diff options
Diffstat (limited to 'target/linux/etrax-2.6/patches/cris/006-gcc-4.patch')
| -rw-r--r-- | target/linux/etrax-2.6/patches/cris/006-gcc-4.patch | 599 |
1 files changed, 276 insertions, 323 deletions
diff --git a/target/linux/etrax-2.6/patches/cris/006-gcc-4.patch b/target/linux/etrax-2.6/patches/cris/006-gcc-4.patch index 31a4107707..a957632e2f 100644 --- a/target/linux/etrax-2.6/patches/cris/006-gcc-4.patch +++ b/target/linux/etrax-2.6/patches/cris/006-gcc-4.patch @@ -1,100 +1,10 @@ diff -urN linux-2.6.19.2.orig/arch/cris/arch-v10/lib/memset.c linux-2.6.19.2/arch/cris/arch-v10/lib/memset.c ---- linux-2.6.19.2.orig/arch/cris/arch-v10/lib/memset.c 2007-05-20 01:46:35.000000000 +0200 -+++ linux-2.6.19.2/arch/cris/arch-v10/lib/memset.c 2007-05-20 01:51:47.000000000 +0200 -@@ -29,224 +29,21 @@ - - #include <linux/types.h> - --/* No, there's no macro saying 12*4, since it is "hard" to get it into -- the asm in a good way. Thus better to expose the problem everywhere. -- */ - --/* Assuming 1 cycle per dword written or read (ok, not really true), and -- one per instruction, then 43+3*(n/48-1) <= 24+24*(n/48-1) -- so n >= 45.7; n >= 0.9; we win on the first full 48-byte block to set. */ -- --#define ZERO_BLOCK_SIZE (1*12*4) -- --void *memset(void *pdst, -- int c, -- size_t plen) -+/** -+ * memset - Fill a region of memory with the given value -+ * @s: Pointer to the start of the area. -+ * @c: The byte to fill the area with -+ * @count: The size of the area. -+ * -+ * Do not use memset() to access IO space, use memset_io() instead. -+ */ -+void *memset(void *s, int c, size_t count) - { -- /* Ok. Now we want the parameters put in special registers. -- Make sure the compiler is able to make something useful of this. */ -- -- register char *return_dst __asm__ ("r10") = pdst; -- register int n __asm__ ("r12") = plen; -- register int lc __asm__ ("r11") = c; -- -- /* Most apps use memset sanely. Only those memsetting about 3..4 -- bytes or less get penalized compared to the generic implementation -- - and that's not really sane use. */ -- -- /* Ugh. This is fragile at best. Check with newer GCC releases, if -- they compile cascaded "x |= x << 8" sanely! */ -- __asm__("movu.b %0,$r13\n\t" -- "lslq 8,$r13\n\t" -- "move.b %0,$r13\n\t" -- "move.d $r13,%0\n\t" -- "lslq 16,$r13\n\t" -- "or.d $r13,%0" -- : "=r" (lc) : "0" (lc) : "r13"); -- -- { -- register char *dst __asm__ ("r13") = pdst; -- -- /* This is NONPORTABLE, but since this whole routine is */ -- /* grossly nonportable that doesn't matter. */ -- -- if (((unsigned long) pdst & 3) != 0 -- /* Oops! n=0 must be a legal call, regardless of alignment. */ -- && n >= 3) -- { -- if ((unsigned long)dst & 1) -- { -- *dst = (char) lc; -- n--; -- dst++; -- } -- -- if ((unsigned long)dst & 2) -- { -- *(short *)dst = lc; -- n -= 2; -- dst += 2; -- } -- } -- -- /* Now the fun part. For the threshold value of this, check the equation -- above. */ -- /* Decide which copying method to use. */ -- if (n >= ZERO_BLOCK_SIZE) -- { -- /* For large copies we use 'movem' */ -- -- /* It is not optimal to tell the compiler about clobbering any -- registers; that will move the saving/restoring of those registers -- to the function prologue/epilogue, and make non-movem sizes -- suboptimal. -- -- This method is not foolproof; it assumes that the "asm reg" -- declarations at the beginning of the function really are used -- here (beware: they may be moved to temporary registers). -- This way, we do not have to save/move the registers around into -- temporaries; we can safely use them straight away. -- -- If you want to check that the allocation was right; then -- check the equalities in the first comment. It should say -- "r13=r13, r12=r12, r11=r11" */ +--- linux-2.6.19.2.orig/arch/cris/arch-v10/lib/memset.c 2007-06-03 13:59:39.000000000 +0200 ++++ linux-2.6.19.2/arch/cris/arch-v10/lib/memset.c 2007-06-03 14:11:43.000000000 +0200 +@@ -110,45 +110,28 @@ + If you want to check that the allocation was right; then + check the equalities in the first comment. It should say + "r13=r13, r12=r12, r11=r11" */ - __asm__ volatile (" - ;; Check that the following is true (same register names on - ;; both sides of equal sign, as in r8=r8): @@ -121,7 +31,28 @@ diff -urN linux-2.6.19.2.orig/arch/cris/arch-v10/lib/memset.c linux-2.6.19.2/arc - ;; Now we've got this: - ;; r13 - dst - ;; r12 - n -- ++ __asm__ volatile ( ++ "subq 11*4,$sp\n\t" ++ "movem $r10,[$sp]\n\t" ++ "move.d $r11,$r0\n\t" ++ "move.d $r11,$r1\n\t" ++ "move.d $r11,$r2\n\t" ++ "move.d $r11,$r3\n\t" ++ "move.d $r11,$r4\n\t" ++ "move.d $r11,$r5\n\t" ++ "move.d $r11,$r6\n\t" ++ "move.d $r11,$r7\n\t" ++ "move.d $r11,$r8\n\t" ++ "move.d $r11,$r9\n\t" ++ "move.d $r11,$r10\n\t" ++ "subq 12*4,$r12\n\t" ++"0:\n\t" ++ "subq 12*4,$r12\n\t" ++ "bge 0b\n\t" ++ "movem $r11,[$r13+]\n\t" ++ "addq 12*4,$r12\n\t" ++ "movem [$sp+],$r10" + - ;; Update n for the first loop - subq 12*4,$r12 -0: @@ -134,193 +65,159 @@ diff -urN linux-2.6.19.2.orig/arch/cris/arch-v10/lib/memset.c linux-2.6.19.2/arc - ;; Restore registers from stack - movem [$sp+],$r10" - -- /* Outputs */ : "=r" (dst), "=r" (n) -- /* Inputs */ : "0" (dst), "1" (n), "r" (lc)); -- -- } -- -- /* Either we directly starts copying, using dword copying -- in a loop, or we copy as much as possible with 'movem' -- and then the last block (<44 bytes) is copied here. -- This will work since 'movem' will have updated src,dst,n. */ -- -- while ( n >= 16 ) -- { + /* Outputs */ : "=r" (dst), "=r" (n) + /* Inputs */ : "0" (dst), "1" (n), "r" (lc)); + +@@ -161,10 +144,14 @@ + + while ( n >= 16 ) + { - *((long*)dst)++ = lc; - *((long*)dst)++ = lc; - *((long*)dst)++ = lc; - *((long*)dst)++ = lc; -- n -= 16; -- } -+ char *xs = s; ++ *((long*)dst) = lc; ++ dst+=4; ++ *((long*)dst) = lc; ++ dst+=4; ++ *((long*)dst) = lc; ++ dst+=4; ++ *((long*)dst) = lc; ++ dst+=4; + n -= 16; + } -- /* A switch() is definitely the fastest although it takes a LOT of code. -- * Particularly if you inline code this. -- */ -- switch (n) -- { -- case 0: -- break; -- case 1: -- *(char*)dst = (char) lc; -- break; -- case 2: -- *(short*)dst = (short) lc; -- break; -- case 3: +@@ -182,67 +169,95 @@ + *(short*)dst = (short) lc; + break; + case 3: - *((short*)dst)++ = (short) lc; -- *(char*)dst = (char) lc; -- break; -- case 4: ++ *((short*)dst) = (short) lc; ++ dst+=2; + *(char*)dst = (char) lc; + break; + case 4: - *((long*)dst)++ = lc; -- break; -- case 5: ++ *((long*)dst) = lc; ++ dst+=4; + break; + case 5: - *((long*)dst)++ = lc; -- *(char*)dst = (char) lc; -- break; -- case 6: ++ *((long*)dst) = lc; ++ dst+=4; + *(char*)dst = (char) lc; + break; + case 6: - *((long*)dst)++ = lc; -- *(short*)dst = (short) lc; -- break; -- case 7: ++ *((long*)dst) = lc; ++ dst+=4; + *(short*)dst = (short) lc; + break; + case 7: - *((long*)dst)++ = lc; - *((short*)dst)++ = (short) lc; -- *(char*)dst = (char) lc; -- break; -- case 8: ++ *((long*)dst) = lc; ++ dst+=4; ++ *((short*)dst) = (short) lc; ++ dst+=2; + *(char*)dst = (char) lc; + break; + case 8: - *((long*)dst)++ = lc; - *((long*)dst)++ = lc; -- break; -- case 9: ++ *((long*)dst) = lc; ++ dst+=4; ++ *((long*)dst) = lc; ++ dst+=4; + break; + case 9: - *((long*)dst)++ = lc; - *((long*)dst)++ = lc; -- *(char*)dst = (char) lc; -- break; -- case 10: ++ *((long*)dst) = lc; ++ dst+=4; ++ *((long*)dst) = lc; ++ dst+=4; + *(char*)dst = (char) lc; + break; + case 10: - *((long*)dst)++ = lc; - *((long*)dst)++ = lc; -- *(short*)dst = (short) lc; -- break; -- case 11: ++ *((long*)dst) = lc; ++ dst+=4; ++ *((long*)dst) = lc; ++ dst+=4; + *(short*)dst = (short) lc; + break; + case 11: - *((long*)dst)++ = lc; - *((long*)dst)++ = lc; - *((short*)dst)++ = (short) lc; -- *(char*)dst = (char) lc; -- break; -- case 12: ++ *((long*)dst) = lc; ++ dst+=4; ++ *((long*)dst) = lc; ++ dst+=4; ++ *((short*)dst) = (short) lc; ++ dst+=2; + *(char*)dst = (char) lc; + break; + case 12: - *((long*)dst)++ = lc; - *((long*)dst)++ = lc; - *((long*)dst)++ = lc; -- break; -- case 13: ++ *((long*)dst) = lc; ++ dst+=4; ++ *((long*)dst) = lc; ++ dst+=4; ++ *((long*)dst) = lc; ++ dst+=4; + break; + case 13: - *((long*)dst)++ = lc; - *((long*)dst)++ = lc; - *((long*)dst)++ = lc; -- *(char*)dst = (char) lc; -- break; -- case 14: ++ *((long*)dst) = lc; ++ dst+=4; ++ *((long*)dst) = lc; ++ dst+=4; ++ *((long*)dst) = lc; ++ dst+=4; + *(char*)dst = (char) lc; + break; + case 14: - *((long*)dst)++ = lc; - *((long*)dst)++ = lc; - *((long*)dst)++ = lc; -- *(short*)dst = (short) lc; -- break; -- case 15: ++ *((long*)dst) = lc; ++ dst+=4; ++ *((long*)dst) = lc; ++ dst+=4; ++ *((long*)dst) = lc; ++ dst+=4; + *(short*)dst = (short) lc; + break; + case 15: - *((long*)dst)++ = lc; - *((long*)dst)++ = lc; - *((long*)dst)++ = lc; - *((short*)dst)++ = (short) lc; -- *(char*)dst = (char) lc; -- break; -- } -- } -+ while (count--) -+ *xs++ = c; -+ return s; -+} - -- return return_dst; /* destination pointer. */ --} /* memset() */ ++ *((long*)dst) = lc; ++ dst+=4; ++ *((long*)dst) = lc; ++ dst+=4; ++ *((long*)dst) = lc; ++ dst+=4; ++ *((short*)dst) = (short) lc; ++ dst+=2; + *(char*)dst = (char) lc; + break; + } diff -urN linux-2.6.19.2.orig/arch/cris/arch-v10/lib/string.c linux-2.6.19.2/arch/cris/arch-v10/lib/string.c ---- linux-2.6.19.2.orig/arch/cris/arch-v10/lib/string.c 2007-05-20 01:46:35.000000000 +0200 -+++ linux-2.6.19.2/arch/cris/arch-v10/lib/string.c 2007-05-20 01:51:19.000000000 +0200 -@@ -33,193 +33,21 @@ - - #include <linux/types.h> - --void *memcpy(void *pdst, -- const void *psrc, -- size_t pn) -+ /** -+ * memcpy - Copy one area of memory to another -+ * @dest: Where to copy to -+ * @src: Where to copy from -+ * @count: The size of the area. -+ * -+ * You should not use this function to access IO space, use memcpy_toio() -+ * or memcpy_fromio() instead. -+ */ -+void *memcpy(void *dest, const void *src, size_t count) - { -- /* Ok. Now we want the parameters put in special registers. -- Make sure the compiler is able to make something useful of this. -- As it is now: r10 -> r13; r11 -> r11 (nop); r12 -> r12 (nop). -+ char *tmp = dest; -+ const char *s = src; - -- If gcc was allright, it really would need no temporaries, and no -- stack space to save stuff on. */ -- -- register void *return_dst __asm__ ("r10") = pdst; -- register char *dst __asm__ ("r13") = pdst; -- register const char *src __asm__ ("r11") = psrc; -- register int n __asm__ ("r12") = pn; -- -- -- /* When src is aligned but not dst, this makes a few extra needless -- cycles. I believe it would take as many to check that the -- re-alignment was unnecessary. */ -- if (((unsigned long) dst & 3) != 0 -- /* Don't align if we wouldn't copy more than a few bytes; so we -- don't have to check further for overflows. */ -- && n >= 3) -- { -- if ((unsigned long) dst & 1) -- { -- n--; -- *(char*)dst = *(char*)src; -- src++; -- dst++; -- } -- -- if ((unsigned long) dst & 2) -- { -- n -= 2; -- *(short*)dst = *(short*)src; -- src += 2; -- dst += 2; -- } -- } -- -- /* Decide which copying method to use. */ -- if (n >= 44*2) /* Break even between movem and -- move16 is at 38.7*2, but modulo 44. */ -- { -- /* For large copies we use 'movem' */ -- -- /* It is not optimal to tell the compiler about clobbering any -- registers; that will move the saving/restoring of those registers -- to the function prologue/epilogue, and make non-movem sizes -- suboptimal. -- -- This method is not foolproof; it assumes that the "asm reg" -- declarations at the beginning of the function really are used -- here (beware: they may be moved to temporary registers). -- This way, we do not have to save/move the registers around into -- temporaries; we can safely use them straight away. -- -- If you want to check that the allocation was right; then -- check the equalities in the first comment. It should say -- "r13=r13, r11=r11, r12=r12" */ +--- linux-2.6.19.2.orig/arch/cris/arch-v10/lib/string.c 2007-06-03 13:59:39.000000000 +0200 ++++ linux-2.6.19.2/arch/cris/arch-v10/lib/string.c 2007-06-03 14:21:02.000000000 +0200 +@@ -95,37 +95,19 @@ + If you want to check that the allocation was right; then + check the equalities in the first comment. It should say + "r13=r13, r11=r11, r12=r12" */ - __asm__ volatile (" - ;; Check that the following is true (same register names on - ;; both sides of equal sign, as in r8=r8): @@ -349,113 +246,169 @@ diff -urN linux-2.6.19.2.orig/arch/cris/arch-v10/lib/string.c linux-2.6.19.2/arc - ;; Restore registers from stack - movem [$sp+],$r10" - -- /* Outputs */ : "=r" (dst), "=r" (src), "=r" (n) -- /* Inputs */ : "0" (dst), "1" (src), "2" (n)); ++ __asm__ volatile ( ++ "subq 11*4,$sp\n\t" ++ "movem $r10,[$sp]\n\t" ++ "subq 44,$r12\n\t" ++"0:\n\t" ++ "movem [$r11+],$r10\n\t" ++ "subq 44,$r12\n\t" ++ "bge 0b\n\t" ++ "movem $r10,[$r13+]\n\t" ++ "addq 44,$r12\n\t" ++ "movem [$sp+],$r10\n\t" + /* Outputs */ : "=r" (dst), "=r" (src), "=r" (n) + /* Inputs */ : "0" (dst), "1" (src), "2" (n)); - -- } -- -- /* Either we directly starts copying, using dword copying -- in a loop, or we copy as much as possible with 'movem' -- and then the last block (<44 bytes) is copied here. -- This will work since 'movem' will have updated src,dst,n. */ -- -- while ( n >= 16 ) -- { + } + + /* Either we directly starts copying, using dword copying +@@ -135,10 +117,14 @@ + + while ( n >= 16 ) + { - *((long*)dst)++ = *((long*)src)++; - *((long*)dst)++ = *((long*)src)++; - *((long*)dst)++ = *((long*)src)++; - *((long*)dst)++ = *((long*)src)++; -- n -= 16; -- } -- -- /* A switch() is definitely the fastest although it takes a LOT of code. -- * Particularly if you inline code this. -- */ -- switch (n) -- { -- case 0: -- break; -- case 1: -- *(char*)dst = *(char*)src; -- break; -- case 2: -- *(short*)dst = *(short*)src; -- break; -- case 3: ++ *((long*)dst) = *((long*)src); ++ src+=4;dst+=4; ++ *((long*)dst) = *((long*)src); ++ src+=4;dst+=4; ++ *((long*)dst) = *((long*)src); ++ src+=4;dst+=4; ++ *((long*)dst) = *((long*)src); ++ src+=4;dst+=4; + n -= 16; + } + +@@ -156,67 +142,95 @@ + *(short*)dst = *(short*)src; + break; + case 3: - *((short*)dst)++ = *((short*)src)++; -- *(char*)dst = *(char*)src; -- break; -- case 4: ++ *((short*)dst) = *((short*)src); ++ src+=2;dst+=2; + *(char*)dst = *(char*)src; + break; + case 4: - *((long*)dst)++ = *((long*)src)++; -- break; -- case 5: ++ *((long*)dst) = *((long*)src); ++ src+=4;dst+=4; + break; + case 5: - *((long*)dst)++ = *((long*)src)++; -- *(char*)dst = *(char*)src; -- break; -- case 6: ++ *((long*)dst) = *((long*)src); ++ src+=4;dst+=4; + *(char*)dst = *(char*)src; + break; + case 6: - *((long*)dst)++ = *((long*)src)++; -- *(short*)dst = *(short*)src; -- break; -- case 7: ++ *((long*)dst) = *((long*)src); ++ src+=4;dst+=4; + *(short*)dst = *(short*)src; + break; + case 7: - *((long*)dst)++ = *((long*)src)++; - *((short*)dst)++ = *((short*)src)++; -- *(char*)dst = *(char*)src; -- break; -- case 8: ++ *((long*)dst) = *((long*)src); ++ src+=4;dst+=4; ++ *((short*)dst) = *((short*)src); ++ src+=2;dst+=2; + *(char*)dst = *(char*)src; + break; + case 8: - *((long*)dst)++ = *((long*)src)++; - *((long*)dst)++ = *((long*)src)++; -- break; -- case 9: ++ *((long*)dst) = *((long*)src); ++ src+=4;dst+=4; ++ *((long*)dst) = *((long*)src); ++ src+=4;dst+=4; + break; + case 9: - *((long*)dst)++ = *((long*)src)++; - *((long*)dst)++ = *((long*)src)++; -- *(char*)dst = *(char*)src; -- break; -- case 10: ++ *((long*)dst) = *((long*)src); ++ src+=4;dst+=4; ++ *((long*)dst) = *((long*)src); ++ src+=4;dst+=4; + *(char*)dst = *(char*)src; + break; + case 10: - *((long*)dst)++ = *((long*)src)++; - *((long*)dst)++ = *((long*)src)++; -- *(short*)dst = *(short*)src; -- break; -- case 11: ++ *((long*)dst) = *((long*)src); ++ src+=4;dst+=4; ++ *((long*)dst) = *((long*)src); ++ src+=4;dst+=4; + *(short*)dst = *(short*)src; + break; + case 11: - *((long*)dst)++ = *((long*)src)++; - *((long*)dst)++ = *((long*)src)++; - *((short*)dst)++ = *((short*)src)++; -- *(char*)dst = *(char*)src; -- break; -- case 12: ++ *((long*)dst) = *((long*)src); ++ src+=4;dst+=4; ++ *((long*)dst) = *((long*)src); ++ src+=4;dst+=4; ++ *((short*)dst) = *((short*)src); ++ src+=2;dst+=2; + *(char*)dst = *(char*)src; + break; + case 12: - *((long*)dst)++ = *((long*)src)++; - *((long*)dst)++ = *((long*)src)++; - *((long*)dst)++ = *((long*)src)++; -- break; -- case 13: ++ *((long*)dst) = *((long*)src); ++ src+=4;dst+=4; ++ *((long*)dst) = *((long*)src); ++ src+=4;dst+=4; ++ *((long*)dst) = *((long*)src); ++ src+=4;dst+=4; + break; + case 13: - *((long*)dst)++ = *((long*)src)++; - *((long*)dst)++ = *((long*)src)++; - *((long*)dst)++ = *((long*)src)++; -- *(char*)dst = *(char*)src; -- break; -- case 14: ++ *((long*)dst) = *((long*)src); ++ src+=4;dst+=4; ++ *((long*)dst) = *((long*)src); ++ src+=4;dst+=4; ++ *((long*)dst) = *((long*)src); ++ src+=4;dst+=4; + *(char*)dst = *(char*)src; + break; + case 14: - *((long*)dst)++ = *((long*)src)++; - *((long*)dst)++ = *((long*)src)++; - *((long*)dst)++ = *((long*)src)++; -- *(short*)dst = *(short*)src; -- break; -- case 15: ++ *((long*)dst) = *((long*)src); ++ src+=4;dst+=4; ++ *((long*)dst) = *((long*)src); ++ src+=4;dst+=4; ++ *((long*)dst) = *((long*)src); ++ src+=4;dst+=4; + *(short*)dst = *(short*)src; + break; + case 15: - *((long*)dst)++ = *((long*)src)++; - *((long*)dst)++ = *((long*)src)++; - *((long*)dst)++ = *((long*)src)++; - *((short*)dst)++ = *((short*)src)++; -- *(char*)dst = *(char*)src; -- break; -- } -- -- return return_dst; /* destination pointer. */ --} /* memcpy() */ -+ while (count--) -+ *tmp++ = *s++; -+ return dest; -+} ++ *((long*)dst) = *((long*)src); ++ src+=4;dst+=4; ++ *((long*)dst) = *((long*)src); ++ src+=4;dst+=4; ++ *((long*)dst) = *((long*)src); ++ src+=4;dst+=4; ++ *((short*)dst) = *((short*)src); ++ src+=2;dst+=2; + *(char*)dst = *(char*)src; + break; + } diff -urN linux-2.6.19.2.orig/arch/cris/arch-v10/lib/usercopy.c linux-2.6.19.2/arch/cris/arch-v10/lib/usercopy.c ---- linux-2.6.19.2.orig/arch/cris/arch-v10/lib/usercopy.c 2007-05-16 22:11:26.000000000 +0200 -+++ linux-2.6.19.2/arch/cris/arch-v10/lib/usercopy.c 2007-05-16 23:17:41.000000000 +0200 +--- linux-2.6.19.2.orig/arch/cris/arch-v10/lib/usercopy.c 2007-06-03 13:59:39.000000000 +0200 ++++ linux-2.6.19.2/arch/cris/arch-v10/lib/usercopy.c 2007-06-03 14:25:55.000000000 +0200 @@ -88,63 +88,38 @@ If you want to check that the allocation was right; then check the equalities in the first comment. It should say |