Move all SSL constants into PROGMEM, free 1.2KB (esp8266#6162)

earlephilhower · web-flow · commit 6bfb1bae40bf · 2019-06-06T13:05:22.000-07:00
Rewrite all the integer math operations with const input parameters to
use PROGMEM properly (pgm_read_xx or memcpy_P), and move all the EC
order and generators and SHA OIDs to PROGMEM.

This frees around 1.2KB of heap for any SSL applications.

Also delete unneeded objects from the bearssl.a library to shrink the
GIT repo size.
diff --git a/tools/sdk/include/bearssl/bearssl_git.h b/tools/sdk/include/bearssl/bearssl_git.h
@@ -1,2 +1,2 @@
 // Do not edit -- Automatically generated by tools/sdk/ssl/bearssl/Makefile
-#define BEARSSL_GIT 6b9587f
+#define BEARSSL_GIT 0d7d5e2
diff --git a/tools/sdk/lib/libbearssl.a b/tools/sdk/lib/libbearssl.a
diff --git a/tools/sdk/ssl/Makefile b/tools/sdk/ssl/Makefile
@@ -7,6 +7,7 @@ all T0 clean: bearssl/README.txt
 
 install: all version-header
 	cp bearssl/esp8266/libbearssl.a ../lib/.
+	ar d ../lib/libbearssl.a `ar t ../lib/libbearssl.a | egrep 'i31|i32|x86|sse|pwr8|i62|m31|m32|m62|m64|ct64|ctmul64'` # Remove unneeded objects
 	cp bearssl/inc/bearssl*.h ../include/bearssl/.
 
 bearssl/README.txt:
diff --git a/tools/sdk/ssl/bearssl b/tools/sdk/ssl/bearssl
@@ -1 +1 @@
-Subproject commit 6b9587f4ac63f0ec62a7c5884b1b70496713acb3
+Subproject commit 0d7d5e2e59c240703ac64e17177b044df5b3748a

Original file line number	Diff line number	Diff line change
`@@ -1,2 +1,2 @@`
`1`	`1`	`// Do not edit -- Automatically generated by tools/sdk/ssl/bearssl/Makefile`
`2`		`-#define BEARSSL_GIT 6b9587f`
	`2`	`+#define BEARSSL_GIT 0d7d5e2`