diff mbox series

[committed] hppa: Fix warnings building linux-atomic.c and fptr.c on hppa64-linux

Message ID ea277fea-a7ac-6053-f70b-7e6f057c3d54@bell.net
State Committed
Headers
Series [committed] hppa: Fix warnings building linux-atomic.c and fptr.c on hppa64-linux |

Commit Message

John David Anglin Oct. 27, 2021, 6:15 p.m. UTC 
  This change fixes a couple of warnings observed building libgcc on hppa64-linux.

The hppa64-linux target uses OPDs and doesn't require any special code to canonicalize
function pointers for comparison.  I removed inclusion of pa/t-linux from tmake_file and
adjusted pa/t-linux64 to fix this issue.

I defined types u8, u16 and u64 in linux-atomic.s to fix the type mismatch warning from
linux-atomic.c.

Tested on hppa-unknown-linux-gnu and hppa64-unknown-linux-gnu.

Committed to active branches.

Dave
---
Fix warnings building linux-atomic.c and fptr.c on hppa64-linux

The file fptr.c is specific to 32-bit hppa-linux and should not be
included in LIB2ADD on hppa64-linux.

There is a builtin type mismatch in linux-atomic.c using the type
long long unsigned int for 64-bit atomic operations on hppa64-linux.

2021-10-27  John David Anglin  <danglin@gcc.gnu.org>

libgcc/ChangeLog:

	* config.host (hppa*64*-*-linux*): Don't add pa/t-linux to
	tmake_file.
	* config/pa/linux-atomic.c: Define u8, u16 and u64 types.
	Use them in FETCH_AND_OP_2, OP_AND_FETCH_2, COMPARE_AND_SWAP_2,
	SYNC_LOCK_TEST_AND_SET_2 and SYNC_LOCK_RELEASE_1 macros.
	* config/pa/t-linux64 (LIB1ASMSRC): New define.
	(LIB1ASMFUNCS): Revise.
	(HOST_LIBGCC2_CFLAGS): Add "-DLINUX=1".
diff mbox series

Patch

diff --git a/libgcc/config.host b/libgcc/config.host
index 6c34b13d611..85de83da766 100644
--- a/libgcc/config.host
+++ b/libgcc/config.host
@@ -619,7 +619,7 @@  h8300-*-linux*)
  	tm_file="$tm_file h8300/h8300-lib.h"
  	;;
  hppa*64*-*-linux*)
-	tmake_file="$tmake_file pa/t-linux pa/t-linux64"
+	tmake_file="$tmake_file pa/t-linux64"
  	extra_parts="crtbegin.o crtbeginS.o crtbeginT.o crtend.o crtendS.o"
  	;;
  hppa*-*-linux*)
diff --git a/libgcc/config/pa/linux-atomic.c b/libgcc/config/pa/linux-atomic.c
index c882b55a127..500a3652499 100644
--- a/libgcc/config/pa/linux-atomic.c
+++ b/libgcc/config/pa/linux-atomic.c
@@ -28,6 +28,14 @@  see the files COPYING3 and COPYING.RUNTIME respectively.  If not, see
  #define EBUSY   16
  #define ENOSYS 251

+typedef unsigned char u8;
+typedef short unsigned int u16;
+#ifdef __LP64__
+typedef long unsigned int u64;
+#else
+typedef long long unsigned int u64;
+#endif
+
  /* PA-RISC 2.0 supports out-of-order execution for loads and stores.
     Thus, we need to synchonize memory accesses.  For more info, see:
     "Advanced Performance Features of the 64-bit PA-8000" by Doug Hunt.
@@ -117,26 +125,26 @@  __kernel_cmpxchg2 (volatile void *mem, const void *oldval, const void *newval,
      return tmp;								\
    }

-FETCH_AND_OP_2 (add,   , +, long long unsigned int, 8, 3)
-FETCH_AND_OP_2 (sub,   , -, long long unsigned int, 8, 3)
-FETCH_AND_OP_2 (or,    , |, long long unsigned int, 8, 3)
-FETCH_AND_OP_2 (and,   , &, long long unsigned int, 8, 3)
-FETCH_AND_OP_2 (xor,   , ^, long long unsigned int, 8, 3)
-FETCH_AND_OP_2 (nand, ~, &, long long unsigned int, 8, 3)
-
-FETCH_AND_OP_2 (add,   , +, short unsigned int, 2, 1)
-FETCH_AND_OP_2 (sub,   , -, short unsigned int, 2, 1)
-FETCH_AND_OP_2 (or,    , |, short unsigned int, 2, 1)
-FETCH_AND_OP_2 (and,   , &, short unsigned int, 2, 1)
-FETCH_AND_OP_2 (xor,   , ^, short unsigned int, 2, 1)
-FETCH_AND_OP_2 (nand, ~, &, short unsigned int, 2, 1)
-
-FETCH_AND_OP_2 (add,   , +, unsigned char, 1, 0)
-FETCH_AND_OP_2 (sub,   , -, unsigned char, 1, 0)
-FETCH_AND_OP_2 (or,    , |, unsigned char, 1, 0)
-FETCH_AND_OP_2 (and,   , &, unsigned char, 1, 0)
-FETCH_AND_OP_2 (xor,   , ^, unsigned char, 1, 0)
-FETCH_AND_OP_2 (nand, ~, &, unsigned char, 1, 0)
+FETCH_AND_OP_2 (add,   , +, u64, 8, 3)
+FETCH_AND_OP_2 (sub,   , -, u64, 8, 3)
+FETCH_AND_OP_2 (or,    , |, u64, 8, 3)
+FETCH_AND_OP_2 (and,   , &, u64, 8, 3)
+FETCH_AND_OP_2 (xor,   , ^, u64, 8, 3)
+FETCH_AND_OP_2 (nand, ~, &, u64, 8, 3)
+
+FETCH_AND_OP_2 (add,   , +, u16, 2, 1)
+FETCH_AND_OP_2 (sub,   , -, u16, 2, 1)
+FETCH_AND_OP_2 (or,    , |, u16, 2, 1)
+FETCH_AND_OP_2 (and,   , &, u16, 2, 1)
+FETCH_AND_OP_2 (xor,   , ^, u16, 2, 1)
+FETCH_AND_OP_2 (nand, ~, &, u16, 2, 1)
+
+FETCH_AND_OP_2 (add,   , +, u8, 1, 0)
+FETCH_AND_OP_2 (sub,   , -, u8, 1, 0)
+FETCH_AND_OP_2 (or,    , |, u8, 1, 0)
+FETCH_AND_OP_2 (and,   , &, u8, 1, 0)
+FETCH_AND_OP_2 (xor,   , ^, u8, 1, 0)
+FETCH_AND_OP_2 (nand, ~, &, u8, 1, 0)

  #define OP_AND_FETCH_2(OP, PFX_OP, INF_OP, TYPE, WIDTH, INDEX)		\
    TYPE HIDDEN								\
@@ -154,26 +162,26 @@  FETCH_AND_OP_2 (nand, ~, &, unsigned char, 1, 0)
      return PFX_OP (tmp INF_OP val);					\
    }

-OP_AND_FETCH_2 (add,   , +, long long unsigned int, 8, 3)
-OP_AND_FETCH_2 (sub,   , -, long long unsigned int, 8, 3)
-OP_AND_FETCH_2 (or,    , |, long long unsigned int, 8, 3)
-OP_AND_FETCH_2 (and,   , &, long long unsigned int, 8, 3)
-OP_AND_FETCH_2 (xor,   , ^, long long unsigned int, 8, 3)
-OP_AND_FETCH_2 (nand, ~, &, long long unsigned int, 8, 3)
-
-OP_AND_FETCH_2 (add,   , +, short unsigned int, 2, 1)
-OP_AND_FETCH_2 (sub,   , -, short unsigned int, 2, 1)
-OP_AND_FETCH_2 (or,    , |, short unsigned int, 2, 1)
-OP_AND_FETCH_2 (and,   , &, short unsigned int, 2, 1)
-OP_AND_FETCH_2 (xor,   , ^, short unsigned int, 2, 1)
-OP_AND_FETCH_2 (nand, ~, &, short unsigned int, 2, 1)
-
-OP_AND_FETCH_2 (add,   , +, unsigned char, 1, 0)
-OP_AND_FETCH_2 (sub,   , -, unsigned char, 1, 0)
-OP_AND_FETCH_2 (or,    , |, unsigned char, 1, 0)
-OP_AND_FETCH_2 (and,   , &, unsigned char, 1, 0)
-OP_AND_FETCH_2 (xor,   , ^, unsigned char, 1, 0)
-OP_AND_FETCH_2 (nand, ~, &, unsigned char, 1, 0)
+OP_AND_FETCH_2 (add,   , +, u64, 8, 3)
+OP_AND_FETCH_2 (sub,   , -, u64, 8, 3)
+OP_AND_FETCH_2 (or,    , |, u64, 8, 3)
+OP_AND_FETCH_2 (and,   , &, u64, 8, 3)
+OP_AND_FETCH_2 (xor,   , ^, u64, 8, 3)
+OP_AND_FETCH_2 (nand, ~, &, u64, 8, 3)
+
+OP_AND_FETCH_2 (add,   , +, u16, 2, 1)
+OP_AND_FETCH_2 (sub,   , -, u16, 2, 1)
+OP_AND_FETCH_2 (or,    , |, u16, 2, 1)
+OP_AND_FETCH_2 (and,   , &, u16, 2, 1)
+OP_AND_FETCH_2 (xor,   , ^, u16, 2, 1)
+OP_AND_FETCH_2 (nand, ~, &, u16, 2, 1)
+
+OP_AND_FETCH_2 (add,   , +, u8, 1, 0)
+OP_AND_FETCH_2 (sub,   , -, u8, 1, 0)
+OP_AND_FETCH_2 (or,    , |, u8, 1, 0)
+OP_AND_FETCH_2 (and,   , &, u8, 1, 0)
+OP_AND_FETCH_2 (xor,   , ^, u8, 1, 0)
+OP_AND_FETCH_2 (nand, ~, &, u8, 1, 0)

  #define FETCH_AND_OP_WORD(OP, PFX_OP, INF_OP)				\
    unsigned int HIDDEN							\
@@ -254,9 +262,9 @@  typedef unsigned char bool;
      return (failure == 0);						\
    }

-COMPARE_AND_SWAP_2 (long long unsigned int, 8, 3)
-COMPARE_AND_SWAP_2 (short unsigned int, 2, 1)
-COMPARE_AND_SWAP_2 (unsigned char, 1, 0)
+COMPARE_AND_SWAP_2 (u64, 8, 3)
+COMPARE_AND_SWAP_2 (u16, 2, 1)
+COMPARE_AND_SWAP_2 (u8, 1, 0)

  unsigned int HIDDEN
  __sync_val_compare_and_swap_4 (volatile void *ptr, unsigned int oldval,
@@ -304,9 +312,9 @@  TYPE HIDDEN								\
      return oldval;							\
    }

-SYNC_LOCK_TEST_AND_SET_2 (long long unsigned int, 8, 3)
-SYNC_LOCK_TEST_AND_SET_2 (short unsigned int, 2, 1)
-SYNC_LOCK_TEST_AND_SET_2 (unsigned char, 1, 0)
+SYNC_LOCK_TEST_AND_SET_2 (u64, 8, 3)
+SYNC_LOCK_TEST_AND_SET_2 (u16, 2, 1)
+SYNC_LOCK_TEST_AND_SET_2 (u8, 1, 0)

  unsigned int HIDDEN
  __sync_lock_test_and_set_4 (volatile void *ptr, unsigned int val)
@@ -336,9 +344,9 @@  __sync_lock_test_and_set_4 (volatile void *ptr, unsigned int val)
      } while (failure != 0);					\
    }

-SYNC_LOCK_RELEASE_1 (long long unsigned int, 8, 3)
-SYNC_LOCK_RELEASE_1 (short unsigned int, 2, 1)
-SYNC_LOCK_RELEASE_1 (unsigned char, 1, 0)
+SYNC_LOCK_RELEASE_1 (u64, 8, 3)
+SYNC_LOCK_RELEASE_1 (u16, 2, 1)
+SYNC_LOCK_RELEASE_1 (u8, 1, 0)

  void HIDDEN
  __sync_lock_release_4 (volatile void *ptr)
diff --git a/libgcc/config/pa/t-linux64 b/libgcc/config/pa/t-linux64
index 1d0a6ada1a1..026b48b02e5 100644
--- a/libgcc/config/pa/t-linux64
+++ b/libgcc/config/pa/t-linux64
@@ -1,8 +1,8 @@ 
  # Plug millicode routines into libgcc.a  We want these on both native and
  # cross compiles.
-# FIXME: Explain.
-LIB1ASMFUNCS := $(filter-out _dyncall, $(LIB1ASMFUNCS))
+LIB1ASMSRC = pa/milli64.S
+LIB1ASMFUNCS = _divI _divU _remI _remU _div_const _mulI

-LIB2ADD_ST = $(srcdir)/config/pa/linux-atomic.c
+HOST_LIBGCC2_CFLAGS += -Dpa64=1 -DELF=1 -DLINUX=1

-HOST_LIBGCC2_CFLAGS += -Dpa64=1 -DELF=1
+LIB2ADD_ST = $(srcdir)/config/pa/linux-atomic.c