Add pc field to Packet structure
For helpers that need PC, pass an extra argument
Remove slot arg from conditional jump helpers
On a trap0, copy pkt->pc into hex_gpr[HEX_REG_PC]
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Signed-off-by: Taylor Simpson <tsimpson@quicinc.com>
Message-Id: <
20221108162906.3166-6-tsimpson@quicinc.com>
if (hex_common.need_pkt_has_multi_cof(tag)):
f.write(", uint32_t pkt_has_multi_cof")
+ if hex_common.need_PC(tag):
+ if i > 0: f.write(", ")
+ f.write("target_ulong PC")
+ i += 1
if hex_common.need_slot(tag):
if i > 0: f.write(", ")
f.write("uint32_t slot")
if hex_common.need_pkt_has_multi_cof(tag): def_helper_size += 1
if hex_common.need_part1(tag): def_helper_size += 1
if hex_common.need_slot(tag): def_helper_size += 1
+ if hex_common.need_PC(tag): def_helper_size += 1
f.write('DEF_HELPER_%s(%s' % (def_helper_size, tag))
## The return type is void
f.write(', void' )
if hex_common.need_pkt_has_multi_cof(tag): def_helper_size += 1
if hex_common.need_part1(tag): def_helper_size += 1
if hex_common.need_slot(tag): def_helper_size += 1
+ if hex_common.need_PC(tag): def_helper_size += 1
f.write('DEF_HELPER_%s(%s' % (def_helper_size, tag))
## Generate the qemu DEF_HELPER type for each result
## Add the arguments for the instruction pkt_has_multi_cof, slot and
## part1 (if needed)
if hex_common.need_pkt_has_multi_cof(tag): f.write(', i32')
+ if hex_common.need_PC(tag): f.write(', i32')
if hex_common.need_slot(tag): f.write(', i32' )
if hex_common.need_part1(tag): f.write(' , i32' )
f.write(')\n')
RsV = RsV; \
} while (0)
+#define fGEN_TCG_J2_trap0(SHORTCODE) \
+ do { \
+ uiV = uiV; \
+ tcg_gen_movi_tl(hex_gpr[HEX_REG_PC], ctx->pkt->pc); \
+ TCGv excp = tcg_constant_tl(HEX_EXCP_TRAP0); \
+ gen_helper_raise_exception(cpu_env, excp); \
+ } while (0)
#endif
f.write(" TCGv part1 = tcg_constant_tl(insn->part1);\n")
if hex_common.need_slot(tag):
f.write(" TCGv slot = tcg_constant_tl(insn->slot);\n")
+ if hex_common.need_PC(tag):
+ f.write(" TCGv PC = tcg_constant_tl(ctx->pkt->pc);\n")
f.write(" gen_helper_%s(" % (tag))
i=0
## If there is a scalar result, it is the return type
if hex_common.need_pkt_has_multi_cof(tag):
f.write(", pkt_has_multi_cof")
+ if hex_common.need_PC(tag): f.write(", PC")
if hex_common.need_slot(tag): f.write(", slot")
if hex_common.need_part1(tag): f.write(", part1" )
f.write(");\n")
return regtype+regid+'N' in semdict[tag]
def need_slot(tag):
- if ('A_CONDEXEC' in attribdict[tag] or
+ if (('A_CONDEXEC' in attribdict[tag] and
+ 'A_JUMP' not in attribdict[tag]) or
'A_STORE' in attribdict[tag] or
'A_LOAD' in attribdict[tag]):
return 1
def need_ea(tag):
return re.compile(r"\bEA\b").search(semdict[tag])
+def need_PC(tag):
+ return 'A_IMPLICIT_READS_PC' in attribdict[tag]
+
def need_pkt_has_multi_cof(tag):
return 'A_COF' in attribdict[tag]
struct Packet {
uint16_t num_insns;
uint16_t encod_pkt_size_in_bytes;
+ uint32_t pc;
/* Pre-decodes about COF */
bool pkt_has_cof; /* Has any change-of-flow */
#else
#define fREAD_GP() READ_REG(HEX_REG_GP)
#endif
-#define fREAD_PC() (READ_REG(HEX_REG_PC))
+#define fREAD_PC() (PC)
#define fREAD_NPC() (env->next_PC & (0xfffffffe))
return false;
}
-static bool need_pc(Packet *pkt)
-{
- return check_for_attrib(pkt, A_IMPLICIT_READS_PC);
-}
-
static bool need_slot_cancelled(Packet *pkt)
{
return check_for_attrib(pkt, A_CONDEXEC);
}
/* Initialize the runtime state for packet semantics */
- if (need_pc(pkt)) {
- tcg_gen_movi_tl(hex_gpr[HEX_REG_PC], ctx->base.pc_next);
- }
if (need_slot_cancelled(pkt)) {
tcg_gen_movi_tl(hex_slot_cancelled, 0);
}
}
if (decode_packet(nwords, words, &pkt, false) > 0) {
+ pkt.pc = ctx->base.pc_next;
HEX_DEBUG_PRINT_PKT(&pkt);
ctx->pkt = &pkt;
gen_start_packet(ctx);