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Merge pull request #1 from bartoldeman/ia16-elf-gcc

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Ia16 elf gcc
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bartoldeman 2018-07-11 16:14:29 -04:00 committed by GitHub
commit 0954613e2a
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9 changed files with 37 additions and 81 deletions
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7
docs/build.txt
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@ -37,10 +37,11 @@ You can now also cross compile with T.K. Chia's fork of ia16-elf-gcc,
which is available at https://github.com/tkchia/gcc-ia16, using which is available at https://github.com/tkchia/gcc-ia16, using
make all COMPILER=gcc make all COMPILER=gcc
or by setting COMPILER=gcc in config.mak. If you are using Ubuntu or by setting COMPILER=gcc in config.mak. If you are using Ubuntu
Linux 16.04 LTS (Xenial Xerus), there are precompiled ia16-elf-gcc Linux 16.04 LTS (Xenial Xerus) or Ubuntu Linux 14.04 LTS (Trusty
packages at https://launchpad.net/~tkchia/+archive/ubuntu/build-ia16/. Tahr), there are precompiled ia16-elf-gcc packages at
https://launchpad.net/~tkchia/+archive/ubuntu/build-ia16/.
Otherwise, for now ia16-elf-gcc needs to be compiled from source. Otherwise, for now ia16-elf-gcc needs to be compiled from source.
Only releases 20171210 and later are supported. Only releases 20180708 and later are supported.
Notes: Notes:
====== ======

4
hdr/portab.h
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@ -337,7 +337,11 @@ typedef signed long LONG;
#define FP_SEG(fp) ((unsigned)((ULONG)(VOID FAR *)(fp)>>16)) #define FP_SEG(fp) ((unsigned)((ULONG)(VOID FAR *)(fp)>>16))
#endif #endif
#if defined(__GNUC__) && defined(__BUILTIN_IA16_FP_OFF)
#define FP_OFF(fp) __builtin_ia16_FP_OFF(fp)
#else
#define FP_OFF(fp) ((unsigned)(fp)) #define FP_OFF(fp) ((unsigned)(fp))
#endif
#endif #endif
#endif #endif

5
kernel/init-dat.h
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@ -28,9 +28,8 @@ extern __segment DosTextSeg;
#elif defined(__GNUC__) #elif defined(__GNUC__)
#define DosTextSeg 0x70 #define DosTextSeg 0x70
/* XXX not supported yet */ #define DOSFAR FAR
#define DOSFAR #define DOSTEXTFAR FAR
#define DOSTEXTFAR
#undef DOSDATA #undef DOSDATA
#undef DOSTEXT #undef DOSTEXT
#define DOSDATA(x) (*(typeof(x) FAR *)MK_FP(DosDataSeg, (size_t)&(x))) #define DOSDATA(x) (*(typeof(x) FAR *)MK_FP(DosDataSeg, (size_t)&(x)))

39
kernel/init-mod.h
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@ -265,38 +265,21 @@ extern char master_env[128];
extern struct lol FAR *LoL; extern struct lol FAR *LoL;
extern struct dhdr DOSTEXTFAR ASM blk_dev; /* Block device (Disk) driver */ extern struct dhdr DOSTEXTFAR ASM blk_dev; /* Block device (Disk) driver */
#define blk_dev DOSTEXT(blk_dev)
extern struct buffer FAR *DOSFAR firstAvailableBuf; /* first 'available' buffer */ extern struct buffer FAR *DOSFAR firstAvailableBuf; /* first 'available' buffer */
#define firstAvailableBuf DOSDATA(firstAvailableBuf)
#ifdef __GNUC__
extern struct lol ASM DATASTART;
#else
extern struct lol ASM FAR DATASTART; extern struct lol ASM FAR DATASTART;
#endif
#define DATASTART DOSDATA(DATASTART)
extern BYTE DOSFAR ASM _HMATextAvailable; /* first byte of available CODE area */ extern BYTE DOSFAR ASM _HMATextAvailable; /* first byte of available CODE area */
#ifdef __GNUC__
extern BYTE ASM _HMATextStart[]; /* first byte of HMAable CODE area */
extern BYTE ASM _HMATextEnd[];
#else
extern BYTE FAR ASM _HMATextStart[]; /* first byte of HMAable CODE area */ extern BYTE FAR ASM _HMATextStart[]; /* first byte of HMAable CODE area */
extern BYTE FAR ASM _HMATextEnd[]; extern BYTE FAR ASM _HMATextEnd[];
#endif
extern BYTE DOSFAR ASM break_ena; /* break enabled flag */ extern BYTE DOSFAR ASM break_ena; /* break enabled flag */
#define break_ena DOSDATA(break_ena) extern BYTE DOSFAR ASM _InitTextStart[]; /* first available byte of ram */
extern BYTE DOSFAR ASM _InitTextStart[], /* first available byte of ram */ extern BYTE DOSFAR ASM _InitTextEnd[];
DOSFAR ASM _InitTextEnd[], extern BYTE DOSFAR ASM ReturnAnyDosVersionExpected;
DOSFAR ASM ReturnAnyDosVersionExpected, extern BYTE DOSFAR ASM HaltCpuWhileIdle;
DOSFAR ASM HaltCpuWhileIdle;
#define ReturnAnyDosVersionExpected DOSDATA(ReturnAnyDosVersionExpected)
#define HaltCpuWhileIdle DOSDATA(HaltCpuWhileIdle)
extern BYTE DOSFAR ASM internal_data[]; extern BYTE DOSFAR ASM internal_data[];
#define internal_data DOSDATA(internal_data)
extern unsigned char DOSTEXTFAR ASM kbdType; extern unsigned char DOSTEXTFAR ASM kbdType;
#define kbdType DOSTEXT(kbdType)
extern struct { extern struct {
char ThisIsAConstantOne; char ThisIsAConstantOne;
@ -305,29 +288,23 @@ extern struct {
struct CountrySpecificInfo C; struct CountrySpecificInfo C;
} DOSFAR ASM nlsCountryInfoHardcoded; } DOSFAR ASM nlsCountryInfoHardcoded;
#define nlsCountryInfoHardcoded DOSDATA(nlsCountryInfoHardcoded)
#define nlsPackageHardcoded DOSDATA(nlsPackageHardcoded)
/* /*
data shared between DSK.C and INITDISK.C data shared between DSK.C and INITDISK.C
*/ */
extern UWORD DOSFAR LBA_WRITE_VERIFY; extern UWORD DOSFAR LBA_WRITE_VERIFY;
#define LBA_WRITE_VERIFY DOSDATA(LBA_WRITE_VERIFY)
/* original interrupt vectors, at 70:xxxx */ /* original interrupt vectors, at 70:xxxx */
extern struct lowvec { extern struct lowvec {
unsigned char intno; unsigned char intno;
intvec isv; intvec isv;
} DOSTEXTFAR ASM intvec_table[5]; } DOSTEXTFAR ASM intvec_table[5];
#define intvec_table DOSTEXT(intvec_table)
/* floppy parameter table, at 70:xxxx */ /* floppy parameter table, at 70:xxxx */
extern unsigned char DOSTEXTFAR ASM int1e_table[0xe]; extern unsigned char DOSTEXTFAR ASM int1e_table[0xe];
#define int1e_table DOSTEXT(int1e_table)
extern char DOSFAR DiskTransferBuffer[/*MAX_SEC_SIZE*/]; /* in dsk.c */ extern char DOSFAR DiskTransferBuffer[/*MAX_SEC_SIZE*/]; /* in dsk.c */
#define DiskTransferBuffer DOSDATA(DiskTransferBuffer)
struct RelocationTable { struct RelocationTable {
UBYTE jmpFar; UBYTE jmpFar;
@ -345,14 +322,10 @@ struct RelocatedEntry {
UWORD jmpSegment; UWORD jmpSegment;
}; };
extern struct RelocationTable extern struct RelocationTable DOSFAR ASM _HMARelocationTableStart[];
DOSFAR ASM _HMARelocationTableStart[], extern struct RelocationTable DOSFAR ASM _HMARelocationTableEnd[];
DOSFAR ASM _HMARelocationTableEnd[];
#define _HMARelocationTableStart DOSDATA(_HMARelocationTableStart)
#define _HMARelocationTableEnd DOSDATA(_HMARelocationTableEnd)
extern void FAR *DOSFAR ASM XMSDriverAddress; extern void FAR *DOSFAR ASM XMSDriverAddress;
#define XMSDriverAddress DOSDATA(XMSDriverAddress)
#ifdef __GNUC__ #ifdef __GNUC__
extern VOID _EnableA20(VOID); extern VOID _EnableA20(VOID);
extern VOID _DisableA20(VOID); extern VOID _DisableA20(VOID);

20
kernel/kernel.asm
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@ -938,18 +938,6 @@ global %1lshrsi3
; reserve space for far jump to cp/m routine ; reserve space for far jump to cp/m routine
times 5 db 0 times 5 db 0
%ifdef gcc
blk_driver_wrap:mov ax, _blk_driver
jmp short blkclk
clk_driver_wrap:mov ax, _clk_driver
blkclk: pop si
pop di
call ax
push di
push si
retf
%endif
;End of HMA segment ;End of HMA segment
segment HMA_TEXT_END segment HMA_TEXT_END
global __HMATextEnd global __HMATextEnd
@ -1042,21 +1030,13 @@ _cpm_entry: jmp 0:reloc_call_cpm_entry
global _reloc_call_blk_driver global _reloc_call_blk_driver
extern _blk_driver extern _blk_driver
_reloc_call_blk_driver: _reloc_call_blk_driver:
%ifdef gcc
jmp 0:blk_driver_wrap
%else
jmp 0:_blk_driver jmp 0:_blk_driver
%endif
call near forceEnableA20 call near forceEnableA20
global _reloc_call_clk_driver global _reloc_call_clk_driver
extern _clk_driver extern _clk_driver
_reloc_call_clk_driver: _reloc_call_clk_driver:
%ifdef gcc
jmp 0:clk_driver_wrap
%else
jmp 0:_clk_driver jmp 0:_clk_driver
%endif
call near forceEnableA20 call near forceEnableA20
global _CharMapSrvc ; in _DATA (see AARD) global _CharMapSrvc ; in _DATA (see AARD)

20
kernel/kernel.ld
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@ -4,7 +4,7 @@
OUTPUT_FORMAT(binary) OUTPUT_FORMAT(binary)
DOS_PSP = 0x60; DOS_PSP = 0x60;
MEMOFS = DOS_PSP * 16 - SIZEOF(.hdr); MEMOFS = DOS_PSP * 16 - SIZEOF(.msdos_mz_hdr);
/* these GROUPs play the same role as GROUPS (segments) in OMF */ /* these GROUPs play the same role as GROUPS (segments) in OMF */
PGROUP = (MEMOFS + LOADADDR(.ptext)) / 16; PGROUP = (MEMOFS + LOADADDR(.ptext)) / 16;
@ -22,7 +22,7 @@ SECTIONS
/* Fabricate a .exe header here. Although libbfd does have an /* Fabricate a .exe header here. Although libbfd does have an
"i386msdos" back-end which produces an "MZ" exe header, it cannot do "i386msdos" back-end which produces an "MZ" exe header, it cannot do
certain things (yet). */ certain things (yet). */
.hdr : { .msdos_mz_hdr : {
/* Signature. */ /* Signature. */
SHORT (0x5a4d) SHORT (0x5a4d)
/* Bytes in last 512-byte page. */ /* Bytes in last 512-byte page. */
@ -30,9 +30,9 @@ SECTIONS
/* Total number of 512-byte pages. */ /* Total number of 512-byte pages. */
SHORT (ALIGN(LOADADDR (.ibss), 512) / 512) SHORT (ALIGN(LOADADDR (.ibss), 512) / 512)
/* Relocation entries. */ /* Relocation entries. */
SHORT (0) SHORT ((__msdos_mz_rel_end - __msdos_mz_rel_start) / 4)
/* Header size in paragraphs. */ /* Header size in paragraphs. */
SHORT (SIZEOF(.hdr) / 16) SHORT (SIZEOF(.msdos_mz_hdr) / 16)
/* Minimum extra paragraphs. */ /* Minimum extra paragraphs. */
SHORT (ALIGN(SIZEOF (.ibss) + SIZEOF(.istack), 16) / 16) SHORT (ALIGN(SIZEOF (.ibss) + SIZEOF(.istack), 16) / 16)
/* Maximum extra paragraphs. */ /* Maximum extra paragraphs. */
@ -45,12 +45,18 @@ SECTIONS
. = 0x18; . = 0x18;
/* Relocation table offset. */ /* Relocation table offset. */
SHORT (. + 4) SHORT (. + 4)
/* Overlay number + padding */ /* Overlay number */
. = ALIGN (32); SHORT (0)
/* Relocations */
HIDDEN (__msdos_mz_rel_start = .);
*(.msdos_mz_reloc .msdos_mz_reloc.*)
HIDDEN (__msdos_mz_rel_end = .);
/* Padding */
. = ALIGN (16);
} }
/* Target PSP section. */ /* Target PSP section. */
.ptext 0 : AT (SIZEOF(.hdr)) { .ptext 0 : AT (SIZEOF(.msdos_mz_hdr)) {
*(PSP) *(PSP)
} }

10
kernel/main.c
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@ -68,12 +68,7 @@ __segment DosTextSeg = 0;
#endif #endif
struct lol FAR *LoL struct lol FAR *LoL = &DATASTART;
#ifndef __GNUC__
/* cannot initialize from far data with GCC */
= &DATASTART;
#endif
;
VOID ASMCFUNC FreeDOSmain(void) VOID ASMCFUNC FreeDOSmain(void)
{ {
@ -95,9 +90,6 @@ VOID ASMCFUNC FreeDOSmain(void)
at 50:e0 at 50:e0
*/ */
#ifdef __GNUC__
LoL = &DATASTART;
#endif
drv = LoL->BootDrive + 1; drv = LoL->BootDrive + 1;
p = MK_FP(0, 0x5e0); p = MK_FP(0, 0x5e0);
if (fmemcmp(p+2,"CONFIG",6) == 0) /* UPX */ if (fmemcmp(p+2,"CONFIG",6) == 0) /* UPX */

5
mkfiles/gcc.mak
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@ -54,8 +54,9 @@ CFLAGSC=
# -Wno-pointer-to-int-cast do not warn about FP_OFF # -Wno-pointer-to-int-cast do not warn about FP_OFF
# -Wno-pragmas do not warn about #pragma pack # -Wno-pragmas do not warn about #pragma pack
# -Werror treat all warnings as errors # -Werror treat all warnings as errors
# -mfar-function-if-far-return-type treat `int __far f ();' as a far function
ALLCFLAGS+=-I../hdr $(TARGETOPT) -mcmodel=small -fleading-underscore -fno-common -fpack-struct -ffreestanding -fcall-used-es -mrtd -Wno-pointer-to-int-cast -Wno-pragmas -Werror -Os -fno-strict-aliasing ALLCFLAGS+=-I../hdr $(TARGETOPT) -mcmodel=small -fleading-underscore -fno-common -fpack-struct -ffreestanding -fcall-used-es -mrtd -Wno-pointer-to-int-cast -Wno-pragmas -Werror -Os -fno-strict-aliasing -mfar-function-if-far-return-type
INITCFLAGS=$(ALLCFLAGS) -o $@ INITCFLAGS=$(ALLCFLAGS) -o $@
CFLAGS=$(ALLCFLAGS) -o $@ CFLAGS=$(ALLCFLAGS) -o $@
@ -67,7 +68,7 @@ ifeq ($(LOADSEG)0, 0)
LOADSEG=0x60 LOADSEG=0x60
endif endif
INITPATCH=objcopy --redefine-sym ___umodsi3=_init_umodsi3 --redefine-sym ___udivsi3=_init_udivsi3 --redefine-sym ___ashlsi3=_init_ashlsi3 --redefine-sym ___lshrsi3=_init_lshrsi3 INITPATCH=ia16-elf-objcopy --redefine-sym ___umodsi3=_init_umodsi3 --redefine-sym ___udivsi3=_init_udivsi3 --redefine-sym ___ashlsi3=_init_ashlsi3 --redefine-sym ___lshrsi3=_init_lshrsi3
CLDEF=1 CLDEF=1
CLT=gcc -DDOSC_TIME_H -I../hdr -o $@ CLT=gcc -DDOSC_TIME_H -I../hdr -o $@
CLC=$(CLT) CLC=$(CLT)

8
utils/exeflat.c
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@ -125,8 +125,8 @@ static int exeflat(const char *srcfile, const char *dstfile,
((DWORD) (header->exPages - 1) << 9) + header->exExtraBytes - ((DWORD) (header->exPages - 1) << 9) + header->exExtraBytes -
header->exHeaderSize * 16UL; header->exHeaderSize * 16UL;
printf("image size (less header) = %lu = 0x%lx\n", size, size); printf("image size (less header) = %lu = 0x%lx\n", size, size);
printf("first relocation offset = %u = 0x%u\n", header->exOverlay, printf("first relocation offset = %u = 0x%x\n", header->exRelocTable,
header->exOverlay); header->exRelocTable);
/* first read file into memory chunks */ /* first read file into memory chunks */
fseek(src, header->exHeaderSize * 16UL, SEEK_SET); fseek(src, header->exHeaderSize * 16UL, SEEK_SET);
@ -150,7 +150,7 @@ static int exeflat(const char *srcfile, const char *dstfile,
} }
if (fread(*curbuf, sizeof(char), bufsize, src) != bufsize) if (fread(*curbuf, sizeof(char), bufsize, src) != bufsize)
{ {
printf("Source file read error %ld %d\n", to_xfer, bufsize); printf("Source file read error %ld %d\n", to_xfer, (int)bufsize);
exit(1); exit(1);
} }
} }
@ -381,7 +381,7 @@ int main(int argc, char **argv)
if (silentcount >= LENGTH(silentSegments)) if (silentcount >= LENGTH(silentSegments))
{ {
printf("can't handle more then %d silent's\n", printf("can't handle more then %d silent's\n",
LENGTH(silentSegments)); (int)LENGTH(silentSegments));
exit(1); exit(1);
} }