2003-12-02 Richard Sandiford <rsandifo@redhat.com>
* frv/crt0.S (_start): Fix use of FDPIC conditionals. Move the set of gr11 outside the FDPIC conditional. Avoid clobbering gr4 too early. 2003-11-14 Richard Sandiford <rsandifo@redhat.com> * frv/crt0.S: Fix fdpic sp calculation. 2003-11-05 Alexandre Oliva <aoliva@redhat.com> * frv/crt0.S: Use __stacksize, not __stack, to initialize sp on FDPIC. Update comments on computing _GLOBAL_OFFSET_TABLE_. Don't fixup ctors nor dtors on FDPIC. 2003-09-19 Alexandre Oliva <aoliva@redhat.com> * frv/crt0.S (_start): Set up gr15 only for FDPIC. * frv/crt0.S (_start): Save _GLOBAL_OFFSET_TABLE_ in gr17, and set gr15 before function calls. 2003-09-19 DJ Delorie <dj@redhat.com>, Alexandre Oliva <aoliva@redhat.com> * frv/crt0.S (_start): Set up gr15 with _GLOBAL_OFFSET_TABLE_'s value.
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Alexandre Oliva
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327a2cf95e
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@ -1,3 +1,22 @@
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2004-01-06 Alexandre Oliva <aoliva@redhat.com>
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2003-12-02 Richard Sandiford <rsandifo@redhat.com>
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* frv/crt0.S (_start): Fix use of FDPIC conditionals. Move the set of
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gr11 outside the FDPIC conditional. Avoid clobbering gr4 too early.
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2003-11-14 Richard Sandiford <rsandifo@redhat.com>
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* frv/crt0.S: Fix fdpic sp calculation.
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2003-11-05 Alexandre Oliva <aoliva@redhat.com>
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* frv/crt0.S: Use __stacksize, not __stack, to initialize sp on
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FDPIC. Update comments on computing _GLOBAL_OFFSET_TABLE_. Don't
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fixup ctors nor dtors on FDPIC.
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2003-09-19 Alexandre Oliva <aoliva@redhat.com>
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* frv/crt0.S (_start): Set up gr15 only for FDPIC.
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* frv/crt0.S (_start): Save _GLOBAL_OFFSET_TABLE_ in gr17, and set
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gr15 before function calls.
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2003-09-19 DJ Delorie <dj@redhat.com>, Alexandre Oliva <aoliva@redhat.com>
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* frv/crt0.S (_start): Set up gr15 with _GLOBAL_OFFSET_TABLE_'s
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value.
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2003-10-27 Bernardo Innocenti <bernie@develer.com>
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* m68k/asm.h: Add macros for -fPIC, -msep-data and
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@ -1,6 +1,6 @@
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/* crt0.S -- startup file for frv.
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*
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* Copyright (c) 2002 Red Hat, Inc
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* Copyright (c) 2002, 2003 Red Hat, Inc
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*
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* The authors hereby grant permission to use, copy, modify, distribute,
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* and license this software and its documentation for any purpose, provided
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@ -36,11 +36,41 @@ _start:
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setlo #gprello(.Lcall), gr5
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P(sub) gr4, gr5, gr16
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#if ! __FRV_FDPIC__
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sethi #gprelhi(EXT(_stack)), sp /* load up stack pointer */
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P(setlo) #gprello(EXT(_stack)), sp
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setlos #0, fp /* zero fp to allow unwinders to stop */
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P(add) sp, gr16, sp
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#define FDPIC(...)
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#else
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#define FDPIC(...) __VA_ARGS__
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/* The assembler will rightfully claim that
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#hi/lo(__stacksize) are unsafe for PIC, but since __stacksize
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is absolute, and we don't want it to be relocated, we should
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be fine. */
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sethi #gprelhi(EXT(__end)), gr6
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P(sethi) #hi(EXT(__stacksize+7)), gr5
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setlo #gprello(EXT(__end)), gr6
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P(setlo) #lo(EXT(__stacksize+7)), gr5
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add gr6, gr16, gr6
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add gr6, gr5, gr5
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andi gr5, -8, sp
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/* Using GPREL to compute _GLOBAL_OFFSET_TABLE_'s will force
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the entire program to relocate as a unit, which is fine for
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frv-elf. */
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P(sethi) #gprelhi(EXT(_GLOBAL_OFFSET_TABLE_)), gr15
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setlo #gprello(EXT(_GLOBAL_OFFSET_TABLE_)), gr15
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/* We compute the value in a call-saved register (that happens
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to be the PIC register in the EABI, and copy it to gr15 before
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every call. */
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add gr15, gr16, gr17
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#endif
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sethi #gprelhi(EXT(__start_cmp)), gr5
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setlo #gprello(EXT(__start_cmp)), gr5
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ld @(gr5,gr16), gr6
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@ -48,6 +78,9 @@ _start:
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beq icc0, 0, .Lfixed
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P(st) gr4, @(gr5, gr16) /* update so if we restart no need to fixup */
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setlos 4, gr11
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#if ! __FRV_FDPIC__
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/* fixup the .ctors list */
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sethi #gprelhi(EXT(__CTOR_LIST__)), gr9
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@ -58,7 +91,6 @@ _start:
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P(add) gr10, gr16, gr10
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addi gr9, 4, gr9
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P(subi) gr10, 4, gr10
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setlos 4, gr11
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call EXT(__frv_fixptrs)
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/* fixup the .dtors list */
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@ -71,6 +103,7 @@ _start:
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P(addi) gr9, 4, gr9
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subi gr10, 4, gr10
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call EXT(__frv_fixptrs)
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#endif /* ! __FRV_FDPIC__ */
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/* fixup the .dtors list */
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P(sethi) #gprelhi(EXT(__ROFIXUP_LIST__)), gr9
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@ -79,6 +112,7 @@ _start:
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setlo #gprello(EXT(__ROFIXUP_END__)), gr10
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P(add) gr9, gr16, gr9
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add gr10, gr16, gr10
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FDPIC(mov gr17, gr15)
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call EXT(__frv_fix_usrptrs)
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.Lfixed:
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@ -166,17 +200,21 @@ _start:
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add gr4, gr16, gr4
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P(setlos) #0, gr9
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sub gr4, gr8, gr10
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FDPIC(mov gr17, gr15)
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call EXT(memset)
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P(setlos) #0, gr8 /* zero argc, argv, envp */
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setlos #0, gr9
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P(setlos) #0, gr10
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FDPIC(mov gr17, gr15)
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call EXT(main)
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FDPIC(mov gr17, gr15)
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call EXT(exit)
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.Lend:
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.size __start,(.Lend-__start)
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#if ! __FRV_FDPIC__
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/* Routine to adjust pointers
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gr8 = difference to adjust by
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gr9 = starting address
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@ -199,6 +237,7 @@ EXT(__frv_fixptrs):
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.Lret2: ret
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.Lend2:
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.size EXT(__frv_fixptrs),.Lend2-EXT(__frv_fixptrs)
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#endif /* ! __FRV_FDPIC__ */
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/* Routine to adjust statically initialized pointers
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Note since these are pointers to pointers, they
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