From: zyxsjl@126.com (zyxsjl)
To: linux-arm-kernel@lists.infradead.org
Subject: abt kernel 2.6 compressed/head.s
Date: Sun, 25 Oct 2009 14:49:48 +0800 (CST) [thread overview]
Message-ID: <7866344.98541256453388015.JavaMail.coremail@bj126app34.126.com> (raw)
hi anyone, I have not understood some code in this file below: #ifndef CONFIG_ZBOOT_ROM /* * If we're running fully PIC === CONFIG_ZBOOT_ROM = n, * we need to fix up pointers into the BSS region. * r2 - BSS start * r3 - BSS end * sp - stack pointer */ add r2, r2, r0 add r3, r3, r0 add sp, sp, r0 /* * Relocate all entries in the GOT table. */ 1: ldr r1, [r6, #0] @ relocate entries in the GOT add r1, r1, r0 @ table. This fixes up the str r1, [r6], #4 @ C references. cmp r6, ip blo 1b #else /* * Relocate entries in the GOT table. We only relocate * the entries that are outside the (relocated) BSS region. */ 1: ldr r1, [r6, #0] @ relocate entries in the GOT cmp r1, r2 @ entry
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next reply other threads:[~2009-10-25 6:49 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2009-10-25 6:49 zyxsjl [this message]
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2009-10-27 3:54 abt kernel 2.6 compressed/head.s zyxsjl
2009-10-27 18:06 ` Russell King - ARM Linux
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