libunwind.S: Add .arch/.object_arch for armv4 builds.
gcc: 2007-03-07 Paul Brook <paul@codesourcery.com> * config/arm/libunwind.S: Add .arch/.object_arch for armv4 builds. gcc: 2007-03-07 Joseph Myers <joseph@codesourcery.com> * config/arm/unwind-arm.c (struct wmmxd_regs, struct wmmxc_regs): New. (phase1_vrs): Use them. (DEMAND_SAVE_WMMXD, DEMAND_SAVE_WMMXC): New. (__gnu_Unwind_Save_WMMXD, __gnu_Unwind_Restore_WMMXD, __gnu_Unwind_Save_WMMXC, __gnu_Unwind_Restore_WMMXC): Declare. (restore_non_core_regs): Call __gnu_Unwind_Restore_WMMXD and __gnu_Unwind_Restore_WMMXC if required. (_Unwind_VRS_Pop): Implement iWMMXt support. * config/arm/libunwind.S (gnu_Unwind_Restore_WMMXD, gnu_Unwind_Save_WMMXD, gnu_Unwind_Restore_WMMXC, gnu_Unwind_Save_WMMXC): Define. gcc/testsuite: 2007-03-07 Joseph Myers <joseph@codesourcery.com> * g++.dg/eh/arm-iwmmxt-unwind.C: New test. From-SVN: r122658
This commit is contained in:
Joseph Myers
parent
ef67275542
commit
a566d05002
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@ -1,3 +1,22 @@
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2007-03-07 Paul Brook <paul@codesourcery.com>
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* config/arm/libunwind.S: Add .arch/.object_arch for armv4 builds.
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2007-03-07 Joseph Myers <joseph@codesourcery.com>
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* config/arm/unwind-arm.c (struct wmmxd_regs, struct wmmxc_regs):
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New.
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(phase1_vrs): Use them.
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(DEMAND_SAVE_WMMXD, DEMAND_SAVE_WMMXC): New.
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(__gnu_Unwind_Save_WMMXD, __gnu_Unwind_Restore_WMMXD,
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__gnu_Unwind_Save_WMMXC, __gnu_Unwind_Restore_WMMXC): Declare.
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(restore_non_core_regs): Call __gnu_Unwind_Restore_WMMXD and
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__gnu_Unwind_Restore_WMMXC if required.
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(_Unwind_VRS_Pop): Implement iWMMXt support.
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* config/arm/libunwind.S (gnu_Unwind_Restore_WMMXD,
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gnu_Unwind_Save_WMMXD, gnu_Unwind_Restore_WMMXC,
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gnu_Unwind_Save_WMMXC): Define.
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2007-03-07 Richard Sandiford <richard@codesourcery.com>
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* config/vxworks.h (vxworks_override_options): Declare.
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@ -41,6 +41,18 @@
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EQUIV SYM (\name), SYM (__\name)
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.endm
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#if (__ARM_ARCH__ == 4)
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/* Some coprocessors require armv5. We know this code will never be run on
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other cpus. Tell gas to allow armv5, but only mark the objects as armv4.
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*/
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.arch armv5t
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#ifdef __ARM_ARCH_4T__
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.object_arch armv4t
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#else
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.object_arch armv4
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#endif
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#endif
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/* r0 points to a 16-word block. Upload these values to the actual core
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state. */
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ARM_FUNC_START restore_core_regs
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@ -119,6 +131,66 @@ ARM_FUNC_START gnu_Unwind_Save_VFP_D_16_to_31
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stcl p11,cr0,[r0],{0x20} /* vstm r0, {d16-d31} */
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RET
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ARM_FUNC_START gnu_Unwind_Restore_WMMXD
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/* Use the generic coprocessor form so that gas doesn't complain
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on non-iWMMXt targets. */
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ldcl p1, cr0, [r0], #8 /* wldrd wr0, [r0], #8 */
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ldcl p1, cr1, [r0], #8 /* wldrd wr1, [r0], #8 */
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ldcl p1, cr2, [r0], #8 /* wldrd wr2, [r0], #8 */
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ldcl p1, cr3, [r0], #8 /* wldrd wr3, [r0], #8 */
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ldcl p1, cr4, [r0], #8 /* wldrd wr4, [r0], #8 */
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ldcl p1, cr5, [r0], #8 /* wldrd wr5, [r0], #8 */
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ldcl p1, cr6, [r0], #8 /* wldrd wr6, [r0], #8 */
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ldcl p1, cr7, [r0], #8 /* wldrd wr7, [r0], #8 */
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ldcl p1, cr8, [r0], #8 /* wldrd wr8, [r0], #8 */
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ldcl p1, cr9, [r0], #8 /* wldrd wr9, [r0], #8 */
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ldcl p1, cr10, [r0], #8 /* wldrd wr10, [r0], #8 */
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ldcl p1, cr11, [r0], #8 /* wldrd wr11, [r0], #8 */
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ldcl p1, cr12, [r0], #8 /* wldrd wr12, [r0], #8 */
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ldcl p1, cr13, [r0], #8 /* wldrd wr13, [r0], #8 */
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ldcl p1, cr14, [r0], #8 /* wldrd wr14, [r0], #8 */
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ldcl p1, cr15, [r0], #8 /* wldrd wr15, [r0], #8 */
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RET
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ARM_FUNC_START gnu_Unwind_Save_WMMXD
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/* Use the generic coprocessor form so that gas doesn't complain
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on non-iWMMXt targets. */
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stcl p1, cr0, [r0], #8 /* wstrd wr0, [r0], #8 */
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stcl p1, cr1, [r0], #8 /* wstrd wr1, [r0], #8 */
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stcl p1, cr2, [r0], #8 /* wstrd wr2, [r0], #8 */
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stcl p1, cr3, [r0], #8 /* wstrd wr3, [r0], #8 */
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stcl p1, cr4, [r0], #8 /* wstrd wr4, [r0], #8 */
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stcl p1, cr5, [r0], #8 /* wstrd wr5, [r0], #8 */
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stcl p1, cr6, [r0], #8 /* wstrd wr6, [r0], #8 */
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stcl p1, cr7, [r0], #8 /* wstrd wr7, [r0], #8 */
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stcl p1, cr8, [r0], #8 /* wstrd wr8, [r0], #8 */
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stcl p1, cr9, [r0], #8 /* wstrd wr9, [r0], #8 */
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stcl p1, cr10, [r0], #8 /* wstrd wr10, [r0], #8 */
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stcl p1, cr11, [r0], #8 /* wstrd wr11, [r0], #8 */
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stcl p1, cr12, [r0], #8 /* wstrd wr12, [r0], #8 */
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stcl p1, cr13, [r0], #8 /* wstrd wr13, [r0], #8 */
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stcl p1, cr14, [r0], #8 /* wstrd wr14, [r0], #8 */
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stcl p1, cr15, [r0], #8 /* wstrd wr15, [r0], #8 */
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RET
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ARM_FUNC_START gnu_Unwind_Restore_WMMXC
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/* Use the generic coprocessor form so that gas doesn't complain
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on non-iWMMXt targets. */
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ldc2 p1, cr8, [r0], #4 /* wldrw wcgr0, [r0], #4 */
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ldc2 p1, cr9, [r0], #4 /* wldrw wcgr1, [r0], #4 */
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ldc2 p1, cr10, [r0], #4 /* wldrw wcgr2, [r0], #4 */
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ldc2 p1, cr11, [r0], #4 /* wldrw wcgr3, [r0], #4 */
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RET
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ARM_FUNC_START gnu_Unwind_Save_WMMXC
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/* Use the generic coprocessor form so that gas doesn't complain
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on non-iWMMXt targets. */
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stc2 p1, cr8, [r0], #4 /* wstrw wcgr0, [r0], #4 */
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stc2 p1, cr9, [r0], #4 /* wstrw wcgr1, [r0], #4 */
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stc2 p1, cr10, [r0], #4 /* wstrw wcgr2, [r0], #4 */
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stc2 p1, cr11, [r0], #4 /* wstrw wcgr3, [r0], #4 */
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RET
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/* Wrappers to save core registers, then call the real routine. */
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.macro UNWIND_WRAPPER name nargs
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@ -91,6 +91,16 @@ struct fpa_regs
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struct fpa_reg f[8];
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};
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struct wmmxd_regs
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{
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_uw64 wd[16];
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};
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struct wmmxc_regs
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{
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_uw wc[4];
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};
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/* Unwind descriptors. */
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typedef struct
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@ -123,12 +133,18 @@ typedef struct
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struct vfp_regs vfp;
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struct vfpv3_regs vfp_regs_16_to_31;
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struct fpa_regs fpa;
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struct wmmxd_regs wmmxd;
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struct wmmxc_regs wmmxc;
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} phase1_vrs;
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#define DEMAND_SAVE_VFP 1 /* VFP state has been saved if not set */
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#define DEMAND_SAVE_VFP_D 2 /* VFP state is for FLDMD/FSTMD if set */
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#define DEMAND_SAVE_VFP_V3 4 /* VFPv3 state for regs 16 .. 31 has
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been saved if not set */
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#define DEMAND_SAVE_WMMXD 8 /* iWMMXt data registers have been
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saved if not set. */
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#define DEMAND_SAVE_WMMXC 16 /* iWMMXt control registers have been
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saved if not set. */
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/* This must match the structure created by the assembly wrappers. */
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typedef struct
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/* Routines for FLDMX/FSTMX format... */
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void __gnu_Unwind_Save_VFP (struct vfp_regs * p);
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void __gnu_Unwind_Restore_VFP (struct vfp_regs * p);
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void __gnu_Unwind_Save_WMMXD (struct wmmxd_regs * p);
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void __gnu_Unwind_Restore_WMMXD (struct wmmxd_regs * p);
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void __gnu_Unwind_Save_WMMXC (struct wmmxc_regs * p);
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void __gnu_Unwind_Restore_WMMXC (struct wmmxc_regs * p);
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/* ...and those for FLDMD/FSTMD format... */
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void __gnu_Unwind_Save_VFP_D (struct vfp_regs * p);
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if ((vrs->demand_save_flags & DEMAND_SAVE_VFP_V3) == 0)
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__gnu_Unwind_Restore_VFP_D_16_to_31 (&vrs->vfp_regs_16_to_31);
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if ((vrs->demand_save_flags & DEMAND_SAVE_WMMXD) == 0)
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__gnu_Unwind_Restore_WMMXD (&vrs->wmmxd);
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if ((vrs->demand_save_flags & DEMAND_SAVE_WMMXC) == 0)
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__gnu_Unwind_Restore_WMMXC (&vrs->wmmxc);
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}
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/* A better way to do this would probably be to compare the absolute address
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@ -421,10 +446,81 @@ _Unwind_VRS_Result _Unwind_VRS_Pop (_Unwind_Context *context,
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return _UVRSR_OK;
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case _UVRSC_FPA:
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case _UVRSC_WMMXD:
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case _UVRSC_WMMXC:
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return _UVRSR_NOT_IMPLEMENTED;
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case _UVRSC_WMMXD:
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{
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_uw start = discriminator >> 16;
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_uw count = discriminator & 0xffff;
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struct wmmxd_regs tmp;
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_uw *sp;
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_uw *dest;
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if ((representation != _UVRSD_UINT64) || start + count > 16)
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return _UVRSR_FAILED;
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if (vrs->demand_save_flags & DEMAND_SAVE_WMMXD)
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{
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/* Demand-save resisters for stage1. */
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vrs->demand_save_flags &= ~DEMAND_SAVE_WMMXD;
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__gnu_Unwind_Save_WMMXD (&vrs->wmmxd);
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}
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/* Restore the registers from the stack. Do this by saving the
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current WMMXD registers to a memory area, moving the in-memory
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values into that area, and restoring from the whole area. */
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__gnu_Unwind_Save_WMMXD (&tmp);
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/* The stack address is only guaranteed to be word aligned, so
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we can't use doubleword copies. */
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sp = (_uw *) vrs->core.r[R_SP];
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dest = (_uw *) &tmp.wd[start];
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count *= 2;
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while (count--)
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*(dest++) = *(sp++);
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/* Set the new stack pointer. */
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vrs->core.r[R_SP] = (_uw) sp;
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/* Reload the registers. */
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__gnu_Unwind_Restore_WMMXD (&tmp);
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}
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return _UVRSR_OK;
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case _UVRSC_WMMXC:
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{
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int i;
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struct wmmxc_regs tmp;
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_uw *sp;
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if ((representation != _UVRSD_UINT32) || discriminator > 16)
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return _UVRSR_FAILED;
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if (vrs->demand_save_flags & DEMAND_SAVE_WMMXC)
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{
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/* Demand-save resisters for stage1. */
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vrs->demand_save_flags &= ~DEMAND_SAVE_WMMXC;
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__gnu_Unwind_Save_WMMXC (&vrs->wmmxc);
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}
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/* Restore the registers from the stack. Do this by saving the
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current WMMXC registers to a memory area, moving the in-memory
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values into that area, and restoring from the whole area. */
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__gnu_Unwind_Save_WMMXC (&tmp);
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sp = (_uw *) vrs->core.r[R_SP];
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for (i = 0; i < 4; i++)
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if (discriminator & (1 << i))
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tmp.wc[i] = *(sp++);
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/* Set the new stack pointer. */
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vrs->core.r[R_SP] = (_uw) sp;
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/* Reload the registers. */
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__gnu_Unwind_Restore_WMMXC (&tmp);
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}
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return _UVRSR_OK;
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default:
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return _UVRSR_FAILED;
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}
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@ -1,3 +1,7 @@
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2007-03-07 Joseph Myers <joseph@codesourcery.com>
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* g++.dg/eh/arm-iwmmxt-unwind.C: New test.
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2007-03-07 Paolo Bonzini <bonzini@gnu.org>
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* gcc.dg/var-expand1.c: Add newline at end of file.
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@ -0,0 +1,47 @@
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/* Test unwinding of iWMMXt register saves. */
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/* Origin: Joseph Myers <joseph@codesourcery.com> */
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/* { dg-do run } */
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/* { dg-require-effective-target arm32 } */
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#ifdef __IWMMXT__
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extern "C" void abort (void);
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extern "C" void exit (int);
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void
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foo (void)
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{
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register long long wr10 asm("wr10") = 0;
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register long long wr11 asm("wr11") = 1;
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register long long wr12 asm("wr12") = 2;
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register long long wr14 asm("wr14") = 4;
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register long long wr15 asm("wr15") = 5;
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asm volatile ("" : "+y" (wr10), "+y" (wr11), "+y" (wr12), "+y" (wr14), "+y" (wr15));
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throw "";
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}
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int
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main (void)
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{
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register long long wr10 asm("wr10") = 10;
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register long long wr11 asm("wr11") = 11;
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register long long wr12 asm("wr12") = 12;
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register long long wr13 asm("wr13") = 13;
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register long long wr14 asm("wr14") = 14;
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register long long wr15 asm("wr15") = 15;
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asm volatile ("" : "+y" (wr10), "+y" (wr11), "+y" (wr12), "+y" (wr13), "+y" (wr14), "+y" (wr15));
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try {
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foo ();
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} catch (...) {
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asm volatile ("" : "+y" (wr10), "+y" (wr11), "+y" (wr12), "+y" (wr13), "+y" (wr14), "+y" (wr15));
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if (wr10 != 10 || wr11 != 11 || wr12 != 12 || wr13 != 13 || wr14 != 14 || wr15 != 15)
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abort ();
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}
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exit (0);
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}
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#else
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int
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main (void)
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{
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}
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#endif
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