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- From 87ced255bdf2681f5bf6c89d7121e59f6f342161 Mon Sep 17 00:00:00 2001
- From: Adhemerval Zanella <adhemerval.zanella@linaro.org>
- Date: Fri, 18 Aug 2023 14:49:31 -0300
- Subject: [PATCH] m68k: Use M68K_SCALE_AVAILABLE on __mpn_lshift and
- __mpn_rshift
- This patch adds a new macro, M68K_SCALE_AVAILABLE, similar to gmp
- scale_available_p (mpn/m68k/m68k-defs.m4) that expand to 1 if a
- scale factor can be used in addressing modes. This is used
- instead of __mc68020__ for some optimization decisions.
- Checked on a build for m68k-linux-gnu target mc68020 and mc68040.
- Signed-off-by: Waldemar Brodkorb <wbx@openadk.org>
- Upstream: https://sourceware.org/git/?p=glibc.git;a=commitdiff;h=87ced255bdf2681f5bf6c89d7121e59f6f342161
- ---
- sysdeps/m68k/m680x0/lshift.S | 6 +++---
- sysdeps/m68k/m680x0/rshift.S | 8 ++++----
- sysdeps/m68k/m680x0/sysdep.h | 7 +++++++
- 3 files changed, 14 insertions(+), 7 deletions(-)
- diff --git a/sysdeps/m68k/m680x0/lshift.S b/sysdeps/m68k/m680x0/lshift.S
- index 4240738959..74de90380b 100644
- --- a/sysdeps/m68k/m680x0/lshift.S
- +++ b/sysdeps/m68k/m680x0/lshift.S
- @@ -57,9 +57,9 @@ ENTRY(__mpn_lshift)
- bne L(Lnormal)
- cmpl R(s_ptr),R(res_ptr)
- bls L(Lspecial) /* jump if s_ptr >= res_ptr */
- -#if (defined (__mc68020__) || defined (__NeXT__) || defined(mc68020))
- +#if M68K_SCALE_AVAILABLE
- lea MEM_INDX1(s_ptr,s_size,l,4),R(a2)
- -#else /* not mc68020 */
- +#else
- movel R(s_size),R(d0)
- asll #2,R(d0)
- lea MEM_INDX(s_ptr,d0,l),R(a2)
- @@ -71,7 +71,7 @@ L(Lnormal:)
- moveql #32,R(d5)
- subl R(cnt),R(d5)
-
- -#if (defined (__mc68020__) || defined (__NeXT__) || defined(mc68020))
- +#if M68K_SCALE_AVAILABLE
- lea MEM_INDX1(s_ptr,s_size,l,4),R(s_ptr)
- lea MEM_INDX1(res_ptr,s_size,l,4),R(res_ptr)
- #else /* not mc68000 */
- diff --git a/sysdeps/m68k/m680x0/rshift.S b/sysdeps/m68k/m680x0/rshift.S
- index d56a2b4a44..d398d0287e 100644
- --- a/sysdeps/m68k/m680x0/rshift.S
- +++ b/sysdeps/m68k/m680x0/rshift.S
- @@ -56,9 +56,9 @@ ENTRY(__mpn_rshift)
- bne L(Lnormal)
- cmpl R(res_ptr),R(s_ptr)
- bls L(Lspecial) /* jump if res_ptr >= s_ptr */
- -#if (defined (__mc68020__) || defined (__NeXT__) || defined(mc68020))
- +#if M68K_SCALE_AVAILABLE
- lea MEM_INDX1(res_ptr,s_size,l,4),R(a2)
- -#else /* not mc68020 */
- +#else
- movel R(s_size),R(d0)
- asll #2,R(d0)
- lea MEM_INDX(res_ptr,d0,l),R(a2)
- @@ -121,10 +121,10 @@ L(Lend:)
-
- cfi_restore_state
- L(Lspecial:)
- -#if (defined (__mc68020__) || defined (__NeXT__) || defined(mc68020))
- +#if M68K_SCALE_AVAILABLE
- lea MEM_INDX1(s_ptr,s_size,l,4),R(s_ptr)
- lea MEM_INDX1(res_ptr,s_size,l,4),R(res_ptr)
- -#else /* not mc68000 */
- +#else
- movel R(s_size),R(d0)
- asll #2,R(d0)
- addl R(d0),R(s_ptr)
- diff --git a/sysdeps/m68k/m680x0/sysdep.h b/sysdeps/m68k/m680x0/sysdep.h
- index b31e101273..bee5b3391c 100644
- --- a/sysdeps/m68k/m680x0/sysdep.h
- +++ b/sysdeps/m68k/m680x0/sysdep.h
- @@ -37,3 +37,10 @@
- OP " " SRC "(" PC "), " DST
-
- #endif /* __ASSEMBLER__ */
- +
- +# if defined __mc68020__ || defined __mc68030__ || defined __mc68040__ \
- + || defined __mc68060__
- +# define M68K_SCALE_AVAILABLE 1
- +# else
- +# define M68K_SCALE_AVAILABLE 0
- +# endif
- --
- 2.39.2
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