FreeCalypso > hg > fc-selenite

comparison src/cs/drivers/drv_app/ffs/board/amdsbdrv.c @ 46:559a8b3ef10b

Find changesets by keywords (author, files, the commit message), revision number or hash, or revset expression.
FFS code: first attempt at non-invasive gcc support
author Mychaela Falconia <falcon@freecalypso.org>
date Thu, 19 Jul 2018 00:35:33 +0000
parents b6a5e36de839
children 4484ab3f6ab3
comparison
equal deleted inserted replaced
45:e955d102e7c4 46:559a8b3ef10b
11 #include "ffs.cfg" 11 #include "ffs.cfg"
12 12
13 #include "ffs/ffs.h" 13 #include "ffs/ffs.h"
14 #include "ffs/board/drv.h" 14 #include "ffs/board/drv.h"
15 #include "ffs/board/ffstrace.h" 15 #include "ffs/board/ffstrace.h"
16 #include "nucleus.h"
16 17
17 18
18 // Due to long branches, we disable all tracing and led function calls. 19 // Due to long branches, we disable all tracing and led function calls.
19 #undef tlw 20 #undef tlw
20 #define tlw(contents) 21 #define tlw(contents)
21 #undef ttw 22 #undef ttw
22 #define ttw(contents) 23 #define ttw(contents)
23 24
24 25
26 #ifdef __GNUC__
27 asm(".globl ffsdrv_ram_amd_begin");
28 asm("ffsdrv_ram_amd_begin:");
29 #else
25 asm(" .label _ffsdrv_ram_amd_begin"); 30 asm(" .label _ffsdrv_ram_amd_begin");
26 asm(" .def _ffsdrv_ram_amd_begin"); 31 asm(" .def _ffsdrv_ram_amd_begin");
32 #endif
27 33
28 34
29 // IMPORTANT! Apparently, placing the int_disable/enable() function code 35 // IMPORTANT! Apparently, placing the int_disable/enable() function code
30 // here instead of at the bottom of the file, makes the code crash or 36 // here instead of at the bottom of the file, makes the code crash or
31 // freeze. Reason is as of yet unknown. 37 // freeze. Reason is as of yet unknown.
136 * Interrupt Enable/Disable 142 * Interrupt Enable/Disable
137 ******************************************************************************/ 143 ******************************************************************************/
138 144
139 uint32 amd_int_disable(void) 145 uint32 amd_int_disable(void)
140 { 146 {
147 #ifdef __GNUC__
148 return NU_Control_Interrupts(0xC0);
149 #else
141 asm(" .state16"); 150 asm(" .state16");
142 asm(" mov A1, #0xC0"); 151 asm(" mov A1, #0xC0");
143 asm(" ldr A2, tct_amd_disable"); 152 asm(" ldr A2, tct_amd_disable");
144 asm(" bx A2 "); 153 asm(" bx A2 ");
145 154
146 asm("tct_amd_disable .field _TCT_Control_Interrupts+0,32"); 155 asm("tct_amd_disable .field _TCT_Control_Interrupts+0,32");
147 asm(" .global _TCT_Control_Interrupts"); 156 asm(" .global _TCT_Control_Interrupts");
157 #endif
148 } 158 }
149 159
150 void amd_int_enable(uint32 cpsr) 160 void amd_int_enable(uint32 cpsr)
151 { 161 {
162 #ifdef __GNUC__
163 return NU_Control_Interrupts(cpsr);
164 #else
152 asm(" .state16"); 165 asm(" .state16");
153 asm(" ldr A2, tct_amd_enable"); 166 asm(" ldr A2, tct_amd_enable");
154 asm(" bx A2 "); 167 asm(" bx A2 ");
155 168
156 asm("tct_amd_enable .field _TCT_Control_Interrupts+0,32"); 169 asm("tct_amd_enable .field _TCT_Control_Interrupts+0,32");
157 asm(" .global _TCT_Control_Interrupts"); 170 asm(" .global _TCT_Control_Interrupts");
171 #endif
158 } 172 }
159 173
160 // Even though we have this end label, we cannot determine the number of 174 // Even though we have this end label, we cannot determine the number of
161 // constant/PC-relative data following the code! 175 // constant/PC-relative data following the code!
176 #ifdef __GNUC__
177 asm(".globl ffsdrv_ram_amd_end");
178 asm("ffsdrv_ram_amd_end:");
179 #else
162 asm(" .state32"); 180 asm(" .state32");
163 asm(" .label _ffsdrv_ram_amd_end"); 181 asm(" .label _ffsdrv_ram_amd_end");
164 asm(" .def _ffsdrv_ram_amd_end"); 182 asm(" .def _ffsdrv_ram_amd_end");
183 #endif