diff options
Diffstat (limited to 'libc')
35 files changed, 2398 insertions, 0 deletions
diff --git a/libc/string/metag/Makefile b/libc/string/metag/Makefile new file mode 100644 index 000000000..523cf6842 --- /dev/null +++ b/libc/string/metag/Makefile @@ -0,0 +1,13 @@ +# Makefile for uClibc +# +# Copyright (C) 2000-2005 Erik Andersen <andersen@uclibc.org> +# +# Licensed under the LGPL v2.1 or later, see the file COPYING.LIB in this tarball. +# + +top_srcdir:=../../../ +top_builddir:=../../../ +all: objs +include $(top_builddir)Rules.mak +include ../Makefile.in +include $(top_srcdir)Makerules diff --git a/libc/string/metag/memchr.S b/libc/string/metag/memchr.S new file mode 100644 index 000000000..8b48d863c --- /dev/null +++ b/libc/string/metag/memchr.S @@ -0,0 +1,156 @@ +! Copyright (C) 2013 Imagination Technologies Ltd. +! +! Licensed under LGPL v2.1 or later, see the file COPYING.LIB in this tarball. + + .text + .global _memchr + .type _memchr,function +! D0Ar6 src +! D0Ar2 c +! D1Ar3 n +_memchr: + CMP D1Ar3, #0 + BEQ $Lexit_fail + !! convert c to unsigned char + AND D0Ar2,D0Ar2,#0xff + MOV D0Ar6, D1Ar1 + MOV D1Ar5, D0Ar6 + !! test alignment + AND D1Ar5, D1Ar5, #7 + CMP D1Ar5, #0 + BNZ $Lunaligned_loop + !! length must be greater than or equal to 8 for aligned loop + CMP D1Ar3, #8 + BGE $Laligned_setup +$Lunaligned_loop: + !! get 1 char from s + GETB D0Re0, [D0Ar6++] + !! increase alignment counter + ADD D1Ar5, D1Ar5, #1 + !! decrement n + SUB D1Ar3, D1Ar3, #1 + !! exit if we have a match + CMP D0Re0, D0Ar2 + BZ $Lexit_success1 + !! exit if we have hit the end of the string + CMP D1Ar3, #0 + BZ $Lexit_fail + !! fall through if the buffer is aligned now + CMP D1Ar5, #8 + BNE $Lunaligned_loop + !! fall through if there is more than 8 bytes left + CMP D1Ar3, #8 + BLT $Lunaligned_loop +$Laligned_setup: + !! fill the c into 4 bytes + MOV D0Ar4, D0Ar2 + LSL D0Ar4, D0Ar4, #8 + ADD D0Ar4, D0Ar4, D0Ar2 + LSL D0Ar4, D0Ar4, #8 + ADD D0Ar4, D0Ar4, D0Ar2 + LSL D0Ar4, D0Ar4, #8 + ADD D0Ar4, D0Ar4, D0Ar2 + !! divide n by 8 + MOV D1Ar5, D1Ar3 + LSR D1Ar5, D1Ar5, #3 +$Laligned_loop: + !! get 8 chars from s + GETL D0Re0, D1Re0, [D0Ar6++] + !! decrement loop counter + SUB D1Ar5, D1Ar5, #1 + !! test first 4 chars + XOR D0Re0, D0Re0, D0Ar4 + !! test second 4 chars + MOV D0Ar2, D1Re0 + XOR D1Re0, D0Ar2, D0Ar4 + !! check for matches in the first 4 chars + MOV D0Ar2, D0Re0 + ADDT D0Re0, D0Re0, #HI(0xfefefeff) + ADD D0Re0, D0Re0, #LO(0xfefefeff) + XOR D0Ar2, D0Ar2, #-1 + AND D0Re0, D0Re0, D0Ar2 + ANDMT D0Re0, D0Re0, #HI(0x80808080) + ANDMB D0Re0, D0Re0, #LO(0x80808080) + CMP D0Re0, #0 + BNZ $Lmatch_word1 + !! check for matches in the second 4 chars + MOV D1Ar1, D1Re0 + ADDT D1Re0, D1Re0, #HI(0xfefefeff) + ADD D1Re0, D1Re0, #LO(0xfefefeff) + XOR D1Ar1, D1Ar1, #-1 + AND D1Re0, D1Re0, D1Ar1 + ANDMT D1Re0, D1Re0, #HI(0x80808080) + ANDMB D1Re0, D1Re0, #LO(0x80808080) + CMP D1Re0, #0 + BNZ $Lmatch_word2 + !! check if we have reached the end of the buffer + CMP D1Ar5, #0 + BNE $Laligned_loop + !! exit if there are no chars left to check + AND D1Ar3, D1Ar3, #7 + CMP D1Ar3, #0 + BZ $Lexit_fail + !! recover c + AND D0Ar2, D0Ar4, #0xff +$Lbyte_loop: + !! get 1 char from s + GETB D0Re0, [D0Ar6++] + !! decrement n + SUB D1Ar3, D1Ar3, #1 + !! exit if we have a match + CMP D0Re0, D0Ar2 + BZ $Lexit_success1 + !! fall through if we have run out of chars + CMP D1Ar3, #0 + BNE $Lbyte_loop + +$Lexit_fail: + MOV D0Re0, #0 + B $Lend + +$Lmatch_word1: + !! move the match word into D1Re0 + MOV D1Re0, D0Re0 + !! roll back the buffer pointer by 4 chars + SUB D0Ar6, D0Ar6, #4 +$Lmatch_word2: + !! roll back the buffer pointer by 4 chars + SUB D0Ar6, D0Ar6, #4 + !! exit if lowest byte is 0 + MOV D1Ar1, D1Re0 + AND D1Ar1, D1Ar1, #0xff + CMP D1Ar1, #0 + BNE $Lexit_success2 + !! advance buffer pointer to the next char + ADD D0Ar6, D0Ar6, #1 + !! shift in the next lowest byte + LSR D1Re0, D1Re0, #8 + !! exit if lowest byte is 0 + MOV D1Ar1, D1Re0 + AND D1Ar1, D1Ar1, #0xff + CMP D1Ar1, #0 + BNE $Lexit_success2 + !! advance buffer pointer to the next char + ADD D0Ar6, D0Ar6, #1 + !! shift in the next lowest byte + LSR D1Re0, D1Re0, #8 + !! exit if lowest byte is 0 + MOV D1Ar1, D1Re0 + AND D1Ar1, D1Ar1, #0xff + CMP D1Ar1, #0 + BNE $Lexit_success2 + !! the match must be in the last byte, exit + ADD D0Ar6, D0Ar6, #1 + B $Lexit_success2 + +$Lexit_success1: + SUB D0Ar6, D0Ar6, #1 +$Lexit_success2: + !! return the buffer pointer + MOV D0Re0, D0Ar6 +$Lend: + MOV PC, D1RtP + + .size _memchr,.-_memchr + +libc_hidden_def(memchr) diff --git a/libc/string/metag/memcpy.S b/libc/string/metag/memcpy.S new file mode 100644 index 000000000..f96c9d131 --- /dev/null +++ b/libc/string/metag/memcpy.S @@ -0,0 +1,189 @@ +! Copyright (C) 2013 Imagination Technologies Ltd. + +! Licensed under LGPL v2.1 or later, see the file COPYING.LIB in this tarball. + + .text + .global _memcpy + .type _memcpy,function +! D1Ar1 dst +! D0Ar2 src +! D1Ar3 cnt +! D0Re0 dst +_memcpy: + CMP D1Ar3, #16 + MOV A1.2, D0Ar2 ! source pointer + MOV A0.2, D1Ar1 ! destination pointer + MOV A0.3, D1Ar1 ! for return value +! If there are less than 16 bytes to copy use the byte copy loop + BGE $Llong_copy + +$Lbyte_copy: +! Simply copy a byte at a time + SUBS TXRPT, D1Ar3, #1 + BLT $Lend +$Lloop_byte: + GETB D1Re0, [A1.2++] + SETB [A0.2++], D1Re0 + BR $Lloop_byte + +$Lend: +! Finally set return value and return + MOV D0Re0, A0.3 + MOV PC, D1RtP + +$Llong_copy: + ANDS D1Ar5, D1Ar1, #7 ! test destination alignment + BZ $Laligned_dst + +! The destination address is not 8 byte aligned. We will copy bytes from +! the source to the destination until the remaining data has an 8 byte +! destination address alignment (i.e we should never copy more than 7 +! bytes here). +$Lalign_dst: + GETB D0Re0, [A1.2++] + ADD D1Ar5, D1Ar5, #1 ! dest is aligned when D1Ar5 reaches #8 + SUB D1Ar3, D1Ar3, #1 ! decrement count of remaining bytes + SETB [A0.2++], D0Re0 + CMP D1Ar5, #8 + BNE $Lalign_dst + +! We have at least (16 - 7) = 9 bytes to copy - calculate the number of 8 byte +! blocks, then jump to the unaligned copy loop or fall through to the aligned +! copy loop as appropriate. +$Laligned_dst: + MOV D0Ar4, A1.2 + LSR D1Ar5, D1Ar3, #3 ! D1Ar5 = number of 8 byte blocks + ANDS D0Ar4, D0Ar4, #7 ! test source alignment + BNZ $Lunaligned_copy ! if unaligned, use unaligned copy loop + +! Both source and destination are 8 byte aligned - the easy case. +$Laligned_copy: + LSRS D1Ar5, D1Ar3, #5 ! D1Ar5 = number of 32 byte blocks + BZ $Lbyte_copy + SUB TXRPT, D1Ar5, #1 + +$Laligned_32: + GETL D0Re0, D1Re0, [A1.2++] + GETL D0Ar6, D1Ar5, [A1.2++] + SETL [A0.2++], D0Re0, D1Re0 + SETL [A0.2++], D0Ar6, D1Ar5 + GETL D0Re0, D1Re0, [A1.2++] + GETL D0Ar6, D1Ar5, [A1.2++] + SETL [A0.2++], D0Re0, D1Re0 + SETL [A0.2++], D0Ar6, D1Ar5 + BR $Laligned_32 + +! If there are any remaining bytes use the byte copy loop, otherwise we are done + ANDS D1Ar3, D1Ar3, #0x1f + BNZ $Lbyte_copy + B $Lend + +! The destination is 8 byte aligned but the source is not, and there are 8 +! or more bytes to be copied. +$Lunaligned_copy: +! Adjust the source pointer (A1.2) to the 8 byte boundary before its +! current value + MOV D0Ar4, A1.2 + MOV D0Ar6, A1.2 + ANDMB D0Ar4, D0Ar4, #0xfff8 + MOV A1.2, D0Ar4 +! Save the number of bytes of mis-alignment in D0Ar4 for use later + SUBS D0Ar6, D0Ar6, D0Ar4 + MOV D0Ar4, D0Ar6 +! if there is no mis-alignment after all, use the aligned copy loop + BZ $Laligned_copy + +! prefetch 8 bytes + GETL D0Re0, D1Re0, [A1.2] + + SUB TXRPT, D1Ar5, #1 + +! There are 3 mis-alignment cases to be considered. Less than 4 bytes, exactly +! 4 bytes, and more than 4 bytes. + CMP D0Ar6, #4 + BLT $Lunaligned_1_2_3 ! use 1-3 byte mis-alignment loop + BZ $Lunaligned_4 ! use 4 byte mis-alignment loop + +! The mis-alignment is more than 4 bytes +$Lunaligned_5_6_7: + SUB D0Ar6, D0Ar6, #4 +! Calculate the bit offsets required for the shift operations necesssary +! to align the data. +! D0Ar6 = bit offset, D1Ar5 = (32 - bit offset) + MULW D0Ar6, D0Ar6, #8 + MOV D1Ar5, #32 + SUB D1Ar5, D1Ar5, D0Ar6 +! Move data 4 bytes before we enter the main loop + MOV D0Re0, D1Re0 + +$Lloop_5_6_7: + GETL D0Ar2, D1Ar1, [++A1.2] +! form 64-bit data in D0Re0, D1Re0 + LSR D0Re0, D0Re0, D0Ar6 + MOV D1Re0, D0Ar2 + LSL D1Re0, D1Re0, D1Ar5 + ADD D0Re0, D0Re0, D1Re0 + + LSR D0Ar2, D0Ar2, D0Ar6 + LSL D1Re0, D1Ar1, D1Ar5 + ADD D1Re0, D1Re0, D0Ar2 + + SETL [A0.2++], D0Re0, D1Re0 + MOV D0Re0, D1Ar1 + BR $Lloop_5_6_7 + + B $Lunaligned_end + +$Lunaligned_1_2_3: +! Calculate the bit offsets required for the shift operations necesssary +! to align the data. +! D0Ar6 = bit offset, D1Ar5 = (32 - bit offset) + MULW D0Ar6, D0Ar6, #8 + MOV D1Ar5, #32 + SUB D1Ar5, D1Ar5, D0Ar6 + +$Lloop_1_2_3: +! form 64-bit data in D0Re0,D1Re0 + LSR D0Re0, D0Re0, D0Ar6 + LSL D1Ar1, D1Re0, D1Ar5 + ADD D0Re0, D0Re0, D1Ar1 + MOV D0Ar2, D1Re0 + LSR D0FrT, D0Ar2, D0Ar6 + GETL D0Ar2, D1Ar1, [++A1.2] + + MOV D1Re0, D0Ar2 + LSL D1Re0, D1Re0, D1Ar5 + ADD D1Re0, D1Re0, D0FrT + + SETL [A0.2++], D0Re0, D1Re0 + MOV D0Re0, D0Ar2 + MOV D1Re0, D1Ar1 + BR $Lloop_1_2_3 + + B $Lunaligned_end + +! The 4 byte mis-alignment case - this does not require any shifting, just a +! shuffling of registers. +$Lunaligned_4: + MOV D0Re0, D1Re0 +$Lloop_4: + GETL D0Ar2, D1Ar1, [++A1.2] + MOV D1Re0, D0Ar2 + SETL [A0.2++], D0Re0, D1Re0 + MOV D0Re0, D1Ar1 + BR $Lloop_4 + +$Lunaligned_end: +! If there are no remaining bytes to copy, we are done. + ANDS D1Ar3, D1Ar3, #7 + BZ $Lend +! Re-adjust the source pointer (A1.2) back to the actual (unaligned) byte +! address of the remaining bytes, and fall through to the byte copy loop. + MOV D0Ar6, A1.2 + ADD D1Ar5, D0Ar4, D0Ar6 + MOV A1.2, D1Ar5 + B $Lbyte_copy + + .size _memcpy,.-_memcpy + +libc_hidden_def(memcpy) diff --git a/libc/string/metag/memmove.S b/libc/string/metag/memmove.S new file mode 100644 index 000000000..3416fd558 --- /dev/null +++ b/libc/string/metag/memmove.S @@ -0,0 +1,350 @@ +! Copyright (C) 2013 Imagination Technologies Ltd. + +! Licensed under LGPL v2.1 or later, see the file COPYING.LIB in this tarball. + + + .text + .global _memmove + .type _memmove,function +! D1Ar1 dst +! D0Ar2 src +! D1Ar3 cnt +! D0Re0 dst +_memmove: + CMP D1Ar3, #0 + MOV D0Re0, D1Ar1 + BZ $LEND2 + MSETL [A0StP], D0.5, D0.6, D0.7 + MOV D1Ar5, D0Ar2 + CMP D1Ar1, D1Ar5 + BLT $Lforwards_copy + SUB D0Ar4, D1Ar1, D1Ar3 + ADD D0Ar4, D0Ar4, #1 + CMP D0Ar2, D0Ar4 + BLT $Lforwards_copy + ! should copy backwards + MOV D1Re0, D0Ar2 + ! adjust pointer to the end of mem + ADD D0Ar2, D1Re0, D1Ar3 + ADD D1Ar1, D1Ar1, D1Ar3 + + MOV A1.2, D0Ar2 + MOV A0.2, D1Ar1 + CMP D1Ar3, #8 + BLT $Lbbyte_loop + + MOV D0Ar4, D0Ar2 + MOV D1Ar5, D1Ar1 + + ! test 8 byte alignment + ANDS D1Ar5, D1Ar5, #7 + BNE $Lbdest_unaligned + + ANDS D0Ar4, D0Ar4, #7 + BNE $Lbsrc_unaligned + + LSR D1Ar5, D1Ar3, #3 + +$Lbaligned_loop: + GETL D0Re0, D1Re0, [--A1.2] + SETL [--A0.2], D0Re0, D1Re0 + SUBS D1Ar5, D1Ar5, #1 + BNE $Lbaligned_loop + + ANDS D1Ar3, D1Ar3, #7 + BZ $Lbbyte_loop_exit +$Lbbyte_loop: + GETB D1Re0, [--A1.2] + SETB [--A0.2], D1Re0 + SUBS D1Ar3, D1Ar3, #1 + BNE $Lbbyte_loop +$Lbbyte_loop_exit: + MOV D0Re0, A0.2 +$LEND: + SUB A0.2, A0StP, #24 + MGETL D0.5, D0.6, D0.7, [A0.2] + SUB A0StP, A0StP, #24 +$LEND2: + MOV PC, D1RtP + +$Lbdest_unaligned: + GETB D0Re0, [--A1.2] + SETB [--A0.2], D0Re0 + SUBS D1Ar5, D1Ar5, #1 + SUB D1Ar3, D1Ar3, #1 + BNE $Lbdest_unaligned + CMP D1Ar3, #8 + BLT $Lbbyte_loop +$Lbsrc_unaligned: + LSR D1Ar5, D1Ar3, #3 + ! adjust A1.2 + MOV D0Ar4, A1.2 + ! save original address + MOV D0Ar6, A1.2 + + ADD D0Ar4, D0Ar4, #7 + ANDMB D0Ar4, D0Ar4, #0xfff8 + ! new address is the 8-byte aligned one above the original + MOV A1.2, D0Ar4 + + ! A0.2 dst 64-bit is aligned + ! measure the gap size + SUB D0Ar6, D0Ar4, D0Ar6 + MOVS D0Ar4, D0Ar6 + ! keep this information for the later adjustment + ! both aligned + BZ $Lbaligned_loop + + ! prefetch + GETL D0Re0, D1Re0, [--A1.2] + + CMP D0Ar6, #4 + BLT $Lbunaligned_1_2_3 + ! 32-bit aligned + BZ $Lbaligned_4 + + SUB D0Ar6, D0Ar6, #4 + ! D1.6 stores the gap size in bits + MULW D1.6, D0Ar6, #8 + MOV D0.6, #32 + ! D0.6 stores the complement of the gap size + SUB D0.6, D0.6, D1.6 + +$Lbunaligned_5_6_7: + GETL D0.7, D1.7, [--A1.2] + ! form 64-bit data in D0Re0, D1Re0 + MOV D1Re0, D0Re0 + ! D1Re0 << gap-size + LSL D1Re0, D1Re0, D1.6 + MOV D0Re0, D1.7 + ! D0Re0 >> complement + LSR D0Re0, D0Re0, D0.6 + MOV D1.5, D0Re0 + ! combine the both + ADD D1Re0, D1Re0, D1.5 + + MOV D1.5, D1.7 + LSL D1.5, D1.5, D1.6 + MOV D0Re0, D0.7 + LSR D0Re0, D0Re0, D0.6 + MOV D0.5, D1.5 + ADD D0Re0, D0Re0, D0.5 + + SETL [--A0.2], D0Re0, D1Re0 + MOV D0Re0, D0.7 + MOV D1Re0, D1.7 + SUBS D1Ar5, D1Ar5, #1 + BNE $Lbunaligned_5_6_7 + + ANDS D1Ar3, D1Ar3, #7 + BZ $Lbbyte_loop_exit + ! Adjust A1.2 + ! A1.2 <- A1.2 +8 - gapsize + ADD A1.2, A1.2, #8 + SUB A1.2, A1.2, D0Ar4 + B $Lbbyte_loop + +$Lbunaligned_1_2_3: + MULW D1.6, D0Ar6, #8 + MOV D0.6, #32 + SUB D0.6, D0.6, D1.6 + +$Lbunaligned_1_2_3_loop: + GETL D0.7, D1.7, [--A1.2] + ! form 64-bit data in D0Re0, D1Re0 + LSL D1Re0, D1Re0, D1.6 + ! save D0Re0 for later use + MOV D0.5, D0Re0 + LSR D0Re0, D0Re0, D0.6 + MOV D1.5, D0Re0 + ADD D1Re0, D1Re0, D1.5 + + ! orignal data in D0Re0 + MOV D1.5, D0.5 + LSL D1.5, D1.5, D1.6 + MOV D0Re0, D1.7 + LSR D0Re0, D0Re0, D0.6 + MOV D0.5, D1.5 + ADD D0Re0, D0Re0, D0.5 + + SETL [--A0.2], D0Re0, D1Re0 + MOV D0Re0, D0.7 + MOV D1Re0, D1.7 + SUBS D1Ar5, D1Ar5, #1 + BNE $Lbunaligned_1_2_3_loop + + ANDS D1Ar3, D1Ar3, #7 + BZ $Lbbyte_loop_exit + ! Adjust A1.2 + ADD A1.2, A1.2, #8 + SUB A1.2, A1.2, D0Ar4 + B $Lbbyte_loop + +$Lbaligned_4: + GETL D0.7, D1.7, [--A1.2] + MOV D1Re0, D0Re0 + MOV D0Re0, D1.7 + SETL [--A0.2], D0Re0, D1Re0 + MOV D0Re0, D0.7 + MOV D1Re0, D1.7 + SUBS D1Ar5, D1Ar5, #1 + BNE $Lbaligned_4 + ANDS D1Ar3, D1Ar3, #7 + BZ $Lbbyte_loop_exit + ! Adjust A1.2 + ADD A1.2, A1.2, #8 + SUB A1.2, A1.2, D0Ar4 + B $Lbbyte_loop + +$Lforwards_copy: + MOV A1.2, D0Ar2 + MOV A0.2, D1Ar1 + CMP D1Ar3, #8 + BLT $Lfbyte_loop + + MOV D0Ar4, D0Ar2 + MOV D1Ar5, D1Ar1 + + ANDS D1Ar5, D1Ar5, #7 + BNE $Lfdest_unaligned + + ANDS D0Ar4, D0Ar4, #7 + BNE $Lfsrc_unaligned + + LSR D1Ar5, D1Ar3, #3 + +$Lfaligned_loop: + GETL D0Re0, D1Re0, [A1.2++] + SUBS D1Ar5, D1Ar5, #1 + SETL [A0.2++], D0Re0, D1Re0 + BNE $Lfaligned_loop + + ANDS D1Ar3, D1Ar3, #7 + BZ $Lfbyte_loop_exit +$Lfbyte_loop: + GETB D1Re0, [A1.2++] + SETB [A0.2++], D1Re0 + SUBS D1Ar3, D1Ar3, #1 + BNE $Lfbyte_loop +$Lfbyte_loop_exit: + MOV D0Re0, D1Ar1 + B $LEND + +$Lfdest_unaligned: + GETB D0Re0, [A1.2++] + ADD D1Ar5, D1Ar5, #1 + SUB D1Ar3, D1Ar3, #1 + SETB [A0.2++], D0Re0 + CMP D1Ar5, #8 + BNE $Lfdest_unaligned + CMP D1Ar3, #8 + BLT $Lfbyte_loop +$Lfsrc_unaligned: + ! adjust A1.2 + LSR D1Ar5, D1Ar3, #3 + + MOV D0Ar4, A1.2 + MOV D0Ar6, A1.2 + ANDMB D0Ar4, D0Ar4, #0xfff8 + MOV A1.2, D0Ar4 + + ! A0.2 dst 64-bit is aligned + SUB D0Ar6, D0Ar6, D0Ar4 + ! keep the information for the later adjustment + MOVS D0Ar4, D0Ar6 + + ! both aligned + BZ $Lfaligned_loop + + ! prefetch + GETL D0Re0, D1Re0, [A1.2] + + CMP D0Ar6, #4 + BLT $Lfunaligned_1_2_3 + BZ $Lfaligned_4 + + SUB D0Ar6, D0Ar6, #4 + MULW D0.6, D0Ar6, #8 + MOV D1.6, #32 + SUB D1.6, D1.6, D0.6 + +$Lfunaligned_5_6_7: + GETL D0.7, D1.7, [++A1.2] + ! form 64-bit data in D0Re0, D1Re0 + MOV D0Re0, D1Re0 + LSR D0Re0, D0Re0, D0.6 + MOV D1Re0, D0.7 + LSL D1Re0, D1Re0, D1.6 + MOV D0.5, D1Re0 + ADD D0Re0, D0Re0, D0.5 + + MOV D0.5, D0.7 + LSR D0.5, D0.5, D0.6 + MOV D1Re0, D1.7 + LSL D1Re0, D1Re0, D1.6 + MOV D1.5, D0.5 + ADD D1Re0, D1Re0, D1.5 + + SETL [A0.2++], D0Re0, D1Re0 + MOV D0Re0, D0.7 + MOV D1Re0, D1.7 + SUBS D1Ar5, D1Ar5, #1 + BNE $Lfunaligned_5_6_7 + + ANDS D1Ar3, D1Ar3, #7 + BZ $Lfbyte_loop_exit + ! Adjust A1.2 + ADD A1.2, A1.2, D0Ar4 + B $Lfbyte_loop + +$Lfunaligned_1_2_3: + MULW D0.6, D0Ar6, #8 + MOV D1.6, #32 + SUB D1.6, D1.6, D0.6 + +$Lfunaligned_1_2_3_loop: + GETL D0.7, D1.7, [++A1.2] + ! form 64-bit data in D0Re0, D1Re0 + LSR D0Re0, D0Re0, D0.6 + MOV D1.5, D1Re0 + LSL D1Re0, D1Re0, D1.6 + MOV D0.5, D1Re0 + ADD D0Re0, D0Re0, D0.5 + + MOV D0.5, D1.5 + LSR D0.5, D0.5, D0.6 + MOV D1Re0, D0.7 + LSL D1Re0, D1Re0, D1.6 + MOV D1.5, D0.5 + ADD D1Re0, D1Re0, D1.5 + + SETL [A0.2++], D0Re0, D1Re0 + MOV D0Re0, D0.7 + MOV D1Re0, D1.7 + SUBS D1Ar5, D1Ar5, #1 + BNE $Lfunaligned_1_2_3_loop + + ANDS D1Ar3, D1Ar3, #7 + BZ $Lfbyte_loop_exit + ! Adjust A1.2 + ADD A1.2, A1.2, D0Ar4 + B $Lfbyte_loop + +$Lfaligned_4: + GETL D0.7, D1.7, [++A1.2] + MOV D0Re0, D1Re0 + MOV D1Re0, D0.7 + SETL [A0.2++], D0Re0, D1Re0 + MOV D0Re0, D0.7 + MOV D1Re0, D1.7 + SUBS D1Ar5, D1Ar5, #1 + BNE $Lfaligned_4 + ANDS D1Ar3, D1Ar3, #7 + BZ $Lfbyte_loop_exit + ! Adjust A1.2 + ADD A1.2, A1.2, D0Ar4 + B $Lfbyte_loop + + .size _memmove,.-_memmove + +libc_hidden_def(memmove) diff --git a/libc/string/metag/memset.S b/libc/string/metag/memset.S new file mode 100644 index 000000000..8d4e9a158 --- /dev/null +++ b/libc/string/metag/memset.S @@ -0,0 +1,90 @@ +! Copyright (C) 2013 Imagination Technologies Ltd. + +! Licensed under LGPL v2.1 or later, see the file COPYING.LIB in this tarball. + + + .text + .global _memset + .type _memset,function +! D1Ar1 dst +! D0Ar2 c +! D1Ar3 cnt +! D0Re0 dst +_memset: + AND D0Ar2,D0Ar2,#0xFF ! Ensure a byte input value + MULW D0Ar2,D0Ar2,#0x0101 ! Duplicate byte value into 0-15 + ANDS D0Ar4,D1Ar1,#7 ! Extract bottom LSBs of dst + LSL D0Re0,D0Ar2,#16 ! Duplicate byte value into 16-31 + ADD A0.2,D0Ar2,D0Re0 ! Duplicate byte value into 4 (A0.2) + MOV D0Re0,D1Ar1 ! Return dst + BZ $LLongStub ! if start address is aligned + ! start address is not aligned on an 8 byte boundary, so we + ! need the number of bytes up to the next 8 byte address + ! boundary, or the length of the string if less than 8, in D1Ar5 + MOV D0Ar2,#8 ! Need 8 - N in D1Ar5 ... + SUB D1Ar5,D0Ar2,D0Ar4 ! ... subtract N + CMP D1Ar3,D1Ar5 + MOVMI D1Ar5,D1Ar3 + B $LByteStub ! dst is mis-aligned, do $LByteStub + +! +! Preamble to LongLoop which generates 4*8 bytes per interation (5 cycles) +! +$LLongStub: + LSRS D0Ar2,D1Ar3,#5 + AND D1Ar3,D1Ar3,#0x1F + MOV A1.2,A0.2 + BEQ $LLongishStub + SUB TXRPT,D0Ar2,#1 + CMP D1Ar3,#0 +$LLongLoop: + SETL [D1Ar1++],A0.2,A1.2 + SETL [D1Ar1++],A0.2,A1.2 + SETL [D1Ar1++],A0.2,A1.2 + SETL [D1Ar1++],A0.2,A1.2 + BR $LLongLoop + BZ $Lexit +! +! Preamble to LongishLoop which generates 1*8 bytes per interation (2 cycles) +! +$LLongishStub: + LSRS D0Ar2,D1Ar3,#3 + AND D1Ar3,D1Ar3,#0x7 + MOV D1Ar5,D1Ar3 + BEQ $LByteStub + SUB TXRPT,D0Ar2,#1 + CMP D1Ar3,#0 +$LLongishLoop: + SETL [D1Ar1++],A0.2,A1.2 + BR $LLongishLoop + BZ $Lexit +! +! This does a byte structured burst of up to 7 bytes +! +! D1Ar1 should point to the location required +! D1Ar3 should be the remaining total byte count +! D1Ar5 should be burst size (<= D1Ar3) +! +$LByteStub: + SUBS D1Ar3,D1Ar3,D1Ar5 ! Reduce count + ADD D1Ar1,D1Ar1,D1Ar5 ! Advance pointer to end of area + MULW D1Ar5,D1Ar5,#4 ! Scale to (1*4), (2*4), (3*4) + SUB D1Ar5,D1Ar5,#(8*4) ! Rebase to -(7*4), -(6*4), -(5*4), ... + MOV A1.2,D1Ar5 + SUB PC,CPC1,A1.2 ! Jump into table below + SETB [D1Ar1+#(-7)],A0.2 + SETB [D1Ar1+#(-6)],A0.2 + SETB [D1Ar1+#(-5)],A0.2 + SETB [D1Ar1+#(-4)],A0.2 + SETB [D1Ar1+#(-3)],A0.2 + SETB [D1Ar1+#(-2)],A0.2 + SETB [D1Ar1+#(-1)],A0.2 +! +! Return if all data has been output, otherwise do $LLongStub +! + BNZ $LLongStub +$Lexit: + MOV PC,D1RtP + .size _memset,.-_memset + +libc_hidden_def(memset) diff --git a/libc/string/metag/strchr.S b/libc/string/metag/strchr.S new file mode 100644 index 000000000..6b0f2ea43 --- /dev/null +++ b/libc/string/metag/strchr.S @@ -0,0 +1,167 @@ +! Copyright (C) 2013 Imagination Technologies Ltd. + +! Licensed under LGPL v2.1 or later, see the file COPYING.LIB in this tarball. + + +#include <features.h> + + .text + .global _strchr + .type _strchr, function +! D1Ar1 src +! D0Ar2 c +_strchr: + AND D0Ar2,D0Ar2,#0xff ! Drop all but 8 bits of c + MOV D1Ar5, D1Ar1 ! Copy src to D1Ar5 + AND D1Ar5, D1Ar5, #7 ! Check 64 bit alignment + CMP D1Ar5, #0 + BZ $Laligned64bit ! Jump to 64 bit aligned strchr +$Lalign64bit: + GETB D0Re0, [D1Ar1++] ! Get the next character + ADD D1Ar5, D1Ar5, #1 ! Increment alignment counter + CMP D0Re0, D0Ar2 ! Is the char c + BZ $Lcharatprevious ! If so exit returning position + CMP D0Re0, #0 ! End of string? + BZ $Lnotfound ! If so exit + CMP D1Ar5, #8 ! Are we aligned 64bit yet? + BNZ $Lalign64bit ! If not keep aligning +$Laligned64bit: ! src is 64bit aligned + MOV D0Ar4, D0Ar2 ! put c into D0Ar4 + LSL D0Ar4, D0Ar4, #8 ! Shift it up + ADD D0Ar4, D0Ar4, D0Ar2 ! another c + LSL D0Ar4, D0Ar4, #8 ! shift + ADD D0Ar4, D0Ar4, D0Ar2 ! another c + LSL D0Ar4, D0Ar4, #8 ! shift + ADD D0Ar4, D0Ar4, D0Ar2 ! 4 copies of c +$Lcheck8bytes: + GETL D0Re0, D1Re0, [D1Ar1++] ! grab 16 bytes + MOV A0.3, D0Re0 ! save for later use + ! first word + ! check for \0 + MOV D0Ar2, D0Re0 ! D0Ar2 is a scratch now + ADDT D0Re0, D0Re0, #HI(0xfefefeff) ! Do 4 1-byte compares + ADD D0Re0, D0Re0, #LO(0xfefefeff) + XOR D0Ar2, D0Ar2, #-1 + AND D0Re0, D0Re0, D0Ar2 + ANDMT D0Re0, D0Re0, #HI(0x80808080) + ANDMB D0Re0, D0Re0, #LO(0x80808080) + CMP D0Re0, #0 + BNZ $Lnullinword1 ! found \0 (or c if c==\0) + + ! Check for c + MOV D0Re0, A0.3 ! restore the first word + XOR D0Re0, D0Re0, D0Ar4 + MOV D0Ar2, D0Re0 ! DO 4 1-byte compares + ADDT D0Re0, D0Re0, #HI(0xfefefeff) + ADD D0Re0, D0Re0, #LO(0xfefefeff) + XOR D0Ar2, D0Ar2, #-1 + AND D0Re0, D0Re0, D0Ar2 + ANDMT D0Re0, D0Re0, #HI(0x80808080) + ANDMB D0Re0, D0Re0, #LO(0x80808080) + CMP D0Re0, #0 + BNZ $Lcharinword1 ! found c + + ! second word + ! check for \0 + MOV A0.3, D1Re0 ! save for later use + MOV D1Ar3, D1Re0 + ADDT D1Re0, D1Re0, #HI(0xfefefeff) ! Do 4 1-byte compares + ADD D1Re0, D1Re0, #LO(0xfefefeff) + XOR D1Ar3, D1Ar3, #-1 + AND D1Re0, D1Re0, D1Ar3 + ANDMT D1Re0, D1Re0, #HI(0x80808080) + ANDMB D1Re0, D1Re0, #LO(0x80808080) + CMP D1Re0, #0 + BNZ $Lnullinword2 ! Found \0 (or c if c==\0) + + MOV D0.4, A0.3 ! restore the second word + XOR D1Re0, D0.4, D0Ar4 ! test c + + MOV D1Ar3, D1Re0 + ADDT D1Re0, D1Re0, #HI(0xfefefeff) ! Do 4 1-byte compares + ADD D1Re0, D1Re0, #LO(0xfefefeff) + XOR D1Ar3, D1Ar3, #-1 + AND D1Re0, D1Re0, D1Ar3 + ANDMT D1Re0, D1Re0, #HI(0x80808080) + ANDMB D1Re0, D1Re0, #LO(0x80808080) + CMP D1Re0, #0 + BNZ $Lcharinword2 ! found c + + B $Lcheck8bytes ! Keep checking + +$Lnullinword1: ! found \0 somewhere, check for c too + SUB D1Ar1, D1Ar1, #4 +$Lnullinword2: + SUB D1Ar1, D1Ar1, #4 + AND D0Ar2, D0Ar4, #0xff ! restore c + MOV D0Re0, A0.3 ! restore the word + MOV D0.4, D0Re0 ! for shifting later + AND D0Re0, D0Re0, #0xff ! take first byte of word + CMP D0Re0, D0Ar2 + BZ $Lcharatcurrent ! found c + CMP D0Re0, #0! + BZ $Lnotfound ! found \0 + + ADD D1Ar1, D1Ar1, #1 + LSR D0.4, D0.4, #8 + MOV D0Re0, D0.4 + AND D0Re0, D0Re0, #0xff ! take second byte of word + CMP D0Re0, D0Ar2 + BZ $Lcharatcurrent ! found c + CMP D0Re0, #0 + BZ $Lnotfound ! found \0 + + ADD D1Ar1, D1Ar1, #1 + LSR D0.4, D0.4, #8 + MOV D0Re0, D0.4 + AND D0Re0, D0Re0, #0xff ! take third byte of word + CMP D0Re0, D0Ar2 + BZ $Lcharatcurrent ! found c + CMP D0Re0, #0 + BZ $Lnotfound ! found \0 + + ADD D1Ar1, D1Ar1, #1 ! move to 4th byte + CMP D0Ar2, #0 ! If c was \0 + BZ $Lcharatcurrent ! c has been found! + +$Lnotfound: + MOV D0Re0, #0 ! End of string c not found + B $Lend + +$Lcharinword1: ! found c in first word + MOV D1Re0, D0Re0 + SUB D1Ar1, D1Ar1, #4 +$Lcharinword2: ! found c in second word + SUB D1Ar1, D1Ar1, #4 + + AND D0Re0, D1Re0, #0xff ! First byte + CMP D0Re0, #0 ! Test c (zero indicates c due + ! to the 4 1-byte compare code) + BNE $Lcharatcurrent + ADD D1Ar1, D1Ar1, #1 + + LSR D1Re0, D1Re0, #8 + AND D0Re0, D1Re0, #0xff ! Second byte + CMP D0Re0, #0 ! Test c (indicated by zero) + BNE $Lcharatcurrent + ADD D1Ar1, D1Ar1, #1 + + LSR D1Re0, D1Re0, #8 + AND D0Re0, D1Re0, #0xff ! Third byte + CMP D0Re0, #0 ! Test c (indicated by zero) + BNE $Lcharatcurrent + ADD D1Ar1, D1Ar1, #1 ! Must be the fourth byte + B $Lcharatcurrent + +$Lcharatprevious: + SUB D1Ar1, D1Ar1, #1 ! Fix-up pointer +$Lcharatcurrent: + MOV D0Re0, D1Ar1 ! Return the string pointer +$Lend: + MOV PC, D1RtP + .size _strchr,.-_strchr + +libc_hidden_def(strchr) +#ifdef __UCLIBC_SUSV3_LEGACY__ +strong_alias(strchr,index) +#endif diff --git a/libc/string/metag/strcmp.S b/libc/string/metag/strcmp.S new file mode 100644 index 000000000..3278ffaa5 --- /dev/null +++ b/libc/string/metag/strcmp.S @@ -0,0 +1,65 @@ +! Copyright (C) 2013 Imagination Technologies Ltd. + +! Licensed under LGPL v2.1 or later, see the file COPYING.LIB in this tarball. + + +#include <features.h> + + .text + .global _strcmp + .type _strcmp,function +!D1Ar1 s1 +!D0Ar2 s2 +_strcmp: + TST D1Ar1,#3 + TSTZ D0Ar2,#3 + MOVT D1Re0,#0x0101 + ADD D1Re0,D1Re0,#0x0101 + BNZ $Lstrcmp_slow + GETD D1Ar3,[D1Ar1+#4++] ! Load 32-bits from s1 + GETD D1Ar5,[D0Ar2+#4++] ! Load 32-bits from s2 + LSL D0FrT,D1Re0,#7 ! D0FrT = 0x80808080 +$Lstrcmp4_loop: + SUB D0Re0,D1Ar3,D1Re0 ! D1Re0 = 0x01010101 + MOV D0Ar6,D1Ar3 + SUBS D0Ar4,D1Ar3,D1Ar5 ! Calculate difference + XOR D0Ar6,D0Ar6,#-1 + GETD D1Ar3,[D1Ar1+#4++] ! Load 32-bits from s1 + AND D0Re0,D0Re0,D0Ar6 + ANDSZ D0Ar6,D0Re0,D0FrT ! D0FrT = 0x80808080 + GETD D1Ar5,[D0Ar2+#4++] ! Load 32-bits from s2 + BZ $Lstrcmp4_loop + AND D0Ar6, D0Re0, D0FrT ! D0FrT = 0x80808080 +! +! Either they are different or they both contain a NULL + junk +! +$Lstrcmp4_end: + LSLS D0Re0,D0Ar4,#24 ! Was Byte[0] the same? + LSLSZ D0Ar2,D0Ar6,#24 ! Yes: AND they where not zero? + LSLSZ D0Re0,D0Ar4,#16 ! Yes: Was Byte[1] the same? + LSLSZ D0Ar2,D0Ar6,#16 ! Yes: AND they where not zero? + LSLSZ D0Re0,D0Ar4,#8 ! Tes: Was Byte[2] the same? + LSLSZ D0Ar2,D0Ar6,#8 ! Yes: AND they where not zero? + MOVZ D0Re0,D0Ar4 ! Yes: Must by Byte[3] thats the result + ASR D0Re0,D0Re0,#24 ! Sign extend result to integer + MOV PC,D1RtP +! +! Misaligned case, byte at a time +! +$Lstrcmp_slow: + GETB D1Ar3,[D1Ar1++] ! Load char from s1 + GETB D1Ar5,[D0Ar2++] ! Load char from s2 + CMP D1Ar3,#1 ! Null -> C and NZ, rest -> NC (\1->Z) + CMPNC D1Ar3,D1Ar5 ! NOT Null: Same -> Z, else -> NZ + BZ $Lstrcmp_slow ! NOT Null and Same: Loop + SUB D0Re0,D1Ar3,D1Ar5 ! Generate result + MOV PC,D1RtP + + .size _strcmp,.-_strcmp + + +libc_hidden_def(strcmp) +#ifndef __UCLIBC_HAS_LOCALE__ +strong_alias(strcmp,strcoll) +libc_hidden_def(strcoll) +#endif diff --git a/libc/string/metag/strcpy.S b/libc/string/metag/strcpy.S new file mode 100644 index 000000000..529ac9279 --- /dev/null +++ b/libc/string/metag/strcpy.S @@ -0,0 +1,94 @@ +! Copyright (C) 2013 Imagination Technologies Ltd. + +! Licensed under LGPL v2.1 or later, see the file COPYING.LIB in this tarball. + + + .text + .global _strcpy + .type _strcpy,function +! D1Ar1 dst +! D0Ar2 src + +_strcpy: + MOV A1.2, D1Ar1 + + ! test 4 byte alignment of src + ANDS D0Ar4, D0Ar2, #3 + BNZ $Lbyteloop + + ! test 4 byte alignment of dest + ANDS D1Ar5, D1Ar1, #3 + BNZ $Lbyteloop + + ! load mask values for aligned loops + MOVT D1Ar3, #HI(0xfefefeff) + ADD D1Ar3, D1Ar3, #LO(0xfefefeff) + MOVT D0FrT, #HI(0x80808080) + ADD D0FrT, D0FrT, #LO(0x80808080) + + ! test 8 byte alignment of src + ANDS D0Ar4, D0Ar2, #7 + BNZ $Lwordloop + + ! test 8 byte alignment of dest + ANDS D1Ar5, D1Ar1, #7 + BNZ $Lwordloop + +$L8byteloop: + GETL D1Ar5, D0Ar6, [D0Ar2++] + MOV D1Re0, D1Ar5 + MOV D0Re0, D1Ar5 + ADD D1Re0, D1Re0, D1Ar3 + XOR D0Re0, D0Re0, #-1 + AND D1Re0, D1Re0, D0Re0 + ANDS D1Re0, D1Re0, D0FrT + BNZ $Lnullfound ! NULL in first word + + MOV D1Re0, D0Ar6 + MOV D0Re0, D0Ar6 + ADD D1Re0, D1Re0, D1Ar3 + XOR D0Re0, D0Re0, #-1 + AND D1Re0, D1Re0, D0Re0 + ANDS D1Re0, D1Re0, D0FrT + BNZ $Lnullfound2 ! NULL in the second word + + SETL [A1.2++], D1Ar5, D0Ar6 + B $L8byteloop + +$Lwordloop: + GETD D0Ar6, [D0Ar2++] + MOV D1Re0, D0Ar6 + MOV D0Re0, D0Ar6 + ADD D1Re0, D1Re0, D1Ar3 + XOR D0Re0, D0Re0, #-1 + AND D1Re0, D1Re0, D0Re0 + ANDS D1Re0, D1Re0, D0FrT + MOV D1Ar5, D0Ar6 + BNZ $Lnullfound + SETD [A1.2++], D0Ar6 + B $Lwordloop + +$Lnullfound2: + SETD [A1.2++], D1Ar5 + MOV D1Ar5, D0Ar6 + +$Lnullfound: + SETB [A1.2++], D1Ar5 + ANDS D0Ar6, D1Ar5, #0xff + LSR D1Ar5, D1Ar5, #8 + BNZ $Lnullfound + B $Lend + +$Lbyteloop: + GETB D0Ar6, [D0Ar2++] + SETB [A1.2++], D0Ar6 + CMP D0Ar6, #0 + BNZ $Lbyteloop + +$Lend: + MOV D0Re0, D1Ar1 + MOV PC, D1RtP + + .size _strcpy,.-_strcpy + +libc_hidden_def(strcpy) diff --git a/libc/sysdeps/linux/metag/Makefile b/libc/sysdeps/linux/metag/Makefile new file mode 100644 index 000000000..94b43e117 --- /dev/null +++ b/libc/sysdeps/linux/metag/Makefile @@ -0,0 +1,13 @@ +# Makefile for uClibc +# +# Copyright (C) 2000-2005 Erik Andersen <andersen@uclibc.org> +# +# Licensed under the LGPL v2.1 or later, see the file COPYING.LIB in this tarball. +# + +top_srcdir=../../../../ +top_builddir=../../../../ +all: objs +include $(top_builddir)Rules.mak +include Makefile.arch +include $(top_srcdir)Makerules diff --git a/libc/sysdeps/linux/metag/Makefile.arch b/libc/sysdeps/linux/metag/Makefile.arch new file mode 100644 index 000000000..0e6fbfe12 --- /dev/null +++ b/libc/sysdeps/linux/metag/Makefile.arch @@ -0,0 +1,10 @@ +# Makefile for uClibc +# +# Copyright (C) 2013 Imagination Technologies Ltd. +# +# Licensed under the LGPL v2.1 or later, see the file COPYING.LIB in this tarball. +# + +CSRC-y := brk.c syscall.c metag.c __syscall_error.c + +SSRC-y := _longjmp.S clone.S setjmp.S diff --git a/libc/sysdeps/linux/metag/__syscall_error.c b/libc/sysdeps/linux/metag/__syscall_error.c new file mode 100644 index 000000000..f97cd0126 --- /dev/null +++ b/libc/sysdeps/linux/metag/__syscall_error.c @@ -0,0 +1,18 @@ +/* Wrapper for setting errno. + * + * Copyright (C) 2000-2006 Erik Andersen <andersen@uclibc.org> + * + * Licensed under the LGPL v2.1 or later, see the file COPYING.LIB in this tarball. + */ + +#include <errno.h> +#include <features.h> + +/* This routine is jumped to by all the syscall handlers, to stash + * an error number into errno. */ +int __syscall_error(int err_no) attribute_hidden; +int __syscall_error(int err_no) +{ + __set_errno(-err_no); + return -1; +} diff --git a/libc/sysdeps/linux/metag/_longjmp.S b/libc/sysdeps/linux/metag/_longjmp.S new file mode 100644 index 000000000..54bc71c36 --- /dev/null +++ b/libc/sysdeps/linux/metag/_longjmp.S @@ -0,0 +1,25 @@ +! Copyright (C) 2013 Imagination Technologies Ltd. + +! Licensed under LGPL v2.1 or later, see the file COPYING.LIB in this tarball. + + + .text + .global ___longjmp + .type ___longjmp,function + +___longjmp: + !! If val is 0, set it to 1 + CMP D0Ar2,#0 + ADDZ D0Ar2,D0Ar2,#1 + + !! Restore A0/A1 regs + MGETL A0.0,A0.1,[D1Ar1++] + !! Restore D0/D1 regs + MOV A0.3,D1Ar1 + MGETL D0FrT,D0.5,D0.6,D0.7,[A0.3++] + !! Move 2nd argument to return value + MOV D0Re0,D0Ar2 + MOV PC,D1RtP + .size ___longjmp,.-___longjmp + +libc_hidden_def(__longjmp) diff --git a/libc/sysdeps/linux/metag/bits/endian.h b/libc/sysdeps/linux/metag/bits/endian.h new file mode 100644 index 000000000..af99901a7 --- /dev/null +++ b/libc/sysdeps/linux/metag/bits/endian.h @@ -0,0 +1,12 @@ +/* Meta is little endian + * + * Copyright (C) 2000-2006 Erik Andersen <andersen@uclibc.org> + * + * Licensed under the LGPL v2.1 or later, see the file COPYING.LIB in this tarball. + */ + +#ifndef _ENDIAN_H +# error "Never use <bits/endian.h> directly; include <endian.h> instead." +#endif + +#define __BYTE_ORDER __LITTLE_ENDIAN diff --git a/libc/sysdeps/linux/metag/bits/fcntl.h b/libc/sysdeps/linux/metag/bits/fcntl.h new file mode 100644 index 000000000..c4f641b7e --- /dev/null +++ b/libc/sysdeps/linux/metag/bits/fcntl.h @@ -0,0 +1,238 @@ +/* O_*, F_*, FD_* bit values for Linux. + Copyright (C) 1995-1998, 2000, 2004, 2006, 2007, 2008 + Free Software Foundation, Inc. + This file is part of the GNU C Library. + + The GNU C Library is free software; you can redistribute it and/or + modify it under the terms of the GNU Lesser General Public + License as published by the Free Software Foundation; either + version 2.1 of the License, or (at your option) any later version. + + The GNU C Library is distributed in the hope that it will be useful, + but WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + Lesser General Public License for more details. + + You should have received a copy of the GNU Lesser General Public + License along with the GNU C Library; if not, write to the Free + Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA + 02111-1307 USA. */ + +#ifndef _FCNTL_H +# error "Never use <bits/fcntl.h> directly; include <fcntl.h> instead." +#endif + +#include <sys/types.h> +#ifdef __USE_GNU +# include <bits/uio.h> +#endif + + +/* open/fcntl - O_SYNC is only implemented on blocks devices and on files + located on an ext2 file system */ +#define O_ACCMODE 0003 +#define O_RDONLY 00 +#define O_WRONLY 01 +#define O_RDWR 02 +#define O_CREAT 0100 /* not fcntl */ +#define O_EXCL 0200 /* not fcntl */ +#define O_NOCTTY 0400 /* not fcntl */ +#define O_TRUNC 01000 /* not fcntl */ +#define O_APPEND 02000 +#define O_NONBLOCK 04000 +#define O_NDELAY O_NONBLOCK +#define O_SYNC 010000 +#define O_FSYNC O_SYNC +#define O_ASYNC 020000 + +#ifdef __USE_GNU +# define O_DIRECT 040000 /* Direct disk access. */ +# define O_DIRECTORY 0200000 /* Must be a directory. */ +# define O_NOFOLLOW 0400000 /* Do not follow links. */ +# define O_NOATIME 01000000 /* Do not set atime. */ +# define O_CLOEXEC 02000000 /* Set close_on_exec. */ +#endif + +/* For now Linux has synchronisity options for data and read operations. + We define the symbols here but let them do the same as O_SYNC since + this is a superset. */ +#if defined __USE_POSIX199309 || defined __USE_UNIX98 +# define O_DSYNC O_SYNC /* Synchronize data. */ +# define O_RSYNC O_SYNC /* Synchronize read operations. */ +#endif + +#ifdef __USE_LARGEFILE64 +# define O_LARGEFILE 0100000 +#endif + +/* Values for the second argument to `fcntl'. */ +#define F_DUPFD 0 /* Duplicate file descriptor. */ +#define F_GETFD 1 /* Get file descriptor flags. */ +#define F_SETFD 2 /* Set file descriptor flags. */ +#define F_GETFL 3 /* Get file status flags. */ +#define F_SETFL 4 /* Set file status flags. */ +#ifndef __USE_FILE_OFFSET64 +# define F_GETLK 5 /* Get record locking info. */ +# define F_SETLK 6 /* Set record locking info (non-blocking). */ +# define F_SETLKW 7 /* Set record locking info (blocking). */ +#else +# define F_GETLK F_GETLK64 /* Get record locking info. */ +# define F_SETLK F_SETLK64 /* Set record locking info (non-blocking).*/ +# define F_SETLKW F_SETLKW64 /* Set record locking info (blocking). */ +#endif +#define F_GETLK64 12 /* Get record locking info. */ +#define F_SETLK64 13 /* Set record locking info (non-blocking). */ +#define F_SETLKW64 14 /* Set record locking info (blocking). */ + +#if defined __USE_BSD || defined __USE_UNIX98 +# define F_SETOWN 8 /* Get owner of socket (receiver of SIGIO). */ +# define F_GETOWN 9 /* Set owner of socket (receiver of SIGIO). */ +#endif + +#ifdef __USE_GNU +# define F_SETSIG 10 /* Set number of signal to be sent. */ +# define F_GETSIG 11 /* Get number of signal to be sent. */ +#endif + +#ifdef __USE_GNU +# define F_SETLEASE 1024 /* Set a lease. */ +# define F_GETLEASE 1025 /* Enquire what lease is active. */ +# define F_NOTIFY 1026 /* Request notfications on a directory. */ +# define F_DUPFD_CLOEXEC 1030 /* Duplicate file descriptor with + close-on-exit set on new fd. */ +#endif + +/* For F_[GET|SET]FD. */ +#define FD_CLOEXEC 1 /* actually anything with low bit set goes */ + +/* For posix fcntl() and `l_type' field of a `struct flock' for lockf(). */ +#define F_RDLCK 0 /* Read lock. */ +#define F_WRLCK 1 /* Write lock. */ +#define F_UNLCK 2 /* Remove lock. */ + +/* For old implementation of bsd flock(). */ +#define F_EXLCK 4 /* or 3 */ +#define F_SHLCK 8 /* or 4 */ + +#ifdef __USE_BSD +/* Operations for bsd flock(), also used by the kernel implementation. */ +# define LOCK_SH 1 /* shared lock */ +# define LOCK_EX 2 /* exclusive lock */ +# define LOCK_NB 4 /* or'd with one of the above to prevent + blocking */ +# define LOCK_UN 8 /* remove lock */ +#endif + +#ifdef __USE_GNU +# define LOCK_MAND 32 /* This is a mandatory flock: */ +# define LOCK_READ 64 /* ... which allows concurrent read operations. */ +# define LOCK_WRITE 128 /* ... which allows concurrent write operations. */ +# define LOCK_RW 192 /* ... Which allows concurrent read & write operations. */ +#endif + +#ifdef __USE_GNU +/* Types of directory notifications that may be requested with F_NOTIFY. */ +# define DN_ACCESS 0x00000001 /* File accessed. */ +# define DN_MODIFY 0x00000002 /* File modified. */ +# define DN_CREATE 0x00000004 /* File created. */ +# define DN_DELETE 0x00000008 /* File removed. */ +# define DN_RENAME 0x00000010 /* File renamed. */ +# define DN_ATTRIB 0x00000020 /* File changed attibutes. */ +# define DN_MULTISHOT 0x80000000 /* Don't remove notifier. */ +#endif + +struct flock + { + short int l_type; /* Type of lock: F_RDLCK, F_WRLCK, or F_UNLCK. */ + short int l_whence; /* Where `l_start' is relative to (like `lseek'). */ +#ifndef __USE_FILE_OFFSET64 + __off_t l_start; /* Offset where the lock begins. */ + __off_t l_len; /* Size of the locked area; zero means until EOF. */ +#else + __off64_t l_start; /* Offset where the lock begins. */ + __off64_t l_len; /* Size of the locked area; zero means until EOF. */ +#endif + __pid_t l_pid; /* Process holding the lock. */ + }; + +#ifdef __USE_LARGEFILE64 +struct flock64 + { + short int l_type; /* Type of lock: F_RDLCK, F_WRLCK, or F_UNLCK. */ + short int l_whence; /* Where `l_start' is relative to (like `lseek'). */ + __off64_t l_start; /* Offset where the lock begins. */ + __off64_t l_len; /* Size of the locked area; zero means until EOF. */ + __pid_t l_pid; /* Process holding the lock. */ + }; +#endif + +/* Define some more compatibility macros to be backward compatible with + BSD systems which did not managed to hide these kernel macros. */ +#ifdef __USE_BSD +# define FAPPEND O_APPEND +# define FFSYNC O_FSYNC +# define FASYNC O_ASYNC +# define FNONBLOCK O_NONBLOCK +# define FNDELAY O_NDELAY +#endif /* Use BSD. */ + +/* Advise to `posix_fadvise'. */ +#ifdef __USE_XOPEN2K +# define POSIX_FADV_NORMAL 0 /* No further special treatment. */ +# define POSIX_FADV_RANDOM 1 /* Expect random page references. */ +# define POSIX_FADV_SEQUENTIAL 2 /* Expect sequential page references. */ +# define POSIX_FADV_WILLNEED 3 /* Will need these pages. */ +# define POSIX_FADV_DONTNEED 4 /* Don't need these pages. */ +# define POSIX_FADV_NOREUSE 5 /* Data will be accessed once. */ +#endif + + +#if defined __USE_GNU && defined __UCLIBC_LINUX_SPECIFIC__ +/* Flags for SYNC_FILE_RANGE. */ +# define SYNC_FILE_RANGE_WAIT_BEFORE 1 /* Wait upon writeout of all pages + in the range before performing the + write. */ +# define SYNC_FILE_RANGE_WRITE 2 /* Initiate writeout of all those + dirty pages in the range which are + not presently under writeback. */ +# define SYNC_FILE_RANGE_WAIT_AFTER 4 /* Wait upon writeout of all pages in + the range after performing the + write. */ + +/* Flags for SPLICE and VMSPLICE. */ +# define SPLICE_F_MOVE 1 /* Move pages instead of copying. */ +# define SPLICE_F_NONBLOCK 2 /* Don't block on the pipe splicing + (but we may still block on the fd + we splice from/to). */ +# define SPLICE_F_MORE 4 /* Expect more data. */ +# define SPLICE_F_GIFT 8 /* Pages passed in are a gift. */ +#endif + +__BEGIN_DECLS + +#if defined __USE_GNU && defined __UCLIBC_LINUX_SPECIFIC__ + +/* Provide kernel hint to read ahead. */ +extern ssize_t readahead (int __fd, __off64_t __offset, size_t __count) + __THROW; + +/* Selective file content synch'ing. */ +extern int sync_file_range (int __fd, __off64_t __from, __off64_t __to, + unsigned int __flags); + +/* Splice address range into a pipe. */ +extern ssize_t vmsplice (int __fdout, const struct iovec *__iov, + size_t __count, unsigned int __flags); + +/* Splice two files together. */ +extern ssize_t splice (int __fdin, __off64_t *__offin, int __fdout, + __off64_t *__offout, size_t __len, + unsigned int __flags); + +/* In-kernel implementation of tee for pipe buffers. */ +extern ssize_t tee (int __fdin, int __fdout, size_t __len, + unsigned int __flags); + +#endif +__END_DECLS + diff --git a/libc/sysdeps/linux/metag/bits/ipc.h b/libc/sysdeps/linux/metag/bits/ipc.h new file mode 100644 index 000000000..4852ade32 --- /dev/null +++ b/libc/sysdeps/linux/metag/bits/ipc.h @@ -0,0 +1,55 @@ +/* Copyright (C) 1995-1999, 2000, 2005, 2007 Free Software Foundation, Inc. + This file is part of the GNU C Library. + + The GNU C Library is free software; you can redistribute it and/or + modify it under the terms of the GNU Lesser General Public + License as published by the Free Software Foundation; either + version 2.1 of the License, or (at your option) any later version. + + The GNU C Library is distributed in the hope that it will be useful, + but WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + Lesser General Public License for more details. + + You should have received a copy of the GNU Lesser General Public + License along with the GNU C Library; if not, write to the Free + Software Foundation, Inc., 51 Franklin Street - Fifth Floor, + Boston, MA 02110-1301, USA. */ + +#ifndef _SYS_IPC_H +# error "Never use <bits/ipc.h> directly; include <sys/ipc.h> instead." +#endif + +#include <bits/types.h> + +/* Mode bits for `msgget', `semget', and `shmget'. */ +#define IPC_CREAT 01000 /* Create key if key does not exist. */ +#define IPC_EXCL 02000 /* Fail if key exists. */ +#define IPC_NOWAIT 04000 /* Return error on wait. */ + +/* Control commands for `msgctl', `semctl', and `shmctl'. */ +#define IPC_RMID 0 /* Remove identifier. */ +#define IPC_SET 1 /* Set `ipc_perm' options. */ +#define IPC_STAT 2 /* Get `ipc_perm' options. */ +#ifdef __USE_GNU +# define IPC_INFO 3 /* See ipcs. */ +#endif + +/* Special key values. */ +#define IPC_PRIVATE ((__key_t) 0) /* Private key. */ + + +/* Data structure used to pass permission information to IPC operations. */ +struct ipc_perm + { + __key_t __key; /* Key. */ + __uid_t uid; /* Owner's user ID. */ + __gid_t gid; /* Owner's group ID. */ + __uid_t cuid; /* Creator's user ID. */ + __gid_t cgid; /* Creator's group ID. */ + unsigned int mode; /* Read/write permission. */ + unsigned short __seq; /* Sequence number. */ + unsigned short __pad1; + unsigned long __unused1; + unsigned long __unused2; + }; diff --git a/libc/sysdeps/linux/metag/bits/kernel_types.h b/libc/sysdeps/linux/metag/bits/kernel_types.h new file mode 100644 index 000000000..8e0a91f30 --- /dev/null +++ b/libc/sysdeps/linux/metag/bits/kernel_types.h @@ -0,0 +1,45 @@ +/* Note that we use the exact same include guard #define names + * as asm/posix_types.h. This will avoid gratuitous conflicts + * with the posix_types.h kernel header, and will ensure that + * our private content, and not the kernel header, will win. + * -Erik + * + * Copyright (C) 2000-2006 Erik Andersen <andersen@uclibc.org> + * + * Licensed under the LGPL v2.1 or later, see the file COPYING.LIB in this tarball. + */ + +#ifndef __ASM_GENERIC_POSIX_TYPES_H +#define __ASM_GENERIC_POSIX_TYPES_H + +typedef unsigned int __kernel_dev_t; +typedef unsigned int __kernel_ino_t; +typedef unsigned int __kernel_mode_t; +typedef unsigned long __kernel_nlink_t; +typedef long __kernel_off_t; +typedef int __kernel_pid_t; +typedef unsigned int __kernel_uid_t; +typedef unsigned int __kernel_gid_t; +typedef unsigned int __kernel_size_t; +typedef int __kernel_ssize_t; +typedef long __kernel_ptrdiff_t; +typedef long __kernel_time_t; +typedef long __kernel_suseconds_t; +typedef long __kernel_clock_t; +typedef int __kernel_daddr_t; +typedef char * __kernel_caddr_t; +typedef int __kernel_ipc_pid_t; +typedef unsigned short __kernel_uid16_t; +typedef unsigned short __kernel_gid16_t; +typedef unsigned int __kernel_uid32_t; +typedef unsigned int __kernel_gid32_t; +typedef unsigned int __kernel_old_uid_t; +typedef unsigned int __kernel_old_gid_t; +typedef __kernel_dev_t __kernel_old_dev_t; +typedef long long __kernel_loff_t; + +typedef struct { + int val[2]; +} __kernel_fsid_t; + +#endif /* __ASM_GENERIC_POSIX_TYPES_H */ diff --git a/libc/sysdeps/linux/metag/bits/profil-counter.h b/libc/sysdeps/linux/metag/bits/profil-counter.h new file mode 100644 index 000000000..66ba78141 --- /dev/null +++ b/libc/sysdeps/linux/metag/bits/profil-counter.h @@ -0,0 +1,17 @@ +/* + * Low-level statistical profiling support function. Linux/Meta version. + * + * Copyright (C) 2013, Imagination Technologies Ltd. + * + * Licensed under LGPL v2.1 or later, see the file COPYING.LIB in this tarball. + * + * Based on the SH version from the GNU C Library. + */ + +#include <signal.h> + +static void +profil_counter (int signo, struct sigcontext sc) +{ + profil_count (sc.cbuf.ctx.CurrPC); +} diff --git a/libc/sysdeps/linux/metag/bits/setjmp.h b/libc/sysdeps/linux/metag/bits/setjmp.h new file mode 100644 index 000000000..8ad4b12d2 --- /dev/null +++ b/libc/sysdeps/linux/metag/bits/setjmp.h @@ -0,0 +1,44 @@ +/* + * Copyright (C) 2013, Imagination Technologies Ltd. + * + * Licensed under LGPL v2.1 or later, see the file COPYING.LIB in this tarball. + */ + +/* Define the machine-dependent type `jmp_buf' */ +#ifndef _BITS_SETJMP_H +#define _BITS_SETJMP_H 1 + +#if !defined _SETJMP_H && !defined _PTHREAD_H +# error "Never include <bits/setjmp.h> directly; use <setjmp.h> instead." +#endif + +/* + jmp_buf[0] - A0StP + jmp_buf[1] - A1GbP + jmp_buf[2] - A0FrP + jmp_buf[3] - A1LbP + jmp_buf[4] - D0FrT + jmp_buf[5] - D1RtP + jmp_buf[6] - D0.5 + jmp_buf[7] - D1.5 + jmp_buf[8] - D0.6 + jmp_buf[9] - D1.6 + jmp_buf[10] - D0.7 + jmp_buf[11] - D1.7 + */ + +#define _JBLEN 24 +#if defined (__USE_MISC) || defined (_ASM) +#define JB_SP 0 +#endif + +#ifndef _ASM +typedef int __jmp_buf[_JBLEN] __attribute__((aligned (8))); +#endif + +/* Test if longjmp to JMPBUF would unwind the frame + containing a local variable at ADDRESS. */ +#define _JMPBUF_UNWINDS(jmpbuf, address) \ + ((void *) (address) > (void *) (jmpbuf)[JB_SP]) + +#endif /* bits/setjmp.h */ diff --git a/libc/sysdeps/linux/metag/bits/sigcontextinfo.h b/libc/sysdeps/linux/metag/bits/sigcontextinfo.h new file mode 100644 index 000000000..06c566b42 --- /dev/null +++ b/libc/sysdeps/linux/metag/bits/sigcontextinfo.h @@ -0,0 +1,14 @@ +/* + * Copyright (C) 2013, Imagination Technologies Ltd. + * + * Licensed under LGPL v2.1 or later, see the file COPYING.LIB in this tarball. + * + */ + +#define SIGCONTEXT struct sigcontext +#define SIGCONTEXT_EXTRA_ARGS +#define GET_PC(ctx) ((void *) ctx.cbuf.ctx.CurrPC) +#define GET_FRAME(ctx) ((void *) ctx.cbuf.ctx.AX[1].U0) +#define GET_STACK(ctx) ((void *) ctx.cbuf.ctx.AX[0].U0) +#define CALL_SIGHANDLER(handler, signo, ctx) \ + (handler)((signo), SIGCONTEXT_EXTRA_ARGS (ctx)) diff --git a/libc/sysdeps/linux/metag/bits/stackinfo.h b/libc/sysdeps/linux/metag/bits/stackinfo.h new file mode 100644 index 000000000..55a61219d --- /dev/null +++ b/libc/sysdeps/linux/metag/bits/stackinfo.h @@ -0,0 +1,28 @@ +/* Copyright (C) 2001 Free Software Foundation, Inc. + This file is part of the GNU C Library. + + The GNU C Library is free software; you can redistribute it and/or + modify it under the terms of the GNU Lesser General Public + License as published by the Free Software Foundation; either + version 2.1 of the License, or (at your option) any later version. + + The GNU C Library is distributed in the hope that it will be useful, + but WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + Lesser General Public License for more details. + + You should have received a copy of the GNU Lesser General Public + License along with the GNU C Library; if not, write to the Free + Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA + 02111-1307 USA. */ + +/* This file contains a bit of information about the stack allocation + of the processor. */ + +#ifndef _STACKINFO_H +#define _STACKINFO_H 1 + +/* On Meta the stack grows up. */ +#define _STACK_GROWS_UP 1 + +#endif /* stackinfo.h */ diff --git a/libc/sysdeps/linux/metag/bits/syscalls.h b/libc/sysdeps/linux/metag/bits/syscalls.h new file mode 100644 index 000000000..b5c8fc58c --- /dev/null +++ b/libc/sysdeps/linux/metag/bits/syscalls.h @@ -0,0 +1,99 @@ +/* + * Copyright (C) 2013 Imagination Technologies Ltd. + * + * Licensed under LGPL v2.1 or later, see the file COPYING.LIB in this tarball. + * + */ + +#ifndef _BITS_SYSCALLS_H +#define _BITS_SYSCALLS_H +#ifndef _SYSCALL_H +# error "Never use <bits/syscalls.h> directly; include <sys/syscall.h> instead." +#endif + +/* + Meta version adapted from the ARM version. +*/ + +#define SYS_ify(syscall_name) (__NR_##syscall_name) + +#ifdef __ASSEMBLER__ + +/* Call a given syscall, with arguments loaded. */ +#undef DO_CALL +#define DO_CALL(syscall_name, args) \ + MOV D1Re0, #SYS_ify (syscall_name); \ + SWITCH #0x440001 + +#else + +#include <errno.h> + +#undef INLINE_SYSCALL_NCS +#define INLINE_SYSCALL_NCS(name, nr, args...) \ +(__extension__ \ + ({ unsigned int _inline_sys_result = INTERNAL_SYSCALL_NCS (name, , nr, args); \ + if (unlikely(INTERNAL_SYSCALL_ERROR_P (_inline_sys_result, ))) \ + { \ + __set_errno (INTERNAL_SYSCALL_ERRNO (_inline_sys_result, )); \ + _inline_sys_result = (unsigned int) -1; \ + } \ + (int) _inline_sys_result; }) \ +) + +#undef INTERNAL_SYSCALL_DECL +#define INTERNAL_SYSCALL_DECL(err) do { } while (0) + +#undef INTERNAL_SYSCALL_NCS +#define INTERNAL_SYSCALL_NCS(name, err, nr, args...) \ +(__extension__ \ + ({unsigned int __sys_result; \ + { \ + register int _result __asm__ ("D0Re0"), _nr __asm__ ("D1Re0"); \ + LOAD_ARGS_##nr (args); \ + _nr = (name); \ + __asm__ volatile ("SWITCH #0x440001 ! syscall " #name \ + : "=r" (_result) \ + : "d" (_nr) ASM_ARGS_##nr \ + : "memory"); \ + __sys_result = _result; \ + } \ + (int) __sys_result; }) \ +) + +#undef INTERNAL_SYSCALL_ERROR_P +#define INTERNAL_SYSCALL_ERROR_P(val, err) \ + ((unsigned int) (val) >= 0xfffff001u) + +#undef INTERNAL_SYSCALL_ERRNO +#define INTERNAL_SYSCALL_ERRNO(val, err) (-(val)) + +#define LOAD_ARGS_0() +#define ASM_ARGS_0 +#define LOAD_ARGS_1(a1) \ + register int _a1 __asm__ ("D1Ar1") = (int) (a1); \ + LOAD_ARGS_0 () +#define ASM_ARGS_1 ASM_ARGS_0, "d" (_a1) +#define LOAD_ARGS_2(a1, a2) \ + register int _a2 __asm__ ("D0Ar2") = (int) (a2); \ + LOAD_ARGS_1 (a1) +#define ASM_ARGS_2 ASM_ARGS_1, "d" (_a2) +#define LOAD_ARGS_3(a1, a2, a3) \ + register int _a3 __asm__ ("D1Ar3") = (int) (a3); \ + LOAD_ARGS_2 (a1, a2) +#define ASM_ARGS_3 ASM_ARGS_2, "d" (_a3) +#define LOAD_ARGS_4(a1, a2, a3, a4) \ + register int _a4 __asm__ ("D0Ar4") = (int) (a4); \ + LOAD_ARGS_3 (a1, a2, a3) +#define ASM_ARGS_4 ASM_ARGS_3, "d" (_a4) +#define LOAD_ARGS_5(a1, a2, a3, a4, a5) \ + register int _a5 __asm__ ("D1Ar5") = (int) (a5); \ + LOAD_ARGS_4 (a1, a2, a3, a4) +#define ASM_ARGS_5 ASM_ARGS_4, "d" (_a5) +#define LOAD_ARGS_6(a1, a2, a3, a4, a5, a6) \ + register int _a6 __asm__ ("D0Ar6") = (int) (a6); \ + LOAD_ARGS_5 (a1, a2, a3, a4, a5) +#define ASM_ARGS_6 ASM_ARGS_5, "d" (_a6) + +#endif /* __ASSEMBLER__ */ +#endif /* _BITS_SYSCALLS_H */ diff --git a/libc/sysdeps/linux/metag/bits/uClibc_arch_features.h b/libc/sysdeps/linux/metag/bits/uClibc_arch_features.h new file mode 100644 index 000000000..0a0d00d16 --- /dev/null +++ b/libc/sysdeps/linux/metag/bits/uClibc_arch_features.h @@ -0,0 +1,46 @@ +/* + * Track misc arch-specific features that aren't config options + * + * Copyright (C) 2000-2006 Erik Andersen <andersen@uclibc.org> + * + * Licensed under the LGPL v2.1 or later, see the file COPYING.LIB in this tarball. + */ + +#ifndef _BITS_UCLIBC_ARCH_FEATURES_H +#define _BITS_UCLIBC_ARCH_FEATURES_H + +/* instruction used when calling abort() to kill yourself */ +/*#define __UCLIBC_ABORT_INSTRUCTION__ "asm instruction"*/ +#undef __UCLIBC_ABORT_INSTRUCTION__ + +/* can your target use syscall6() for mmap ? */ +#define __UCLIBC_MMAP_HAS_6_ARGS__ + +/* does your target use syscall4() for truncate64 ? (32bit arches only) */ +#undef __UCLIBC_TRUNCATE64_HAS_4_ARGS__ + +/* does your target have a broken create_module() ? */ +#undef __UCLIBC_BROKEN_CREATE_MODULE__ + +/* does your target have to worry about older [gs]etrlimit() ? */ +#undef __UCLIBC_HANDLE_OLDER_RLIMIT__ + +/* does your target have an asm .set ? */ +#define __UCLIBC_HAVE_ASM_SET_DIRECTIVE__ + +/* define if target doesn't like .global */ +#undef __UCLIBC_ASM_GLOBAL_DIRECTIVE__ + +/* define if target supports .weak */ +#define __UCLIBC_HAVE_ASM_WEAK_DIRECTIVE__ + +/* define if target supports .weakext */ +#undef __UCLIBC_HAVE_ASM_WEAKEXT_DIRECTIVE__ + +/* needed probably only for ppc64 */ +#undef __UCLIBC_HAVE_ASM_GLOBAL_DOT_NAME__ + +/* define if target supports IEEE signed zero floats */ +#define __UCLIBC_HAVE_SIGNED_ZERO__ + +#endif /* _BITS_UCLIBC_ARCH_FEATURES_H */ diff --git a/libc/sysdeps/linux/metag/bits/wordsize.h b/libc/sysdeps/linux/metag/bits/wordsize.h new file mode 100644 index 000000000..ba643b60a --- /dev/null +++ b/libc/sysdeps/linux/metag/bits/wordsize.h @@ -0,0 +1,19 @@ +/* Copyright (C) 1999 Free Software Foundation, Inc. + This file is part of the GNU C Library. + + The GNU C Library is free software; you can redistribute it and/or + modify it under the terms of the GNU Lesser General Public + License as published by the Free Software Foundation; either + version 2.1 of the License, or (at your option) any later version. + + The GNU C Library is distributed in the hope that it will be useful, + but WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + Lesser General Public License for more details. + + You should have received a copy of the GNU Lesser General Public + License along with the GNU C Library; if not, write to the Free + Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA + 02111-1307 USA. */ + +#define __WORDSIZE 32 diff --git a/libc/sysdeps/linux/metag/brk.c b/libc/sysdeps/linux/metag/brk.c new file mode 100644 index 000000000..355e88fc7 --- /dev/null +++ b/libc/sysdeps/linux/metag/brk.c @@ -0,0 +1,38 @@ +/* + * Copyright (C) 2013 Imagination Technologies Ltd. + * + * Licensed under the LGPL v2.1 or later, see the file COPYING.LIB in this tarball. + */ + +#include <errno.h> +#include <unistd.h> +#include <sys/syscall.h> + +libc_hidden_proto(brk) + +/* This must be initialized data because commons can't have aliases. */ +void * __curbrk attribute_hidden = 0; + +int brk (void *addr) +{ + void *newbrk; + + __asm__ __volatile__ ("MOV D1Re0,%2\n\t" + "MOV D1Ar1,%1\n\t" + "SWITCH #0x440001\n\t" + "MOV %0,D0Re0" + : "=r" (newbrk) + : "r" (addr), "K" (__NR_brk) + : "D0Re0", "D1Re0", "D1Ar1"); + + __curbrk = newbrk; + + if (newbrk < addr) + { + __set_errno (ENOMEM); + return -1; + } + + return 0; +} +libc_hidden_def(brk) diff --git a/libc/sysdeps/linux/metag/clone.S b/libc/sysdeps/linux/metag/clone.S new file mode 100644 index 000000000..8fff56710 --- /dev/null +++ b/libc/sysdeps/linux/metag/clone.S @@ -0,0 +1,65 @@ +! Copyright (C) 2013 Imagination Technologies Ltd. + +! Licensed under the LGPL v2.1 or later, see the file COPYING.LIB in this tarball. + +! clone() is even more special than fork() as it mucks with stacks +! and invokes a function in the right context after its all over. + +#include <asm/errno.h> +#include <asm/unistd.h> + +/* int clone(int (*fn)(void *arg), void *child_stack, int flags, void *arg); */ + + .text + .global __clone + .type __clone,function +__clone: + ! sanity check args + MOV D0Re0, #-EINVAL + CMP D1Ar1, #0 + BEQ ___error + CMP D0Ar2, #0 + BEQ ___error + + ! save function pointer + MOV D0FrT, D1Ar1 + + ! do the system call + ! get flags + MOV D1Ar1, D1Ar3 + ! new sp is already in D0Ar2 + MOV D1Re0, #__NR_clone + SWITCH #0x440001 + CMP D0Re0,#0 + ! Error on -1 + BLT ___error + ! If non-zero we are the parent + MOVNE PC, D1RtP + ! BRKPNT + + ! We are the child + ! pick the function arg and call address off the stack and execute + MOV D0Ar2, D0FrT + MOV D1Ar1, D0Ar4 + MOV D1RtP, PC + ADD D1RtP, D1RtP, #8 + MOV PC, D0Ar2 + + ! and we are done, passing the return value through D0Re0 +#ifdef __PIC__ + B _exit@PLT +#else + B _exit +#endif + +___error: + MOV D1Ar1, D0Re0 +#ifdef __PIC__ + B ___syscall_error@PLT +#else + B ___syscall_error +#endif + .size __clone, .-__clone + +.weak _clone +_clone = __clone diff --git a/libc/sysdeps/linux/metag/crt1.S b/libc/sysdeps/linux/metag/crt1.S new file mode 100644 index 000000000..74adc1fdb --- /dev/null +++ b/libc/sysdeps/linux/metag/crt1.S @@ -0,0 +1,76 @@ +! Copyright (C) 2013 Imagination Technologies Ltd. + +! Licensed under the LGPL v2.1 or later, see the file COPYING.LIB in this tarball. + + +#include <asm/unistd.h> + + .text + .global __start + .type __start,function +__start: + MOV D0FrT,A0StP + MOV A0FrP,A0StP + + MOV A0.2,#0 + MOV A0.3,#0 + + MOV A1.1,#0 + MOV A1.2,#0 + MOV A1.3,#0 + + MOV D0.5,#0 + MOV D0.6,#0 + MOV D0.7,#0 + + MOV D1.5,#0 + MOV D1.6,#0 + MOV D1.7,#0 + + MOV D1Ar3,D0Ar2 ! argv + MOV D0Ar2,D1Ar1 ! argc + +#ifdef __PIC__ + ADDT A1LbP,CPC1,#HI(__GLOBAL_OFFSET_TABLE__) + ADD A1LbP,A1LbP,#LO(__GLOBAL_OFFSET_TABLE__+4) + + MOV D1Ar1,A1LbP + ADDT D1Ar1,D1Ar1,#HI(_main@GOTOFF) + ADD D1Ar1,D1Ar1,#LO(_main@GOTOFF) + + MOV D0Ar4,A1LbP + ADDT D0Ar4,D0Ar4,#HI(__init@GOTOFF) + ADD D0Ar4,D0Ar4,#LO(__init@GOTOFF) + + MOV D1Ar5,A1LbP + ADDT D1Ar5,D1Ar5,#HI(__fini@GOTOFF) + ADD D1Ar5,D1Ar5,#LO(__fini@GOTOFF) +#else + MOVT D1Ar1,#HI(_main) + ADD D1Ar1,D1Ar1,#LO(_main) + MOVT D0Ar4,#HI(__init) + ADD D0Ar4,D0Ar4,#LO(__init) + MOVT D1Ar5,#HI(__fini) + ADD D1Ar5,D1Ar5,#LO(__fini) +#endif + + MOV D0Ar6,#0 ! rtld_fini + + MOVT D1Re0,#0x80 + + SETL [A0StP++],D0Re0,D1Re0 ! stack_end (8Mb) + + MOV D1Re0,#0 + MOV D0Re0,#0 + +#ifdef __PIC__ + CALLR D1RtP, ___uClibc_main@PLT +#else + CALLR D1RtP, ___uClibc_main +#endif + + MOV D1Re0,#__NR_exit + MOV D1Ar1,#0x1 + SWITCH #0x440001 ! exit syscall + + .size __start,.-__start diff --git a/libc/sysdeps/linux/metag/crti.S b/libc/sysdeps/linux/metag/crti.S new file mode 100644 index 000000000..f7fca542d --- /dev/null +++ b/libc/sysdeps/linux/metag/crti.S @@ -0,0 +1,19 @@ +! Copyright (C) 2013 Imagination Technologies Ltd. + +! Licensed under the LGPL v2.1 or later, see the file COPYING.LIB in this tarball. + + .section .init + .global __init + .type __init,function +__init: + MOV D0FrT, A0FrP + ADD A0FrP, A0StP, #0 + SETL [A0StP++], D0.4, D1RtP + + .section .fini + .global __fini + .type __fini,function +__fini: + MOV D0FrT, A0FrP + ADD A0FrP, A0StP, #0 + SETL [A0StP++], D0.4, D1RtP diff --git a/libc/sysdeps/linux/metag/crtn.S b/libc/sysdeps/linux/metag/crtn.S new file mode 100644 index 000000000..c885e5373 --- /dev/null +++ b/libc/sysdeps/linux/metag/crtn.S @@ -0,0 +1,19 @@ +! Copyright (C) 2013 Imagination Technologies Ltd. + +! Licensed under the LGPL v2.1 or later, see the file COPYING.LIB in this tarball. + + .section .init + .global __init + .type __init,function + GETL D0.4, D1RtP, [A0FrP+#8++] + SUB A0StP, A0FrP, #8 + MOV A0FrP, D0.4 + MOV PC, D1RtP + + .section .fini + .global __fini + .type __fini,function + GETL D0.4, D1RtP, [A0FrP+#8++] + SUB A0StP, A0FrP, #8 + MOV A0FrP, D0.4 + MOV PC, D1RtP diff --git a/libc/sysdeps/linux/metag/metag.c b/libc/sysdeps/linux/metag/metag.c new file mode 100644 index 000000000..a92f2149c --- /dev/null +++ b/libc/sysdeps/linux/metag/metag.c @@ -0,0 +1,10 @@ +/* + * Copyright (C) 2013 Imagination Technologies Ltd. + * + * Licensed under the LGPL v2.1 or later, see the file COPYING.LIB in this tarball. + */ + +#include <errno.h> +#include <sys/syscall.h> + +_syscall2(int,metag_setglobalbit,char *,addr,int,mask) diff --git a/libc/sysdeps/linux/metag/setjmp.S b/libc/sysdeps/linux/metag/setjmp.S new file mode 100644 index 000000000..f00b4a841 --- /dev/null +++ b/libc/sysdeps/linux/metag/setjmp.S @@ -0,0 +1,52 @@ +/* + * Copyright (C) 2013 Imagination Technologies Ltd. + * + * Licensed under the LGPL v2.1 or later, see the file COPYING.LIB in this tarball. + */ + +!!! setjmp and variants + .text + +!! int _setjmp (jmp_buf __env) +!! Store the calling environment in ENV, not saving the signal mask. +!! Return 0. */ + .global __setjmp + .type __setjmp,function +__setjmp: + MOV D0Ar2,#0 + B ___sigsetjmp1 + .size __setjmp,.-__setjmp + +!! int setjmp (jmp_buf __env) +!! Store the calling environment in ENV, also saving the signal mask. +!! Return 0. */ + .global _setjmp + .type _setjmp,function +_setjmp: + MOV D0Ar2,#1 + !! fall through to __sigsetjmp + .size _setjmp,.-_setjmp + +!! int __sigsetjmp (jmp_buf __env, int __savemask) +!! Store the calling environment in ENV, also saving the +!! signal mask if SAVEMASK is nonzero. Return 0. +!! This is the internal name for `sigsetjmp'. + .global ___sigsetjmp + .type ___sigsetjmp,function +___sigsetjmp: +___sigsetjmp1: + !! Save A0/A1 regs + MSETL [D1Ar1++],A0.0,A0.1 + !! Use A0.3 as temp + MOV A0.3,D1Ar1 + !! Rewind D1Ar1 that was modified above + SUB D1Ar1,D1Ar1,#(2*8) + !! Save D0/D1 regs + MSETL [A0.3++],D0FrT,D0.5,D0.6,D0.7 + !! Tail call __sigjmp_save +#ifdef __PIC__ + B ___sigjmp_save@PLT +#else + B ___sigjmp_save +#endif + .size ___sigsetjmp,.-___sigsetjmp diff --git a/libc/sysdeps/linux/metag/sys/io.h b/libc/sysdeps/linux/metag/sys/io.h new file mode 100644 index 000000000..6fdc44ff8 --- /dev/null +++ b/libc/sysdeps/linux/metag/sys/io.h @@ -0,0 +1,48 @@ +/* Copyright (C) 1996, 1998, 1999, 2000 Free Software Foundation, Inc. + This file is part of the GNU C Library. + + The GNU C Library is free software; you can redistribute it and/or + modify it under the terms of the GNU Lesser General Public + License as published by the Free Software Foundation; either + version 2.1 of the License, or (at your option) any later version. + + The GNU C Library is distributed in the hope that it will be useful, + but WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + Lesser General Public License for more details. + + You should have received a copy of the GNU Lesser General Public + License along with the GNU C Library; if not, write to the Free + Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA + 02111-1307 USA. */ + +#ifndef _SYS_IO_H + +#define _SYS_IO_H 1 +#include <features.h> + +__BEGIN_DECLS + +/* If TURN_ON is TRUE, request for permission to do direct i/o on the + port numbers in the range [FROM,FROM+NUM-1]. Otherwise, turn I/O + permission off for that range. This call requires root privileges. */ +extern int ioperm (unsigned long int __from, unsigned long int __num, + int __turn_on) __THROW; + +/* Set the I/O privilege level to LEVEL. If LEVEL is nonzero, + permission to access any I/O port is granted. This call requires + root privileges. */ +extern int iopl (int __level) __THROW; + +/* The functions that actually perform reads and writes. */ +extern unsigned char inb (unsigned long int port) __THROW; +extern unsigned short int inw (unsigned long int port) __THROW; +extern unsigned long int inl (unsigned long int port) __THROW; + +extern void outb (unsigned char value, unsigned long int port) __THROW; +extern void outw (unsigned short value, unsigned long int port) __THROW; +extern void outl (unsigned long value, unsigned long int port) __THROW; + +__END_DECLS + +#endif /* _SYS_IO_H */ diff --git a/libc/sysdeps/linux/metag/sys/procfs.h b/libc/sysdeps/linux/metag/sys/procfs.h new file mode 100644 index 000000000..4a4ca7672 --- /dev/null +++ b/libc/sysdeps/linux/metag/sys/procfs.h @@ -0,0 +1,121 @@ +/* Copyright (C) 1996, 1997, 1999, 2007 Free Software Foundation, Inc. + This file is part of the GNU C Library. + + The GNU C Library is free software; you can redistribute it and/or + modify it under the terms of the GNU Lesser General Public + License as published by the Free Software Foundation; either + version 2.1 of the License, or (at your option) any later version. + + The GNU C Library is distributed in the hope that it will be useful, + but WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + Lesser General Public License for more details. + + You should have received a copy of the GNU Lesser General Public + License along with the GNU C Library; if not, write to the Free + Software Foundation, Inc., 51 Franklin Street - Fifth Floor, + Boston, MA 02110-1301, USA. */ + +#ifndef _SYS_PROCFS_H +#define _SYS_PROCFS_H 1 + +/* This is somewhat modelled after the file of the same name on SVR4 + systems. It provides a definition of the core file format for ELF + used on Linux. It doesn't have anything to do with the /proc file + system, even though Linux has one. + + Anyway, the whole purpose of this file is for GDB and GDB only. + Don't read too much into it. Don't use it for anything other than + GDB unless you know what you are doing. */ + +#include <features.h> +#include <sys/time.h> +#include <sys/types.h> +#include <sys/user.h> + +__BEGIN_DECLS + +/* Type for a general-purpose register. */ +typedef unsigned long elf_greg_t; + +#define ELF_NGREG 30 +typedef elf_greg_t elf_gregset_t[ELF_NGREG]; + +/* Register set for the floating-point registers. */ +#define ELF_NFPREG 18 +typedef unsigned long elf_fpreg_t; +typedef elf_fpreg_t elf_fpregset_t[ELF_NFPREG]; + +/* Signal info. */ +struct elf_siginfo + { + int si_signo; /* Signal number. */ + int si_code; /* Extra code. */ + int si_errno; /* Errno. */ + }; + +/* Definitions to generate Intel SVR4-like core files. These mostly + have the same names as the SVR4 types with "elf_" tacked on the + front to prevent clashes with Linux definitions, and the typedef + forms have been avoided. This is mostly like the SVR4 structure, + but more Linuxy, with things that Linux does not support and which + GDB doesn't really use excluded. */ + +struct elf_prstatus + { + struct elf_siginfo pr_info; /* Info associated with signal. */ + short int pr_cursig; /* Current signal. */ + unsigned long int pr_sigpend; /* Set of pending signals. */ + unsigned long int pr_sighold; /* Set of held signals. */ + __pid_t pr_pid; + __pid_t pr_ppid; + __pid_t pr_pgrp; + __pid_t pr_sid; + struct timeval pr_utime; /* User time. */ + struct timeval pr_stime; /* System time. */ + struct timeval pr_cutime; /* Cumulative user time. */ + struct timeval pr_cstime; /* Cumulative system time. */ + elf_gregset_t pr_reg; /* GP registers. */ + int pr_fpvalid; /* True if math copro being used. */ + }; + + +#define ELF_PRARGSZ (80) /* Number of chars for args. */ + +struct elf_prpsinfo + { + char pr_state; /* Numeric process state. */ + char pr_sname; /* Char for pr_state. */ + char pr_zomb; /* Zombie. */ + char pr_nice; /* Nice val. */ + unsigned long int pr_flag; /* Flags. */ + unsigned short int pr_uid; + unsigned short int pr_gid; + int pr_pid, pr_ppid, pr_pgrp, pr_sid; + /* Lots missing */ + char pr_fname[16]; /* Filename of executable. */ + char pr_psargs[ELF_PRARGSZ]; /* Initial part of arg list. */ + }; + +/* The rest of this file provides the types for emulation of the + Solaris <proc_service.h> interfaces that should be implemented by + users of libthread_db. */ + +/* Addresses. */ +typedef void *psaddr_t; + +/* Register sets. Linux has different names. */ +typedef elf_gregset_t prgregset_t; +typedef elf_fpregset_t prfpregset_t; + +/* We don't have any differences between processes and threads, + therefore have only one PID type. */ +typedef __pid_t lwpid_t; + +/* Process status and info. In the end we do provide typedefs for them. */ +typedef struct elf_prstatus prstatus_t; +typedef struct elf_prpsinfo prpsinfo_t; + +__END_DECLS + +#endif /* sys/procfs.h */ diff --git a/libc/sysdeps/linux/metag/sys/ucontext.h b/libc/sysdeps/linux/metag/sys/ucontext.h new file mode 100644 index 000000000..899c20035 --- /dev/null +++ b/libc/sysdeps/linux/metag/sys/ucontext.h @@ -0,0 +1,96 @@ +/* Copyright (C) 1998, 1999, 2001, 2006 Free Software Foundation, Inc. + This file is part of the GNU C Library. + + The GNU C Library is free software; you can redistribute it and/or + modify it under the terms of the GNU Lesser General Public + License as published by the Free Software Foundation; either + version 2.1 of the License, or (at your option) any later version. + + The GNU C Library is distributed in the hope that it will be useful, + but WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + Lesser General Public License for more details. + + You should have received a copy of the GNU Lesser General Public + License along with the GNU C Library; if not, write to the Free + Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA + 02111-1307 USA. */ + +/* Meta ABI compliant context switching support. */ + +#ifndef _SYS_UCONTEXT_H +#define _SYS_UCONTEXT_H 1 + +#include <features.h> +#include <signal.h> +#include <sys/procfs.h> + +/* We need the signal context definitions even if they are not used + included in <signal.h>. */ +#include <bits/sigcontext.h> + +typedef int greg_t; + +/* Number of general registers. */ +#define NGREG 18 + +/* Container for all general registers. */ +typedef elf_gregset_t gregset_t; + +/* Number of each register is the `gregset_t' array. */ +enum +{ + R0 = 0, +#define R0 R0 + R1 = 1, +#define R1 R1 + R2 = 2, +#define R2 R2 + R3 = 3, +#define R3 R3 + R4 = 4, +#define R4 R4 + R5 = 5, +#define R5 R5 + R6 = 6, +#define R6 R6 + R7 = 7, +#define R7 R7 + R8 = 8, +#define R8 R8 + R9 = 9, +#define R9 R9 + R10 = 10, +#define R10 R10 + R11 = 11, +#define R11 R11 + R12 = 12, +#define R12 R12 + R13 = 13, +#define R13 R13 + R14 = 14, +#define R14 R14 + R15 = 15 +#define R15 R15 +}; + +/* Structure to describe FPU registers. */ +typedef elf_fpregset_t fpregset_t; + +/* Context to describe whole processor state. This only describes + the core registers; coprocessor registers get saved elsewhere + (e.g. in uc_regspace, or somewhere unspecified on the stack + during non-RT signal handlers). */ +typedef struct sigcontext mcontext_t; + +/* Userlevel context. */ +typedef struct ucontext + { + unsigned long uc_flags; + struct ucontext *uc_link; + stack_t uc_stack; + mcontext_t uc_mcontext; + __sigset_t uc_sigmask; + } ucontext_t; + +#endif /* sys/ucontext.h */ diff --git a/libc/sysdeps/linux/metag/sys/user.h b/libc/sysdeps/linux/metag/sys/user.h new file mode 100644 index 000000000..3d282d9be --- /dev/null +++ b/libc/sysdeps/linux/metag/sys/user.h @@ -0,0 +1,7 @@ +/* + * This file is not needed, but in practice gdb might try to include it. + * + * Copyright (C) 2013 Imagination Technologies Ltd. + * + * Licensed under the LGPL v2.1 or later, see the file COPYING.LIB in this tarball. + */ diff --git a/libc/sysdeps/linux/metag/syscall.c b/libc/sysdeps/linux/metag/syscall.c new file mode 100644 index 000000000..93aabf3e0 --- /dev/null +++ b/libc/sysdeps/linux/metag/syscall.c @@ -0,0 +1,40 @@ +/* syscall for META/uClibc + * + * Copyright (C) 2013 Imagination Technologies + * + * Licensed under the LGPL v2.1 or later, see the file COPYING.LIB in this tarball. + */ + +#include <features.h> +#include <errno.h> +#include <sys/types.h> +#include <sys/syscall.h> + +long syscall(long sysnum, + long arg1, long arg2, long arg3, + long arg4, long arg5, long arg6) +{ + + register long __call __asm__ ("D1Re0") = sysnum; + register long __res __asm__ ("D0Re0"); + register long __a __asm__ ("D1Ar1") = arg1; + register long __b __asm__ ("D0Ar2") = arg2; + register long __c __asm__ ("D1Ar3") = arg3; + register long __d __asm__ ("D0Ar4") = arg4; + register long __e __asm__ ("D1Ar5") = arg5; + register long __f __asm__ ("D0Ar6") = arg6; + + + __asm__ __volatile__ ("SWITCH #0x440001" + : "=d" (__res) + : "d" (__call), "d" (__a), "d" (__b), + "d" (__c), "d" (__d), "d" (__e) , "d" (__f) + : "memory"); + + if(__res >= (unsigned long) -4095) { + long err = __res; + (*__errno_location()) = (-err); + __res = (unsigned long) -1; + } + return (long) __res; +} |