FreeCalypso > hg > freecalypso-tools
view target-utils/lunadrv/main.c @ 965:2969032bdfac
fcup-smsend[mult]: fix buglet in K&R C NULL pointer passing
The only 100% safe way to pass a NULL pointer as a function argument
in K&R C is to cast 0 to a pointer type; failing to do so may cause
mysterious bugs (invalid stack frames or garbage in argument registers)
on 64-bit machines. This issue has already been fixed in most of
FC host tools, but I just found some missed spots: passing of NULL UDH
to PDU encoding functions in fcup-smsend[mult] in the case of single
(not concatenated) SMS.
author | Mychaela Falconia <falcon@freecalypso.org> |
---|---|
date | Fri, 01 Sep 2023 07:33:51 +0000 |
parents | db9a8e88e63f |
children |
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#include "types.h" main() { uart_select_init(); printf("Luna LCD driver utility running\n"); print_boot_rom_info(); /* Calypso MEMIF setup */ *(volatile u16 *)0xfffffb00 = 0x00A4; *(volatile u16 *)0xfffffb02 = 0x00A4; *(volatile u16 *)0xfffffb04 = 0x00A4; *(volatile u16 *)0xfffffb06 = 0x02A5; *(volatile u16 *)0xfffef006 = 0x0008; /* GPIO setup for backlight control */ *(volatile u16 *)0xfffef00a = 0x01E0; *(volatile u16 *)0xfffe4802 = 0x0200; *(volatile u16 *)0xfffe4804 = 0xFDFF; for (;;) { putchar('='); if (command_entry()) command_dispatch(); } }