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i#6524: Fix udivmoddi4.c 32-bit linux build fail and semantics #6526

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merged 5 commits into from
Feb 13, 2024
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i#6524: Fix udivmoddi4.c 32-bit linux build fail and semantics #6526

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26ab5ce
i#6524 udivmoddi4.c build fail: Use same types as libgcc
xdje42 Dec 21, 2023
88b0c9e
Merge branch 'master' of github.com:DynamoRIO/dynamorio into i6524-ud…
xdje42 Feb 12, 2024
3acd297
Simplify, only update the int type typedefs
xdje42 Feb 12, 2024
92e2825
Update README.dynamorio and enumerate the targets
xdje42 Feb 12, 2024
936f936
Merge branch 'master' of github.com:DynamoRIO/dynamorio into i6524-ud…
xdje42 Feb 12, 2024
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12 changes: 7 additions & 5 deletions third_party/libgcc/README.dynamorio
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Original file line number Diff line number Diff line change
Expand Up @@ -50,11 +50,13 @@ as it breaks some old assemblers:

For udivmoddi4.c, it contains the __udivmoddi4 and __moddi3 functions extracted from
libgcc2.c with the following lines added:
> /* This is extracted from gcc's libgcc/libgcc2.c with these typedefs added: */
> typedef short Wtype;
> typedef int DWtype;
> typedef unsigned int UWtype;
> typedef unsigned long long UDWtype;
> /* This is extracted from gcc's libgcc/libgcc2.c with these typedefs added.
> Note that for current targets (x86, aarch, riscv - 32 and 64 bit)
> LIBGCC2_UNITS_PER_WORD == 4. Thus a double word is 8 bytes. */
> typedef int32_t Wtype;
> typedef int64_t DWtype;
> typedef uint32_t UWtype;
> typedef uint64_t UDWtype;
> #if __BYTE_ORDER__ != __ORDER_LITTLE_ENDIAN__
> struct DWstruct {Wtype high, low;};
> #else
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14 changes: 9 additions & 5 deletions third_party/libgcc/udivmoddi4.c
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Expand Up @@ -23,11 +23,15 @@ a copy of the GCC Runtime Library Exception along with this program;
see the files COPYING3 and COPYING.RUNTIME respectively. If not, see
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<http://www.gnu.org/licenses/>. */

/* This is extracted from gcc's libgcc/libgcc2.c with these typedefs added: */
typedef short Wtype;
typedef int DWtype;
typedef unsigned int UWtype;
typedef unsigned long long UDWtype;
#include <stdint.h>

/* This is extracted from gcc's libgcc/libgcc2.c with these typedefs added.
Note that for current targets (x86, aarch, riscv - 32 and 64 bit)
LIBGCC2_UNITS_PER_WORD == 4. Thus a double word is 8 bytes. */
typedef int32_t Wtype;
typedef int64_t DWtype;
typedef uint32_t UWtype;
typedef uint64_t UDWtype;
#if __BYTE_ORDER__ != __ORDER_LITTLE_ENDIAN__
struct DWstruct {Wtype high, low;};
#else
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