_pc(TCGv addr)
+{
+ /* If there are multiple branches in a packet, ignore the second one */
+ TCGv zero = tcg_const_tl(0);
+ tcg_gen_movcond_tl(TCG_COND_NE, hex_next_PC, hex_branch_taken, zero,
+ hex_next_PC, addr);
+ tcg_gen_movi_tl(hex_branch_taken, 1);
+ tcg_temp_free(zero);
+}
+
+void gen_sat_i32(TCGv dest, TCGv source, int width, bool set_overflow)
+{
+ TCGv max_val = tcg_const_i32((1 << (width - 1)) - 1);
+ TCGv min_val = tcg_const_i32(-(1 << (width - 1)));
+ tcg_gen_movcond_i32(TCG_COND_GT, dest, source, max_val, max_val, source);
+ tcg_gen_movcond_i32(TCG_COND_LT, dest, source, min_val, min_val, dest);
+ /* Set Overflow Bit */
+ if (set_overflow) {
+ TCGv ovf = tcg_temp_new();
+ TCGv one = tcg_const_i32(1);
+ GET_USR_FIELD(USR_OVF, ovf);
+ tcg_gen_movcond_i32(TCG_COND_GT, ovf, source, max_val, one, ovf);
+ tcg_gen_movcond_i32(TCG_COND_LT, ovf, source, min_val, one, ovf);
+ SET_USR_FIELD(USR_OVF, ovf);
+ tcg_temp_free_i32(ovf);
+ tcg_temp_free_i32(one);
+ }
+ tcg_temp_free_i32(max_val);
+ tcg_temp_free_i32(min_val);
+}
+
+void gen_satu_i32(TCGv dest, TCGv source, int width, bool set_overflow)
+{
+ TCGv max_val = tcg_const_i32((1 << width) - 1);
+ tcg_gen_movcond_i32(TCG_COND_GTU, dest, source, max_val, max_val, source);
+ TCGv_i32 zero = tcg_const_i32(0);
+ tcg_gen_movcond_i32(TCG_COND_LT, dest, source, zero, zero, dest);
+ /* Set Overflow Bit */
+ if (set_overflow) {
+ TCGv ovf = tcg_temp_new();
+ TCGv one = tcg_const_i32(1);
+ GET_USR_FIELD(USR_OVF, ovf);
+ tcg_gen_movcond_i32(TCG_COND_GTU, ovf, source, max_val, one, ovf);
+ SET_USR_FIELD(USR_OVF, ovf);
+ tcg_temp_free_i32(ovf);
+ tcg_temp_free_i32(one);
+ }
+ tcg_temp_free_i32(max_val);
+ tcg_temp_free_i32(zero);
+}
+
+void gen_sat_i64(TCGv_i64 dest, TCGv_i64 source, int width, bool set_overflow)
+{
+ TCGv_i64 max_val = tcg_const_i64((1 << (width - 1)) - 1);
+ TCGv_i64 min_val = tcg_const_i64(-(1 << (width - 1)));
+ tcg_gen_movcond_i64(TCG_COND_GT, dest, source, max_val, max_val, source);
+ tcg_gen_movcond_i64(TCG_COND_LT, dest, source, min_val, min_val, dest);
+ /* Set Overflow Bit */
+ if (set_overflow) {
+ TCGv ovf = tcg_temp_new();
+ TCGv_i64 ovf_ext = tcg_temp_new_i64();
+ TCGv_i64 one = tcg_const_i64(1);
+ GET_USR_FIELD(USR_OVF, ovf);
+ tcg_gen_ext_i32_i64(ovf_ext, ovf);
+ tcg_gen_movcond_i64(TCG_COND_GT,
+ ovf_ext,
+ source,
+ max_val,
+ one,
+ ovf_ext);
+ tcg_gen_movcond_i64(TCG_COND_LT,
+ ovf_ext,
+ source,
+ min_val,
+ one,
+ ovf_ext);
+ tcg_gen_trunc_i64_tl(ovf, ovf_ext);
+ SET_USR_FIELD(USR_OVF, ovf);
+ tcg_temp_free_i32(ovf);
+ tcg_temp_free_i64(ovf_ext);
+ tcg_temp_free_i64(one);
+ }
+ tcg_temp_free_i64(max_val);
+ tcg_temp_free_i64(min_val);
+}
+
+void gen_satu_i64(TCGv_i64 dest, TCGv_i64 source, int width, bool set_overflow)
+{
+ TCGv_i64 max_val = tcg_const_i64((1 << width) - 1);
+ tcg_gen_movcond_i64(TCG_COND_GTU, dest, source, max_val, max_val, source);
+ TCGv_i64 zero = tcg_const_i64(0);
+ tcg_gen_movcond_i64(TCG_COND_LT, dest, source, zero, zero, dest);
+ /* Set Overflow Bit */
+ if (set_overflow) {
+ TCGv ovf = tcg_temp_new();
+ TCGv_i64 ovf_ext = tcg_temp_new_i64();
+ TCGv_i64 one = tcg_const_i64(1);
+ GET_USR_FIELD(USR_OVF, ovf);
+ tcg_gen_ext_i32_i64(ovf_ext, ovf);
+ tcg_gen_movcond_i64(TCG_COND_GTU,
+ ovf_ext,
+ source,
+ max_val,
+ one,
+ ovf_ext);
+ tcg_gen_trunc_i64_tl(ovf, ovf_ext);
+ SET_USR_FIELD(USR_OVF, ovf);
+ tcg_temp_free_i32(ovf);
+ tcg_temp_free_i64(ovf_ext);
+ tcg_temp_free_i64(one);
+ }
+ tcg_temp_free_i64(max_val);
+ tcg_temp_free_i64(zero);
+}
+
#include "tcg_funcs_generated.c.inc"
#include "tcg_func_table_generated.c.inc"
diff --git a/target/hexagon/genptr.h b/target/hexagon/genptr.h
index 0bfa99b463..86f5d5222e 100644
--- a/target/hexagon/genptr.h
+++ b/target/hexagon/genptr.h
@@ -28,5 +28,24 @@ TCGv gen_read_reg(TCGv result, int num);
TCGv gen_read_preg(TCGv pred, uint8_t num);
void gen_log_reg_write(int rnum, TCGv val);
void gen_log_pred_write(int pnum, TCGv val);
+void gen_fbrev(TCGv result, TCGv src);
+void gen_cancel(tcg_target_ulong slot);
+TCGv gen_set_bit(tcg_target_long i, TCGv result, TCGv src);
+void gen_store32(TCGv vaddr, TCGv src, tcg_target_long width, unsigned slot);
+void gen_store1(TCGv_env cpu_env, TCGv vaddr, TCGv src, DisasContext *ctx,
+ unsigned slot);
+void gen_store2(TCGv_env cpu_env, TCGv vaddr, TCGv src, DisasContext *ctx,
+ unsigned slot);
+void gen_store4(TCGv_env cpu_env, TCGv vaddr, TCGv src, DisasContext *ctx,
+ unsigned slot);
+void gen_store8(TCGv_env cpu_env, TCGv vaddr, TCGv_i64 src, DisasContext *ctx,
+ unsigned slot);
+void gen_set_usr_field(int field, TCGv val);
+void gen_set_usr_fieldi(int field, int x);
+void gen_write_new_pc(TCGv addr);
+void gen_sat_i32(TCGv dest, TCGv source, int width, bool set_overflow);
+void gen_satu_i32(TCGv dest, TCGv source, int width, bool set_overflow);
+void gen_sat_i64(TCGv_i64 dest, TCGv_i64 source, int width, bool set_overflow);
+void gen_satu_i64(TCGv_i64 dest, TCGv_i64 source, int width, bool
set_overflow);
#endif
diff --git a/target/hexagon/macros.h b/target/hexagon/macros.h
index 78c4efb5cb..7b6556b07b 100644
--- a/target/hexagon/macros.h
+++ b/target/hexagon/macros.h
@@ -154,7 +154,7 @@
#define LOAD_CANCEL(EA) do { CANCEL; } while (0)
#ifdef QEMU_GENERATE
-static inline void gen_pred_cancel(TCGv pred, int slot_num)
+static inline void gen_pred_cancel(TCGv pred, tcg_target_ulong slot_num)
{
TCGv slot_mask = tcg_const_tl(1 << slot_num);
TCGv tmp = tcg_temp_new();
--
2.30.1
