From ff46cceb89bb4aab7e510c2d3dc02855500617a0 Mon Sep 17 00:00:00 2001
From: mengqinggang <mengqinggang@loongson.cn>
Date: Fri, 14 Jun 2024 11:58:30 +0800
Subject: [PATCH 08/15] LoongArch: Fix _dl_tlsdesc_dynamic in LSX case

HWCAP value is overwritten at the first comparison of the LASX case.
The second comparison at LSX get incorrect result.
Change to use t0 to save HWCAP value, and use t1 to save comparison
result.
---
 sysdeps/loongarch/dl-tlsdesc.S | 18 +++++++++---------
 1 file changed, 9 insertions(+), 9 deletions(-)

diff --git a/sysdeps/loongarch/dl-tlsdesc.S b/sysdeps/loongarch/dl-tlsdesc.S
index 346b80f2..a6627cc7 100644
--- a/sysdeps/loongarch/dl-tlsdesc.S
+++ b/sysdeps/loongarch/dl-tlsdesc.S
@@ -81,7 +81,7 @@ _dl_tlsdesc_undefweak:
 	   _dl_tlsdesc_dynamic (struct tlsdesc *tdp)
 	   {
 	     struct tlsdesc_dynamic_arg *td = tdp->arg;
-	     dtv_t *dtv = *(dtv_t **)((char *)__thread_pointer - TCBHEAD_DTV);
+	     dtv_t *dtv = *(dtv_t **)((char *)__thread_pointer - SIZE_OF_TCB);
 	     if (__glibc_likely (td->gen_count <= dtv[0].counter
 		&& (dtv[td->tlsinfo.ti_module].pointer.val
 		    != TLS_DTV_UNALLOCATED),
@@ -177,8 +177,8 @@ Hign address	dynamic_block1 <----- dtv5  */
 	/* Whether support LASX.  */
 	la.global   t0, _rtld_global_ro
 	REG_L	t0, t0, GLRO_DL_HWCAP_OFFSET
-	andi	t0, t0, HWCAP_LOONGARCH_LASX
-	beqz	t0, .Llsx
+	andi	t1, t0, HWCAP_LOONGARCH_LASX
+	beqz	t1, .Llsx
 
 	/* Save 256-bit vector registers.
 	   FIXME: Without vector ABI, save all vector registers.  */
@@ -219,8 +219,8 @@ Hign address	dynamic_block1 <----- dtv5  */
 
 .Llsx:
 	/* Whether support LSX.  */
-	andi	t0, t0, HWCAP_LOONGARCH_LSX
-	beqz	t0, .Lfloat
+	andi	t1, t0, HWCAP_LOONGARCH_LSX
+	beqz	t1, .Lfloat
 
 	/* Save 128-bit vector registers.  */
 	ADDI	sp, sp, -FRAME_SIZE_LSX
@@ -296,8 +296,8 @@ Hign address	dynamic_block1 <----- dtv5  */
 
 	la.global   t0, _rtld_global_ro
 	REG_L	t0, t0, GLRO_DL_HWCAP_OFFSET
-	andi	t0, t0, HWCAP_LOONGARCH_LASX
-	beqz	t0, .Llsx1
+	andi	t1, t0, HWCAP_LOONGARCH_LASX
+	beqz	t1, .Llsx1
 
 	/* Restore 256-bit vector registers.  */
 	xvld	xr0, sp, 0*SZXREG
@@ -336,8 +336,8 @@ Hign address	dynamic_block1 <----- dtv5  */
 	b .Lfcsr
 
 .Llsx1:
-	andi	t0, s0, HWCAP_LOONGARCH_LSX
-	beqz	t0, .Lfloat1
+	andi	t1, t0, HWCAP_LOONGARCH_LSX
+	beqz	t1, .Lfloat1
 
 	/* Restore 128-bit vector registers.  */
 	vld	vr0, sp, 0*SZVREG
-- 
2.43.0