uclibc-ng/libc/sysdeps/linux/bfin/__longjmp.S

/* longjmp for the Blackfin project
 *
 * Copyright (C) 2000-2006 Erik Andersen <andersen@uclibc.org>
 * Copyright (C) 2004 Metrowerks
 * Based on code from Analog Devices.
 *
 * Licensed under the LGPL v2.1, see the file COPYING.LIB in this tarball.
 */

.text
.global ___longjmp;
.type	___longjmp,STT_FUNC;
.align 4;

___longjmp:
	P0 = R0;
	R0 = [P0 + 0x00];
	[--SP] = R0;		// Put P0 on the stack

	P1 = [P0 + 0x04];
	P2 = [P0 + 0x08];
	P3 = [P0 + 0x0C];
	P4 = [P0 + 0x10];
	P5 = [P0 + 0x14];

	FP = [P0 + 0x18];
	R0 = [SP++];		// Grab P0 from old stack
	SP = [P0 + 0x1C];	// Update Stack Pointer
	[--SP] = R0;		// Put P0 on new stack
	[--SP] = R1;		// Put VAL arg on new stack

	R0 = [P0 + 0x20];	// Data Registers
	R1 = [P0 + 0x24];
	R2 = [P0 + 0x28];
	R3 = [P0 + 0x2C];
	R4 = [P0 + 0x30];
	R5 = [P0 + 0x34];
	R6 = [P0 + 0x38];
	R7 = [P0 + 0x3C];

	R0 = [P0 + 0x40];
	ASTAT = R0;

	R0 = [P0 + 0x44];	// Loop Counters
	LC0 = R0;
	R0 = [P0 + 0x48];
	LC1 = R0;

	R0 = [P0 + 0x4C];	// Accumulators
	A0.W = R0;
	R0 = [P0 + 0x50];
	A0.X = R0;
	R0 = [P0 + 0x54];
	A1.W = R0;
	R0 = [P0 + 0x58];
	A1.X = R0;

	R0 = [P0 + 0x5C];	// Index Registers
	I0 = R0;
	R0 = [P0 + 0x60];
	I1 = R0;
	R0 = [P0 + 0x64];
	I2 = R0;
	R0 = [P0 + 0x68];
	I3 = R0;

	R0 = [P0 + 0x6C];	// Modifier Registers
	M0 = R0;
	R0 = [P0 + 0x70];
	M1 = R0;
	R0 = [P0 + 0x74];
	M2 = R0;
	R0 = [P0 + 0x78];
	M3 = R0;

	R0 = [P0 + 0x7C];	// Length Registers
	L0 = R0;
	R0 = [P0 + 0x80];
	L1 = R0;
	R0 = [P0 + 0x84];
	L2 = R0;
	R0 = [P0 + 0x88];
	L3 = R0;

	R0 = [P0 + 0x8C];	// Base Registers
	B0 = R0;
	R0 = [P0 + 0x90];
	B1 = R0;
	R0 = [P0 + 0x94];
	B2 = R0;
	R0 = [P0 + 0x98];
	B3 = R0;

	R0 = [P0 + 0x9C];	// Return Address (PC)
	RETS = R0;

	R0 = [SP++];
	P0 = [SP++];

	CC = R0 == 0;
	IF !CC JUMP .Lfinished;
	R0 = 1;
.Lfinished:
	RTS;
.size ___longjmp,.-___longjmp

libc_hidden_def(__longjmp)