From 265fe8b986ba6063f9b6e472c5b2070ff2d58a4e Mon Sep 17 00:00:00 2001 From: Joern Rennecke Date: Fri, 28 May 2004 12:32:09 +0000 Subject: 2004-05-28 Andrew Stubbs bfd: * Makefile.am: Regenerate dependencies. * Makefile.in: Regenerate. * archures.c: Add bfd_mach_sh3_nommu . * bfd-in2.h: Regenerate. * cpu-sh.c: Add sh3-nommu architecture. (bfd_to_arch_table): Create new table. (sh_get_arch_from_bfd_mach): Create new function. (sh_get_arch_up_from_bfd_mach): Create new function. (sh_merge_bfd_arch): Create new function. * elf32-sh.c (sh_ef_bfd_table): Add table. (sh_elf_check_relocs): Replace switch statement with use of sh_ef_bfd_table . (sh_elf_get_flags_from_mach): Add new function. (sh_find_elf_flags): Likewise. (sh_elf_copy_private_data): Replace most of non-elf contents with a call to sh_merge_bfd_arch() . gas: * Makefile.am: Regenerate dependecies. * Makefile.in: Regenerate. * config/tc-sh.c (valid_arch): Make unsigned. (preset_target_arch): Likewise. (md_begin): Use new architecture flags system. (get_specific): Likewise. (assemble_ppi): Likewise. (md_assemble): Likewise. Also fix error check for bad opcodes. (md_parse_option): Likewise. Also generate -isa values according to the table in bfd/cpu-sh.c instead of just constants. Also allow -up ISA variants. (sh_elf_final_processing): Replace if-else chain with a call to sh_find_elf_flags(). * testsuite/gas/sh/arch: New directory. * testsuite/gas/sh/arch/arch.exp: New test script. * testsuite/gas/sh/arch/arch_expected.txt: New file. * testsuite/gas/sh/arch/sh.s: New file. * testsuite/gas/sh/arch/sh2.s: New file. * testsuite/gas/sh/arch/sh-dsp.s: New file. * testsuite/gas/sh/arch/sh2e.s: New file. * testsuite/gas/sh/arch/sh3-nommu.s: New file. * testsuite/gas/sh/arch/sh3.s: New file. * testsuite/gas/sh/arch/sh3-dsp.s: New file. * testsuite/gas/sh/arch/sh3e.s: New file. * testsuite/gas/sh/arch/sh4-nommu-nofpu.s: New file. * testsuite/gas/sh/arch/sh4-nofpu.s: New file. * testsuite/gas/sh/arch/sh4.s: New file. * testsuite/gas/sh/arch/sh4a-nofpu.s: New file. * testsuite/gas/sh/arch/sh4al-dsp.s: New file. * testsuite/gas/sh/arch/sh4a.s: New file. include/elf: * sh.h (EF_SH_HAS_DSP): Remove. (EF_SH_HAS_FP): Remove. (EF_SH_MERGE_MACH): Remove. (EF_SH4_NOFPU): Convert to decimal. (EF_SH4A_NOFPU): Likewise. (EF_SH4_NOMMU_NOFPU): Likewise. (EF_SH3_NOMMU): Add new macro. (EF_SH_BFD_TABLE): Likewise. (sh_find_elf_flags): Add prototype. (sh_elf_get_flags_from_mach): Likewise. opcodes: * sh-dis.c (target_arch): Make unsigned. (print_insn_sh): Replace (most of) switch with a call to sh_get_arch_from_bfd_mach(). Also use new architecture flags system. * sh-opc.h: Redefine architecture flags values. Add sh3-nommu architecture. Reorganise _up macros so they make more visual sense. (SH_MERGE_ARCH_SET): Define new macro. (SH_VALID_BASE_ARCH_SET): Likewise. (SH_VALID_MMU_ARCH_SET): Likewise. (SH_VALID_CO_ARCH_SET): Likewise. (SH_VALID_ARCH_SET): Likewise. (SH_MERGE_ARCH_SET_VALID): Likewise. (SH_ARCH_SET_HAS_FPU): Likewise. (SH_ARCH_SET_HAS_DSP): Likewise. (SH_ARCH_UNKNOWN_ARCH): Likewise. (sh_get_arch_from_bfd_mach): Add prototype. (sh_get_arch_up_from_bfd_mach): Likewise. (sh_get_bfd_mach_from_arch_set): Likewise. (sh_merge_bfd_arc): Likewise. ld: * testsuite/ld-sh/arch/arch.exp: New test script. * testsuite/ld-sh/arch/arch_expected.txt: New file. * testsuite/ld-sh/arch/sh.s: New file. * testsuite/ld-sh/arch/sh2.s: New file. * testsuite/ld-sh/arch/sh-dsp.s: New file. * testsuite/ld-sh/arch/sh2e.s: New file. * testsuite/ld-sh/arch/sh3-nommu.s: New file. * testsuite/ld-sh/arch/sh3.s: New file. * testsuite/ld-sh/arch/sh3-dsp.s: New file. * testsuite/ld-sh/arch/sh3e.s: New file. * testsuite/ld-sh/arch/sh4-nommu-nofpu.s: New file. * testsuite/ld-sh/arch/sh4-nofpu.s: New file. * testsuite/ld-sh/arch/sh4.s: New file. * testsuite/ld-sh/arch/sh4a-nofpu.s: New file. * testsuite/ld-sh/arch/sh4al-dsp.s: New file. * testsuite/ld-sh/arch/sh4a.s: New file. --- bfd/cpu-sh.c | 201 ++++++++++++++++++++++++++++++++++++++++++++++++++++++++--- 1 file changed, 193 insertions(+), 8 deletions(-) (limited to 'bfd/cpu-sh.c') diff --git a/bfd/cpu-sh.c b/bfd/cpu-sh.c index be359df7090..98d72882dbc 100644 --- a/bfd/cpu-sh.c +++ b/bfd/cpu-sh.c @@ -22,20 +22,22 @@ #include "bfd.h" #include "sysdep.h" #include "libbfd.h" +#include "../opcodes/sh-opc.h" #define SH_NEXT &arch_info_struct[0] #define SH2_NEXT &arch_info_struct[1] #define SH2E_NEXT &arch_info_struct[2] #define SH_DSP_NEXT &arch_info_struct[3] #define SH3_NEXT &arch_info_struct[4] -#define SH3_DSP_NEXT &arch_info_struct[5] -#define SH3E_NEXT &arch_info_struct[6] -#define SH4_NEXT &arch_info_struct[7] -#define SH4A_NEXT &arch_info_struct[8] -#define SH4AL_DSP_NEXT &arch_info_struct[9] -#define SH4_NOFPU_NEXT &arch_info_struct[10] -#define SH4_NOMMU_NOFPU_NEXT &arch_info_struct[11] -#define SH4A_NOFPU_NEXT &arch_info_struct[12] +#define SH3_NOMMU_NEXT &arch_info_struct[5] +#define SH3_DSP_NEXT &arch_info_struct[6] +#define SH3E_NEXT &arch_info_struct[7] +#define SH4_NEXT &arch_info_struct[8] +#define SH4A_NEXT &arch_info_struct[9] +#define SH4AL_DSP_NEXT &arch_info_struct[10] +#define SH4_NOFPU_NEXT &arch_info_struct[11] +#define SH4_NOMMU_NOFPU_NEXT &arch_info_struct[12] +#define SH4A_NOFPU_NEXT &arch_info_struct[13] #define SH64_NEXT NULL static const bfd_arch_info_type arch_info_struct[] = @@ -96,6 +98,20 @@ static const bfd_arch_info_type arch_info_struct[] = bfd_default_scan, SH3_NEXT }, + { + 32, /* 32 bits in a word */ + 32, /* 32 bits in an address */ + 8, /* 8 bits in a byte */ + bfd_arch_sh, + bfd_mach_sh3_nommu, + "sh", /* arch_name */ + "sh3-nommu", /* printable name */ + 1, + FALSE, /* not the default */ + bfd_default_compatible, + bfd_default_scan, + SH3_NOMMU_NEXT + }, { 32, /* 32 bits in a word */ 32, /* 32 bits in an address */ @@ -239,3 +255,172 @@ const bfd_arch_info_type bfd_sh_arch = bfd_default_scan, SH_NEXT }; + + +/* This table defines the mappings from the BFD internal numbering + system to the opcodes internal flags system. + It is used by the functions defined below. + The prototypes for these SH specific functions are found in + sh-opc.h . */ + +static struct { unsigned long bfd_mach, arch, arch_up; } bfd_to_arch_table[] = +{ + { bfd_mach_sh, arch_sh1, arch_sh1_up }, + { bfd_mach_sh2, arch_sh2, arch_sh2_up }, + { bfd_mach_sh2e, arch_sh2e, arch_sh2e_up }, + { bfd_mach_sh_dsp, arch_sh_dsp, arch_sh_dsp_up }, + { bfd_mach_sh3, arch_sh3, arch_sh3_up }, + { bfd_mach_sh3_nommu, arch_sh3_nommu, arch_sh3_nommu_up }, + { bfd_mach_sh3_dsp, arch_sh3_dsp, arch_sh3_dsp_up }, + { bfd_mach_sh3e, arch_sh3e, arch_sh3e_up }, + { bfd_mach_sh4, arch_sh4, arch_sh4_up }, + { bfd_mach_sh4a, arch_sh4a, arch_sh4a_up }, + { bfd_mach_sh4al_dsp, arch_sh4al_dsp, arch_sh4al_dsp_up }, + { bfd_mach_sh4_nofpu, arch_sh4_nofpu, arch_sh4_nofp_up }, + { bfd_mach_sh4_nommu_nofpu, arch_sh4_nommu_nofpu, arch_sh4_nommu_nofpu_up }, + { bfd_mach_sh4a_nofpu, arch_sh4a_nofpu, arch_sh4a_nofp_up }, + { 0, 0, 0 } /* Terminator. */ +}; + + +/* Convert a BFD mach number into the right opcodes arch flags + using the table above. */ + +unsigned int +sh_get_arch_from_bfd_mach (unsigned long mach) +{ + int i = 0; + + while (bfd_to_arch_table[i].bfd_mach != 0) + if (bfd_to_arch_table[i].bfd_mach == mach) + return bfd_to_arch_table[i].arch; + else + i++; + + /* mach not found. */ + BFD_FAIL(); + + return SH_ARCH_UNKNOWN_ARCH; +} + + +/* Convert a BFD mach number into a set of opcodes arch flags + describing all the compatible architectures (i.e. arch_up) + using the table above. */ + +unsigned int +sh_get_arch_up_from_bfd_mach (unsigned long mach) +{ + int i = 0; + + while (bfd_to_arch_table[i].bfd_mach != 0) + if (bfd_to_arch_table[i].bfd_mach == mach) + return bfd_to_arch_table[i].arch_up; + else + i++; + + /* mach not found. */ + BFD_FAIL(); + + return SH_ARCH_UNKNOWN_ARCH; +} + + +/* Convert an arbitary arch_set - not necessarily corresponding + directly to anything in the table above - to the most generic + architecture which supports all the required features, and + return the corresponding BFD mach. */ + +unsigned long +sh_get_bfd_mach_from_arch_set (unsigned int arch_set) +{ + unsigned long result = 0; + unsigned int best = ~arch_set; + unsigned int co_mask = ~0; + int i = 0; + + /* If arch_set permits variants with no coprocessor then do not allow + the other irrelevant co-processor bits to influence the choice: + e.g. if dsp is disallowed by arch_set, then the algorithm would + prefer fpu variants over nofpu variants because they also disallow + dsp - even though the nofpu would be the most correct choice. + This assumes that EVERY fpu/dsp variant has a no-coprocessor + counter-part, or their non-fpu/dsp instructions do not have the + no co-processor bit set. */ + if (arch_set & arch_sh_no_co) + co_mask = ~(arch_sh_sp_fpu | arch_sh_dp_fpu | arch_sh_has_dsp); + + while (bfd_to_arch_table[i].bfd_mach != 0) + { + unsigned int try = bfd_to_arch_table[i].arch_up & co_mask; + + /* Conceptually: Find the architecture with the least number + of extra features or, if they have the same number, then + the greatest number of required features. Disregard + architectures where the required features alone do + not describe a valid architecture. */ + if (((try & ~arch_set) < (best & ~arch_set) + || ((try & ~arch_set) == (best & ~arch_set) + && (~try & arch_set) < (~best & arch_set))) + && SH_MERGE_ARCH_SET_VALID (try, arch_set)) + { + result = bfd_to_arch_table[i].bfd_mach; + best = try; + } + + i++; + } + + /* This might happen if a new variant is added to sh-opc.h + but no corresponding entry is added to the table above. */ + BFD_ASSERT (result != 0); + + return result; +} + + +/* Merge the architecture type of two BFD files, such that the + resultant architecture supports all the features required + by the two input BFDs. + If the input BFDs are multually incompatible - i.e. one uses + DSP while the other uses FPU - or there is no known architecture + that fits the requirements then an error is emitted. */ + +bfd_boolean +sh_merge_bfd_arch (bfd *ibfd, bfd *obfd) +{ + unsigned int old_arch, new_arch, merged_arch; + + if (! _bfd_generic_verify_endian_match (ibfd, obfd)) + return FALSE; + + old_arch = sh_get_arch_up_from_bfd_mach (bfd_get_mach (obfd)); + new_arch = sh_get_arch_up_from_bfd_mach (bfd_get_mach (ibfd)); + + merged_arch = SH_MERGE_ARCH_SET (old_arch, new_arch); + + if (!SH_VALID_CO_ARCH_SET (merged_arch)) + { + (*_bfd_error_handler) + ("%s: uses %s instructions while previous modules use %s instructions", + bfd_archive_filename (ibfd), + SH_ARCH_SET_HAS_DSP (new_arch) ? "dsp" : "floating point", + SH_ARCH_SET_HAS_DSP (new_arch) ? "floating point" : "dsp"); + bfd_set_error (bfd_error_bad_value); + return FALSE; + } + else if (!SH_VALID_ARCH_SET (merged_arch)) + { + (*_bfd_error_handler) + ("internal error: merge of architecture '%s' with architecture '%s' produced unknown architecture\n", + bfd_printable_name (obfd), + bfd_printable_name (ibfd)); + bfd_set_error (bfd_error_bad_value); + return FALSE; + } + + bfd_default_set_arch_mach (obfd, bfd_arch_sh, + sh_get_bfd_mach_from_arch_set (merged_arch)); + + return TRUE; +} -- cgit v1.2.1