add start.cpp for C++ runtime
Previously static constructors were not being called. This also improves a few bit definitions.
This commit is contained in:
parent
949116b285
commit
2e4d2775b7
@ -8,7 +8,7 @@ CARCH = -m2 -mb
|
||||
CFLAGS += -falign-functions=4 -ffunction-sections -fdata-sections -fshort-enums -ffreestanding -nostdlib
|
||||
CFLAGS += -Wall -Werror -Wfatal-errors -Wno-error=unused-variable -g -gdwarf-4 $(OPT)
|
||||
LDFLAGS = --gc-sections --no-warn-rwx-segment --print-memory-usage --entry=_start
|
||||
CXXFLAGS = -fno-exceptions -fno-rtti
|
||||
CXXFLAGS = -fno-exceptions -fno-rtti -fno-threadsafe-statics
|
||||
|
||||
TARGET = sh2-none-elf-
|
||||
CC = $(TARGET)gcc
|
||||
|
||||
14
sh2.lds
14
sh2.lds
@ -28,13 +28,27 @@ SECTIONS
|
||||
*(.rodata)
|
||||
} > work_ram_h
|
||||
|
||||
.ctors ALIGN(4) : SUBALIGN(4)
|
||||
{
|
||||
KEEP(*(.ctors))
|
||||
KEEP(*(.ctors.*))
|
||||
} > work_ram_h
|
||||
|
||||
.bss ALIGN(4) (NOLOAD) : SUBALIGN(4)
|
||||
{
|
||||
*(.bss)
|
||||
} > work_ram_h
|
||||
|
||||
.bss.work_ram_l ALIGN(4) (NOLOAD) : SUBALIGN(4)
|
||||
{
|
||||
*(.bss.work_ram_l)
|
||||
} > work_ram_l
|
||||
|
||||
__bss_link_start = ADDR(.bss);
|
||||
__bss_link_end = ADDR(.bss) + SIZEOF(.bss);
|
||||
|
||||
__ctors_link_start = ADDR(.ctors);
|
||||
__ctors_link_end = ADDR(.ctors) + SIZEOF(.ctors);
|
||||
}
|
||||
|
||||
smpc = 0x20100000;
|
||||
|
||||
5
smpc.h
5
smpc.h
@ -316,3 +316,8 @@ enum digital_bit {
|
||||
DIGITAL__2__Z = (1 << 4),
|
||||
DIGITAL__2__L = (1 << 3),
|
||||
};
|
||||
|
||||
//enum keyboard_bit {
|
||||
#define KEYBOARD__MAKE(oreg) (((oreg) & (0b1000)) != 0)
|
||||
#define KEYBOARD__BREAK(oreg) (((oreg) & (0b0001)) != 0)
|
||||
//};
|
||||
|
||||
34
start.cpp
Normal file
34
start.cpp
Normal file
@ -0,0 +1,34 @@
|
||||
#include <stdint.h>
|
||||
|
||||
extern "C" uint32_t __bss_link_start __asm("__bss_link_start");
|
||||
extern "C" uint32_t __bss_link_end __asm("__bss_link_end");
|
||||
|
||||
typedef void(*init_t)(void);
|
||||
|
||||
extern "C" uint32_t __ctors_link_start __asm("__ctors_link_start");
|
||||
extern "C" uint32_t __ctors_link_end __asm("__ctors_link_end");
|
||||
|
||||
extern void main();
|
||||
|
||||
extern "C"
|
||||
void start(void)
|
||||
{
|
||||
uint32_t * start;
|
||||
uint32_t * end;
|
||||
|
||||
start = &__bss_link_start;
|
||||
end = &__bss_link_end;
|
||||
while (start < end) {
|
||||
*start++ = 0;
|
||||
}
|
||||
|
||||
start = &__ctors_link_start;
|
||||
end = &__ctors_link_end;
|
||||
while (start < end) {
|
||||
(reinterpret_cast<init_t>(*start++))();
|
||||
}
|
||||
|
||||
main();
|
||||
|
||||
while (1);
|
||||
}
|
||||
87
vdp2.h
87
vdp2.h
@ -348,8 +348,8 @@ enum pncn0_bit {
|
||||
PNCN0__N0CNSM = (1 << 14),
|
||||
PNCN0__N0SPR = (1 << 9),
|
||||
PNCN0__N0SCC = (1 << 8),
|
||||
#define PNCN0__N0SPLT(n) (n << 5)
|
||||
#define PNCN0__N0SCN(n) (n << 0)
|
||||
#define PNCN0__N0SPLT(n) ((n) << 5)
|
||||
#define PNCN0__N0SCN(n) ((n) << 0)
|
||||
};
|
||||
|
||||
enum pncn1_bit {
|
||||
@ -358,8 +358,8 @@ enum pncn1_bit {
|
||||
PNCN1__N1CNSM = (1 << 14),
|
||||
PNCN1__N1SPR = (1 << 9),
|
||||
PNCN1__N1SCC = (1 << 8),
|
||||
#define PNCN1__N1SPLT(n) (n << 5)
|
||||
#define PNCN1__N1SCN(n) (n << 0)
|
||||
#define PNCN1__N1SPLT(n) ((n) << 5)
|
||||
#define PNCN1__N1SCN(n) ((n) << 0)
|
||||
};
|
||||
|
||||
enum pncn2_bit {
|
||||
@ -368,8 +368,8 @@ enum pncn2_bit {
|
||||
PNCN2__N2CNSM = (1 << 14),
|
||||
PNCN2__N2SPR = (1 << 9),
|
||||
PNCN2__N2SCC = (1 << 8),
|
||||
#define PNCN2__N2SPLT(n) (n << 5)
|
||||
#define PNCN2__N2SCN(n) (n << 0)
|
||||
#define PNCN2__N2SPLT(n) ((n) << 5)
|
||||
#define PNCN2__N2SCN(n) ((n) << 0)
|
||||
};
|
||||
|
||||
enum pncn3_bit {
|
||||
@ -378,8 +378,8 @@ enum pncn3_bit {
|
||||
PNCN3__N3CNSM = (1 << 14),
|
||||
PNCN3__N3SPR = (1 << 9),
|
||||
PNCN3__N3SCC = (1 << 8),
|
||||
#define PNCN3__N3SPLT(n) (n << 5)
|
||||
#define PNCN3__N3SCN(n) (n << 0)
|
||||
#define PNCN3__N3SPLT(n) ((n) << 5)
|
||||
#define PNCN3__N3SCN(n) ((n) << 0)
|
||||
};
|
||||
|
||||
enum pncr_bit {
|
||||
@ -388,8 +388,8 @@ enum pncr_bit {
|
||||
PNCR__R0CNSM = (1 << 14),
|
||||
PNCR__R0SPR = (1 << 9),
|
||||
PNCR__R0SCC = (1 << 8),
|
||||
#define PNCR__R0SPLT(n) (n << 5)
|
||||
#define PNCR__R0SCN(n) (n << 0)
|
||||
#define PNCR__R0SPLT(n) ((n) << 5)
|
||||
#define PNCR__R0SCN(n) ((n) << 0)
|
||||
};
|
||||
|
||||
enum plsz_bit {
|
||||
@ -415,49 +415,49 @@ enum plsz_bit {
|
||||
PLSZ__N0PLSZ__2x2 = (0b11 << 0),
|
||||
};
|
||||
// enum mpofn_bit {
|
||||
#define MPOFN__N3MP(n) (n << 12)
|
||||
#define MPOFN__N2MP(n) (n << 8)
|
||||
#define MPOFN__N1MP(n) (n << 4)
|
||||
#define MPOFN__N0MP(n) (n << 0)
|
||||
#define MPOFN__N3MP(n) ((n) << 12)
|
||||
#define MPOFN__N2MP(n) ((n) << 8)
|
||||
#define MPOFN__N1MP(n) ((n) << 4)
|
||||
#define MPOFN__N0MP(n) ((n) << 0)
|
||||
// };
|
||||
// enum mpofr_bit {
|
||||
#define MPOFR__RBMP(n) (n << 4)
|
||||
#define MPOFR__RAMP(n) (n << 0)
|
||||
#define MPOFR__RBMP(n) ((n) << 4)
|
||||
#define MPOFR__RAMP(n) ((n) << 0)
|
||||
// };
|
||||
|
||||
// 4.8 Maps § Map Selection Register
|
||||
|
||||
// enum mpabn0_bit {
|
||||
#define MPABN0__N0MPB(n) (n << 8)
|
||||
#define MPABN0__N0MPA(n) (n << 0)
|
||||
#define MPABN0__N0MPB(n) ((n) << 8)
|
||||
#define MPABN0__N0MPA(n) ((n) << 0)
|
||||
// };
|
||||
// enum mpcdn0_bit {
|
||||
#define MPABN0__N0MPD(n) (n << 8)
|
||||
#define MPABN0__N0MPC(n) (n << 0)
|
||||
#define MPABN0__N0MPD(n) ((n) << 8)
|
||||
#define MPABN0__N0MPC(n) ((n) << 0)
|
||||
// };
|
||||
// enum mpabn1_bit {
|
||||
#define MPABN1__N1MPB(n) (n << 8)
|
||||
#define MPABN1__N1MPA(n) (n << 0)
|
||||
#define MPABN1__N1MPB(n) ((n) << 8)
|
||||
#define MPABN1__N1MPA(n) ((n) << 0)
|
||||
// };
|
||||
// enum mpcdn1_bit {
|
||||
#define MPABN1__N1MPD(n) (n << 8)
|
||||
#define MPABN1__N1MPC(n) (n << 0)
|
||||
#define MPABN1__N1MPD(n) ((n) << 8)
|
||||
#define MPABN1__N1MPC(n) ((n) << 0)
|
||||
// };
|
||||
// enum mpabn2_bit {
|
||||
#define MPABN2__N2MPB(n) (n << 8)
|
||||
#define MPABN2__N2MPA(n) (n << 0)
|
||||
#define MPABN2__N2MPB(n) ((n) << 8)
|
||||
#define MPABN2__N2MPA(n) ((n) << 0)
|
||||
// };
|
||||
// enum mpcdn2_bit {
|
||||
#define MPABN2__N2MPD(n) (n << 8)
|
||||
#define MPABN2__N2MPC(n) (n << 0)
|
||||
#define MPABN2__N2MPD(n) ((n) << 8)
|
||||
#define MPABN2__N2MPC(n) ((n) << 0)
|
||||
// };
|
||||
// enum mpabn3_bit {
|
||||
#define MPABN3__N3MPB(n) (n << 8)
|
||||
#define MPABN3__N3MPA(n) (n << 0)
|
||||
#define MPABN3__N3MPB(n) ((n) << 8)
|
||||
#define MPABN3__N3MPA(n) ((n) << 0)
|
||||
// };
|
||||
// enum mpcdn3_bit {
|
||||
#define MPABN3__N3MPD(n) (n << 8)
|
||||
#define MPABN3__N3MPC(n) (n << 0)
|
||||
#define MPABN3__N3MPD(n) ((n) << 8)
|
||||
#define MPABN3__N3MPC(n) ((n) << 0)
|
||||
// };
|
||||
// enum mpabra_bit {
|
||||
// };
|
||||
@ -622,20 +622,20 @@ enum bktau_bit {
|
||||
// enum sfccmd_bit {
|
||||
// };
|
||||
// enum prisa_bit {
|
||||
#define PRISA__S1PRIN(n) (n << 8)
|
||||
#define PRISA__S0PRIN(n) (n << 0)
|
||||
#define PRISA__S1PRIN(n) ((n) << 8)
|
||||
#define PRISA__S0PRIN(n) ((n) << 0)
|
||||
// };
|
||||
// enum prisb_bit {
|
||||
#define PRISA__S3PRIN(n) (n << 8)
|
||||
#define PRISA__S2PRIN(n) (n << 0)
|
||||
#define PRISA__S3PRIN(n) ((n) << 8)
|
||||
#define PRISA__S2PRIN(n) ((n) << 0)
|
||||
// };
|
||||
// enum prisc_bit {
|
||||
#define PRISA__S5PRIN(n) (n << 8)
|
||||
#define PRISA__S4PRIN(n) (n << 0)
|
||||
#define PRISA__S5PRIN(n) ((n) << 8)
|
||||
#define PRISA__S4PRIN(n) ((n) << 0)
|
||||
// };
|
||||
// enum prisd_bit {
|
||||
#define PRISA__S7PRIN(n) (n << 8)
|
||||
#define PRISA__S6PRIN(n) (n << 0)
|
||||
#define PRISA__S7PRIN(n) ((n) << 8)
|
||||
#define PRISA__S6PRIN(n) ((n) << 0)
|
||||
// };
|
||||
// enum prina_bit {
|
||||
// };
|
||||
@ -681,5 +681,8 @@ enum bktau_bit {
|
||||
// pattern name tables
|
||||
//
|
||||
|
||||
#define PATTERN_NAME_TABLE_2WORD__CHARACTER(n) (n << 0)
|
||||
#define PATTERN_NAME_TABLE_2WORD__PALETTE(n) (n << 16)
|
||||
#define PATTERN_NAME_TABLE_2WORD__CHARACTER(n) ((n) << 0)
|
||||
#define PATTERN_NAME_TABLE_2WORD__PALETTE(n) ((n) << 16)
|
||||
|
||||
#define PATTERN_NAME_TABLE_1WORD__PALETTE(n) (((n) & 0b1111) << 12)
|
||||
#define PATTERN_NAME_TABLE_1WORD__CHARACTER(n) (((n) & 0x3ff) << 0)
|
||||
|
||||
Loading…
x
Reference in New Issue
Block a user