Merge #108

108: remove build dependency on arm-none-eabi-gcc r=adamgreig a=japaric

by shipping pre-assembled object files. This is the same approach as the
one used in #95

r? @rust-embedded/cortex-m (anyone)

Co-authored-by: Jorge Aparicio <jorge@japaric.io>

.gitignore

@@ -2,4 +2,7 @@
 *.rs.bk
 .#*
 Cargo.lock
+bin/*.after
+bin/*.before
+bin/*.o
 target

.travis.yml

@@ -3,76 +3,46 @@ language: rust
 matrix:
   include:
     - env: TARGET=x86_64-unknown-linux-gnu
+      rust: stable
       if: (branch = staging OR branch = trying) OR (type = pull_request AND branch = master)
 
     - env: TARGET=thumbv6m-none-eabi
-      rust: beta
-      addons:
-        apt:
-          packages:
-            - gcc-arm-none-eabi
+      rust: stable
       if: (branch = staging OR branch = trying) OR (type = pull_request AND branch = master)
 
     - env: TARGET=thumbv7m-none-eabi
-      rust: beta
-      addons:
-        apt:
-          packages:
-            - gcc-arm-none-eabi
+      rust: stable
       if: (branch = staging OR branch = trying) OR (type = pull_request AND branch = master)
 
     - env: TARGET=thumbv7em-none-eabi
-      rust: beta
-      addons:
-        apt:
-          packages:
-            - gcc-arm-none-eabi
+      rust: stable
       if: (branch = staging OR branch = trying) OR (type = pull_request AND branch = master)
 
     - env: TARGET=thumbv7em-none-eabihf
-      rust: beta
-      addons:
-        apt:
-          packages:
-            - gcc-arm-none-eabi
+      rust: stable
       if: (branch = staging OR branch = trying) OR (type = pull_request AND branch = master)
 
     - env: TARGET=thumbv6m-none-eabi
       rust: nightly
-      addons:
-        apt:
-          packages:
-            - gcc-arm-none-eabi
       if: (branch = staging OR branch = trying) OR (type = pull_request AND branch = master)
 
     - env: TARGET=thumbv7m-none-eabi
       rust: nightly
-      addons:
-        apt:
-          packages:
-            - gcc-arm-none-eabi
       if: (branch = staging OR branch = trying) OR (type = pull_request AND branch = master)
 
     - env: TARGET=thumbv7em-none-eabi
       rust: nightly
-      addons:
-        apt:
-          packages:
-            - gcc-arm-none-eabi
       if: (branch = staging OR branch = trying) OR (type = pull_request AND branch = master)
 
     - env: TARGET=thumbv7em-none-eabihf
       rust: nightly
-      addons:
-        apt:
-          packages:
-            - gcc-arm-none-eabi
       if: (branch = staging OR branch = trying) OR (type = pull_request AND branch = master)
 
 before_install: set -e
 
 install:
   - bash ci/install.sh
+  - export PATH="$PATH:$PWD/gcc/bin"
 
 script:
   - bash ci/script.sh
@@ -86,6 +56,7 @@ before_cache:
 
 branches:
   only:
+    - master
     - staging
     - trying
 

Cargo.toml

@@ -9,9 +9,6 @@ name = "cortex-m"
 repository = "https://github.com/japaric/cortex-m"
 version = "0.5.4"
 
-[build-dependencies]
-cc = "1.0.10"
-
 [dependencies]
 aligned = "0.2.0"
 bare-metal = "0.2.0"

asm-cm7-r0p1.s

@@ -0,0 +1,27 @@
+  .section .text.__basepri_max_cm7_r0p1
+  .global __basepri_max_cm7_r0p1
+  .syntax unified
+  .thumb_func
+__basepri_max_cm7_r0p1:
+  mrs r1, PRIMASK
+  cpsid i
+  tst.w r1, #1
+  msr BASEPRI_MAX, r0
+  it ne
+  bxne lr
+  cpsie i
+  bx lr
+
+  .section .text.__basepri_w_cm7_r0p1
+  .global __basepri_w_cm7_r0p1
+  .syntax unified
+  .thumb_func
+__basepri_w_cm7_r0p1:
+  mrs r1, PRIMASK
+  cpsid i
+  tst.w r1, #1
+  msr BASEPRI, r0
+  it ne
+  bxne lr
+  cpsie i
+  bx lr

asm-v7.s

@@ -0,0 +1,27 @@
+  .section .text.__basepri_max
+  .global __basepri_max
+  .thumb_func
+__basepri_max:
+  msr BASEPRI_MAX, r0
+  bx lr
+
+  .section .text.__basepri_r
+  .global __basepri_r
+  .thumb_func
+__basepri_r:
+  mrs r0, BASEPRI
+  bx lr
+
+  .section .text.__basepri_w
+  .global __basepri_w
+  .thumb_func
+__basepri_w:
+  msr BASEPRI, r0
+  bx lr
+
+  .section .text.__faultmask
+  .global __faultmask
+  .thumb_func
+__faultmask:
+  mrs r0, FAULTMASK
+  bx lr

asm.s

@@ -0,0 +1,120 @@
+  .section .text.__bkpt
+  .global __bkpt
+  .thumb_func
+__bkpt:
+  bkpt
+  bx lr
+
+  .section .text.__control
+  .global __control
+  .thumb_func
+__control:
+  mrs r0, CONTROL
+  bx lr
+
+  .section .text.__cpsid
+  .global __cpsid
+  .thumb_func
+__cpsid:
+  cpsid i
+  bx lr
+
+  .section .text.__cpsie
+  .global __cpsie
+  .thumb_func
+__cpsie:
+  cpsie i
+  bx lr
+
+  .section .text.__delay
+  .global __delay
+  .syntax unified
+  .thumb_func
+__delay:
+  nop
+  subs r0, #1
+  bne __delay
+  bx lr
+
+  .section .text.__dmb
+  .global __dmb
+  .thumb_func
+__dmb:
+  dmb 0xF
+  bx lr
+
+  .section .text.__dsb
+  .global __dsb
+  .thumb_func
+__dsb:
+  dsb 0xF
+  bx lr
+
+  .section .text.__isb
+  .global __isb
+  .thumb_func
+__isb:
+  isb 0xF
+  bx lr
+
+  .section .text.__msp_r
+  .global __msp_r
+  .thumb_func
+__msp_r:
+  mrs r0, MSP
+  bx lr
+
+  .section .text.__msp_w
+  .global __msp_w
+  .thumb_func
+__msp_w:
+  msr MSP, r0
+  bx lr
+
+  .section .text.__nop
+  .global __nop
+  .thumb_func
+__nop:
+  bx lr
+
+  .section .text.__primask
+  .global __primask
+  .thumb_func
+__primask:
+  mrs r0, PRIMASK
+  bx lr
+
+  .section .text.__psp_r
+  .global __psp_r
+  .thumb_func
+__psp_r:
+  mrs r0, PSP
+  bx lr
+
+  .section .text.__psp_w
+  .global __psp_w
+  .thumb_func
+__psp_w:
+  msr PSP, r0
+  bx lr
+
+  .section .text.__sev
+  .global __sev
+  .thumb_func
+__sev:
+  sev
+  bx lr
+
+  .section .text.__wfe
+  .global __wfe
+  .thumb_func
+__wfe:
+  wfe
+  bx lr
+
+  .section .text.__wfi
+  .global __wfi
+  .thumb_func
+__wfi:
+  wfi
+  bx lr