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tcg: Combine dh_is_64bit and dh_is_signed to dh_typecode

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We will shortly be interested in distinguishing pointers
from integers in the helper's declaration, as well as a
true void return.  We currently have two parallel 1 bit
fields; merge them and expand to a 3 bit field.

Our current maximum is 7 helper arguments, plus the return
makes 8 * 3 = 24 bits used within the uint32_t typemask.

Tested-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
This commit is contained in:
Richard Henderson 2021-03-18 10:01:01 -06:00
parent 3ccf6cd0e3
commit 7319d83a73
7 changed files with 67 additions and 85 deletions
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37
include/exec/helper-head.h
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@ -85,32 +85,14 @@
#define dh_retvar_ptr tcgv_ptr_temp(retval)
#define dh_retvar(t) glue(dh_retvar_, dh_alias(t))
#define dh_is_64bit_void 0
#define dh_is_64bit_noreturn 0
#define dh_is_64bit_i32 0
#define dh_is_64bit_i64 1
#define dh_is_64bit_ptr (sizeof(void *) == 8)
#define dh_is_64bit_cptr dh_is_64bit_ptr
#define dh_is_64bit(t) glue(dh_is_64bit_, dh_alias(t))
#define dh_is_signed_void 0
#define dh_is_signed_noreturn 0
#define dh_is_signed_i32 0
#define dh_is_signed_s32 1
#define dh_is_signed_i64 0
#define dh_is_signed_s64 1
#define dh_is_signed_f16 0
#define dh_is_signed_f32 0
#define dh_is_signed_f64 0
#define dh_is_signed_tl 0
#define dh_is_signed_int 1
/* ??? This is highly specific to the host cpu. There are even special
extension instructions that may be required, e.g. ia64's addp4. But
for now we don't support any 64-bit targets with 32-bit pointers. */
#define dh_is_signed_ptr 0
#define dh_is_signed_cptr dh_is_signed_ptr
#define dh_is_signed_env dh_is_signed_ptr
#define dh_is_signed(t) dh_is_signed_##t
#define dh_typecode_void 0
#define dh_typecode_noreturn 0
#define dh_typecode_i32 2
#define dh_typecode_s32 3
#define dh_typecode_i64 4
#define dh_typecode_s64 5
#define dh_typecode_ptr 6
#define dh_typecode(t) glue(dh_typecode_, dh_alias(t))
#define dh_callflag_i32 0
#define dh_callflag_s32 0
@ -126,8 +108,7 @@
#define dh_callflag_noreturn TCG_CALL_NO_RETURN
#define dh_callflag(t) glue(dh_callflag_, dh_alias(t))
#define dh_sizemask(t, n) \
((dh_is_64bit(t) << (n*2)) | (dh_is_signed(t) << (n*2+1)))
#define dh_typemask(t, n) (dh_typecode(t) << (n * 3))
#define dh_arg(t, n) \
glue(glue(tcgv_, dh_alias(t)), _temp)(glue(arg, n))