mirror of
git://gcc.gnu.org/git/gcc.git
synced 2025-04-19 13:21:00 +08:00
e19da24c65
2009-04-02 Chao-ying Fu <fu@mips.com> James Grosbach <james.grosbach@microchip.com> * config/mips/mips.c (mips_frame_info): Add acc_mask, num_acc, num_cop0_regs, acc_save_offset, cop0_save_offset, acc_sp_offset, cop0_sp_offset. (machine_function): Add interrupt_handler_p, use_shadow_register_set_p, keep_interrupts_masked_p, use_debug_exception_return_p. (mips_attribute_table): Add interrupt, use_shadow_register_set, keep_interrupts_masked, use_debug_exception_return. (mips_interrupt_type_p, mips_use_shadow_register_set_p, mips_keep_interrupts_masked_p, mips_use_debug_exception_return_p): New functions. (mips_function_ok_for_sibcall): Return false for interrupt handlers. (mips_print_operand): Process COP0 registers to print $0 .. $31 correctly for GAS to process. (mips_interrupt_extra_call_saved_reg_p): New function. (mips_cfun_call_saved_reg_p): For interrupt handlers, we need to check extra registers. (mips_cfun_might_clobber_call_saved_reg_p): Likewise. (mips_compute_frame_info): Add supports for interrupt context that includes doubleword accumulators and COP0 registers. (mips_for_each_saved_acc): New function. (mips_for_each_saved_gpr_and_fpr): Change the function name from mips_for_each_saved_reg. (mips_save_reg): Save accumulators. (mips_kernel_reg_p): A new for_each_rtx callback. (mips_expand_prologue): Support interrupt handlers. (mips_restore_reg): Restore accumulators. (mips_expand_epilogue): Support interrupt handlers. (mips_can_use_return_insn): Return false for interrupt handlers. (mips_epilogue_uses): New function. * config/mips/mips.md (UNSPEC_ERET, UNSPEC_DERET, UNSPEC_DI, UNSPEC_EHB, UNSPEC_RDPGPR, UNSPEC_COP0): New UNSPEC. (mips_eret, mips_deret, mips_di, mips_ehb, mips_rdpgpr, cop0_move): New instructions. * config/mips/mips-protos.h (mips_epilogue_uses): Declare. * config/mips/mips.h (K0_REG_NUM, K1_REG_NUM, KERNEL_REG_P): New defines. (COP0_STATUS_REG_NUM, COP0_CAUSE_REG_NUM, COP0_EPC_REG_NUM): New defines. (CAUSE_IPL, SR_IPL, SR_EXL, SR_IE): New defines. (MIPS_PROLOGUE_TEMP_REGNUM, MIPS_EPILOGUE_TEMP_REGNUM): For interrupt handlers, we use K0 as the temporary register. (EPILOGUE_USES): Change to a function call. * config/mips/sde.h (MIPS_EPILOGUE_TEMP_REGNUM): For interrupt handlers, we use K0 as the temporary register. * doc/extend.texi (Function Attributes): Document interrupt, use_shadow_register_set, keep_interrupts_masked, use_debug_exception_return for MIPS attributes. Co-Authored-By: James Grosbach <james.grosbach@microchip.com> From-SVN: r145481
This directory contains the GNU Compiler Collection (GCC). The GNU Compiler Collection is free software. See the file COPYING for copying permission. The manuals, and some of the runtime libraries, are under different terms; see the individual source files for details. The directory INSTALL contains copies of the installation information as HTML and plain text. The source of this information is gcc/doc/install.texi. The installation information includes details of what is included in the GCC sources and what files GCC installs. See the file gcc/doc/gcc.texi (together with other files that it includes) for usage and porting information. An online readable version of the manual is in the files gcc/doc/gcc.info*. See http://gcc.gnu.org/bugs.html for how to report bugs usefully.