| /* Copyright (C) 1998-2022 Free Software Foundation, Inc. |
| Contributed by Joern Rennecke |
| |
| This file is part of GCC. |
| |
| GCC is free software; you can redistribute it and/or modify |
| it under the terms of the GNU General Public License as published by |
| the Free Software Foundation; either version 3, or (at your option) |
| any later version. |
| |
| GCC 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 General Public License for more details. |
| |
| You should have received a copy of the GNU General Public License |
| along with GCC; see the file COPYING3. If not see |
| <http://www.gnu.org/licenses/>. */ |
| |
| #include <stdlib.h> |
| #include <stdio.h> |
| #include <string.h> |
| |
| #define IN_TARGET_CODE 1 |
| |
| #include "config.h" |
| |
| #define IN_GEN_AVR_MMCU_TEXI |
| |
| #include "avr-devices.cc" |
| |
| // Get rid of "defaults.h". We just need tm.h for `WITH_AVRLIBC' and |
| // and `WITH_RTEMS'. */ |
| #define GCC_DEFAULTS_H |
| |
| #include "tm.h" |
| |
| // Mimic the include order as specified in config.gcc::tm_file. |
| |
| #include "specs.h" |
| |
| #if defined (WITH_AVRLIBC) |
| #include "avrlibc.h" |
| #endif |
| |
| |
| #define SPECFILE_DOC_URL \ |
| "https://gcc.gnu.org/onlinedocs/gcc/Spec-Files.html" |
| |
| #define SPECFILE_USAGE_URL \ |
| "https://gcc.gnu.org/gcc-5/changes.html" |
| |
| |
| static const char header[] = |
| "#\n" |
| "# Generated by : ./gcc/config/avr/gen-avr-mmcu-specs.cc\n" |
| "# Generated from : ./gcc/config/gcc.cc\n" |
| "# ./gcc/config/avr/specs.h\n" |
| #if defined (WITH_AVRLIBC) |
| "# ./gcc/config/avr/avrlibc.h\n" |
| #endif |
| "# Used by : avr-gcc compiler driver\n" |
| "# Used for : building command options for sub-processes\n" |
| "#\n" |
| "# See <" SPECFILE_DOC_URL ">\n" |
| "# for a documentation of spec files.\n" |
| "\n"; |
| |
| static const char help_copy_paste[] = |
| "# If you intend to use an existing device specs file as a starting point\n" |
| "# for a new device spec file, make sure you are copying from a specs\n" |
| "# file for a device from the same core architecture and SP width.\n" |
| "# See <" SPECFILE_USAGE_URL "> for a description\n" |
| "# of how to use such own spec files.\n"; |
| |
| #if defined (WITH_AVRLIBC) |
| static const char help_dev_lib_name[] = |
| "# AVR-LibC's avr/io.h uses the device specifying macro to determine\n" |
| "# the name of the device header. For example, -mmcu=atmega8a triggers\n" |
| "# the definition of __AVR_ATmega8A__ and avr/io.h includes the device\n" |
| "# header 'iom8a.h' by means of:\n" |
| "#\n" |
| "# ...\n" |
| "# #elif defined (__AVR_ATmega8A__)\n" |
| "# # include <avr/iom8a.h>\n" |
| "# #elif ...\n" |
| "# \n" |
| "# If no device macro is defined, AVR-LibC uses __AVR_DEV_LIB_NAME__\n" |
| "# as fallback to determine the name of the device header as\n" |
| "#\n" |
| "# \"avr/io\" + __AVR_DEV_LIB_NAME__ + \".h\"\n" |
| "#\n" |
| "# If you provide your own specs file for a device not yet known to\n" |
| "# AVR-LibC, you can now define the hook macro __AVR_DEV_LIB_NAME__\n" |
| "# as needed so that\n" |
| "#\n" |
| "# #include <avr/io.h>\n" |
| "#\n" |
| "# will include the desired device header. For ATmega8A the supplement\n" |
| "# to *cpp_avrlibc would read\n" |
| "#\n" |
| "# -D__AVR_DEV_LIB_NAME__=m8a\n" |
| "\n"; |
| #endif // WITH_AVRLIBC |
| |
| static void |
| print_mcu (const avr_mcu_t *mcu) |
| { |
| const char *sp8_spec; |
| const char *rcall_spec; |
| const avr_mcu_t *arch_mcu; |
| const avr_arch_t *arch; |
| enum avr_arch_id arch_id = mcu->arch_id; |
| |
| for (arch_mcu = mcu; arch_mcu->macro; ) |
| arch_mcu--; |
| if (arch_mcu->arch_id != arch_id) |
| exit (EXIT_FAILURE); |
| |
| arch = &avr_arch_types[arch_id]; |
| |
| char name[100]; |
| if (snprintf (name, sizeof name, "specs-%s", mcu->name) >= (int) sizeof name) |
| exit (EXIT_FAILURE); |
| |
| FILE *f = fopen (name ,"w"); |
| |
| bool absdata = (mcu->dev_attribute & AVR_ISA_LDS) != 0; |
| bool errata_skip = (mcu->dev_attribute & AVR_ERRATA_SKIP) != 0; |
| bool rmw = (mcu->dev_attribute & AVR_ISA_RMW) != 0; |
| bool sp8 = (mcu->dev_attribute & AVR_SHORT_SP) != 0; |
| bool rcall = (mcu->dev_attribute & AVR_ISA_RCALL); |
| bool is_arch = mcu->macro == NULL; |
| bool is_device = ! is_arch; |
| int flash_pm_offset = 0; |
| |
| if (arch->flash_pm_offset |
| && mcu->flash_pm_offset |
| && mcu->flash_pm_offset != arch->flash_pm_offset) |
| { |
| flash_pm_offset = mcu->flash_pm_offset; |
| } |
| |
| if (is_arch |
| && (ARCH_AVR2 == arch_id |
| || ARCH_AVR25 == arch_id)) |
| { |
| // Leave "avr2" and "avr25" alone. These two architectures are |
| // the only ones that mix devices with 8-bit SP and 16-bit SP. |
| sp8_spec = ""; |
| } |
| else |
| { |
| sp8_spec = sp8 ? "-msp8" :"%<msp8"; |
| } |
| |
| if (is_arch |
| && ARCH_AVRXMEGA3 == arch_id) |
| { |
| // Leave "avrxmega3" alone. This architectures is the only one |
| // that mixes devices with and without JMP / CALL. |
| rcall_spec = ""; |
| } |
| else |
| { |
| rcall_spec = rcall ? "-mshort-calls" : "%<mshort-calls"; |
| } |
| |
| fprintf (f, "#\n" |
| "# Auto-generated specs for AVR "); |
| if (is_arch) |
| fprintf (f, "core architecture %s\n", arch->name); |
| else |
| fprintf (f, "device %s (core %s, %d-bit SP%s)\n", mcu->name, |
| arch->name, sp8 ? 8 : 16, rcall ? ", short-calls" : ""); |
| fprintf (f, "%s\n", header); |
| |
| if (is_device) |
| fprintf (f, "%s\n", help_copy_paste); |
| |
| #if defined (WITH_AVRLIBC) |
| // AVR-LibC specific. See avrlibc.h for the specs using them as subspecs. |
| |
| if (is_device) |
| { |
| fprintf (f, "*avrlibc_startfile:\n"); |
| fprintf (f, "\tcrt%s.o%%s", mcu->name); |
| fprintf (f, "\n\n"); |
| |
| fprintf (f, "*avrlibc_devicelib:\n"); |
| fprintf (f, "\t%%{!nodevicelib:-l%s}", mcu->name); |
| fprintf (f, "\n\n"); |
| } |
| #endif // WITH_AVRLIBC |
| |
| // avr-gcc specific specs for the compilation / the compiler proper. |
| |
| int n_flash = 1 + (mcu->flash_size - 1) / 0x10000; |
| |
| fprintf (f, "*cc1_n_flash:\n" |
| "\t%%{!mn-flash=*:-mn-flash=%d}\n\n", n_flash); |
| |
| fprintf (f, "*cc1_rmw:\n%s\n\n", rmw |
| ? "\t%{!mno-rmw: -mrmw}" |
| : "\t%{mrmw}"); |
| |
| fprintf (f, "*cc1_errata_skip:\n%s\n\n", errata_skip |
| ? "\t%{!mno-skip-bug: -mskip-bug}" |
| : "\t%{!mskip-bug: -mno-skip-bug}"); |
| |
| fprintf (f, "*cc1_absdata:\n%s\n\n", absdata |
| ? "\t%{!mno-absdata: -mabsdata}" |
| : "\t%{mabsdata}"); |
| |
| // avr-gcc specific specs for assembling / the assembler. |
| |
| fprintf (f, "*asm_arch:\n\t-mmcu=%s\n\n", arch->name); |
| |
| #ifdef HAVE_AS_AVR_MLINK_RELAX_OPTION |
| fprintf (f, "*asm_relax:\n\t%s\n\n", ASM_RELAX_SPEC); |
| #endif // have avr-as --mlink-relax |
| |
| #ifdef HAVE_AS_AVR_MRMW_OPTION |
| fprintf (f, "*asm_rmw:\n%s\n\n", rmw |
| ? "\t%{!mno-rmw: -mrmw}" |
| : "\t%{mrmw}"); |
| #endif // have avr-as -mrmw |
| |
| #ifdef HAVE_AS_AVR_MGCCISR_OPTION |
| fprintf (f, "*asm_gccisr:\n%s\n\n", |
| "\t%{!mno-gas-isr-prologues: -mgcc-isr}"); |
| #endif // have avr-as -mgcc-isr |
| |
| fprintf (f, "*asm_errata_skip:\n%s\n\n", errata_skip |
| ? "\t%{mno-skip-bug}" |
| : "\t%{!mskip-bug: -mno-skip-bug}"); |
| |
| // avr-specific specs for linking / the linker. |
| |
| int wrap_k = |
| mcu->flash_size == 0x2000 ? 8 |
| : mcu->flash_size == 0x4000 ? 16 |
| : mcu->flash_size == 0x8000 ? 32 |
| : mcu->flash_size == 0x10000 ? 64 |
| : 0; |
| |
| fprintf (f, "*link_pmem_wrap:\n"); |
| if (wrap_k == 8) |
| fprintf (f, "\t%%{!mno-pmem-wrap-around: --pmem-wrap-around=8k}"); |
| else if (wrap_k > 8) |
| fprintf (f, "\t%%{mpmem-wrap-around: --pmem-wrap-around=%dk}", wrap_k); |
| fprintf (f, "\n\n"); |
| |
| fprintf (f, "*link_relax:\n\t%s\n\n", LINK_RELAX_SPEC); |
| |
| fprintf (f, "*link_arch:\n\t%s", LINK_ARCH_SPEC); |
| if (is_device |
| && flash_pm_offset) |
| fprintf (f, " --defsym=__RODATA_PM_OFFSET__=0x%x", flash_pm_offset); |
| fprintf (f, "\n\n"); |
| |
| if (is_device) |
| { |
| fprintf (f, "*link_data_start:\n"); |
| if (mcu->data_section_start |
| != arch->default_data_section_start) |
| fprintf (f, "\t%%{!Tdata:-Tdata 0x%lX}", |
| 0x800000UL + mcu->data_section_start); |
| fprintf (f, "\n\n"); |
| |
| fprintf (f, "*link_text_start:\n"); |
| if (mcu->text_section_start != 0x0) |
| fprintf (f, "\t%%{!Ttext:-Ttext 0x%lX}", 0UL + mcu->text_section_start); |
| fprintf (f, "\n\n"); |
| } |
| |
| // Specs known to GCC. |
| |
| if (is_device) |
| { |
| fprintf (f, "*self_spec:\n"); |
| fprintf (f, "\t%%{!mmcu=avr*: %%<mmcu=* -mmcu=%s} ", arch->name); |
| fprintf (f, "%s ", rcall_spec); |
| fprintf (f, "%s\n\n", sp8_spec); |
| |
| #if defined (WITH_AVRLIBC) |
| fprintf (f, "%s\n", help_dev_lib_name); |
| |
| fprintf (f, "*cpp_avrlibc:\n"); |
| fprintf (f, "\t-D__AVR_DEVICE_NAME__=%s", mcu->name); |
| fprintf (f, "\n\n"); |
| #endif // WITH_AVRLIBC |
| |
| fprintf (f, "*cpp_mcu:\n"); |
| fprintf (f, "\t-D%s", mcu->macro); |
| if (flash_pm_offset) |
| { |
| fprintf (f, " -U__AVR_PM_BASE_ADDRESS__"); |
| fprintf (f, " -D__AVR_PM_BASE_ADDRESS__=0x%x", flash_pm_offset); |
| } |
| fprintf (f, "\n\n"); |
| |
| fprintf (f, "*cpp:\n"); |
| fprintf (f, "\t%%(cpp_mcu)"); |
| #if defined (WITH_AVRLIBC) |
| fprintf (f, " %%(cpp_avrlibc)"); |
| #endif // WITH_AVRLIBC |
| fprintf (f, "\n\n"); |
| } |
| |
| fprintf (f, "# End of file\n"); |
| |
| fclose (f); |
| } |
| |
| |
| int main (void) |
| { |
| for (const avr_mcu_t *mcu = avr_mcu_types; mcu->name; mcu++) |
| print_mcu (mcu); |
| |
| return EXIT_SUCCESS; |
| } |