view fcdev3b-hacks/src/romvecs-insert.S @ 516:1ed9de6c90bd

src/g23m-gsm/sms/sms_for.c: bogus malloc removed The new error handling code that was not present in TCS211 blob version contains a malloc call that is bogus for 3 reasons: 1) The memory allocation in question is not needed in the first place; 2) libc malloc is used instead of one of the firmware's proper ways; 3) The memory allocation is made inside a function and then never freed, i.e., a memory leak. This bug was caught in gcc-built FreeCalypso fw projects (Citrine and Selenite) because our gcc environment does not allow any use of libc malloc (any reference to malloc produces a link failure), but this code from TCS3.2 is wrong even for Magnetite: if this code path is executed repeatedly over a long time, the many small allocations made by this malloc call without a subsequent free will eventually exhaust the malloc heap provided by the TMS470 environment, malloc will start returning NULL, and the bogus code will treat it as an error. Because the memory allocation in question is not needed at all, the fix entails simply removing it.
author Mychaela Falconia <falcon@freecalypso.org>
date Sun, 22 Jul 2018 06:04:49 +0000
parents 8d9298e0823a
children
line wrap: on
line source

	.text
	.code	32
	.globl	_entry

_entry:	adr	r0, vectors
	ldmia	r0, {r1-r7}
	mov	r0, #0x800000
	stmia	r0, {r1-r7}
	ldr	pc, jumpaddr

vectors:
	.word	0x4000
	.word	0x4004
	.word	0x4008
	.word	0x400C
	.word	0x4010
	.word	0x4014
	.word	0x4018
jumpaddr:
	.word	0x4058