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Hexagon (target/hexagon) Add overrides for direct call instructions 

Add overrides for
    J2_call
    J2_callt
    J2_callf

Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Signed-off-by: Taylor Simpson <tsimpson@quicinc.com>
Message-Id: <20221108162906.3166-8-tsimpson@quicinc.com>
This commit is contained in:
Taylor Simpson 2022-11-08 08:29:02 -08:00
parent 613653e500
commit 61c6c06e5d
2 changed files with 63 additions and 0 deletions
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8
target/hexagon/gen_tcg.h
View File

@ -612,6 +612,14 @@
tcg_temp_free(tmp); \
} while (0)
#define fGEN_TCG_J2_call(SHORTCODE) \
gen_call(ctx, riV)
#define fGEN_TCG_J2_callt(SHORTCODE) \
gen_cond_call(ctx, PuV, TCG_COND_EQ, riV)
#define fGEN_TCG_J2_callf(SHORTCODE) \
gen_cond_call(ctx, PuV, TCG_COND_NE, riV)
#define fGEN_TCG_J2_pause(SHORTCODE) \
do { \
uiV = uiV; \

55
target/hexagon/genptr.c
View File

@ -456,6 +456,61 @@ static TCGv gen_8bitsof(TCGv result, TCGv value)
return result;
}
static void gen_write_new_pc_addr(DisasContext *ctx, TCGv addr,
TCGCond cond, TCGv pred)
{
TCGLabel *pred_false = NULL;
if (cond != TCG_COND_ALWAYS) {
pred_false = gen_new_label();
tcg_gen_brcondi_tl(cond, pred, 0, pred_false);
}
if (ctx->pkt->pkt_has_multi_cof) {
/* If there are multiple branches in a packet, ignore the second one */
tcg_gen_movcond_tl(TCG_COND_NE, hex_gpr[HEX_REG_PC],
hex_branch_taken, tcg_constant_tl(0),
hex_gpr[HEX_REG_PC], addr);
tcg_gen_movi_tl(hex_branch_taken, 1);
} else {
tcg_gen_mov_tl(hex_gpr[HEX_REG_PC], addr);
}
if (cond != TCG_COND_ALWAYS) {
gen_set_label(pred_false);
}
}
static void gen_write_new_pc_pcrel(DisasContext *ctx, int pc_off,
TCGCond cond, TCGv pred)
{
target_ulong dest = ctx->pkt->pc + pc_off;
gen_write_new_pc_addr(ctx, tcg_constant_tl(dest), cond, pred);
}
static void gen_call(DisasContext *ctx, int pc_off)
{
TCGv next_PC =
tcg_constant_tl(ctx->pkt->pc + ctx->pkt->encod_pkt_size_in_bytes);
gen_log_reg_write(HEX_REG_LR, next_PC);
gen_write_new_pc_pcrel(ctx, pc_off, TCG_COND_ALWAYS, NULL);
}
static void gen_cond_call(DisasContext *ctx, TCGv pred,
TCGCond cond, int pc_off)
{
TCGv next_PC;
TCGv lsb = tcg_temp_local_new();
TCGLabel *skip = gen_new_label();
tcg_gen_andi_tl(lsb, pred, 1);
gen_write_new_pc_pcrel(ctx, pc_off, cond, lsb);
tcg_gen_brcondi_tl(cond, lsb, 0, skip);
tcg_temp_free(lsb);
next_PC =
tcg_constant_tl(ctx->pkt->pc + ctx->pkt->encod_pkt_size_in_bytes);
gen_log_reg_write(HEX_REG_LR, next_PC);
gen_set_label(skip);
}
/* Shift left with saturation */
static void gen_shl_sat(TCGv dst, TCGv src, TCGv shift_amt)
{