diff options
| author | Taylor Simpson <tsimpson@quicinc.com> | 2021-04-08 20:07:50 -0500 |
|---|---|---|
| committer | Richard Henderson <richard.henderson@linaro.org> | 2021-05-01 16:01:39 -0700 |
| commit | 46ef47e2a77d1a34996964760b4a0d2b19476f25 (patch) | |
| tree | bb0979125a2c8e2865c8d11b2b888dfb7959906c /target/hexagon/op_helper.c | |
| parent | 57d352ac298b27617a53783305af2554025060d9 (diff) | |
Hexagon (target/hexagon) circular addressing
The following instructions are added
L2_loadrub_pci Rd32 = memub(Rx32++#s4:0:circ(Mu2))
L2_loadrb_pci Rd32 = memb(Rx32++#s4:0:circ(Mu2))
L2_loadruh_pci Rd32 = memuh(Rx32++#s4:1:circ(Mu2))
L2_loadrh_pci Rd32 = memh(Rx32++#s4:1:circ(Mu2))
L2_loadri_pci Rd32 = memw(Rx32++#s4:2:circ(Mu2))
L2_loadrd_pci Rdd32 = memd(Rx32++#s4:3:circ(Mu2))
S2_storerb_pci memb(Rx32++#s4:0:circ(Mu2)) = Rt32
S2_storerh_pci memh(Rx32++#s4:1:circ(Mu2)) = Rt32
S2_storerf_pci memh(Rx32++#s4:1:circ(Mu2)) = Rt.H32
S2_storeri_pci memw(Rx32++#s4:2:circ(Mu2)) = Rt32
S2_storerd_pci memd(Rx32++#s4:3:circ(Mu2)) = Rtt32
S2_storerbnew_pci memb(Rx32++#s4:0:circ(Mu2)) = Nt8.new
S2_storerhnew_pci memw(Rx32++#s4:1:circ(Mu2)) = Nt8.new
S2_storerinew_pci memw(Rx32++#s4:2:circ(Mu2)) = Nt8.new
L2_loadrub_pcr Rd32 = memub(Rx32++I:circ(Mu2))
L2_loadrb_pcr Rd32 = memb(Rx32++I:circ(Mu2))
L2_loadruh_pcr Rd32 = memuh(Rx32++I:circ(Mu2))
L2_loadrh_pcr Rd32 = memh(Rx32++I:circ(Mu2))
L2_loadri_pcr Rd32 = memw(Rx32++I:circ(Mu2))
L2_loadrd_pcr Rdd32 = memd(Rx32++I:circ(Mu2))
S2_storerb_pcr memb(Rx32++I:circ(Mu2)) = Rt32
S2_storerh_pcr memh(Rx32++I:circ(Mu2)) = Rt32
S2_storerf_pcr memh(Rx32++I:circ(Mu2)) = Rt32.H32
S2_storeri_pcr memw(Rx32++I:circ(Mu2)) = Rt32
S2_storerd_pcr memd(Rx32++I:circ(Mu2)) = Rtt32
S2_storerbnew_pcr memb(Rx32++I:circ(Mu2)) = Nt8.new
S2_storerhnew_pcr memh(Rx32++I:circ(Mu2)) = Nt8.new
S2_storerinew_pcr memw(Rx32++I:circ(Mu2)) = Nt8.new
Test cases in tests/tcg/hexagon/circ.c
Signed-off-by: Taylor Simpson <tsimpson@quicinc.com>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Message-Id: <1617930474-31979-23-git-send-email-tsimpson@quicinc.com>
[rth: Squash <1619667142-29636-1-git-send-email-tsimpson@quicinc.com>
removing gen_read_reg and gen_set_byte to avoid clang Werror.]
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Diffstat (limited to 'target/hexagon/op_helper.c')
| -rw-r--r-- | target/hexagon/op_helper.c | 36 |
1 files changed, 14 insertions, 22 deletions
diff --git a/target/hexagon/op_helper.c b/target/hexagon/op_helper.c index f9fb65555b..2319b9313e 100644 --- a/target/hexagon/op_helper.c +++ b/target/hexagon/op_helper.c @@ -251,33 +251,25 @@ void HELPER(debug_commit_end)(CPUHexagonState *env, int has_st0, int has_st1) } -static int32_t fcircadd_v4(int32_t RxV, int32_t offset, int32_t M, int32_t CS) -{ - int32_t length = M & 0x0001ffff; - uint32_t new_ptr = RxV + offset; - uint32_t start_addr = CS; - uint32_t end_addr = start_addr + length; - - if (new_ptr >= end_addr) { - new_ptr -= length; - } else if (new_ptr < start_addr) { - new_ptr += length; - } - - return new_ptr; -} - int32_t HELPER(fcircadd)(int32_t RxV, int32_t offset, int32_t M, int32_t CS) { - int32_t K_const = (M >> 24) & 0xf; - int32_t length = M & 0x1ffff; - int32_t mask = (1 << (K_const + 2)) - 1; + int32_t K_const = sextract32(M, 24, 4); + int32_t length = sextract32(M, 0, 17); uint32_t new_ptr = RxV + offset; - uint32_t start_addr = RxV & (~mask); - uint32_t end_addr = start_addr | length; + uint32_t start_addr; + uint32_t end_addr; if (K_const == 0 && length >= 4) { - return fcircadd_v4(RxV, offset, M, CS); + start_addr = CS; + end_addr = start_addr + length; + } else { + /* + * Versions v3 and earlier used the K value to specify a power-of-2 size + * 2^(K+2) that is greater than the buffer length + */ + int32_t mask = (1 << (K_const + 2)) - 1; + start_addr = RxV & (~mask); + end_addr = start_addr | length; } if (new_ptr >= end_addr) { |