213 lines
6.3 KiB
C
213 lines
6.3 KiB
C
#if !defined(SY__H)
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#define SY__H
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#include "symbol_set.base.h"
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/*~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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~~~~~~~~~~~~~~~~~~~~~~~~ Copy-Pastable Setup ~~~~~~~~~~~~~~~~~~~~~~~~~
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~~ To define a Symbol Set:
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~~ copy the code below
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~~ replace ZZZ: to name the symbol set
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~~ replace Typezz: to set the type of the symbol set
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~~ replace secz: to name of the data section of the symbol set
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~~ pick and complete the sections with "..."s
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*/
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#if 0
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#define SYMBOL_SET_DEFINE ZZZ
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#define ZZZ_Type Typezz
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#define ZZZ_section ".sy.secz"
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#define ZZZ_marker secz
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#include "symbol_set.define.h"
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// basic struct def with a name
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#define ZZZ_DEF(N,...) SyDefine(ZZZ, N) = { ... }
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// def with attached function body
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// replace funczz: to prefix namespace unique functions
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// fill ... sections appropriately
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#define ZZZ_DEF(N,...) \
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static void funczz##N(void*); \
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SyDefine(ZZZ, N) = { funczz##N, ... }; \
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static void funczz##N(void *ptr)
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// nameless def
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#define ZZZ_DEF(...) SyDefineUnnamed(ZZZ) = { ... }
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#endif
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/*~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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~~~~~~~~~~~~~~~~~~ Loop Boilerplates ~~~~~~~~~~~~~~~~~*/
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#if 0
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{
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for (SyEach(ZZZ, zzz_ptr)){
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zzz_ptr->
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}
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}
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{
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for (SyEachID(ZZZ, zzz_id)){
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[zzz_id]
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}
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}
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#endif
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/*~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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~~~~~~~~~~~~~~~~~~~~~~~~ User Primitives ~~~~~~~~~~~~~~~~~~~~~~~~~~~*/
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#define SyType(S) SY__GLUE(S,_Type)
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#define SyDeclare(S,N) SY__ALIGN_AS_LIT(8) SY__SEC_RW(S##_section) SyType(S) SY__SYMBOL(S,N)
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#define SyDefine(S,N) SY__DO_NOT_ELIMINATE(SY__SYMBOL(S,N)) SyDeclare(S,N)
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#define SyDefineUnnamed(S) SyDefine(S,SY__GLUE(unnamed,__COUNTER__))
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#define SyAddress(S,N) (&SY__SYMBOL(S,N))
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#define SyID(S,N) SyIDFromAddress_Unchecked(S,SyAddress(S,N))
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#define SyRaw(S,N) (SY__UAddr)(SyAddress(S,N))
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#if SY__OS_WINDOWS
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# define SyFirst(S) SY__FIRST(S)
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# define SyOpl(S) SY__OPL(S)
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#elif SY__OS_LINUX
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# define SyFirst(S) (&SY__FIRST(S))
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# define SyOpl(S) (&SY__OPL(S))
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#else
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# error missing implementation set locator for this OS
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#endif
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#define SyStride(S) SY__ROUND_UP_POW2(sizeof(SyType(S)), 8)
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#define SyCount(S) (((SY__U8*)SyOpl(S) - (SY__U8*)SyFirst(S))/SyStride(S))
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#define SyNext(S,addr) (SyType(S)*)((SY__U8*)addr + SyStride(S))
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#define SyEach(S,var) SyType(S)*var=SyFirst(S); var<SyOpl(S); var=SyNext(S,var)
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#define SyEachID(S,var) SY__U32 var=1; var<=SyCount(S); var+=1
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#define SyIDFromAddress(S,addr) (SyAddressCheck(S,addr)?SyIDFromAddress_Unchecked(S,addr):0)
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#define SyAddressFromID(S,id) (SyIDCheck(S,id)?SyAddressFromID_Unchecked(S,id):0)
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#define SyAddressCheck(S,addr) (SyFirst(S) <= (addr) && (addr) <= SyOpl(S))
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#define SyIDCheck(S,id) (1 <= (id) && (id) <= SyCount(S))
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#define SyIDFromAddress_Unchecked(S,addr) ((SY__U32)(1 + ((SY__U8*)(addr) - (SY__U8*)SyFirst(S))/SyStride(S)))
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#define SyAddressFromID_Unchecked(S,id) ((SyType(S)*)((SY__U8*)SyFirst(S) + ((id) - 1)*SyStride(S)))
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#define SyIDFromRaw(S,raw) SyIDFromAddress(S,(SyType(S)*)(raw))
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#define SyIDFromRaw_Unchecked(S,raw) SyIDFromAddress_Unchecked(S,(SyType(S)*)(raw))
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#define SyFlag(S,N) (1llu << (SyID(S,N) - 1))
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/*~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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~~~~~~~~~~~~~~~~~~~ Internal ~~~~~~~~~~~~~~~~~~~~~~*/
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#define SY__SYMBOL(S,N) SY__GLUE(S,SY__GLUE(__,N))
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#define SY__FIRST_(S) SY__GLUE(syfirst__, S##_marker)
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#define SY__OPL_(S) SY__GLUE(syopl__, S##_marker)
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#define SY__FIRST(S) SY__FIRST_(S)
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#define SY__OPL(S) SY__OPL_(S)
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#if SY__OS_WINDOWS
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void sy__section_init(char *name, SY__U32 name_size, void **first_out, void **opl_out);
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#endif
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// I dropped this here so that if you copy paste any of the
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// above and forget to replace Typezz, you'll get auto-int like
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// behavior from your error messages.
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#define Typezz int
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#endif //SY__H
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/*~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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~~~~~~~~~~~~~~~~~~~~~ Function Definitions ~~~~~~~~~~~~~~~~~~~~~~~~~*/
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#if SY__MAIN && SY__OS_WINDOWS && !defined(SY__MAIN_DEFINITIONS)
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#define SY__MAIN_DEFINITIONS 1
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#define SY__PE_MSDOS_MAGIC 0x5A4D
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struct SY__PE_DosHeader{
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SY__U16 magic;
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SY__U16 last_page_size;
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SY__U16 page_count;
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SY__U16 reloc_count;
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SY__U16 paragraph_header_size;
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SY__U16 min_paragraph;
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SY__U16 max_paragraph;
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SY__U16 init_ss;
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SY__U16 init_sp;
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SY__U16 checksum;
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SY__U16 init_ip;
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SY__U16 init_cs;
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SY__U16 reloc_table_file_off;
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SY__U16 overlay_number;
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SY__U16 reserved[4];
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SY__U16 oem_id;
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SY__U16 oem_info;
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SY__U16 reserved2[10];
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SY__U32 coff_file_offset;
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};
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#define SY__PE_SIGNATURE 0x00004550
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struct SY__PE_CoffHeader{
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SY__U16 machine_type;
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SY__U16 section_count;
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SY__U32 time_stamp;
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SY__U32 symbol_table_foff;
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SY__U32 symbol_count;
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SY__U16 optional_header_size;
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SY__U16 flags;
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};
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struct SY__PE_SectionHeader{
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SY__U8 name[8];
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SY__U32 vsize;
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SY__U32 voff;
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SY__U32 fsize;
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SY__U32 foff;
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SY__U32 relocations_foff;
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SY__U32 line_numbers_foff;
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SY__U16 relocation_count;
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SY__U16 line_number_count;
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SY__U32 flags;
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};
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void
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sy__section_init(char *name, SY__U32 name_size,
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void **first_out, void **opl_out){
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if (name_size <= 8){
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extern SY__U8 __ImageBase[];
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SY__U8 *base = __ImageBase;
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struct SY__PE_DosHeader *dos = (struct SY__PE_DosHeader*)base;
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if (dos->magic == SY__PE_MSDOS_MAGIC){
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SY__U32 *pe_signature = (SY__U32*)(base + dos->coff_file_offset);
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if (*pe_signature == SY__PE_SIGNATURE){
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struct SY__PE_CoffHeader *coff = (struct SY__PE_CoffHeader*)(pe_signature + 1);
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SY__U32 sections_offset = (dos->coff_file_offset + sizeof(*pe_signature) +
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sizeof(*coff) + coff->optional_header_size);
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SY__U32 section_count = coff->section_count;
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struct SY__PE_SectionHeader*
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section = (struct SY__PE_SectionHeader*)(base + sections_offset);
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for (SY__U32 i = 0; i < section_count; i += 1, section += 1){
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SY__B32 match = 1;
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for (SY__U32 j = 0; j < 8; j += 1){
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if (name[j] != section->name[j]){
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match = 0;
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break;
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}
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if (name[j] == 0){
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break;
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}
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}
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if (match){
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*first_out = base + section->voff;
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*opl_out = base + section->voff + section->vsize;
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break;
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}
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}
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}
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}
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}
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}
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#endif //SY__MAIN_DEFINITIONS
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