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polishing the Notes.md
This commit is contained in:
Per
parent
5cb95979c5
commit
31af041cce
2 changed files with 156 additions and 186 deletions
39
Notes.md
39
Notes.md
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@ -148,28 +148,25 @@ Overall, using this approach, we don't need a trampoline (`run`). We reduce the
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The `examples/lockopt.rs` shows that locks are effectively optimized out.
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The `examples/lockopt.rs` shows that locks are effectively optimized out.
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``` asm
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``` asm
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00000132 <GPIOB>:
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00000128 <GPIOB>:
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132: b510 push {r4, lr}
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128: 21a0 movs r1, #160 ; 0xa0
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134: f000 f893 bl 25e <__basepri_r>
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12a: f3ef 8011 mrs r0, BASEPRI
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138: 4604 mov r4, r0
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12e: f381 8811 msr BASEPRI, r1
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13a: 20a0 movs r0, #160 ; 0xa0
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132: f240 0100 movw r1, #0
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13c: f000 f892 bl 264 <__basepri_w>
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136: f2c2 0100 movt r1, #8192 ; 0x2000
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140: f240 0000 movw r0, #0
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13a: 680a ldr r2, [r1, #0]
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144: f2c2 0000 movt r0, #8192 ; 0x2000
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13c: 3201 adds r2, #1
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148: 6801 ldr r1, [r0, #0]
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13e: 600a str r2, [r1, #0]
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14a: 3101 adds r1, #1
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140: f380 8811 msr BASEPRI, r0
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14c: 6001 str r1, [r0, #0]
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144: 4770 bx lr
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14e: 4620 mov r0, r4
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150: e8bd 4010 ldmia.w sp!, {r4, lr}
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154: f000 b886 b.w 264 <__basepri_w>
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00000158 <GPIOC>:
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00000146 <GPIOC>:
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158: f240 0000 movw r0, #0
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146: f240 0000 movw r0, #0
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15c: f2c2 0000 movt r0, #8192 ; 0x2000
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14a: f2c2 0000 movt r0, #8192 ; 0x2000
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160: 6801 ldr r1, [r0, #0]
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14e: 6801 ldr r1, [r0, #0]
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162: 3102 adds r1, #2
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150: 3102 adds r1, #2
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164: 6001 str r1, [r0, #0]
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152: 6001 str r1, [r0, #0]
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166: 4770 bx lr
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154: 4770 bx lr
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```
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```
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GPIOB/C are sharing a resource (C higher prio). Notice, there is no BASEPRI manipulation at all.
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GPIOB/C are sharing a resource (C higher prio). Notice, there is no BASEPRI manipulation at all.
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303
lockopt.asm
303
lockopt.asm
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@ -5,188 +5,161 @@ target/thumbv7m-none-eabi/release/examples/lockopt: file format elf32-little
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Disassembly of section .text:
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Disassembly of section .text:
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000000f0 <GPIOA>:
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000000f0 <GPIOA>:
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f0: b510 push {r4, lr}
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f0: 21a0 movs r1, #160 ; 0xa0
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f2: f000 f8b4 bl 25e <__basepri_r>
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f2: f3ef 8011 mrs r0, BASEPRI
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f6: 4604 mov r4, r0
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f6: f381 8811 msr BASEPRI, r1
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f8: 20a0 movs r0, #160 ; 0xa0
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fa: f240 0100 movw r1, #0
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fa: f000 f8b3 bl 264 <__basepri_w>
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fe: f2c2 0100 movt r1, #8192 ; 0x2000
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fe: f240 0000 movw r0, #0
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102: 680a ldr r2, [r1, #0]
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102: f2c2 0000 movt r0, #8192 ; 0x2000
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104: 3201 adds r2, #1
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106: 6801 ldr r1, [r0, #0]
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106: 600a str r2, [r1, #0]
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108: 3101 adds r1, #1
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108: f24e 2100 movw r1, #57856 ; 0xe200
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10a: 6001 str r1, [r0, #0]
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10c: 2202 movs r2, #2
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10c: f24e 2000 movw r0, #57856 ; 0xe200
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10e: f2ce 0100 movt r1, #57344 ; 0xe000
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110: 2102 movs r1, #2
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112: 600a str r2, [r1, #0]
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112: f2ce 0000 movt r0, #57344 ; 0xe000
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114: 2204 movs r2, #4
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116: 6001 str r1, [r0, #0]
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116: 600a str r2, [r1, #0]
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118: 2104 movs r1, #4
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118: 2126 movs r1, #38 ; 0x26
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11a: 6001 str r1, [r0, #0]
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11a: f380 8811 msr BASEPRI, r0
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11c: 4620 mov r0, r4
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11e: f2c0 0102 movt r1, #2
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11e: f000 f8a1 bl 264 <__basepri_w>
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122: 2018 movs r0, #24
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122: 2126 movs r1, #38 ; 0x26
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124: f000 b887 b.w 236 <__syscall>
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124: 2018 movs r0, #24
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126: f2c0 0102 movt r1, #2
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12a: e8bd 4010 ldmia.w sp!, {r4, lr}
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12e: f000 b88e b.w 24e <__syscall>
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00000132 <GPIOB>:
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00000128 <GPIOB>:
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132: b510 push {r4, lr}
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128: 21a0 movs r1, #160 ; 0xa0
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134: f000 f893 bl 25e <__basepri_r>
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12a: f3ef 8011 mrs r0, BASEPRI
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138: 4604 mov r4, r0
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12e: f381 8811 msr BASEPRI, r1
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13a: 20a0 movs r0, #160 ; 0xa0
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132: f240 0100 movw r1, #0
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13c: f000 f892 bl 264 <__basepri_w>
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136: f2c2 0100 movt r1, #8192 ; 0x2000
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140: f240 0000 movw r0, #0
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13a: 680a ldr r2, [r1, #0]
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144: f2c2 0000 movt r0, #8192 ; 0x2000
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13c: 3201 adds r2, #1
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148: 6801 ldr r1, [r0, #0]
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13e: 600a str r2, [r1, #0]
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14a: 3101 adds r1, #1
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140: f380 8811 msr BASEPRI, r0
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14c: 6001 str r1, [r0, #0]
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144: 4770 bx lr
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14e: 4620 mov r0, r4
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150: e8bd 4010 ldmia.w sp!, {r4, lr}
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154: f000 b886 b.w 264 <__basepri_w>
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00000158 <GPIOC>:
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00000146 <GPIOC>:
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158: f240 0000 movw r0, #0
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146: f240 0000 movw r0, #0
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15c: f2c2 0000 movt r0, #8192 ; 0x2000
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14a: f2c2 0000 movt r0, #8192 ; 0x2000
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160: 6801 ldr r1, [r0, #0]
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14e: 6801 ldr r1, [r0, #0]
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162: 3102 adds r1, #2
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150: 3102 adds r1, #2
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164: 6001 str r1, [r0, #0]
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152: 6001 str r1, [r0, #0]
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166: 4770 bx lr
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154: 4770 bx lr
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00000168 <main>:
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00000156 <main>:
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168: f000 f873 bl 252 <__cpsid>
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156: f24e 1000 movw r0, #57600 ; 0xe100
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16c: f24e 1000 movw r0, #57600 ; 0xe100
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15a: f24e 4201 movw r2, #58369 ; 0xe401
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170: f24e 4201 movw r2, #58369 ; 0xe401
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15e: f2ce 0000 movt r0, #57344 ; 0xe000
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174: f2ce 0000 movt r0, #57344 ; 0xe000
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162: 21e0 movs r1, #224 ; 0xe0
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178: 21e0 movs r1, #224 ; 0xe0
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164: b672 cpsid i
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17a: f880 1300 strb.w r1, [r0, #768] ; 0x300
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166: f880 1300 strb.w r1, [r0, #768] ; 0x300
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17e: 2101 movs r1, #1
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16a: 2101 movs r1, #1
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180: f2ce 0200 movt r2, #57344 ; 0xe000
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16c: f2ce 0200 movt r2, #57344 ; 0xe000
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184: 23c0 movs r3, #192 ; 0xc0
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170: 23c0 movs r3, #192 ; 0xc0
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186: 6001 str r1, [r0, #0]
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172: 6001 str r1, [r0, #0]
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188: 7013 strb r3, [r2, #0]
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174: 7013 strb r3, [r2, #0]
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18a: 2302 movs r3, #2
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176: 2302 movs r3, #2
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18c: 6003 str r3, [r0, #0]
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178: 6003 str r3, [r0, #0]
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18e: 23a0 movs r3, #160 ; 0xa0
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17a: 23a0 movs r3, #160 ; 0xa0
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190: 7053 strb r3, [r2, #1]
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17c: 7053 strb r3, [r2, #1]
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192: 2204 movs r2, #4
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17e: 2204 movs r2, #4
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194: 6002 str r2, [r0, #0]
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180: 6002 str r2, [r0, #0]
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196: f64e 5210 movw r2, #60688 ; 0xed10
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182: f64e 5210 movw r2, #60688 ; 0xed10
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19a: f2ce 0200 movt r2, #57344 ; 0xe000
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186: f2ce 0200 movt r2, #57344 ; 0xe000
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19e: 6813 ldr r3, [r2, #0]
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18a: 6813 ldr r3, [r2, #0]
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1a0: f043 0302 orr.w r3, r3, #2
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18c: f043 0302 orr.w r3, r3, #2
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1a4: 6013 str r3, [r2, #0]
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190: 6013 str r3, [r2, #0]
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1a6: f8c0 1100 str.w r1, [r0, #256] ; 0x100
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192: f8c0 1100 str.w r1, [r0, #256] ; 0x100
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1aa: f000 f854 bl 256 <__cpsie>
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196: b662 cpsie i
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1ae: f000 f854 bl 25a <__wfi>
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198: bf30 wfi
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1b2: e7fc b.n 1ae <main+0x46>
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19a: e7fd b.n 198 <main+0x42>
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000001b4 <Reset>:
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0000019c <Reset>:
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1b4: f000 f84a bl 24c <DefaultPreInit>
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19c: f000 f84a bl 234 <DefaultPreInit>
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1b8: f240 0004 movw r0, #4
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1a0: f240 0004 movw r0, #4
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1bc: f240 0100 movw r1, #0
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1a4: f240 0100 movw r1, #0
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1c0: f2c2 0000 movt r0, #8192 ; 0x2000
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1a8: f2c2 0000 movt r0, #8192 ; 0x2000
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1c4: f2c2 0100 movt r1, #8192 ; 0x2000
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1ac: f2c2 0100 movt r1, #8192 ; 0x2000
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1c8: 4281 cmp r1, r0
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1b0: 4281 cmp r1, r0
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1ca: d214 bcs.n 1f6 <Reset+0x42>
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1b2: d214 bcs.n 1de <Reset+0x42>
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1cc: f240 0100 movw r1, #0
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1b4: f240 0100 movw r1, #0
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1d0: 2200 movs r2, #0
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1b8: 2200 movs r2, #0
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1d2: f2c2 0100 movt r1, #8192 ; 0x2000
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1ba: f2c2 0100 movt r1, #8192 ; 0x2000
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1be: f841 2b04 str.w r2, [r1], #4
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1c2: 4281 cmp r1, r0
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1c4: bf3c itt cc
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1c6: f841 2b04 strcc.w r2, [r1], #4
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1ca: 4281 cmpcc r1, r0
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1cc: d207 bcs.n 1de <Reset+0x42>
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1ce: f841 2b04 str.w r2, [r1], #4
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1d2: 4281 cmp r1, r0
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1d4: d203 bcs.n 1de <Reset+0x42>
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1d6: f841 2b04 str.w r2, [r1], #4
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1d6: f841 2b04 str.w r2, [r1], #4
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1da: 4281 cmp r1, r0
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1da: 4281 cmp r1, r0
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1dc: bf3c itt cc
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1dc: d3ef bcc.n 1be <Reset+0x22>
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1de: f841 2b04 strcc.w r2, [r1], #4
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1de: f240 0000 movw r0, #0
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1e2: 4281 cmpcc r1, r0
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1e2: f240 0100 movw r1, #0
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1e4: d207 bcs.n 1f6 <Reset+0x42>
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1e6: f2c2 0000 movt r0, #8192 ; 0x2000
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1e6: f841 2b04 str.w r2, [r1], #4
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1ea: f2c2 0100 movt r1, #8192 ; 0x2000
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1ea: 4281 cmp r1, r0
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1ee: 4281 cmp r1, r0
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1ec: d203 bcs.n 1f6 <Reset+0x42>
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1f0: d21c bcs.n 22c <Reset+0x90>
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1ee: f841 2b04 str.w r2, [r1], #4
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1f2: f240 2150 movw r1, #592 ; 0x250
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1f2: 4281 cmp r1, r0
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1f6: f240 0200 movw r2, #0
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1f4: d3ef bcc.n 1d6 <Reset+0x22>
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1fa: f2c0 0100 movt r1, #0
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1f6: f240 0000 movw r0, #0
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1fe: f2c2 0200 movt r2, #8192 ; 0x2000
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1fa: f240 0100 movw r1, #0
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202: 680b ldr r3, [r1, #0]
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1fe: f2c2 0000 movt r0, #8192 ; 0x2000
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204: f842 3b04 str.w r3, [r2], #4
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202: f2c2 0100 movt r1, #8192 ; 0x2000
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208: 4282 cmp r2, r0
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206: 4281 cmp r1, r0
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20a: d20f bcs.n 22c <Reset+0x90>
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208: d21c bcs.n 244 <Reset+0x90>
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20c: 684b ldr r3, [r1, #4]
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20a: f240 2180 movw r1, #640 ; 0x280
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20e: f842 3b04 str.w r3, [r2], #4
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20e: f240 0200 movw r2, #0
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212: 4282 cmp r2, r0
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212: f2c0 0100 movt r1, #0
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214: bf3e ittt cc
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216: f2c2 0200 movt r2, #8192 ; 0x2000
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216: 688b ldrcc r3, [r1, #8]
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21a: 680b ldr r3, [r1, #0]
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218: f842 3b04 strcc.w r3, [r2], #4
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21c: f842 3b04 str.w r3, [r2], #4
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21c: 4282 cmpcc r2, r0
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220: 4282 cmp r2, r0
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21e: d205 bcs.n 22c <Reset+0x90>
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222: d20f bcs.n 244 <Reset+0x90>
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220: 68cb ldr r3, [r1, #12]
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224: 684b ldr r3, [r1, #4]
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222: 3110 adds r1, #16
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226: f842 3b04 str.w r3, [r2], #4
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224: f842 3b04 str.w r3, [r2], #4
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22a: 4282 cmp r2, r0
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228: 4282 cmp r2, r0
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22c: bf3e ittt cc
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22a: d3ea bcc.n 202 <Reset+0x66>
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22e: 688b ldrcc r3, [r1, #8]
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22c: f7ff ff93 bl 156 <main>
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230: f842 3b04 strcc.w r3, [r2], #4
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230: defe udf #254 ; 0xfe
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234: 4282 cmpcc r2, r0
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236: d205 bcs.n 244 <Reset+0x90>
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238: 68cb ldr r3, [r1, #12]
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23a: 3110 adds r1, #16
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23c: f842 3b04 str.w r3, [r2], #4
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240: 4282 cmp r2, r0
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242: d3ea bcc.n 21a <Reset+0x66>
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244: f7ff ff90 bl 168 <main>
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248: defe udf #254 ; 0xfe
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0000024a <DefaultHandler_>:
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00000232 <DefaultHandler_>:
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24a: Address 0x000000000000024a is out of bounds.
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232: Address 0x0000000000000232 is out of bounds.
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0000024b <ADC0_SEQUENCE_0>:
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00000233 <ADC0_SEQUENCE_0>:
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24b: Address 0x000000000000024b is out of bounds.
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233: Address 0x0000000000000233 is out of bounds.
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0000024c <DefaultPreInit>:
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00000234 <DefaultPreInit>:
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24c: Address 0x000000000000024c is out of bounds.
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234: Address 0x0000000000000234 is out of bounds.
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0000024d <__pre_init>:
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00000235 <__pre_init>:
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24d: Address 0x000000000000024d is out of bounds.
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235: Address 0x0000000000000235 is out of bounds.
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0000024e <__syscall>:
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00000236 <__syscall>:
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24e: beab bkpt 0x00ab
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236: beab bkpt 0x00ab
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250: 4770 bx lr
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238: 4770 bx lr
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00000252 <__cpsid>:
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0000023a <HardFaultTrampoline>:
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252: b672 cpsid i
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23a: 4670 mov r0, lr
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254: 4770 bx lr
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23c: 2104 movs r1, #4
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23e: 4208 tst r0, r1
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240: d102 bne.n 248 <HardFaultTrampoline+0xe>
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242: f3ef 8008 mrs r0, MSP
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246: e002 b.n 24e <HardFault_>
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248: f3ef 8009 mrs r0, PSP
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24c: e7ff b.n 24e <HardFault_>
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00000256 <__cpsie>:
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0000024e <HardFault_>:
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256: b662 cpsie i
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24e: Address 0x000000000000024e is out of bounds.
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258: 4770 bx lr
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0000025a <__wfi>:
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25a: bf30 wfi
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25c: 4770 bx lr
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0000025e <__basepri_r>:
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25e: f3ef 8011 mrs r0, BASEPRI
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262: 4770 bx lr
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00000264 <__basepri_w>:
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264: f380 8811 msr BASEPRI, r0
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268: 4770 bx lr
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|
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0000026a <HardFaultTrampoline>:
|
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26a: 4670 mov r0, lr
|
|
||||||
26c: 2104 movs r1, #4
|
|
||||||
26e: 4208 tst r0, r1
|
|
||||||
270: d102 bne.n 278 <HardFaultTrampoline+0xe>
|
|
||||||
272: f3ef 8008 mrs r0, MSP
|
|
||||||
276: e002 b.n 27e <HardFault_>
|
|
||||||
278: f3ef 8009 mrs r0, PSP
|
|
||||||
27c: e7ff b.n 27e <HardFault_>
|
|
||||||
|
|
||||||
0000027e <HardFault_>:
|
|
||||||
27e: Address 0x000000000000027e is out of bounds.
|
|
||||||
|
|
||||||
|
|
||||||
0000027f <HardFault>:
|
0000024f <HardFault>:
|
||||||
27f: Address 0x000000000000027f is out of bounds.
|
24f: Address 0x000000000000024f is out of bounds.
|
||||||
|
|
||||||
|
|
|
||||||
Loading…
Reference in a new issue