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tcg: Split INDEX_op_qemu_{ld,st}* for guest address size

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For 32-bit hosts, we cannot simply rely on TCGContext.addr_bits,
as we need one or two host registers to represent the guest address.

Create the new opcodes and update all users.  Since we have not
yet eliminated TARGET_LONG_BITS, only one of the two opcodes will
ever be used, so we can get away with treating them the same in
the backends.

Reviewed-by: Alex Bennée <alex.bennee@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
This commit is contained in:
Richard Henderson 2023-05-16 20:07:20 -07:00
parent 0700ceb393
commit fecccfcc54
15 changed files with 436 additions and 248 deletions
Download patch file Download diff file Expand all files Collapse all files

35
include/tcg/tcg-opc.h
View file

@ -186,7 +186,6 @@ DEF(muls2_i64, 2, 2, 0, IMPL64 | IMPL(TCG_TARGET_HAS_muls2_i64))
DEF(muluh_i64, 1, 2, 0, IMPL64 | IMPL(TCG_TARGET_HAS_muluh_i64))
DEF(mulsh_i64, 1, 2, 0, IMPL64 | IMPL(TCG_TARGET_HAS_mulsh_i64))
#define TLADDR_ARGS (TARGET_LONG_BITS <= TCG_TARGET_REG_BITS ? 1 : 2)
#define DATA64_ARGS (TCG_TARGET_REG_BITS == 64 ? 1 : 2)
/* QEMU specific */
@ -199,25 +198,44 @@ DEF(goto_ptr, 0, 1, 0, TCG_OPF_BB_EXIT | TCG_OPF_BB_END)
DEF(plugin_cb_start, 0, 0, 3, TCG_OPF_NOT_PRESENT)
DEF(plugin_cb_end, 0, 0, 0, TCG_OPF_NOT_PRESENT)
DEF(qemu_ld_i32, 1, TLADDR_ARGS, 1,
/* Replicate ld/st ops for 32 and 64-bit guest addresses. */
DEF(qemu_ld_a32_i32, 1, 1, 1,
TCG_OPF_CALL_CLOBBER | TCG_OPF_SIDE_EFFECTS)
DEF(qemu_st_i32, 0, TLADDR_ARGS + 1, 1,
DEF(qemu_st_a32_i32, 0, 1 + 1, 1,
TCG_OPF_CALL_CLOBBER | TCG_OPF_SIDE_EFFECTS)
DEF(qemu_ld_i64, DATA64_ARGS, TLADDR_ARGS, 1,
DEF(qemu_ld_a32_i64, DATA64_ARGS, 1, 1,
TCG_OPF_CALL_CLOBBER | TCG_OPF_SIDE_EFFECTS | TCG_OPF_64BIT)
DEF(qemu_st_i64, 0, TLADDR_ARGS + DATA64_ARGS, 1,
DEF(qemu_st_a32_i64, 0, DATA64_ARGS + 1, 1,
TCG_OPF_CALL_CLOBBER | TCG_OPF_SIDE_EFFECTS | TCG_OPF_64BIT)
DEF(qemu_ld_a64_i32, 1, DATA64_ARGS, 1,
TCG_OPF_CALL_CLOBBER | TCG_OPF_SIDE_EFFECTS)
DEF(qemu_st_a64_i32, 0, 1 + DATA64_ARGS, 1,
TCG_OPF_CALL_CLOBBER | TCG_OPF_SIDE_EFFECTS)
DEF(qemu_ld_a64_i64, DATA64_ARGS, DATA64_ARGS, 1,
TCG_OPF_CALL_CLOBBER | TCG_OPF_SIDE_EFFECTS | TCG_OPF_64BIT)
DEF(qemu_st_a64_i64, 0, DATA64_ARGS + DATA64_ARGS, 1,
TCG_OPF_CALL_CLOBBER | TCG_OPF_SIDE_EFFECTS | TCG_OPF_64BIT)
/* Only used by i386 to cope with stupid register constraints. */
DEF(qemu_st8_i32, 0, TLADDR_ARGS + 1, 1,
DEF(qemu_st8_a32_i32, 0, 1 + 1, 1,
TCG_OPF_CALL_CLOBBER | TCG_OPF_SIDE_EFFECTS |
IMPL(TCG_TARGET_HAS_qemu_st8_i32))
DEF(qemu_st8_a64_i32, 0, 1 + DATA64_ARGS, 1,
TCG_OPF_CALL_CLOBBER | TCG_OPF_SIDE_EFFECTS |
IMPL(TCG_TARGET_HAS_qemu_st8_i32))
/* Only for 64-bit hosts at the moment. */
DEF(qemu_ld_i128, 2, 1, 1,
DEF(qemu_ld_a32_i128, 2, 1, 1,
TCG_OPF_CALL_CLOBBER | TCG_OPF_SIDE_EFFECTS | TCG_OPF_64BIT |
IMPL(TCG_TARGET_HAS_qemu_ldst_i128))
DEF(qemu_st_i128, 0, 3, 1,
DEF(qemu_ld_a64_i128, 2, 1, 1,
TCG_OPF_CALL_CLOBBER | TCG_OPF_SIDE_EFFECTS | TCG_OPF_64BIT |
IMPL(TCG_TARGET_HAS_qemu_ldst_i128))
DEF(qemu_st_a32_i128, 0, 3, 1,
TCG_OPF_CALL_CLOBBER | TCG_OPF_SIDE_EFFECTS | TCG_OPF_64BIT |
IMPL(TCG_TARGET_HAS_qemu_ldst_i128))
DEF(qemu_st_a64_i128, 0, 3, 1,
TCG_OPF_CALL_CLOBBER | TCG_OPF_SIDE_EFFECTS | TCG_OPF_64BIT |
IMPL(TCG_TARGET_HAS_qemu_ldst_i128))
@ -291,7 +309,6 @@ DEF(tci_movi, 1, 0, 1, TCG_OPF_NOT_PRESENT)
DEF(tci_movl, 1, 0, 1, TCG_OPF_NOT_PRESENT)
#endif
#undef TLADDR_ARGS
#undef DATA64_ARGS
#undef IMPL
#undef IMPL64