ARM: use plain labels for pc-relative addressing

Originally committed as revision 20152 to svn://svn.ffmpeg.org/ffmpeg/trunk

libavcodec/arm/jrevdct_arm.S

@@ -65,7 +65,7 @@ function j_rev_dct_ARM, export=1
 
         mov lr, r0                      @ lr = pointer to the current row
         mov r12, #8                     @ r12 = row-counter
-        add r11, pc, #(const_array-.-8) @ r11 = base pointer to the constants array
+        adr r11, const_array            @ r11 = base pointer to the constants array
 row_loop:
         ldrsh r0, [lr, # 0]             @ r0 = 'd0'
         ldrsh r2, [lr, # 2]             @ r2 = 'd2'

libavcodec/arm/simple_idct_arm.S

@@ -66,7 +66,7 @@ function simple_idct_ARM, export=1
         stmfd sp!, {r4-r11, r14} @ R14 is also called LR
         @@ at this point, R0=block, other registers are free.
         add r14, r0, #112        @ R14=&block[8*7], better start from the last row, and decrease the value until row=0, i.e. R12=block.
-        add r12, pc, #(__constant_ptr__-.-8) @ R12=__constant_ptr__, the vector containing the constants, probably not necessary to reserve a register for it
+        adr r12, __constant_ptr__ @ R12=__constant_ptr__, the vector containing the constants, probably not necessary to reserve a register for it
         @@ add 2 temporary variables in the stack: R0 and R14
         sub sp, sp, #8          @ allow 2 local variables
         str r0, [sp, #0]        @ save block in sp[0]

libavcodec/arm/simple_idct_armv5te.S

@@ -57,7 +57,7 @@ function idct_row_armv5te
         mov    ip, #16384
         sub    ip, ip, #1            /* ip = W4 */
         smlabb v1, ip, a3, v1        /* v1 = W4*row[0]+(1<<(RS-1)) */
-        ldr    ip, [pc, #(w26-.-8)]  /* ip = W2 | (W6 << 16) */
+        ldr    ip, w26               /* ip = W2 | (W6 << 16) */
         smultb a2, ip, a4
         smulbb lr, ip, a4
         add    v2, v1, a2
@@ -65,8 +65,8 @@ function idct_row_armv5te
         sub    v4, v1, lr
         add    v1, v1, lr
 
-        ldr    ip, [pc, #(w13-.-8)]  /* ip = W1 | (W3 << 16) */
-        ldr    lr, [pc, #(w57-.-8)]  /* lr = W5 | (W7 << 16) */
+        ldr    ip, w13               /* ip = W1 | (W3 << 16) */
+        ldr    lr, w57               /* lr = W5 | (W7 << 16) */
         smulbt v5, ip, a3
         smultt v6, lr, a4
         smlatt v5, ip, a4, v5
@@ -93,7 +93,7 @@ function idct_row_armv5te
         smlatt v7, ip, a4, v7
         sub    fp, fp, a2
 
-        ldr    ip, [pc, #(w26-.-8)]  /* ip = W2 | (W6 << 16) */
+        ldr    ip, w26               /* ip = W2 | (W6 << 16) */
         mov    a2, #16384
         sub    a2, a2, #1            /* a2 =  W4 */
         smulbb a2, a2, a3            /* a2 =  W4*row[4] */
@@ -177,7 +177,7 @@ row_dc_only:
         sub    v4, v2, a3
         sub    v6, v2, a3
         add    fp, v2, a3
-        ldr    ip, [pc, #(w26-.-8)]
+        ldr    ip, w26
         ldr    a4, [a1, #(16*2)]
         add    v2, v2, a3
 
@@ -210,9 +210,9 @@ row_dc_only:
 
         stmfd  sp!, {v1, v2, v3, v4, v5, v6, v7, fp}
 
-        ldr    ip, [pc, #(w13-.-8)]
+        ldr    ip, w13
         ldr    a4, [a1, #(16*1)]
-        ldr    lr, [pc, #(w57-.-8)]
+        ldr    lr, w57
         smulbb v1, ip, a4
         smultb v3, ip, a4
         smulbb v5, lr, a4